./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash edcc597a46f9ad79563531282ca675b8b1d7c4bf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalArgumentException: Recursive programs are not supported. --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:13:07,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:13:07,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:13:07,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:13:07,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:13:07,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:13:07,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:13:07,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:13:07,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:13:07,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:13:07,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:13:07,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:13:07,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:13:07,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:13:07,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:13:07,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:13:07,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:13:07,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:13:07,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:13:07,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:13:07,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:13:07,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:13:07,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:13:07,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:13:07,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:13:07,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:13:07,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:13:07,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:13:07,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:13:07,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:13:07,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:13:07,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:13:07,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:13:07,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:13:07,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:13:07,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:13:07,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:13:07,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:13:07,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:13:07,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:13:07,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:13:07,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-11-26 02:13:07,507 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:13:07,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:13:07,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:13:07,509 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:13:07,509 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:13:07,509 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:13:07,509 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:13:07,510 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:13:07,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:13:07,510 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:13:07,510 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:13:07,510 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:13:07,511 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:13:07,511 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:13:07,511 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:13:07,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:13:07,512 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:13:07,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:13:07,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:13:07,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:13:07,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:13:07,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:13:07,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:13:07,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:13:07,517 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:13:07,518 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:13:07,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:13:07,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:13:07,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:13:07,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:13:07,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:13:07,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:13:07,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:13:07,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:13:07,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:13:07,520 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:13:07,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:13:07,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:13:07,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:13:07,521 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2b87fd13-9db0-430f-b8ca-5336b223d71a/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 ! overflow) ) 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 -> edcc597a46f9ad79563531282ca675b8b1d7c4bf [2019-11-26 02:13:07,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:13:07,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:13:07,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:13:07,669 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:13:07,669 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:13:07,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/../../sv-benchmarks/c/recursive/McCarthy91-2.c [2019-11-26 02:13:07,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/data/40d81c3e7/17102259abc2417faefa1b27206b691a/FLAGbaa01e97c [2019-11-26 02:13:08,096 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:13:08,097 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/sv-benchmarks/c/recursive/McCarthy91-2.c [2019-11-26 02:13:08,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/data/40d81c3e7/17102259abc2417faefa1b27206b691a/FLAGbaa01e97c [2019-11-26 02:13:08,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/data/40d81c3e7/17102259abc2417faefa1b27206b691a [2019-11-26 02:13:08,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:13:08,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:13:08,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:13:08,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:13:08,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:13:08,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697d6204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08, skipping insertion in model container [2019-11-26 02:13:08,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:13:08,569 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:13:08,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:13:08,704 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:13:08,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:13:08,800 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:13:08,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08 WrapperNode [2019-11-26 02:13:08,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:13:08,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:13:08,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:13:08,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:13:08,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:13:08,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:13:08,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:13:08,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:13:08,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... [2019-11-26 02:13:08,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:13:08,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:13:08,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:13:08,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:13:08,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/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 [2019-11-26 02:13:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:13:08,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:13:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2019-11-26 02:13:08,892 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2019-11-26 02:13:09,110 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:13:09,110 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:13:09,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:13:09 BoogieIcfgContainer [2019-11-26 02:13:09,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:13:09,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:13:09,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:13:09,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:13:09,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:13:08" (1/3) ... [2019-11-26 02:13:09,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640f6903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:13:09, skipping insertion in model container [2019-11-26 02:13:09,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:08" (2/3) ... [2019-11-26 02:13:09,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@640f6903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:13:09, skipping insertion in model container [2019-11-26 02:13:09,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:13:09" (3/3) ... [2019-11-26 02:13:09,124 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2019-11-26 02:13:09,133 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:13:09,138 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-26 02:13:09,147 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-26 02:13:09,170 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:13:09,170 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:13:09,170 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:13:09,170 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:13:09,179 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:13:09,180 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:13:09,180 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:13:09,180 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:13:09,205 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-26 02:13:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:13:09,210 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:09,211 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:13:09,212 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:13:09,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:09,225 INFO L82 PathProgramCache]: Analyzing trace with hash 31043311, now seen corresponding path program 1 times [2019-11-26 02:13:09,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:09,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413331271] [2019-11-26 02:13:09,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:09,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413331271] [2019-11-26 02:13:09,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:13:09,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:13:09,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104545366] [2019-11-26 02:13:09,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:13:09,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:13:09,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:13:09,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:13:09,382 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2019-11-26 02:13:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:13:09,533 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-11-26 02:13:09,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:13:09,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-26 02:13:09,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:13:09,549 INFO L225 Difference]: With dead ends: 46 [2019-11-26 02:13:09,549 INFO L226 Difference]: Without dead ends: 41 [2019-11-26 02:13:09,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:13:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-26 02:13:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-11-26 02:13:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-26 02:13:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-11-26 02:13:09,588 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2019-11-26 02:13:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:13:09,588 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-11-26 02:13:09,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:13:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-11-26 02:13:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:13:09,589 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:09,589 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:13:09,590 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:13:09,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:09,590 INFO L82 PathProgramCache]: Analyzing trace with hash 31043471, now seen corresponding path program 1 times [2019-11-26 02:13:09,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:09,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029567680] [2019-11-26 02:13:09,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:09,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029567680] [2019-11-26 02:13:09,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:13:09,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:13:09,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742758653] [2019-11-26 02:13:09,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:13:09,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:13:09,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:13:09,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:13:09,612 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2019-11-26 02:13:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:13:09,634 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-11-26 02:13:09,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:13:09,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:13:09,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:13:09,638 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:13:09,638 INFO L226 Difference]: Without dead ends: 39 [2019-11-26 02:13:09,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:13:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-26 02:13:09,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2019-11-26 02:13:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-26 02:13:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-11-26 02:13:09,653 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2019-11-26 02:13:09,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:13:09,653 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-11-26 02:13:09,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:13:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-11-26 02:13:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:13:09,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:09,655 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:13:09,655 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:13:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:09,657 INFO L82 PathProgramCache]: Analyzing trace with hash 962342709, now seen corresponding path program 1 times [2019-11-26 02:13:09,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:09,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577563114] [2019-11-26 02:13:09,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:09,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577563114] [2019-11-26 02:13:09,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:13:09,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:13:09,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247466187] [2019-11-26 02:13:09,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:13:09,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:13:09,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:13:09,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:13:09,690 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-11-26 02:13:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:13:09,716 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-11-26 02:13:09,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:13:09,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:13:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:13:09,719 INFO L225 Difference]: With dead ends: 39 [2019-11-26 02:13:09,720 INFO L226 Difference]: Without dead ends: 38 [2019-11-26 02:13:09,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:13:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-26 02:13:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2019-11-26 02:13:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-26 02:13:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-11-26 02:13:09,738 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2019-11-26 02:13:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:13:09,738 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-11-26 02:13:09,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:13:09,738 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-11-26 02:13:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:13:09,739 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:09,739 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:13:09,740 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:13:09,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:09,740 INFO L82 PathProgramCache]: Analyzing trace with hash 962347674, now seen corresponding path program 1 times [2019-11-26 02:13:09,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:09,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980678112] [2019-11-26 02:13:09,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:09,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980678112] [2019-11-26 02:13:09,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:13:09,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:13:09,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576604590] [2019-11-26 02:13:09,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:13:09,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:13:09,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:13:09,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:13:09,780 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2019-11-26 02:13:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:13:09,864 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-11-26 02:13:09,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:13:09,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-26 02:13:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:13:09,866 INFO L225 Difference]: With dead ends: 50 [2019-11-26 02:13:09,866 INFO L226 Difference]: Without dead ends: 49 [2019-11-26 02:13:09,867 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:13:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-26 02:13:09,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2019-11-26 02:13:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-26 02:13:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-11-26 02:13:09,876 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2019-11-26 02:13:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:13:09,876 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-11-26 02:13:09,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:13:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-11-26 02:13:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:13:09,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:09,877 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:13:09,878 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:13:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:09,878 INFO L82 PathProgramCache]: Analyzing trace with hash -703912792, now seen corresponding path program 1 times [2019-11-26 02:13:09,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:09,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271544343] [2019-11-26 02:13:09,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:09,928 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271544343] [2019-11-26 02:13:09,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:13:09,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:13:09,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682172045] [2019-11-26 02:13:09,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:13:09,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:13:09,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:13:09,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:13:09,930 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2019-11-26 02:13:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:13:10,027 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-11-26 02:13:10,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:13:10,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-26 02:13:10,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:13:10,029 INFO L225 Difference]: With dead ends: 68 [2019-11-26 02:13:10,029 INFO L226 Difference]: Without dead ends: 67 [2019-11-26 02:13:10,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:13:10,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-26 02:13:10,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2019-11-26 02:13:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-26 02:13:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2019-11-26 02:13:10,051 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 10 [2019-11-26 02:13:10,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:13:10,052 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2019-11-26 02:13:10,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:13:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2019-11-26 02:13:10,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:13:10,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:10,053 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:13:10,053 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:13:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:10,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1217128367, now seen corresponding path program 1 times [2019-11-26 02:13:10,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:10,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383288968] [2019-11-26 02:13:10,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:10,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383288968] [2019-11-26 02:13:10,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:13:10,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:13:10,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355666815] [2019-11-26 02:13:10,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:13:10,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:13:10,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:13:10,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:13:10,116 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 4 states. [2019-11-26 02:13:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:13:10,133 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2019-11-26 02:13:10,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:13:10,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-26 02:13:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:13:10,138 INFO L225 Difference]: With dead ends: 58 [2019-11-26 02:13:10,138 INFO L226 Difference]: Without dead ends: 47 [2019-11-26 02:13:10,138 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:13:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-26 02:13:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-26 02:13:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-26 02:13:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2019-11-26 02:13:10,146 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2019-11-26 02:13:10,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:13:10,147 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2019-11-26 02:13:10,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:13:10,147 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-11-26 02:13:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:13:10,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:10,148 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:13:10,148 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:13:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:10,149 INFO L82 PathProgramCache]: Analyzing trace with hash -843390153, now seen corresponding path program 1 times [2019-11-26 02:13:10,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:10,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671323821] [2019-11-26 02:13:10,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:13:10,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671323821] [2019-11-26 02:13:10,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361581400] [2019-11-26 02:13:10,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2b87fd13-9db0-430f-b8ca-5336b223d71a/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:13:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:10,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:13:10,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:13:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:10,404 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:13:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:10,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1056373235] [2019-11-26 02:13:10,633 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-26 02:13:10,633 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:13:10,638 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: IllegalArgumentException [2019-11-26 02:13:10,841 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:13:10,841 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 02:13:10,845 INFO L168 Benchmark]: Toolchain (without parser) took 2306.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 944.7 MB in the beginning and 963.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 107.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:10,846 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:13:10,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:10,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:13:10,847 INFO L168 Benchmark]: Boogie Preprocessor took 13.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:13:10,848 INFO L168 Benchmark]: RCFGBuilder took 265.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:10,848 INFO L168 Benchmark]: TraceAbstraction took 1730.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.7 MB in the end (delta: 134.3 MB). Peak memory consumption was 134.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:10,851 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 265.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1730.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.7 MB in the end (delta: 134.3 MB). Peak memory consumption was 134.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: Recursive programs are not supported. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: Recursive programs are not supported.: de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...