./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-1.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_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/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 37028c56b7915050ee6a79b5e737b9e44bf7c3db ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/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 02:55:04,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:55:04,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:55:04,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:55:04,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:55:04,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:55:04,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:55:04,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:55:04,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:55:04,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:55:04,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:55:04,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:55:04,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:55:04,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:55:04,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:55:04,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:55:04,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:55:04,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:55:04,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:55:04,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:55:04,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:55:04,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:55:04,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:55:04,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:55:04,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:55:04,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:55:04,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:55:04,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:55:04,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:55:04,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:55:04,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:55:04,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:55:04,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:55:04,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:55:04,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:55:04,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:55:04,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:55:04,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:55:04,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:55:04,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:55:04,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:55:04,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-11-26 02:55:04,639 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:55:04,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:55:04,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:55:04,640 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:55:04,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:55:04,640 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:55:04,641 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:55:04,641 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:55:04,641 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:55:04,641 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:55:04,641 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:55:04,641 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:55:04,642 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:55:04,642 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:55:04,642 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:55:04,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:55:04,643 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:55:04,643 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:55:04,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:55:04,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:55:04,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:55:04,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:55:04,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:55:04,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:55:04,644 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:55:04,644 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:55:04,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:55:04,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:55:04,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:55:04,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:55:04,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:55:04,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:55:04,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:55:04,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:55:04,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:55:04,646 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:55:04,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:55:04,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:55:04,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:55:04,657 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_d353f843-ca30-474c-b6a0-e744c6770450/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 -> 37028c56b7915050ee6a79b5e737b9e44bf7c3db [2019-11-26 02:55:04,809 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:55:04,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:55:04,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:55:04,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:55:04,827 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:55:04,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/../../sv-benchmarks/c/recursive/McCarthy91-1.c [2019-11-26 02:55:04,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/data/af741dc22/c5676a4fa6fd473c85ad81c9d2843d59/FLAGdd330ec78 [2019-11-26 02:55:05,309 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:55:05,309 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/sv-benchmarks/c/recursive/McCarthy91-1.c [2019-11-26 02:55:05,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/data/af741dc22/c5676a4fa6fd473c85ad81c9d2843d59/FLAGdd330ec78 [2019-11-26 02:55:05,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/bin/utaipan/data/af741dc22/c5676a4fa6fd473c85ad81c9d2843d59 [2019-11-26 02:55:05,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:55:05,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:55:05,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:55:05,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:55:05,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:55:05,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4199ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05, skipping insertion in model container [2019-11-26 02:55:05,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:55:05,376 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:55:05,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:55:05,501 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:55:05,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:55:05,594 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:55:05,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05 WrapperNode [2019-11-26 02:55:05,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:55:05,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:55:05,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:55:05,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:55:05,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:55:05,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:55:05,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:55:05,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:55:05,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... [2019-11-26 02:55:05,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:55:05,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:55:05,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:55:05,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:55:05,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/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 02:55:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:55:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:55:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2019-11-26 02:55:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2019-11-26 02:55:06,014 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:55:06,014 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:55:06,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:55:06 BoogieIcfgContainer [2019-11-26 02:55:06,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:55:06,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:55:06,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:55:06,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:55:06,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:55:05" (1/3) ... [2019-11-26 02:55:06,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f417132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:55:06, skipping insertion in model container [2019-11-26 02:55:06,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:05" (2/3) ... [2019-11-26 02:55:06,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f417132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:55:06, skipping insertion in model container [2019-11-26 02:55:06,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:55:06" (3/3) ... [2019-11-26 02:55:06,022 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2019-11-26 02:55:06,030 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:55:06,036 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-26 02:55:06,045 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-26 02:55:06,065 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:55:06,065 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:55:06,065 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:55:06,066 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:55:06,069 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:55:06,069 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:55:06,076 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:55:06,077 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:55:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-26 02:55:06,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:55:06,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:06,101 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:55:06,102 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 02:55:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash 31043311, now seen corresponding path program 1 times [2019-11-26 02:55:06,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:55:06,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053537765] [2019-11-26 02:55:06,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:55:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:06,242 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 02:55:06,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053537765] [2019-11-26 02:55:06,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:06,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:55:06,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161292115] [2019-11-26 02:55:06,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:55:06,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:55:06,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:55:06,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:55:06,261 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2019-11-26 02:55:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:06,397 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-11-26 02:55:06,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:55:06,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-26 02:55:06,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:06,405 INFO L225 Difference]: With dead ends: 46 [2019-11-26 02:55:06,405 INFO L226 Difference]: Without dead ends: 41 [2019-11-26 02:55:06,408 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 02:55:06,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-26 02:55:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-11-26 02:55:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-26 02:55:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-11-26 02:55:06,446 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2019-11-26 02:55:06,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:06,446 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-11-26 02:55:06,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:55:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-11-26 02:55:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:55:06,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:06,447 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:55:06,447 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 02:55:06,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:06,448 INFO L82 PathProgramCache]: Analyzing trace with hash 31043471, now seen corresponding path program 1 times [2019-11-26 02:55:06,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:55:06,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626397466] [2019-11-26 02:55:06,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:55:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:06,463 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 02:55:06,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626397466] [2019-11-26 02:55:06,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:06,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:55:06,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952957461] [2019-11-26 02:55:06,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:55:06,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:55:06,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:55:06,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:55:06,466 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2019-11-26 02:55:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:06,504 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-11-26 02:55:06,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:55:06,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:55:06,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:06,507 INFO L225 Difference]: With dead ends: 40 [2019-11-26 02:55:06,507 INFO L226 Difference]: Without dead ends: 39 [2019-11-26 02:55:06,508 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 02:55:06,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-26 02:55:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2019-11-26 02:55:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-26 02:55:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-11-26 02:55:06,528 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2019-11-26 02:55:06,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:06,529 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-11-26 02:55:06,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:55:06,529 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-11-26 02:55:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:55:06,531 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:06,531 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:55:06,531 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 02:55:06,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:06,532 INFO L82 PathProgramCache]: Analyzing trace with hash 962342709, now seen corresponding path program 1 times [2019-11-26 02:55:06,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:55:06,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632640755] [2019-11-26 02:55:06,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:55:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:06,558 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 02:55:06,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632640755] [2019-11-26 02:55:06,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:06,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:55:06,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319530633] [2019-11-26 02:55:06,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:55:06,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:55:06,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:55:06,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:55:06,560 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-11-26 02:55:06,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:06,599 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-11-26 02:55:06,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:55:06,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:55:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:06,607 INFO L225 Difference]: With dead ends: 39 [2019-11-26 02:55:06,607 INFO L226 Difference]: Without dead ends: 38 [2019-11-26 02:55:06,608 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 02:55:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-26 02:55:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2019-11-26 02:55:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-26 02:55:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-11-26 02:55:06,616 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2019-11-26 02:55:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:06,617 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-11-26 02:55:06,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:55:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-11-26 02:55:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:55:06,632 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:06,633 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:55:06,633 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 02:55:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash 962347674, now seen corresponding path program 1 times [2019-11-26 02:55:06,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:55:06,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215683100] [2019-11-26 02:55:06,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:55:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:06,711 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 02:55:06,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215683100] [2019-11-26 02:55:06,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:06,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:55:06,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255432053] [2019-11-26 02:55:06,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:55:06,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:55:06,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:55:06,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:55:06,713 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2019-11-26 02:55:06,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:06,798 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-11-26 02:55:06,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:55:06,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-26 02:55:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:06,800 INFO L225 Difference]: With dead ends: 50 [2019-11-26 02:55:06,800 INFO L226 Difference]: Without dead ends: 49 [2019-11-26 02:55:06,801 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 02:55:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-26 02:55:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2019-11-26 02:55:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-26 02:55:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-11-26 02:55:06,811 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2019-11-26 02:55:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:06,811 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-11-26 02:55:06,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:55:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-11-26 02:55:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:55:06,812 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:06,812 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:06,813 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 02:55:06,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:06,813 INFO L82 PathProgramCache]: Analyzing trace with hash -703912792, now seen corresponding path program 1 times [2019-11-26 02:55:06,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:55:06,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080496948] [2019-11-26 02:55:06,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:55:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:06,851 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 02:55:06,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080496948] [2019-11-26 02:55:06,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:06,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:55:06,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667842345] [2019-11-26 02:55:06,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:55:06,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:55:06,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:55:06,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:55:06,853 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2019-11-26 02:55:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:06,937 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-11-26 02:55:06,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:55:06,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-26 02:55:06,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:06,939 INFO L225 Difference]: With dead ends: 68 [2019-11-26 02:55:06,939 INFO L226 Difference]: Without dead ends: 67 [2019-11-26 02:55:06,940 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 02:55:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-26 02:55:06,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2019-11-26 02:55:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-26 02:55:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2019-11-26 02:55:06,952 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 10 [2019-11-26 02:55:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:06,953 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2019-11-26 02:55:06,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:55:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2019-11-26 02:55:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:55:06,954 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:06,954 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:06,954 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 02:55:06,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:06,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1217128367, now seen corresponding path program 1 times [2019-11-26 02:55:06,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:55:06,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821837865] [2019-11-26 02:55:06,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:55:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:06,994 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 02:55:06,994 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821837865] [2019-11-26 02:55:06,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:06,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:55:06,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721771845] [2019-11-26 02:55:06,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:55:06,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:55:06,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:55:06,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:55:06,996 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 4 states. [2019-11-26 02:55:07,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:07,009 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2019-11-26 02:55:07,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:55:07,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-26 02:55:07,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:07,010 INFO L225 Difference]: With dead ends: 58 [2019-11-26 02:55:07,011 INFO L226 Difference]: Without dead ends: 47 [2019-11-26 02:55:07,011 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 02:55:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-26 02:55:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-26 02:55:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-26 02:55:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2019-11-26 02:55:07,020 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2019-11-26 02:55:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:07,020 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2019-11-26 02:55:07,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:55:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-11-26 02:55:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-26 02:55:07,022 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:07,022 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:07,022 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 02:55:07,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:07,023 INFO L82 PathProgramCache]: Analyzing trace with hash -843390153, now seen corresponding path program 1 times [2019-11-26 02:55:07,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:55:07,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604230547] [2019-11-26 02:55:07,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:55:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:07,111 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 02:55:07,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604230547] [2019-11-26 02:55:07,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770441488] [2019-11-26 02:55:07,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d353f843-ca30-474c-b6a0-e744c6770450/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 02:55:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:07,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:55:07,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:07,282 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 02:55:07,282 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:07,538 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 02:55:07,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [742771938] [2019-11-26 02:55:07,565 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-26 02:55:07,565 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:55:07,570 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: IllegalArgumentException [2019-11-26 02:55:07,773 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:55:07,774 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 02:55:07,778 INFO L168 Benchmark]: Toolchain (without parser) took 2438.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 951.4 MB in the beginning and 992.7 MB in the end (delta: -41.3 MB). Peak memory consumption was 121.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:07,778 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:55:07,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -206.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:07,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:55:07,782 INFO L168 Benchmark]: Boogie Preprocessor took 20.00 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:07,782 INFO L168 Benchmark]: RCFGBuilder took 372.55 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:07,783 INFO L168 Benchmark]: TraceAbstraction took 1759.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 992.7 MB in the end (delta: 139.3 MB). Peak memory consumption was 139.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:07,791 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 252.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -206.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.00 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 372.55 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1759.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 992.7 MB in the end (delta: 139.3 MB). Peak memory consumption was 139.3 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...