./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:29:23,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:29:23,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:29:23,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:29:23,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:29:23,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:29:23,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:29:23,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:29:23,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:29:23,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:29:23,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:29:23,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:29:23,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:29:23,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:29:23,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:29:23,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:29:23,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:29:23,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:29:23,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:29:23,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:29:23,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:29:23,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:29:23,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:29:23,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:29:23,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:29:23,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:29:23,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:29:23,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:29:23,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:29:23,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:29:23,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:29:23,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:29:23,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:29:23,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:29:23,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:29:23,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:29:23,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:29:23,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:29:23,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:29:23,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:29:23,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:29:23,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:29:23,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:29:23,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:29:23,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:29:23,488 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:29:23,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:29:23,489 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:29:23,489 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:29:23,489 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:29:23,489 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:29:23,489 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:29:23,490 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:29:23,490 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:29:23,490 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:29:23,490 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:29:23,490 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:29:23,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:29:23,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:29:23,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:29:23,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:29:23,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:29:23,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:29:23,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:29:23,492 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:29:23,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:29:23,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:29:23,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:29:23,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:29:23,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:29:23,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:29:23,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:29:23,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:29:23,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:29:23,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:29:23,494 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:29:23,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:29:23,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:29:23,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:29:23,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:29:23,495 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 [2020-11-28 07:29:23,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:29:23,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:29:23,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:29:23,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:29:23,782 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:29:23,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2020-11-28 07:29:23,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/data/e4a82d407/ee2351ef5905451294616c63a045008e/FLAG67ffc15a1 [2020-11-28 07:29:24,432 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:29:24,432 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2020-11-28 07:29:24,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/data/e4a82d407/ee2351ef5905451294616c63a045008e/FLAG67ffc15a1 [2020-11-28 07:29:24,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/data/e4a82d407/ee2351ef5905451294616c63a045008e [2020-11-28 07:29:24,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:29:24,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:29:24,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:24,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:29:24,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:29:24,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6cdd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:24, skipping insertion in model container [2020-11-28 07:29:24,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:29:24" (1/1) ... [2020-11-28 07:29:24,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:29:24,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:29:24,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:24,986 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:29:25,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:29:25,051 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:29:25,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25 WrapperNode [2020-11-28 07:29:25,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:29:25,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:25,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:29:25,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:29:25,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... [2020-11-28 07:29:25,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... [2020-11-28 07:29:25,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:29:25,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:29:25,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:29:25,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:29:25,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... [2020-11-28 07:29:25,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... [2020-11-28 07:29:25,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... [2020-11-28 07:29:25,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... [2020-11-28 07:29:25,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... [2020-11-28 07:29:25,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... [2020-11-28 07:29:25,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... [2020-11-28 07:29:25,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:29:25,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:29:25,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:29:25,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:29:25,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:29:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:29:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:29:25,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:29:25,622 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 07:29:25,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:25 BoogieIcfgContainer [2020-11-28 07:29:25,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:29:25,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:29:25,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:29:25,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:29:25,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:29:24" (1/3) ... [2020-11-28 07:29:25,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccbd707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:25, skipping insertion in model container [2020-11-28 07:29:25,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:29:25" (2/3) ... [2020-11-28 07:29:25,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccbd707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:29:25, skipping insertion in model container [2020-11-28 07:29:25,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:25" (3/3) ... [2020-11-28 07:29:25,657 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig7b.c [2020-11-28 07:29:25,670 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:29:25,677 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 07:29:25,711 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:29:25,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:29:25,737 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:29:25,737 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:29:25,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:29:25,738 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:29:25,738 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:29:25,738 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:29:25,739 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:29:25,754 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-11-28 07:29:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:29:25,759 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:25,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:29:25,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:25,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-11-28 07:29:25,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:25,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384914592] [2020-11-28 07:29:25,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:25,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384914592] [2020-11-28 07:29:25,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:25,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:29:25,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323036892] [2020-11-28 07:29:25,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:25,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:25,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:25,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:25,954 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-11-28 07:29:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:26,026 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-28 07:29:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:26,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 07:29:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:26,038 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:29:26,038 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 07:29:26,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 07:29:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 07:29:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 07:29:26,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-28 07:29:26,071 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 4 [2020-11-28 07:29:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:26,072 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-28 07:29:26,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-28 07:29:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:29:26,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:26,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:29:26,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:29:26,073 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:26,075 INFO L82 PathProgramCache]: Analyzing trace with hash 29869546, now seen corresponding path program 1 times [2020-11-28 07:29:26,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:26,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268641599] [2020-11-28 07:29:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:26,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268641599] [2020-11-28 07:29:26,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:26,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:29:26,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599186749] [2020-11-28 07:29:26,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:26,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:26,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:26,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,116 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-11-28 07:29:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:26,132 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-28 07:29:26,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:26,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:29:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:26,133 INFO L225 Difference]: With dead ends: 15 [2020-11-28 07:29:26,134 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 07:29:26,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 07:29:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 07:29:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 07:29:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-28 07:29:26,140 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2020-11-28 07:29:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:26,140 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-28 07:29:26,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-28 07:29:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:29:26,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:26,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:29:26,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:29:26,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:26,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:26,142 INFO L82 PathProgramCache]: Analyzing trace with hash 29869738, now seen corresponding path program 1 times [2020-11-28 07:29:26,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:26,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936676569] [2020-11-28 07:29:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:26,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936676569] [2020-11-28 07:29:26,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:26,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:29:26,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791761517] [2020-11-28 07:29:26,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:26,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:26,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:26,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,180 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2020-11-28 07:29:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:26,218 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-11-28 07:29:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:26,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:29:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:26,221 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:29:26,221 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:29:26,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:29:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 07:29:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:29:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-28 07:29:26,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2020-11-28 07:29:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:26,226 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-28 07:29:26,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-28 07:29:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:29:26,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:26,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:29:26,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:29:26,229 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-11-28 07:29:26,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:26,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993590189] [2020-11-28 07:29:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:26,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993590189] [2020-11-28 07:29:26,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:26,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:26,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040826599] [2020-11-28 07:29:26,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:26,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:26,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:26,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,283 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-11-28 07:29:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:26,299 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-11-28 07:29:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:26,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:29:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:26,300 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:29:26,300 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:29:26,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:29:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-28 07:29:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:29:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-28 07:29:26,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2020-11-28 07:29:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:26,303 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-28 07:29:26,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-28 07:29:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:29:26,313 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:26,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:29:26,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:29:26,314 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:26,315 INFO L82 PathProgramCache]: Analyzing trace with hash 925955982, now seen corresponding path program 1 times [2020-11-28 07:29:26,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:26,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86607583] [2020-11-28 07:29:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:26,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86607583] [2020-11-28 07:29:26,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:26,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:26,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844288646] [2020-11-28 07:29:26,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:26,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:26,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:26,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,354 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-11-28 07:29:26,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:26,370 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-28 07:29:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:26,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:29:26,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:26,371 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:29:26,371 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 07:29:26,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 07:29:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-28 07:29:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:29:26,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-28 07:29:26,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 6 [2020-11-28 07:29:26,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:26,375 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-28 07:29:26,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:26,375 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-28 07:29:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:29:26,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:29:26,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:29:26,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:29:26,376 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:29:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:29:26,377 INFO L82 PathProgramCache]: Analyzing trace with hash 925961940, now seen corresponding path program 1 times [2020-11-28 07:29:26,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:29:26,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820610188] [2020-11-28 07:29:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:29:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:29:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:29:26,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820610188] [2020-11-28 07:29:26,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:29:26,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:29:26,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433689937] [2020-11-28 07:29:26,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:29:26,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:29:26,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:29:26,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,435 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2020-11-28 07:29:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:29:26,456 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-11-28 07:29:26,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:29:26,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:29:26,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:29:26,457 INFO L225 Difference]: With dead ends: 12 [2020-11-28 07:29:26,457 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:29:26,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:29:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:29:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:29:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:29:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:29:26,458 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-11-28 07:29:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:29:26,458 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:29:26,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:29:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:29:26,459 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:29:26,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:29:26,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:29:26,525 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 07:29:26,525 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:29:26,525 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-28 07:29:26,525 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-11-28 07:29:26,525 INFO L274 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-11-28 07:29:26,526 INFO L274 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-11-28 07:29:26,526 INFO L274 CegarLoopResult]: For program point L23(lines 23 29) no Hoare annotation was computed. [2020-11-28 07:29:26,526 INFO L274 CegarLoopResult]: For program point L21(lines 21 29) no Hoare annotation was computed. [2020-11-28 07:29:26,526 INFO L270 CegarLoopResult]: At program point L23-2(lines 20 30) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~z~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-11-28 07:29:26,526 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 07:29:26,526 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-28 07:29:26,526 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:29:26,526 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2020-11-28 07:29:26,527 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-28 07:29:26,527 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-28 07:29:26,527 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-28 07:29:26,527 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-11-28 07:29:26,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:29:26 BoogieIcfgContainer [2020-11-28 07:29:26,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:29:26,542 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:29:26,542 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:29:26,542 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:29:26,543 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:29:25" (3/4) ... [2020-11-28 07:29:26,546 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:29:26,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:29:26,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:29:26,559 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:29:26,616 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a2655a2-dde2-427b-bde8-9fa1266481c2/bin/utaipan/witness.graphml [2020-11-28 07:29:26,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:29:26,618 INFO L168 Benchmark]: Toolchain (without parser) took 1841.47 ms. Allocated memory is still 123.7 MB. Free memory was 93.7 MB in the beginning and 84.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:26,618 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:26,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.37 ms. Allocated memory is still 123.7 MB. Free memory was 93.7 MB in the beginning and 100.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:26,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.77 ms. Allocated memory is still 123.7 MB. Free memory was 100.5 MB in the beginning and 99.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:26,619 INFO L168 Benchmark]: Boogie Preprocessor took 49.51 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 98.2 MB in the end (delta: 773.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:29:26,620 INFO L168 Benchmark]: RCFGBuilder took 464.44 ms. Allocated memory is still 123.7 MB. Free memory was 98.2 MB in the beginning and 86.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:26,620 INFO L168 Benchmark]: TraceAbstraction took 914.70 ms. Allocated memory is still 123.7 MB. Free memory was 86.0 MB in the beginning and 87.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:26,621 INFO L168 Benchmark]: Witness Printer took 74.10 ms. Allocated memory is still 123.7 MB. Free memory was 87.1 MB in the beginning and 84.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:29:26,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 81.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.37 ms. Allocated memory is still 123.7 MB. Free memory was 93.7 MB in the beginning and 100.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.77 ms. Allocated memory is still 123.7 MB. Free memory was 100.5 MB in the beginning and 99.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.51 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 98.2 MB in the end (delta: 773.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 464.44 ms. Allocated memory is still 123.7 MB. Free memory was 98.2 MB in the beginning and 86.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 914.70 ms. Allocated memory is still 123.7 MB. Free memory was 86.0 MB in the beginning and 87.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. * Witness Printer took 74.10 ms. Allocated memory is still 123.7 MB. Free memory was 87.1 MB in the beginning and 84.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (x <= 2147483647 && z <= 2147483647) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 53 SDslu, 0 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 10 HoareAnnotationTreeSize, 1 FomulaSimplifications, 84 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...