./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/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 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 14:11:42,995 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:11:42,996 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:11:43,004 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:11:43,004 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:11:43,004 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:11:43,005 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:11:43,007 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:11:43,008 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:11:43,008 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:11:43,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:11:43,009 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:11:43,010 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:11:43,011 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:11:43,012 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:11:43,012 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:11:43,013 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:11:43,014 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:11:43,015 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:11:43,017 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:11:43,017 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:11:43,018 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:11:43,020 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:11:43,020 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:11:43,020 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:11:43,021 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:11:43,021 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:11:43,022 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:11:43,023 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:11:43,023 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:11:43,023 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:11:43,024 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:11:43,024 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:11:43,024 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:11:43,025 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:11:43,025 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:11:43,026 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 14:11:43,036 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:11:43,036 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:11:43,037 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:11:43,037 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 14:11:43,037 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 14:11:43,038 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 14:11:43,038 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 14:11:43,038 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 14:11:43,038 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 14:11:43,038 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 14:11:43,038 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 14:11:43,039 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 14:11:43,039 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 14:11:43,039 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:11:43,039 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:11:43,040 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:11:43,040 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:11:43,040 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:11:43,040 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:11:43,040 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:11:43,040 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:11:43,040 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:11:43,041 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:11:43,041 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:11:43,041 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:11:43,041 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:11:43,041 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:11:43,041 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:11:43,042 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:11:43,042 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:11:43,042 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:11:43,042 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:11:43,042 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:11:43,042 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 14:11:43,043 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:11:43,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:11:43,043 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 14:11:43,043 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_5550081d-8025-4dcf-bbb7-5dc1711923c7/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 -> 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 [2018-11-18 14:11:43,067 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:11:43,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:11:43,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:11:43,081 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:11:43,082 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:11:43,083 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/../../sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i [2018-11-18 14:11:43,130 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/data/22f28be44/2a6a27f0aa4948e1a7575bd6795f3ac9/FLAG81baf16c8 [2018-11-18 14:11:43,461 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:11:43,462 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i [2018-11-18 14:11:43,465 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/data/22f28be44/2a6a27f0aa4948e1a7575bd6795f3ac9/FLAG81baf16c8 [2018-11-18 14:11:43,474 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/data/22f28be44/2a6a27f0aa4948e1a7575bd6795f3ac9 [2018-11-18 14:11:43,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:11:43,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 14:11:43,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:11:43,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:11:43,483 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:11:43,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d47757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43, skipping insertion in model container [2018-11-18 14:11:43,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:11:43,512 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:11:43,627 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:11:43,629 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:11:43,638 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:11:43,648 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:11:43,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43 WrapperNode [2018-11-18 14:11:43,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:11:43,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 14:11:43,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 14:11:43,649 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 14:11:43,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 14:11:43,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:11:43,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:11:43,663 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:11:43,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... [2018-11-18 14:11:43,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:11:43,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:11:43,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:11:43,675 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:11:43,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/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 [2018-11-18 14:11:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:11:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:11:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:11:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:11:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:11:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:11:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 14:11:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 14:11:43,838 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:11:43,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:11:43 BoogieIcfgContainer [2018-11-18 14:11:43,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:11:43,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:11:43,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:11:43,840 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:11:43,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:11:43" (1/3) ... [2018-11-18 14:11:43,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:11:43, skipping insertion in model container [2018-11-18 14:11:43,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:11:43" (2/3) ... [2018-11-18 14:11:43,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:11:43, skipping insertion in model container [2018-11-18 14:11:43,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:11:43" (3/3) ... [2018-11-18 14:11:43,842 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_true-unreach-call_true-termination.c.i [2018-11-18 14:11:43,849 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:11:43,854 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:11:43,863 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:11:43,888 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:11:43,888 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:11:43,888 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:11:43,888 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:11:43,889 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:11:43,889 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:11:43,889 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:11:43,889 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:11:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 14:11:43,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 14:11:43,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:11:43,903 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:11:43,905 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:11:43,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:11:43,910 INFO L82 PathProgramCache]: Analyzing trace with hash 536890419, now seen corresponding path program 1 times [2018-11-18 14:11:43,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:11:43,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:43,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:11:43,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:43,952 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:11:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:11:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:43,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:11:43,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:11:43,991 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:11:43,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:11:44,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:11:44,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:11:44,004 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-18 14:11:44,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:11:44,019 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-18 14:11:44,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:11:44,020 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-18 14:11:44,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:11:44,024 INFO L225 Difference]: With dead ends: 34 [2018-11-18 14:11:44,025 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 14:11:44,027 INFO L604 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 [2018-11-18 14:11:44,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 14:11:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 14:11:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 14:11:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 14:11:44,055 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-18 14:11:44,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:11:44,056 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 14:11:44,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:11:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 14:11:44,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 14:11:44,057 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:11:44,057 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:11:44,057 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:11:44,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:11:44,057 INFO L82 PathProgramCache]: Analyzing trace with hash 704732235, now seen corresponding path program 1 times [2018-11-18 14:11:44,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:11:44,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:44,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:11:44,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:44,059 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:11:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:11:44,265 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 16 [2018-11-18 14:11:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:44,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:11:44,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 14:11:44,332 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:11:44,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 14:11:44,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 14:11:44,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 14:11:44,333 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2018-11-18 14:11:44,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:11:44,428 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-18 14:11:44,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 14:11:44,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-11-18 14:11:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:11:44,429 INFO L225 Difference]: With dead ends: 22 [2018-11-18 14:11:44,429 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 14:11:44,430 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-18 14:11:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 14:11:44,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 14:11:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 14:11:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-18 14:11:44,434 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-18 14:11:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:11:44,435 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-18 14:11:44,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 14:11:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-18 14:11:44,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 14:11:44,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:11:44,436 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:11:44,436 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:11:44,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:11:44,436 INFO L82 PathProgramCache]: Analyzing trace with hash -796629243, now seen corresponding path program 1 times [2018-11-18 14:11:44,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:11:44,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:44,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:11:44,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:44,438 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:11:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:11:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:44,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:11:44,593 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:11:44,594 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-18 14:11:44,599 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [24], [31], [34], [36], [42], [43], [44], [46] [2018-11-18 14:11:44,628 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:11:44,628 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:11:44,707 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:11:44,708 INFO L272 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Performed 36 root evaluator evaluations with a maximum evaluation depth of 4. Performed 36 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-11-18 14:11:44,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:11:44,716 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:11:44,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:11:44,716 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/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 [2018-11-18 14:11:44,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:11:44,723 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:11:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:11:44,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:11:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:44,827 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:11:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:44,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:11:44,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-18 14:11:44,932 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:11:44,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 14:11:44,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 14:11:44,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-11-18 14:11:44,933 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2018-11-18 14:11:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:11:44,996 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-18 14:11:44,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 14:11:44,997 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2018-11-18 14:11:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:11:44,997 INFO L225 Difference]: With dead ends: 24 [2018-11-18 14:11:44,997 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 14:11:44,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-11-18 14:11:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 14:11:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 14:11:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 14:11:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 14:11:45,002 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-18 14:11:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:11:45,002 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 14:11:45,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 14:11:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 14:11:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 14:11:45,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:11:45,003 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:11:45,003 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:11:45,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:11:45,004 INFO L82 PathProgramCache]: Analyzing trace with hash -495998145, now seen corresponding path program 2 times [2018-11-18 14:11:45,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:11:45,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:45,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:11:45,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:45,005 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:11:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:11:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:45,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:11:45,108 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:11:45,109 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 14:11:45,109 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 14:11:45,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:11:45,109 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/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 [2018-11-18 14:11:45,123 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 14:11:45,123 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 14:11:45,132 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 14:11:45,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:11:45,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:11:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:45,187 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:11:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:45,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:11:45,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2018-11-18 14:11:45,295 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:11:45,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 14:11:45,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 14:11:45,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-11-18 14:11:45,296 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 11 states. [2018-11-18 14:11:45,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:11:45,388 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-11-18 14:11:45,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 14:11:45,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-11-18 14:11:45,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:11:45,389 INFO L225 Difference]: With dead ends: 30 [2018-11-18 14:11:45,389 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 14:11:45,389 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-11-18 14:11:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 14:11:45,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-18 14:11:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 14:11:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-18 14:11:45,392 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2018-11-18 14:11:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:11:45,393 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-18 14:11:45,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 14:11:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-18 14:11:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 14:11:45,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:11:45,393 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:11:45,393 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:11:45,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:11:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash 209018931, now seen corresponding path program 3 times [2018-11-18 14:11:45,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:11:45,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:45,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:11:45,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:11:45,394 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:11:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:11:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 14:11:45,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:11:45,520 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:11:45,520 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 14:11:45,520 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 14:11:45,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:11:45,520 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/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 [2018-11-18 14:11:45,527 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 14:11:45,528 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 14:11:45,533 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 14:11:45,534 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:11:45,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:11:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:45,600 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:11:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:11:45,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:11:45,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 22 [2018-11-18 14:11:45,719 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:11:45,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 14:11:45,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 14:11:45,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-11-18 14:11:45,721 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 14 states. [2018-11-18 14:11:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:11:45,836 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-18 14:11:45,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 14:11:45,836 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2018-11-18 14:11:45,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:11:45,837 INFO L225 Difference]: With dead ends: 26 [2018-11-18 14:11:45,837 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 14:11:45,837 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2018-11-18 14:11:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 14:11:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 14:11:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 14:11:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 14:11:45,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-18 14:11:45,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:11:45,838 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:11:45,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 14:11:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 14:11:45,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 14:11:45,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 14:11:45,891 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 14:11:45,891 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:11:45,891 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:11:45,891 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 14:11:45,891 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 14:11:45,891 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 14:11:45,891 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2018-11-18 14:11:45,892 INFO L421 ceAbstractionStarter]: At program point L22(line 22) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 0)) [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 20) no Hoare annotation was computed. [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-18 14:11:45,892 INFO L421 ceAbstractionStarter]: At program point L17-3(lines 17 20) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~y~0 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 10 25) no Hoare annotation was computed. [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2018-11-18 14:11:45,892 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 14:11:45,892 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 14:11:45,893 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 14:11:45,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:11:45 BoogieIcfgContainer [2018-11-18 14:11:45,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:11:45,909 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:11:45,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:11:45,909 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:11:45,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:11:43" (3/4) ... [2018-11-18 14:11:45,912 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 14:11:45,915 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 14:11:45,916 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 14:11:45,916 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 14:11:45,918 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-18 14:11:45,918 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-18 14:11:45,918 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 14:11:45,948 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5550081d-8025-4dcf-bbb7-5dc1711923c7/bin-2019/utaipan/witness.graphml [2018-11-18 14:11:45,948 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:11:45,949 INFO L168 Benchmark]: Toolchain (without parser) took 2471.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.0 MB). Free memory was 959.8 MB in the beginning and 1.2 GB in the end (delta: -225.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:11:45,949 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:11:45,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-18 14:11:45,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.88 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:11:45,950 INFO L168 Benchmark]: Boogie Preprocessor took 12.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.0 MB in the beginning and 946.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:11:45,950 INFO L168 Benchmark]: RCFGBuilder took 162.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -157.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:11:45,950 INFO L168 Benchmark]: TraceAbstraction took 2061.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 789.6 MB in the end (delta: 313.9 MB). Peak memory consumption was 313.9 MB. Max. memory is 11.5 GB. [2018-11-18 14:11:45,951 INFO L168 Benchmark]: Witness Printer took 39.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:11:45,952 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.88 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.0 MB in the beginning and 946.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -157.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2061.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 789.6 MB in the end (delta: 313.9 MB). Peak memory consumption was 313.9 MB. Max. memory is 11.5 GB. * Witness Printer took 39.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 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: 17]: Loop Invariant Derived loop invariant: y + i <= x + j && x + j <= y + i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 28 SDslu, 247 SDs, 0 SdLazy, 204 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 13 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 27 HoareAnnotationTreeSize, 13 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 136 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 131 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 23129 SizeOfPredicates, 21 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 71 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...