./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/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 6b2483ed4878f440f5477fb40e4fe96958613e0f ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 08:44:25,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 08:44:25,650 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 08:44:25,658 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 08:44:25,658 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 08:44:25,659 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 08:44:25,659 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 08:44:25,660 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 08:44:25,661 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 08:44:25,662 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 08:44:25,663 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 08:44:25,663 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 08:44:25,663 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 08:44:25,664 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 08:44:25,665 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 08:44:25,665 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 08:44:25,666 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 08:44:25,667 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 08:44:25,669 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 08:44:25,670 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 08:44:25,670 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 08:44:25,671 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 08:44:25,673 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 08:44:25,673 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 08:44:25,673 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 08:44:25,674 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 08:44:25,674 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 08:44:25,675 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 08:44:25,676 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 08:44:25,676 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 08:44:25,676 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 08:44:25,677 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 08:44:25,677 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 08:44:25,677 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 08:44:25,678 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 08:44:25,678 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 08:44:25,678 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 08:44:25,687 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 08:44:25,688 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 08:44:25,688 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 08:44:25,688 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 08:44:25,689 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 08:44:25,689 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 08:44:25,689 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 08:44:25,689 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 08:44:25,689 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 08:44:25,689 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 08:44:25,689 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 08:44:25,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 08:44:25,690 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 08:44:25,690 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 08:44:25,690 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 08:44:25,690 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 08:44:25,690 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 08:44:25,690 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 08:44:25,690 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 08:44:25,691 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 08:44:25,691 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 08:44:25,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 08:44:25,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 08:44:25,692 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 08:44:25,692 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_03a890bd-0b28-4343-b1e3-af5290bbb7ab/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 -> 6b2483ed4878f440f5477fb40e4fe96958613e0f [2018-11-10 08:44:25,715 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 08:44:25,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 08:44:25,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 08:44:25,728 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 08:44:25,728 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 08:44:25,728 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/../../sv-benchmarks/c/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i [2018-11-10 08:44:25,773 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/data/d7d2bf157/e492ea7306d9400592a5fa898466f9b6/FLAG75f8827d7 [2018-11-10 08:44:26,176 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 08:44:26,177 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/sv-benchmarks/c/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i [2018-11-10 08:44:26,182 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/data/d7d2bf157/e492ea7306d9400592a5fa898466f9b6/FLAG75f8827d7 [2018-11-10 08:44:26,191 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/data/d7d2bf157/e492ea7306d9400592a5fa898466f9b6 [2018-11-10 08:44:26,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 08:44:26,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 08:44:26,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 08:44:26,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 08:44:26,197 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 08:44:26,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4541c043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26, skipping insertion in model container [2018-11-10 08:44:26,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 08:44:26,218 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 08:44:26,323 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:44:26,325 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 08:44:26,336 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:44:26,343 INFO L193 MainTranslator]: Completed translation [2018-11-10 08:44:26,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26 WrapperNode [2018-11-10 08:44:26,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 08:44:26,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 08:44:26,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 08:44:26,345 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 08:44:26,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 08:44:26,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 08:44:26,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 08:44:26,356 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 08:44:26,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... [2018-11-10 08:44:26,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 08:44:26,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 08:44:26,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 08:44:26,374 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 08:44:26,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/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 [2018-11-10 08:44:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 08:44:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 08:44:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 08:44:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 08:44:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 08:44:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 08:44:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 08:44:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 08:44:26,552 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 08:44:26,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:44:26 BoogieIcfgContainer [2018-11-10 08:44:26,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 08:44:26,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 08:44:26,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 08:44:26,555 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 08:44:26,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 08:44:26" (1/3) ... [2018-11-10 08:44:26,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1a38df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:44:26, skipping insertion in model container [2018-11-10 08:44:26,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:44:26" (2/3) ... [2018-11-10 08:44:26,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1a38df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:44:26, skipping insertion in model container [2018-11-10 08:44:26,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:44:26" (3/3) ... [2018-11-10 08:44:26,558 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_variant_true-unreach-call_true-termination.c.i [2018-11-10 08:44:26,566 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 08:44:26,572 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 08:44:26,584 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 08:44:26,610 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 08:44:26,611 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 08:44:26,611 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 08:44:26,611 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 08:44:26,611 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 08:44:26,611 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 08:44:26,611 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 08:44:26,611 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 08:44:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 08:44:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 08:44:26,630 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:44:26,631 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:44:26,632 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:44:26,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:44:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash 380045771, now seen corresponding path program 1 times [2018-11-10 08:44:26,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:44:26,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:26,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:44:26,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:26,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:44:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:44:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:26,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:44:26,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 08:44:26,723 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:44:26,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 08:44:26,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 08:44:26,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 08:44:26,735 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-10 08:44:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:44:26,747 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-11-10 08:44:26,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 08:44:26,748 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-10 08:44:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:44:26,753 INFO L225 Difference]: With dead ends: 35 [2018-11-10 08:44:26,753 INFO L226 Difference]: Without dead ends: 15 [2018-11-10 08:44:26,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 08:44:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-10 08:44:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-10 08:44:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-10 08:44:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-10 08:44:26,782 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-11-10 08:44:26,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:44:26,782 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-10 08:44:26,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 08:44:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-10 08:44:26,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 08:44:26,783 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:44:26,783 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:44:26,783 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:44:26,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:44:26,784 INFO L82 PathProgramCache]: Analyzing trace with hash 137515447, now seen corresponding path program 1 times [2018-11-10 08:44:26,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:44:26,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:26,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:44:26,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:26,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:44:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:44:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:27,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:44:27,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 08:44:27,040 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:44:27,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 08:44:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 08:44:27,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 08:44:27,041 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2018-11-10 08:44:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:44:27,152 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-10 08:44:27,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 08:44:27,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-10 08:44:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:44:27,153 INFO L225 Difference]: With dead ends: 23 [2018-11-10 08:44:27,153 INFO L226 Difference]: Without dead ends: 17 [2018-11-10 08:44:27,154 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-10 08:44:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-10 08:44:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-10 08:44:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 08:44:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-10 08:44:27,158 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-10 08:44:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:44:27,158 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-10 08:44:27,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 08:44:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-10 08:44:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 08:44:27,159 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:44:27,159 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:44:27,159 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:44:27,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:44:27,160 INFO L82 PathProgramCache]: Analyzing trace with hash -431115791, now seen corresponding path program 1 times [2018-11-10 08:44:27,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:44:27,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:27,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:44:27,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:27,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:44:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:44:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:27,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:44:27,330 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:44:27,331 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-11-10 08:44:27,332 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [22], [28], [35], [38], [40], [46], [47], [48], [50] [2018-11-10 08:44:27,369 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 08:44:27,369 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 08:44:27,642 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 08:44:27,643 INFO L272 AbstractInterpreter]: Visited 15 different actions 133 times. Merged at 4 different actions 60 times. Widened at 1 different actions 11 times. Found 1 fixpoints after 1 different actions. Largest state had 9 variables. [2018-11-10 08:44:27,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:44:27,651 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 08:44:27,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:44:27,651 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/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 [2018-11-10 08:44:27,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:44:27,658 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 08:44:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:44:27,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:44:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:27,733 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:44:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:27,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 08:44:27,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2018-11-10 08:44:27,839 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 08:44:27,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 08:44:27,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 08:44:27,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-11-10 08:44:27,840 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2018-11-10 08:44:27,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:44:27,915 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-10 08:44:27,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 08:44:27,916 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2018-11-10 08:44:27,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:44:27,916 INFO L225 Difference]: With dead ends: 25 [2018-11-10 08:44:27,916 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 08:44:27,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-11-10 08:44:27,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 08:44:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 08:44:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 08:44:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-10 08:44:27,920 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-11-10 08:44:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:44:27,921 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-10 08:44:27,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 08:44:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-10 08:44:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 08:44:27,921 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:44:27,921 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:44:27,921 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:44:27,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:44:27,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1424888917, now seen corresponding path program 2 times [2018-11-10 08:44:27,922 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:44:27,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:27,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:44:27,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:27,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:44:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:44:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:28,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:44:28,045 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:44:28,045 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 08:44:28,046 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 08:44:28,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:44:28,046 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:44:28,057 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 08:44:28,058 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 08:44:28,066 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 08:44:28,066 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 08:44:28,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:44:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:28,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:44:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:28,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 08:44:28,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2018-11-10 08:44:28,245 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 08:44:28,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 08:44:28,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 08:44:28,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-11-10 08:44:28,246 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 14 states. [2018-11-10 08:44:28,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:44:28,347 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-11-10 08:44:28,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 08:44:28,348 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2018-11-10 08:44:28,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:44:28,348 INFO L225 Difference]: With dead ends: 31 [2018-11-10 08:44:28,348 INFO L226 Difference]: Without dead ends: 23 [2018-11-10 08:44:28,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2018-11-10 08:44:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-10 08:44:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-10 08:44:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 08:44:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-10 08:44:28,352 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-11-10 08:44:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:44:28,352 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-10 08:44:28,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 08:44:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-10 08:44:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 08:44:28,353 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:44:28,353 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:44:28,354 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:44:28,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:44:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1072393119, now seen corresponding path program 3 times [2018-11-10 08:44:28,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:44:28,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:28,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:44:28,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:44:28,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:44:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:44:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 08:44:28,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:44:28,481 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 08:44:28,481 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 08:44:28,481 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 08:44:28,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:44:28,481 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:44:28,491 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 08:44:28,491 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 08:44:28,500 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 08:44:28,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 08:44:28,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:44:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:28,608 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:44:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:44:28,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 08:44:28,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 25 [2018-11-10 08:44:28,733 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 08:44:28,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 08:44:28,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 08:44:28,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-11-10 08:44:28,734 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 17 states. [2018-11-10 08:44:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:44:28,825 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-11-10 08:44:28,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 08:44:28,825 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 22 [2018-11-10 08:44:28,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:44:28,825 INFO L225 Difference]: With dead ends: 27 [2018-11-10 08:44:28,825 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 08:44:28,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2018-11-10 08:44:28,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 08:44:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 08:44:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 08:44:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 08:44:28,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-10 08:44:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:44:28,826 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:44:28,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 08:44:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 08:44:28,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 08:44:28,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 08:44:28,881 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 08:44:28,882 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:44:28,882 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:44:28,882 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 08:44:28,882 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 08:44:28,882 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 08:44:28,882 INFO L421 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2018-11-10 08:44:28,882 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2018-11-10 08:44:28,882 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2018-11-10 08:44:28,882 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 23) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0 main_~z~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-11-10 08:44:28,882 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-10 08:44:28,883 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 10 28) no Hoare annotation was computed. [2018-11-10 08:44:28,883 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2018-11-10 08:44:28,883 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 28) the Hoare annotation is: true [2018-11-10 08:44:28,883 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-11-10 08:44:28,883 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-10 08:44:28,883 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 08:44:28,883 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 08:44:28,883 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 08:44:28,883 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 08:44:28,883 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 08:44:28,883 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 08:44:28,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 08:44:28 BoogieIcfgContainer [2018-11-10 08:44:28,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 08:44:28,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 08:44:28,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 08:44:28,892 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 08:44:28,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:44:26" (3/4) ... [2018-11-10 08:44:28,894 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 08:44:28,898 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 08:44:28,899 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 08:44:28,899 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 08:44:28,902 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-10 08:44:28,902 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-10 08:44:28,902 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 08:44:28,935 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_03a890bd-0b28-4343-b1e3-af5290bbb7ab/bin-2019/utaipan/witness.graphml [2018-11-10 08:44:28,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 08:44:28,935 INFO L168 Benchmark]: Toolchain (without parser) took 2742.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 960.3 MB in the beginning and 991.1 MB in the end (delta: -30.8 MB). Peak memory consumption was 113.9 MB. Max. memory is 11.5 GB. [2018-11-10 08:44:28,936 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:44:28,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.32 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 08:44:28,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:44:28,937 INFO L168 Benchmark]: Boogie Preprocessor took 17.08 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:44:28,937 INFO L168 Benchmark]: RCFGBuilder took 178.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-10 08:44:28,938 INFO L168 Benchmark]: TraceAbstraction took 2338.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 994.6 MB in the end (delta: 138.1 MB). Peak memory consumption was 138.1 MB. Max. memory is 11.5 GB. [2018-11-10 08:44:28,938 INFO L168 Benchmark]: Witness Printer took 43.22 ms. Allocated memory is still 1.2 GB. Free memory was 994.6 MB in the beginning and 991.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 08:44:28,940 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.32 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.75 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.08 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 178.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2338.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 994.6 MB in the end (delta: 138.1 MB). Peak memory consumption was 138.1 MB. Max. memory is 11.5 GB. * Witness Printer took 43.22 ms. Allocated memory is still 1.2 GB. Free memory was 994.6 MB in the beginning and 991.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x + j <= i + y + z && i + y + z <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 2.2s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 25 SDslu, 309 SDs, 0 SdLazy, 266 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 79 SyntacticMatches, 8 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 33 HoareAnnotationTreeSize, 13 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 139 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 28213 SizeOfPredicates, 21 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 2/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...