./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Addition01-2.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_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/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 91d2600fad1210650d8ad3da481cdcc11b280095 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/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 02:49:30,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:49:30,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:49:30,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:49:30,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:49:30,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:49:30,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:49:30,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:49:30,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:49:30,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:49:30,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:49:30,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:49:30,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:49:30,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:49:30,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:49:30,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:49:30,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:49:30,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:49:30,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:49:30,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:49:30,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:49:30,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:49:30,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:49:30,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:49:30,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:49:30,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:49:30,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:49:30,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:49:30,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:49:30,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:49:30,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:49:30,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:49:30,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:49:30,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:49:30,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:49:30,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:49:30,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:49:30,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:49:30,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:49:30,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:49:30,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:49:30,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-11-26 02:49:30,508 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:49:30,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:49:30,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:49:30,518 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:49:30,518 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:49:30,519 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:49:30,519 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:49:30,519 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:49:30,519 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:49:30,519 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:49:30,520 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:49:30,520 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:49:30,520 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:49:30,520 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:49:30,521 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:49:30,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:49:30,522 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:49:30,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:49:30,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:49:30,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:49:30,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:49:30,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:49:30,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:49:30,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:49:30,524 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:49:30,524 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:49:30,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:49:30,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:49:30,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:49:30,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:49:30,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:49:30,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:49:30,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:49:30,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:49:30,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:49:30,527 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:49:30,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:49:30,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:49:30,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:49:30,527 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_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/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 -> 91d2600fad1210650d8ad3da481cdcc11b280095 [2019-11-26 02:49:30,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:49:30,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:49:30,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:49:30,689 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:49:30,689 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:49:30,690 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/../../sv-benchmarks/c/recursive/Addition01-2.c [2019-11-26 02:49:30,736 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/data/adcb640c8/09171e93fd72435ebb48152a9ab32305/FLAG444351cfe [2019-11-26 02:49:31,109 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:49:31,110 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/sv-benchmarks/c/recursive/Addition01-2.c [2019-11-26 02:49:31,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/data/adcb640c8/09171e93fd72435ebb48152a9ab32305/FLAG444351cfe [2019-11-26 02:49:31,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/bin/utaipan/data/adcb640c8/09171e93fd72435ebb48152a9ab32305 [2019-11-26 02:49:31,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:49:31,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:49:31,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:49:31,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:49:31,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:49:31,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cc24e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31, skipping insertion in model container [2019-11-26 02:49:31,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:49:31,163 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:49:31,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:49:31,339 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:49:31,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:49:31,441 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:49:31,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31 WrapperNode [2019-11-26 02:49:31,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:49:31,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:49:31,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:49:31,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:49:31,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:49:31,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:49:31,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:49:31,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:49:31,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... [2019-11-26 02:49:31,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:49:31,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:49:31,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:49:31,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:49:31,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/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 02:49:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:49:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:49:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2019-11-26 02:49:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2019-11-26 02:49:31,804 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:49:31,804 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:49:31,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:31 BoogieIcfgContainer [2019-11-26 02:49:31,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:49:31,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:49:31,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:49:31,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:49:31,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:49:31" (1/3) ... [2019-11-26 02:49:31,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b10d6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:49:31, skipping insertion in model container [2019-11-26 02:49:31,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:31" (2/3) ... [2019-11-26 02:49:31,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b10d6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:49:31, skipping insertion in model container [2019-11-26 02:49:31,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:31" (3/3) ... [2019-11-26 02:49:31,819 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2019-11-26 02:49:31,827 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:49:31,831 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-26 02:49:31,839 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-26 02:49:31,858 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:49:31,859 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:49:31,859 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:49:31,859 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:49:31,859 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:49:31,859 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:49:31,859 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:49:31,859 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:49:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-11-26 02:49:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:49:31,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:31,881 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:49:31,881 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:49:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1338455646, now seen corresponding path program 1 times [2019-11-26 02:49:31,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:31,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094273548] [2019-11-26 02:49:31,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:32,036 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 02:49:32,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094273548] [2019-11-26 02:49:32,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:32,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:49:32,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583844660] [2019-11-26 02:49:32,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:49:32,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:32,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:49:32,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:49:32,055 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2019-11-26 02:49:32,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:32,202 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2019-11-26 02:49:32,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:49:32,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-26 02:49:32,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:32,213 INFO L225 Difference]: With dead ends: 65 [2019-11-26 02:49:32,213 INFO L226 Difference]: Without dead ends: 59 [2019-11-26 02:49:32,216 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 02:49:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-26 02:49:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2019-11-26 02:49:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-26 02:49:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2019-11-26 02:49:32,258 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 8 [2019-11-26 02:49:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:32,258 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2019-11-26 02:49:32,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:49:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2019-11-26 02:49:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:49:32,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:32,260 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:49:32,260 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:49:32,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1457547865, now seen corresponding path program 1 times [2019-11-26 02:49:32,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:32,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282823882] [2019-11-26 02:49:32,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:32,308 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 02:49:32,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282823882] [2019-11-26 02:49:32,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:32,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:49:32,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250589615] [2019-11-26 02:49:32,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:49:32,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:32,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:49:32,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:49:32,312 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand 5 states. [2019-11-26 02:49:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:32,420 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2019-11-26 02:49:32,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:49:32,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-26 02:49:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:32,423 INFO L225 Difference]: With dead ends: 97 [2019-11-26 02:49:32,423 INFO L226 Difference]: Without dead ends: 95 [2019-11-26 02:49:32,424 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 02:49:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-26 02:49:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2019-11-26 02:49:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-26 02:49:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2019-11-26 02:49:32,439 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 9 [2019-11-26 02:49:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:32,440 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2019-11-26 02:49:32,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:49:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2019-11-26 02:49:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:49:32,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:32,441 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:49:32,441 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:49:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2060656512, now seen corresponding path program 1 times [2019-11-26 02:49:32,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:32,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486910800] [2019-11-26 02:49:32,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:32,485 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 02:49:32,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486910800] [2019-11-26 02:49:32,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:32,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:49:32,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147964117] [2019-11-26 02:49:32,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:49:32,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:32,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:49:32,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:49:32,487 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 5 states. [2019-11-26 02:49:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:32,616 INFO L93 Difference]: Finished difference Result 98 states and 129 transitions. [2019-11-26 02:49:32,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:49:32,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-26 02:49:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:32,622 INFO L225 Difference]: With dead ends: 98 [2019-11-26 02:49:32,622 INFO L226 Difference]: Without dead ends: 96 [2019-11-26 02:49:32,623 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 02:49:32,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-26 02:49:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2019-11-26 02:49:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-26 02:49:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2019-11-26 02:49:32,647 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 10 [2019-11-26 02:49:32,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:32,647 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2019-11-26 02:49:32,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:49:32,648 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2019-11-26 02:49:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:49:32,648 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:32,648 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:49:32,649 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:49:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:32,649 INFO L82 PathProgramCache]: Analyzing trace with hash 2060531711, now seen corresponding path program 1 times [2019-11-26 02:49:32,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:32,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535717333] [2019-11-26 02:49:32,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:32,683 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 02:49:32,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535717333] [2019-11-26 02:49:32,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:32,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:49:32,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652032676] [2019-11-26 02:49:32,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:49:32,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:32,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:49:32,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:49:32,685 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand 4 states. [2019-11-26 02:49:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:32,707 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2019-11-26 02:49:32,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:49:32,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-26 02:49:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:32,709 INFO L225 Difference]: With dead ends: 88 [2019-11-26 02:49:32,710 INFO L226 Difference]: Without dead ends: 87 [2019-11-26 02:49:32,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:49:32,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-26 02:49:32,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2019-11-26 02:49:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-26 02:49:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2019-11-26 02:49:32,722 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 10 [2019-11-26 02:49:32,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:32,722 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2019-11-26 02:49:32,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:49:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2019-11-26 02:49:32,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:49:32,723 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:32,723 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:49:32,723 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:49:32,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:32,724 INFO L82 PathProgramCache]: Analyzing trace with hash -544157495, now seen corresponding path program 1 times [2019-11-26 02:49:32,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:32,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354628036] [2019-11-26 02:49:32,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:32,747 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 02:49:32,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354628036] [2019-11-26 02:49:32,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:32,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:49:32,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712943784] [2019-11-26 02:49:32,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:49:32,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:32,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:49:32,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:49:32,749 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand 3 states. [2019-11-26 02:49:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:32,778 INFO L93 Difference]: Finished difference Result 95 states and 127 transitions. [2019-11-26 02:49:32,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:49:32,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-26 02:49:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:32,783 INFO L225 Difference]: With dead ends: 95 [2019-11-26 02:49:32,783 INFO L226 Difference]: Without dead ends: 94 [2019-11-26 02:49:32,784 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 02:49:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-26 02:49:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2019-11-26 02:49:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-26 02:49:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2019-11-26 02:49:32,805 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 11 [2019-11-26 02:49:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:32,806 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2019-11-26 02:49:32,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:49:32,806 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2019-11-26 02:49:32,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:49:32,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:32,807 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:49:32,807 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:49:32,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:32,808 INFO L82 PathProgramCache]: Analyzing trace with hash -548026352, now seen corresponding path program 1 times [2019-11-26 02:49:32,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:32,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236129459] [2019-11-26 02:49:32,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:32,831 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 02:49:32,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236129459] [2019-11-26 02:49:32,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:32,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:49:32,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955021595] [2019-11-26 02:49:32,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:49:32,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:32,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:49:32,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:49:32,834 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand 4 states. [2019-11-26 02:49:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:32,851 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2019-11-26 02:49:32,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:49:32,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-26 02:49:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:32,853 INFO L225 Difference]: With dead ends: 86 [2019-11-26 02:49:32,853 INFO L226 Difference]: Without dead ends: 66 [2019-11-26 02:49:32,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:49:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-26 02:49:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2019-11-26 02:49:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-26 02:49:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2019-11-26 02:49:32,860 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 11 [2019-11-26 02:49:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:32,860 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2019-11-26 02:49:32,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:49:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2019-11-26 02:49:32,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:49:32,861 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:32,861 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:49:32,861 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:49:32,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:32,862 INFO L82 PathProgramCache]: Analyzing trace with hash 637359235, now seen corresponding path program 1 times [2019-11-26 02:49:32,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:32,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927062239] [2019-11-26 02:49:32,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:32,890 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 02:49:32,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927062239] [2019-11-26 02:49:32,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:32,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:49:32,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942876479] [2019-11-26 02:49:32,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:49:32,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:32,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:49:32,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:49:32,892 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 5 states. [2019-11-26 02:49:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:32,952 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2019-11-26 02:49:32,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:49:32,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-26 02:49:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:32,954 INFO L225 Difference]: With dead ends: 76 [2019-11-26 02:49:32,954 INFO L226 Difference]: Without dead ends: 43 [2019-11-26 02:49:32,955 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 02:49:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-26 02:49:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-11-26 02:49:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-26 02:49:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-11-26 02:49:32,960 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 12 [2019-11-26 02:49:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:32,960 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-11-26 02:49:32,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:49:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-11-26 02:49:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:49:32,961 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:32,962 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:49:32,962 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:49:32,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:32,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1497942885, now seen corresponding path program 1 times [2019-11-26 02:49:32,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:32,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457437878] [2019-11-26 02:49:32,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:33,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457437878] [2019-11-26 02:49:33,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952323720] [2019-11-26 02:49:33,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb1ae2b1-3e95-4684-8866-0315ccf4cb86/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 02:49:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:33,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:49:33,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:49:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:33,079 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:49:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:33,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1038575969] [2019-11-26 02:49:33,192 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-11-26 02:49:33,192 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:49:33,200 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: IllegalArgumentException [2019-11-26 02:49:33,411 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:49:33,412 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 02:49:33,427 INFO L168 Benchmark]: Toolchain (without parser) took 2291.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -54.4 MB). Peak memory consumption was 101.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:33,428 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:33,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 948.7 MB in the beginning and 1.2 GB in the end (delta: -207.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:33,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:33,431 INFO L168 Benchmark]: Boogie Preprocessor took 14.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:33,432 INFO L168 Benchmark]: RCFGBuilder took 316.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:33,435 INFO L168 Benchmark]: TraceAbstraction took 1612.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 126.7 MB). Peak memory consumption was 126.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:33,441 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 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 948.7 MB in the beginning and 1.2 GB in the end (delta: -207.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 316.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1612.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 126.7 MB). Peak memory consumption was 126.7 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...