./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/bhmr2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/bhmr2007.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/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 cc52fae450c71cb08003ff68124573964734a280 ................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 19:05:15,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:05:15,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:05:15,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:05:15,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:05:15,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:05:15,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:05:15,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:05:15,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:05:15,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:05:15,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:05:15,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:05:15,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:05:15,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:05:15,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:05:15,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:05:15,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:05:15,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:05:15,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:05:15,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:05:15,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:05:15,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:05:15,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:05:15,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:05:15,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:05:15,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:05:15,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:05:15,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:05:15,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:05:15,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:05:15,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:05:15,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:05:15,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:05:15,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:05:15,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:05:15,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:05:15,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:05:15,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:05:15,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:05:15,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:05:15,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:05:15,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:05:15,579 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:05:15,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:05:15,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:05:15,579 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:05:15,580 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:05:15,580 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:05:15,580 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:05:15,580 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:05:15,580 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:05:15,580 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:05:15,580 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:05:15,580 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:05:15,581 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:05:15,581 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:05:15,581 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:05:15,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:05:15,581 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:05:15,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:05:15,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:05:15,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:05:15,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:05:15,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:05:15,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:05:15,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:05:15,582 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:05:15,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:05:15,583 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:05:15,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:05:15,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:05:15,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:05:15,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:05:15,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:05:15,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:05:15,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:05:15,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:05:15,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:05:15,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:05:15,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:05:15,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:05:15,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:05:15,584 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/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 ! 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 -> cc52fae450c71cb08003ff68124573964734a280 [2019-12-07 19:05:15,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:05:15,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:05:15,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:05:15,695 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:05:15,696 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:05:15,696 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/../../sv-benchmarks/c/loop-lit/bhmr2007.i [2019-12-07 19:05:15,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/data/91eb22ff2/dd40c319791a4b2eab55ca742dbf0678/FLAG577ebf1bf [2019-12-07 19:05:16,115 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:05:16,116 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/sv-benchmarks/c/loop-lit/bhmr2007.i [2019-12-07 19:05:16,119 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/data/91eb22ff2/dd40c319791a4b2eab55ca742dbf0678/FLAG577ebf1bf [2019-12-07 19:05:16,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/data/91eb22ff2/dd40c319791a4b2eab55ca742dbf0678 [2019-12-07 19:05:16,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:05:16,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:05:16,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:05:16,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:05:16,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:05:16,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17574348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16, skipping insertion in model container [2019-12-07 19:05:16,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:05:16,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:05:16,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:05:16,694 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:05:16,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:05:16,749 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:05:16,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16 WrapperNode [2019-12-07 19:05:16,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:05:16,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:05:16,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:05:16,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:05:16,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:05:16,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:05:16,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:05:16,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:05:16,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... [2019-12-07 19:05:16,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:05:16,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:05:16,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:05:16,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:05:16,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:05:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:05:16,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:05:16,958 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:05:16,959 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 19:05:16,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:05:16 BoogieIcfgContainer [2019-12-07 19:05:16,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:05:16,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:05:16,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:05:16,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:05:16,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:05:16" (1/3) ... [2019-12-07 19:05:16,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e35bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:05:16, skipping insertion in model container [2019-12-07 19:05:16,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:05:16" (2/3) ... [2019-12-07 19:05:16,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e35bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:05:16, skipping insertion in model container [2019-12-07 19:05:16,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:05:16" (3/3) ... [2019-12-07 19:05:16,964 INFO L109 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2019-12-07 19:05:16,971 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:05:16,975 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:05:16,982 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:05:16,997 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:05:16,997 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:05:16,997 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:05:16,997 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:05:16,997 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:05:16,997 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:05:16,997 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:05:16,998 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:05:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 19:05:17,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 19:05:17,009 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:05:17,010 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 19:05:17,010 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:05:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:05:17,014 INFO L82 PathProgramCache]: Analyzing trace with hash 29776554, now seen corresponding path program 1 times [2019-12-07 19:05:17,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:05:17,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402022566] [2019-12-07 19:05:17,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:05:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:05:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:05:17,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402022566] [2019-12-07 19:05:17,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:05:17,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:05:17,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656273743] [2019-12-07 19:05:17,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:05:17,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:05:17,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:05:17,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:05:17,197 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 5 states. [2019-12-07 19:05:17,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:05:17,247 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-12-07 19:05:17,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:05:17,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 19:05:17,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:05:17,254 INFO L225 Difference]: With dead ends: 21 [2019-12-07 19:05:17,254 INFO L226 Difference]: Without dead ends: 7 [2019-12-07 19:05:17,257 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:05:17,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-12-07 19:05:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 19:05:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 19:05:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-12-07 19:05:17,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-12-07 19:05:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:05:17,279 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-12-07 19:05:17,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:05:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-12-07 19:05:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 19:05:17,280 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:05:17,280 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 19:05:17,280 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:05:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:05:17,280 INFO L82 PathProgramCache]: Analyzing trace with hash 923029898, now seen corresponding path program 1 times [2019-12-07 19:05:17,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:05:17,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121442578] [2019-12-07 19:05:17,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:05:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:05:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:05:17,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121442578] [2019-12-07 19:05:17,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698442224] [2019-12-07 19:05:17,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:05:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:05:17,369 WARN L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 19:05:17,372 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:05:17,421 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 19:05:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:05:17,442 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:05:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:05:17,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640680444] [2019-12-07 19:05:17,483 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-12-07 19:05:17,483 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:05:17,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 19:05:17,493 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 19:05:17,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 19:05:17,587 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 19:05:17,696 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 19:05:17,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:05:17,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2019-12-07 19:05:17,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841113957] [2019-12-07 19:05:17,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 19:05:17,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:05:17,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 19:05:17,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-12-07 19:05:17,699 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 9 states. [2019-12-07 19:05:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:05:17,820 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-12-07 19:05:17,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 19:05:17,820 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2019-12-07 19:05:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:05:17,820 INFO L225 Difference]: With dead ends: 9 [2019-12-07 19:05:17,820 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 19:05:17,821 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2019-12-07 19:05:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 19:05:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 19:05:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 19:05:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 19:05:17,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-12-07 19:05:17,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:05:17,822 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 19:05:17,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 19:05:17,822 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 19:05:17,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 19:05:18,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:05:18,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 19:05:18,097 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 19:05:18,097 INFO L242 CegarLoopResult]: At program point L25(lines 10 26) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (let ((.cse1 (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse0 (* 3 ULTIMATE.start_main_~n~0))) (and (or (< .cse0 (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0 1)) (<= (* 3 ULTIMATE.start_main_~i~0) .cse1)) (or (<= .cse1 0) (<= .cse1 .cse0))))) [2019-12-07 19:05:18,097 INFO L246 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2019-12-07 19:05:18,097 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-12-07 19:05:18,098 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 19:05:18,098 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-12-07 19:05:18,098 INFO L242 CegarLoopResult]: At program point L14-2(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) (and (< .cse0 (+ (* 3 ULTIMATE.start_main_~n~0) 1)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2019-12-07 19:05:18,098 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-12-07 19:05:18,098 INFO L242 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-12-07 19:05:18,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:05:18 BoogieIcfgContainer [2019-12-07 19:05:18,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:05:18,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:05:18,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:05:18,112 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:05:18,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:05:16" (3/4) ... [2019-12-07 19:05:18,115 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 19:05:18,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 19:05:18,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 19:05:18,155 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b825a967-ac13-46ec-ad75-5abce464cd63/bin/utaipan/witness.graphml [2019-12-07 19:05:18,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:05:18,157 INFO L168 Benchmark]: Toolchain (without parser) took 1602.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 942.5 MB in the beginning and 956.4 MB in the end (delta: -14.0 MB). Peak memory consumption was 93.5 MB. Max. memory is 11.5 GB. [2019-12-07 19:05:18,157 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:05:18,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -162.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:05:18,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:05:18,159 INFO L168 Benchmark]: Boogie Preprocessor took 13.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:05:18,159 INFO L168 Benchmark]: RCFGBuilder took 174.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 19:05:18,160 INFO L168 Benchmark]: TraceAbstraction took 1151.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 961.8 MB in the end (delta: 123.9 MB). Peak memory consumption was 123.9 MB. Max. memory is 11.5 GB. [2019-12-07 19:05:18,160 INFO L168 Benchmark]: Witness Printer took 43.62 ms. Allocated memory is still 1.1 GB. Free memory was 961.8 MB in the beginning and 956.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:05:18,162 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -162.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 174.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1151.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 961.8 MB in the end (delta: 123.9 MB). Peak memory consumption was 123.9 MB. Max. memory is 11.5 GB. * Witness Printer took 43.62 ms. Allocated memory is still 1.1 GB. Free memory was 961.8 MB in the beginning and 956.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 14]: Loop Invariant Derived loop invariant: (a + b < 3 * n + 1 && a + b <= 3 * i) && 3 * i <= a + b - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: !(0 == cond) || ((3 * n < a + b + 1 || 3 * i <= a + b) && (a + b <= 0 || a + b <= 3 * n)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 20 SDslu, 13 SDs, 0 SdLazy, 29 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 63 HoareAnnotationTreeSize, 3 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 996 SizeOfPredicates, 8 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...