./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f330f622534898bf170bbd5a7ac37bee3deb574 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 22:12:38,930 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 22:12:38,931 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 22:12:38,937 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 22:12:38,937 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 22:12:38,938 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 22:12:38,938 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 22:12:38,939 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 22:12:38,940 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 22:12:38,940 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 22:12:38,941 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 22:12:38,941 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 22:12:38,941 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 22:12:38,942 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 22:12:38,943 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 22:12:38,943 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 22:12:38,943 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 22:12:38,944 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 22:12:38,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 22:12:38,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 22:12:38,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 22:12:38,947 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 22:12:38,948 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 22:12:38,949 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 22:12:38,949 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 22:12:38,949 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 22:12:38,950 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 22:12:38,950 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 22:12:38,951 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 22:12:38,951 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 22:12:38,952 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 22:12:38,952 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 22:12:38,952 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 22:12:38,952 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 22:12:38,953 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 22:12:38,953 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 22:12:38,953 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 22:12:38,961 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 22:12:38,961 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 22:12:38,961 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 22:12:38,961 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 22:12:38,962 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 22:12:38,962 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 22:12:38,962 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 22:12:38,962 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 22:12:38,962 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 22:12:38,962 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 22:12:38,962 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 22:12:38,962 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 22:12:38,963 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 22:12:38,963 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 22:12:38,963 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 22:12:38,963 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 22:12:38,963 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 22:12:38,964 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 22:12:38,964 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 22:12:38,964 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 22:12:38,964 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 22:12:38,964 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 22:12:38,964 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 22:12:38,964 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 22:12:38,964 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 22:12:38,965 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 22:12:38,965 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 22:12:38,965 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 22:12:38,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 22:12:38,965 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 22:12:38,965 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 22:12:38,965 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 22:12:38,965 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 22:12:38,966 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 22:12:38,966 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 22:12:38,966 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 22:12:38,966 INFO L133 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/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f330f622534898bf170bbd5a7ac37bee3deb574 [2018-12-08 22:12:38,984 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 22:12:38,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 22:12:38,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 22:12:38,996 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 22:12:38,997 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 22:12:38,997 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-12-08 22:12:39,040 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/data/425c929ad/6efbce1521ac43c9b87c1c80b928eb53/FLAG7b79e2f63 [2018-12-08 22:12:39,473 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 22:12:39,473 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/sv-benchmarks/c/recursive-simple/id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-12-08 22:12:39,477 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/data/425c929ad/6efbce1521ac43c9b87c1c80b928eb53/FLAG7b79e2f63 [2018-12-08 22:12:39,485 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/data/425c929ad/6efbce1521ac43c9b87c1c80b928eb53 [2018-12-08 22:12:39,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 22:12:39,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 22:12:39,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 22:12:39,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 22:12:39,491 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 22:12:39,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359bc049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39, skipping insertion in model container [2018-12-08 22:12:39,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 22:12:39,506 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 22:12:39,597 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 22:12:39,600 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 22:12:39,609 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 22:12:39,616 INFO L195 MainTranslator]: Completed translation [2018-12-08 22:12:39,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39 WrapperNode [2018-12-08 22:12:39,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 22:12:39,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 22:12:39,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 22:12:39,617 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 22:12:39,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 22:12:39,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 22:12:39,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 22:12:39,629 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 22:12:39,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... [2018-12-08 22:12:39,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 22:12:39,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 22:12:39,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 22:12:39,639 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 22:12:39,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/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 [2018-12-08 22:12:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 22:12:39,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 22:12:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2018-12-08 22:12:39,699 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2018-12-08 22:12:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 22:12:39,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 22:12:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 22:12:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 22:12:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-12-08 22:12:39,700 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-12-08 22:12:39,791 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 22:12:39,792 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 22:12:39,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:12:39 BoogieIcfgContainer [2018-12-08 22:12:39,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 22:12:39,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 22:12:39,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 22:12:39,794 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 22:12:39,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 10:12:39" (1/3) ... [2018-12-08 22:12:39,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c6ef3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:12:39, skipping insertion in model container [2018-12-08 22:12:39,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:12:39" (2/3) ... [2018-12-08 22:12:39,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c6ef3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:12:39, skipping insertion in model container [2018-12-08 22:12:39,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:12:39" (3/3) ... [2018-12-08 22:12:39,796 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-12-08 22:12:39,802 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 22:12:39,806 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 22:12:39,816 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 22:12:39,835 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 22:12:39,835 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 22:12:39,835 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 22:12:39,835 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 22:12:39,835 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 22:12:39,835 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 22:12:39,835 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 22:12:39,835 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 22:12:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-12-08 22:12:39,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 22:12:39,849 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 22:12:39,850 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 22:12:39,851 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 22:12:39,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:12:39,855 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2018-12-08 22:12:39,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 22:12:39,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:39,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:12:39,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:39,884 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 22:12:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:12:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:12:39,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 22:12:39,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 22:12:39,978 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 22:12:39,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 22:12:39,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 22:12:39,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 22:12:39,990 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-12-08 22:12:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 22:12:40,019 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-12-08 22:12:40,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 22:12:40,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-08 22:12:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 22:12:40,026 INFO L225 Difference]: With dead ends: 40 [2018-12-08 22:12:40,026 INFO L226 Difference]: Without dead ends: 26 [2018-12-08 22:12:40,028 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 22:12:40,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-08 22:12:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-08 22:12:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 22:12:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-12-08 22:12:40,054 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-12-08 22:12:40,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 22:12:40,054 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-12-08 22:12:40,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 22:12:40,054 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-12-08 22:12:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-08 22:12:40,055 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 22:12:40,055 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 22:12:40,056 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 22:12:40,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:12:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2018-12-08 22:12:40,056 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 22:12:40,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:12:40,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,057 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 22:12:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:12:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:12:40,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 22:12:40,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 22:12:40,117 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 22:12:40,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 22:12:40,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 22:12:40,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 22:12:40,119 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-12-08 22:12:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 22:12:40,133 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-12-08 22:12:40,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 22:12:40,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-08 22:12:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 22:12:40,134 INFO L225 Difference]: With dead ends: 44 [2018-12-08 22:12:40,134 INFO L226 Difference]: Without dead ends: 32 [2018-12-08 22:12:40,135 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 22:12:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-08 22:12:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-08 22:12:40,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-08 22:12:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-12-08 22:12:40,139 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-12-08 22:12:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 22:12:40,139 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-12-08 22:12:40,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 22:12:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-12-08 22:12:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-08 22:12:40,140 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 22:12:40,140 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 22:12:40,140 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 22:12:40,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:12:40,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2018-12-08 22:12:40,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 22:12:40,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:12:40,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,142 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 22:12:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:12:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 22:12:40,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 22:12:40,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 22:12:40,231 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 22:12:40,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 22:12:40,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 22:12:40,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 22:12:40,231 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2018-12-08 22:12:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 22:12:40,259 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-08 22:12:40,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 22:12:40,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-12-08 22:12:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 22:12:40,260 INFO L225 Difference]: With dead ends: 36 [2018-12-08 22:12:40,260 INFO L226 Difference]: Without dead ends: 32 [2018-12-08 22:12:40,260 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-12-08 22:12:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-08 22:12:40,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-08 22:12:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-08 22:12:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-12-08 22:12:40,263 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2018-12-08 22:12:40,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 22:12:40,263 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-12-08 22:12:40,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 22:12:40,264 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-12-08 22:12:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 22:12:40,264 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 22:12:40,264 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-08 22:12:40,264 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 22:12:40,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:12:40,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1423155149, now seen corresponding path program 1 times [2018-12-08 22:12:40,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 22:12:40,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:12:40,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,265 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 22:12:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:12:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 22:12:40,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 22:12:40,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 22:12:40,305 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 22:12:40,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 22:12:40,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 22:12:40,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 22:12:40,306 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2018-12-08 22:12:40,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 22:12:40,319 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-12-08 22:12:40,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 22:12:40,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-12-08 22:12:40,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 22:12:40,319 INFO L225 Difference]: With dead ends: 48 [2018-12-08 22:12:40,320 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 22:12:40,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 22:12:40,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 22:12:40,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-12-08 22:12:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 22:12:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-08 22:12:40,323 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-12-08 22:12:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 22:12:40,323 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-08 22:12:40,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 22:12:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-08 22:12:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 22:12:40,324 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 22:12:40,324 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-08 22:12:40,324 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 22:12:40,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:12:40,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1226641644, now seen corresponding path program 1 times [2018-12-08 22:12:40,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 22:12:40,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:12:40,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,325 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 22:12:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:12:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 22:12:40,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 22:12:40,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 22:12:40,360 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 22:12:40,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 22:12:40,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 22:12:40,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 22:12:40,361 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-12-08 22:12:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 22:12:40,367 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-12-08 22:12:40,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 22:12:40,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-12-08 22:12:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 22:12:40,368 INFO L225 Difference]: With dead ends: 40 [2018-12-08 22:12:40,368 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 22:12:40,368 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 22:12:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 22:12:40,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-12-08 22:12:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 22:12:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-08 22:12:40,371 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2018-12-08 22:12:40,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 22:12:40,371 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-08 22:12:40,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 22:12:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-08 22:12:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 22:12:40,372 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 22:12:40,372 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-08 22:12:40,372 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 22:12:40,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:12:40,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1255270795, now seen corresponding path program 1 times [2018-12-08 22:12:40,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 22:12:40,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:12:40,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 22:12:40,373 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 22:12:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:12:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 22:12:40,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 22:12:40,464 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 22:12:40,464 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-12-08 22:12:40,466 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [7], [11], [12], [16], [18], [21], [23], [29], [32], [33], [35], [39], [40], [41], [42], [43], [44], [45], [47], [48], [49], [50] [2018-12-08 22:12:40,487 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 22:12:40,487 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 22:12:40,597 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 22:12:40,598 INFO L272 AbstractInterpreter]: Visited 25 different actions 61 times. Merged at 10 different actions 16 times. Never widened. Performed 110 root evaluator evaluations with a maximum evaluation depth of 4. Performed 110 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-12-08 22:12:40,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 22:12:40,604 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 22:12:40,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 22:12:40,604 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 22:12:40,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 22:12:40,611 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 22:12:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 22:12:40,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 22:12:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 22:12:40,664 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 22:12:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 22:12:40,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 22:12:40,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 11] total 15 [2018-12-08 22:12:40,782 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 22:12:40,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 22:12:40,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 22:12:40,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-12-08 22:12:40,782 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-12-08 22:12:40,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 22:12:40,789 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2018-12-08 22:12:40,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 22:12:40,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-12-08 22:12:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 22:12:40,790 INFO L225 Difference]: With dead ends: 34 [2018-12-08 22:12:40,790 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 22:12:40,790 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-12-08 22:12:40,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 22:12:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 22:12:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 22:12:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 22:12:40,791 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-08 22:12:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 22:12:40,791 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 22:12:40,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 22:12:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 22:12:40,791 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 22:12:40,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 22:12:40,803 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 22:12:40,803 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 22:12:40,804 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-12-08 22:12:40,804 INFO L451 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: true [2018-12-08 22:12:40,804 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-12-08 22:12:40,804 INFO L448 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-12-08 22:12:40,804 INFO L448 ceAbstractionStarter]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2018-12-08 22:12:40,804 INFO L451 ceAbstractionStarter]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2018-12-08 22:12:40,804 INFO L448 ceAbstractionStarter]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2018-12-08 22:12:40,804 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 22:12:40,804 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 22:12:40,804 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 22:12:40,804 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 22:12:40,804 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2018-12-08 22:12:40,804 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2018-12-08 22:12:40,804 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L451 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: true [2018-12-08 22:12:40,805 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L448 ceAbstractionStarter]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L451 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: true [2018-12-08 22:12:40,805 INFO L448 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L448 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-12-08 22:12:40,805 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2018-12-08 22:12:40,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 10:12:40 BoogieIcfgContainer [2018-12-08 22:12:40,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 22:12:40,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 22:12:40,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 22:12:40,808 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 22:12:40,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:12:39" (3/4) ... [2018-12-08 22:12:40,810 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 22:12:40,814 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 22:12:40,814 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2018-12-08 22:12:40,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 22:12:40,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-12-08 22:12:40,817 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-08 22:12:40,817 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 22:12:40,817 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 22:12:40,846 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7fa3e896-7805-4e86-978c-07ff7d9707ba/bin-2019/utaipan/witness.graphml [2018-12-08 22:12:40,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 22:12:40,847 INFO L168 Benchmark]: Toolchain (without parser) took 1359.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 962.4 MB in the beginning and 917.1 MB in the end (delta: 45.4 MB). Peak memory consumption was 146.5 MB. Max. memory is 11.5 GB. [2018-12-08 22:12:40,848 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 22:12:40,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.36 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-08 22:12:40,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.41 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 22:12:40,849 INFO L168 Benchmark]: Boogie Preprocessor took 10.40 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 22:12:40,849 INFO L168 Benchmark]: RCFGBuilder took 152.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-08 22:12:40,850 INFO L168 Benchmark]: TraceAbstraction took 1014.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 922.5 MB in the end (delta: 165.0 MB). Peak memory consumption was 165.0 MB. Max. memory is 11.5 GB. [2018-12-08 22:12:40,850 INFO L168 Benchmark]: Witness Printer took 38.94 ms. Allocated memory is still 1.1 GB. Free memory was 922.5 MB in the beginning and 917.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 22:12:40,852 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.36 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.41 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.40 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 152.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1014.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 922.5 MB in the end (delta: 165.0 MB). Peak memory consumption was 165.0 MB. Max. memory is 11.5 GB. * Witness Printer took 38.94 ms. Allocated memory is still 1.1 GB. Free memory was 922.5 MB in the beginning and 917.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 167 SDtfs, 8 SDslu, 549 SDs, 0 SdLazy, 70 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 11822 SizeOfPredicates, 3 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 16/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...