./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/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 64bit --witnessprinter.graph.data.programhash c27ad91a5bec233234e07a14bfd5505e082df4cd ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_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 02:04:07,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:04:07,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:04:07,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:04:07,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:04:07,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:04:07,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:04:07,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:04:07,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:04:07,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:04:07,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:04:07,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:04:07,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:04:07,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:04:07,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:04:07,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:04:07,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:04:07,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:04:07,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:04:07,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:04:07,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:04:07,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:04:07,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:04:07,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:04:07,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:04:07,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:04:07,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:04:07,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:04:07,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:04:07,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:04:07,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:04:07,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:04:07,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:04:07,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:04:07,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:04:07,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:04:07,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:04:07,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:04:07,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:04:07,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:04:07,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:04:07,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:04:07,635 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:04:07,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:04:07,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:04:07,636 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:04:07,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:04:07,637 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:04:07,637 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:04:07,637 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:04:07,637 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:04:07,638 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:04:07,638 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:04:07,638 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:04:07,638 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:04:07,639 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:04:07,639 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:04:07,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:04:07,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:04:07,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:04:07,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:04:07,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:04:07,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:04:07,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:04:07,641 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:04:07,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:04:07,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:04:07,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:04:07,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:04:07,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:04:07,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:04:07,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:04:07,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:04:07,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:04:07,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:04:07,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:04:07,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:04:07,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:04:07,653 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_63855481-1688-4d1e-8cc2-05a3aaf8ce67/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c27ad91a5bec233234e07a14bfd5505e082df4cd [2019-11-26 02:04:07,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:04:07,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:04:07,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:04:07,799 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:04:07,799 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:04:07,800 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2019-11-26 02:04:07,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/data/db9b2dd02/8b90fe4c01d84433900190129c4a18dd/FLAG6e8d2faf3 [2019-11-26 02:04:08,278 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:04:08,279 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2019-11-26 02:04:08,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/data/db9b2dd02/8b90fe4c01d84433900190129c4a18dd/FLAG6e8d2faf3 [2019-11-26 02:04:08,301 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/bin/utaipan/data/db9b2dd02/8b90fe4c01d84433900190129c4a18dd [2019-11-26 02:04:08,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:04:08,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:04:08,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:04:08,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:04:08,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:04:08,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c08adcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08, skipping insertion in model container [2019-11-26 02:04:08,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:04:08,340 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:04:08,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:04:08,534 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:04:08,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:04:08,624 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:04:08,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08 WrapperNode [2019-11-26 02:04:08,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:04:08,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:04:08,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:04:08,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:04:08,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:04:08,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:04:08,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:04:08,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:04:08,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... [2019-11-26 02:04:08,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:04:08,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:04:08,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:04:08,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:04:08,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/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 02:04:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-26 02:04:08,722 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-26 02:04:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-11-26 02:04:08,723 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-11-26 02:04:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:04:08,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:04:08,975 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:04:08,976 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:04:08,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:08 BoogieIcfgContainer [2019-11-26 02:04:08,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:04:08,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:04:08,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:04:08,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:04:08,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:04:08" (1/3) ... [2019-11-26 02:04:08,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff1bffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:04:08, skipping insertion in model container [2019-11-26 02:04:08,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:04:08" (2/3) ... [2019-11-26 02:04:08,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff1bffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:04:08, skipping insertion in model container [2019-11-26 02:04:08,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:04:08" (3/3) ... [2019-11-26 02:04:08,992 INFO L109 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2019-11-26 02:04:09,001 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:04:09,008 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-26 02:04:09,016 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-26 02:04:09,035 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:04:09,035 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:04:09,035 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:04:09,035 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:04:09,036 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:04:09,036 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:04:09,036 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:04:09,036 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:04:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-26 02:04:09,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:04:09,057 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:09,058 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:04:09,058 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:09,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:09,063 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2019-11-26 02:04:09,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:09,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926666118] [2019-11-26 02:04:09,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:09,215 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 02:04:09,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926666118] [2019-11-26 02:04:09,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:09,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:04:09,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828514801] [2019-11-26 02:04:09,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:04:09,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:09,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:04:09,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:04:09,232 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2019-11-26 02:04:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:09,356 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2019-11-26 02:04:09,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:04:09,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-26 02:04:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:09,368 INFO L225 Difference]: With dead ends: 62 [2019-11-26 02:04:09,368 INFO L226 Difference]: Without dead ends: 56 [2019-11-26 02:04:09,371 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 02:04:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-26 02:04:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2019-11-26 02:04:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-26 02:04:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2019-11-26 02:04:09,414 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2019-11-26 02:04:09,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:09,414 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2019-11-26 02:04:09,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:04:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2019-11-26 02:04:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:04:09,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:09,415 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:04:09,416 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:09,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:09,416 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2019-11-26 02:04:09,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:09,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293202742] [2019-11-26 02:04:09,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:09,432 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 02:04:09,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293202742] [2019-11-26 02:04:09,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:09,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:04:09,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454488638] [2019-11-26 02:04:09,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:04:09,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:09,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:04:09,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:04:09,435 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2019-11-26 02:04:09,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:09,463 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2019-11-26 02:04:09,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:04:09,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:04:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:09,465 INFO L225 Difference]: With dead ends: 52 [2019-11-26 02:04:09,465 INFO L226 Difference]: Without dead ends: 50 [2019-11-26 02:04:09,466 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 02:04:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-26 02:04:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-11-26 02:04:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-26 02:04:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2019-11-26 02:04:09,476 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2019-11-26 02:04:09,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:09,476 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2019-11-26 02:04:09,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:04:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2019-11-26 02:04:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:04:09,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:09,481 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:04:09,483 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:09,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:09,484 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2019-11-26 02:04:09,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:09,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730861050] [2019-11-26 02:04:09,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:04:09,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730861050] [2019-11-26 02:04:09,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:09,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:04:09,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402679277] [2019-11-26 02:04:09,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:04:09,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:09,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:04:09,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:04:09,596 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2019-11-26 02:04:09,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:09,808 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2019-11-26 02:04:09,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:04:09,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-11-26 02:04:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:09,812 INFO L225 Difference]: With dead ends: 66 [2019-11-26 02:04:09,812 INFO L226 Difference]: Without dead ends: 63 [2019-11-26 02:04:09,813 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:04:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-26 02:04:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-11-26 02:04:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-26 02:04:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2019-11-26 02:04:09,833 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2019-11-26 02:04:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:09,834 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2019-11-26 02:04:09,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:04:09,835 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2019-11-26 02:04:09,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-26 02:04:09,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:09,836 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:04:09,837 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:09,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:09,837 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2019-11-26 02:04:09,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:09,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725625837] [2019-11-26 02:04:09,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:04:09,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725625837] [2019-11-26 02:04:09,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:09,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:04:09,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226014789] [2019-11-26 02:04:09,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:04:09,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:09,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:04:09,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:04:09,868 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2019-11-26 02:04:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:09,878 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2019-11-26 02:04:09,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:04:09,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-26 02:04:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:09,880 INFO L225 Difference]: With dead ends: 61 [2019-11-26 02:04:09,880 INFO L226 Difference]: Without dead ends: 60 [2019-11-26 02:04:09,881 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 02:04:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-26 02:04:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2019-11-26 02:04:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-26 02:04:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2019-11-26 02:04:09,891 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2019-11-26 02:04:09,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:09,892 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2019-11-26 02:04:09,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:04:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2019-11-26 02:04:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-26 02:04:09,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:09,893 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:04:09,894 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:09,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2019-11-26 02:04:09,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:09,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827823932] [2019-11-26 02:04:09,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:04:09,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827823932] [2019-11-26 02:04:09,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:09,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:04:09,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836071064] [2019-11-26 02:04:09,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:04:09,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:09,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:04:09,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:04:09,939 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2019-11-26 02:04:09,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:09,986 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2019-11-26 02:04:09,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:04:09,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-26 02:04:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:09,989 INFO L225 Difference]: With dead ends: 93 [2019-11-26 02:04:09,989 INFO L226 Difference]: Without dead ends: 92 [2019-11-26 02:04:09,990 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 02:04:09,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-26 02:04:10,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2019-11-26 02:04:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-26 02:04:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2019-11-26 02:04:10,004 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2019-11-26 02:04:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:10,005 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2019-11-26 02:04:10,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:04:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2019-11-26 02:04:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-26 02:04:10,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:10,006 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:04:10,007 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:10,007 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2019-11-26 02:04:10,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:10,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637282158] [2019-11-26 02:04:10,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:04:10,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637282158] [2019-11-26 02:04:10,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:10,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:04:10,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250242580] [2019-11-26 02:04:10,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:04:10,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:10,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:04:10,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:04:10,058 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2019-11-26 02:04:10,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:10,119 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2019-11-26 02:04:10,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:04:10,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-26 02:04:10,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:10,121 INFO L225 Difference]: With dead ends: 93 [2019-11-26 02:04:10,121 INFO L226 Difference]: Without dead ends: 89 [2019-11-26 02:04:10,121 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 02:04:10,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-11-26 02:04:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2019-11-26 02:04:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-26 02:04:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2019-11-26 02:04:10,133 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2019-11-26 02:04:10,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:10,133 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2019-11-26 02:04:10,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:04:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2019-11-26 02:04:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-26 02:04:10,134 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:10,135 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:04:10,135 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:10,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:10,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102097, now seen corresponding path program 1 times [2019-11-26 02:04:10,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:10,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448919268] [2019-11-26 02:04:10,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-26 02:04:10,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448919268] [2019-11-26 02:04:10,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:10,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:04:10,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350868576] [2019-11-26 02:04:10,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:04:10,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:10,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:04:10,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:04:10,212 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 7 states. [2019-11-26 02:04:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:10,361 INFO L93 Difference]: Finished difference Result 95 states and 119 transitions. [2019-11-26 02:04:10,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:04:10,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2019-11-26 02:04:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:10,362 INFO L225 Difference]: With dead ends: 95 [2019-11-26 02:04:10,363 INFO L226 Difference]: Without dead ends: 94 [2019-11-26 02:04:10,363 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:04:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-26 02:04:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2019-11-26 02:04:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-26 02:04:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2019-11-26 02:04:10,375 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 24 [2019-11-26 02:04:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:10,375 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2019-11-26 02:04:10,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:04:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2019-11-26 02:04:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-26 02:04:10,377 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:10,377 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:04:10,377 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:10,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1361134625, now seen corresponding path program 1 times [2019-11-26 02:04:10,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:10,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643018754] [2019-11-26 02:04:10,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-26 02:04:10,447 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643018754] [2019-11-26 02:04:10,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:04:10,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:04:10,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868173695] [2019-11-26 02:04:10,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:04:10,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:04:10,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:04:10,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:04:10,449 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand 7 states. [2019-11-26 02:04:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:04:10,614 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2019-11-26 02:04:10,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:04:10,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-11-26 02:04:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:04:10,617 INFO L225 Difference]: With dead ends: 95 [2019-11-26 02:04:10,617 INFO L226 Difference]: Without dead ends: 94 [2019-11-26 02:04:10,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:04:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-26 02:04:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2019-11-26 02:04:10,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-26 02:04:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2019-11-26 02:04:10,628 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 33 [2019-11-26 02:04:10,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:04:10,629 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2019-11-26 02:04:10,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:04:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2019-11-26 02:04:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-26 02:04:10,641 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:04:10,641 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:04:10,641 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:04:10,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:04:10,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1124211105, now seen corresponding path program 1 times [2019-11-26 02:04:10,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:04:10,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792818859] [2019-11-26 02:04:10,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:04:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-26 02:04:10,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792818859] [2019-11-26 02:04:10,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080879138] [2019-11-26 02:04:10,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63855481-1688-4d1e-8cc2-05a3aaf8ce67/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 02:04:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:04:10,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:04:10,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:04:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-26 02:04:10,997 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:04:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-26 02:04:11,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [948431820] [2019-11-26 02:04:11,243 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2019-11-26 02:04:11,244 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:04:11,249 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: IllegalArgumentException [2019-11-26 02:04:11,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:04:11,454 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 02:04:11,458 INFO L168 Benchmark]: Toolchain (without parser) took 3152.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.4 MB in the beginning and 869.7 MB in the end (delta: 77.7 MB). Peak memory consumption was 207.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:11,458 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 02:04:11,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:11,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:04:11,460 INFO L168 Benchmark]: Boogie Preprocessor took 17.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:11,461 INFO L168 Benchmark]: RCFGBuilder took 305.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:11,461 INFO L168 Benchmark]: TraceAbstraction took 2478.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 869.7 MB in the end (delta: 231.3 MB). Peak memory consumption was 231.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:04:11,464 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 315.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 305.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2478.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 869.7 MB in the end (delta: 231.3 MB). Peak memory consumption was 231.3 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...