./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 138b427ae0d59b9c3947d32f186331712a870d16 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 11:42:21,428 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:42:21,429 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:42:21,438 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:42:21,438 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:42:21,439 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:42:21,439 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:42:21,440 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:42:21,442 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:42:21,442 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:42:21,443 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:42:21,443 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:42:21,444 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:42:21,444 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:42:21,445 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:42:21,445 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:42:21,446 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:42:21,447 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:42:21,448 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:42:21,449 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:42:21,450 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:42:21,450 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:42:21,452 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:42:21,452 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:42:21,452 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:42:21,452 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:42:21,453 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:42:21,454 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:42:21,454 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:42:21,455 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:42:21,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:42:21,455 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:42:21,455 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:42:21,456 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:42:21,456 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:42:21,457 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:42:21,457 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 11:42:21,466 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:42:21,466 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:42:21,467 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:42:21,467 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 11:42:21,467 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 11:42:21,467 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 11:42:21,467 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 11:42:21,467 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 11:42:21,467 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 11:42:21,468 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 11:42:21,468 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 11:42:21,468 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:42:21,468 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:42:21,468 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:42:21,469 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:42:21,469 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:42:21,469 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:42:21,469 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:42:21,469 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:42:21,469 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:42:21,469 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:42:21,469 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:42:21,470 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:42:21,470 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:42:21,470 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:42:21,470 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:42:21,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:42:21,470 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:42:21,470 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:42:21,470 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:42:21,471 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 11:42:21,471 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:42:21,471 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:42:21,471 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 11:42:21,471 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138b427ae0d59b9c3947d32f186331712a870d16 [2018-11-10 11:42:21,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:42:21,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:42:21,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:42:21,506 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:42:21,506 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:42:21,507 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/../../sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-11-10 11:42:21,552 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/data/7c63c18d1/7549c66f9b2549eb8c5ce1de603b13a7/FLAGa0b0f0826 [2018-11-10 11:42:21,885 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:42:21,886 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/sv-benchmarks/c/loop-new/gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-11-10 11:42:21,892 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/data/7c63c18d1/7549c66f9b2549eb8c5ce1de603b13a7/FLAGa0b0f0826 [2018-11-10 11:42:21,900 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/data/7c63c18d1/7549c66f9b2549eb8c5ce1de603b13a7 [2018-11-10 11:42:21,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:42:21,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 11:42:21,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:42:21,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:42:21,907 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:42:21,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:42:21" (1/1) ... [2018-11-10 11:42:21,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf90f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:21, skipping insertion in model container [2018-11-10 11:42:21,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:42:21" (1/1) ... [2018-11-10 11:42:21,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:42:21,939 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:42:22,043 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:42:22,047 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:42:22,060 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:42:22,070 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:42:22,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22 WrapperNode [2018-11-10 11:42:22,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:42:22,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 11:42:22,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 11:42:22,071 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 11:42:22,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... [2018-11-10 11:42:22,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... [2018-11-10 11:42:22,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 11:42:22,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:42:22,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:42:22,090 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:42:22,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... [2018-11-10 11:42:22,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... [2018-11-10 11:42:22,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... [2018-11-10 11:42:22,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... [2018-11-10 11:42:22,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... [2018-11-10 11:42:22,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... [2018-11-10 11:42:22,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... [2018-11-10 11:42:22,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:42:22,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:42:22,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:42:22,107 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:42:22,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:42:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:42:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:42:22,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:42:22,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:42:22,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:42:22,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:42:22,350 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:42:22,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:42:22 BoogieIcfgContainer [2018-11-10 11:42:22,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:42:22,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:42:22,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:42:22,353 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:42:22,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:42:21" (1/3) ... [2018-11-10 11:42:22,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de24655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:42:22, skipping insertion in model container [2018-11-10 11:42:22,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:42:22" (2/3) ... [2018-11-10 11:42:22,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de24655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:42:22, skipping insertion in model container [2018-11-10 11:42:22,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:42:22" (3/3) ... [2018-11-10 11:42:22,356 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.p+lhb-reducer.c [2018-11-10 11:42:22,363 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:42:22,369 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 11:42:22,379 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 11:42:22,410 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:42:22,410 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:42:22,410 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:42:22,410 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:42:22,410 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:42:22,411 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:42:22,411 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:42:22,411 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:42:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-10 11:42:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 11:42:22,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:42:22,433 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:42:22,434 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:42:22,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:42:22,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1720236422, now seen corresponding path program 1 times [2018-11-10 11:42:22,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:42:22,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:42:22,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:42:22,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:42:22,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:42:22,510 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 11:42:22,510 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 11:42:22,510 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/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 [2018-11-10 11:42:22,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:42:22,524 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 11:42:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:42:22,554 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-10 11:42:22,555 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 11:42:22,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:42:22,555 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:42:22,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:42:22,562 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 11:42:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:42:22,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:42:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:42:22,749 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 11:42:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:42:25,280 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:42:25,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 5] imperfect sequences [] total 12 [2018-11-10 11:42:25,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 11:42:25,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 11:42:25,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 11:42:25,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-10 11:42:25,292 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 9 states. [2018-11-10 11:42:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:42:25,403 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2018-11-10 11:42:25,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 11:42:25,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-11-10 11:42:25,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:42:25,412 INFO L225 Difference]: With dead ends: 41 [2018-11-10 11:42:25,412 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 11:42:25,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-11-10 11:42:25,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 11:42:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 11:42:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 11:42:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-10 11:42:25,441 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-11-10 11:42:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:42:25,442 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-10 11:42:25,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 11:42:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-10 11:42:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 11:42:25,442 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:42:25,442 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:42:25,443 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:42:25,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:42:25,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1787659072, now seen corresponding path program 1 times [2018-11-10 11:42:25,443 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:42:25,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:42:25,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:42:25,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:42:25,444 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:42:25,454 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 11:42:25,454 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 11:42:25,455 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 11:42:25,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:42:25,464 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 11:42:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:42:25,484 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-11-10 11:42:25,485 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [16], [19], [22], [25], [28], [32], [34], [37], [38], [47], [48], [49] [2018-11-10 11:42:25,513 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 11:42:25,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 11:42:25,798 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 11:42:25,800 INFO L272 AbstractInterpreter]: Visited 17 different actions 53 times. Merged at 4 different actions 36 times. Widened at 1 different actions 7 times. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-11-10 11:42:25,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:42:25,810 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 11:42:25,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:42:25,810 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:42:25,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:42:25,818 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 11:42:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:42:25,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:42:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:42:25,965 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 11:42:26,037 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) is different from true [2018-11-10 11:42:26,136 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 2))) (or (= (+ (* 2 c_main_~main__sum~0) (* 6 c_main_~main__i~0) 6) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2018-11-10 11:42:26,149 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 3))) (or (< .cse0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 8 c_main_~main__i~0) 12) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0)))) is different from true [2018-11-10 11:42:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-11-10 11:42:26,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:42:26,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-11-10 11:42:26,171 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 11:42:26,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 11:42:26,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 11:42:26,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=128, Unknown=3, NotChecked=72, Total=240 [2018-11-10 11:42:26,173 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 16 states. [2018-11-10 11:42:26,338 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (= 6 c_main_~main__i~0) (= c_main_~main__sum~0 15) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-10 11:42:28,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:42:28,400 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-10 11:42:28,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 11:42:28,401 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2018-11-10 11:42:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:42:28,401 INFO L225 Difference]: With dead ends: 22 [2018-11-10 11:42:28,401 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 11:42:28,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=252, Unknown=4, NotChecked=140, Total=462 [2018-11-10 11:42:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 11:42:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 11:42:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 11:42:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-10 11:42:28,405 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-11-10 11:42:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:42:28,405 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-10 11:42:28,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 11:42:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-10 11:42:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 11:42:28,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:42:28,406 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:42:28,406 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:42:28,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:42:28,406 INFO L82 PathProgramCache]: Analyzing trace with hash -417206074, now seen corresponding path program 2 times [2018-11-10 11:42:28,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:42:28,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:42:28,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:42:28,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:42:28,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:42:28,416 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 11:42:28,417 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 11:42:28,417 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 11:42:28,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:42:28,427 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 11:42:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:42:28,452 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 11:42:28,452 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 11:42:28,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:42:28,452 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:42:28,458 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 11:42:28,458 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 11:42:28,473 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-10 11:42:28,473 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:42:28,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:42:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:42:28,557 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 11:42:31,384 WARN L854 $PredicateComparison]: unable to prove that (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) is different from true [2018-11-10 11:42:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 11:42:33,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:42:33,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2018-11-10 11:42:33,785 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 11:42:33,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 11:42:33,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 11:42:33,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=180, Unknown=7, NotChecked=28, Total=272 [2018-11-10 11:42:33,785 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 17 states. [2018-11-10 11:42:33,916 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 1))) (or (= (+ (* 2 c_main_~main__sum~0) (* 4 c_main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (= 5 c_main_~main__i~0) (= c_main_~main__sum~0 10) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-10 11:42:34,017 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ c_main_~main__i~0 3))) (or (< .cse0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 8 c_main_~main__i~0) 12) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0)))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-10 11:42:34,083 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((main_~main__n~0 Int)) (or (< c_main_~main__i~0 main_~main__n~0) (= (+ (* 2 c_main_~main__sum~0) (* 2 c_main_~main__i~0)) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 c_main_~main__i~0))) (or (<= c_main_~main__i~0 c_main_~main__n~0) (= (* 2 c_main_~main__sum~0) (* (+ c_main_~main__n~0 1) c_main_~main__n~0)))) is different from true [2018-11-10 11:42:34,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:42:34,085 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-11-10 11:42:34,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 11:42:34,085 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2018-11-10 11:42:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:42:34,085 INFO L225 Difference]: With dead ends: 22 [2018-11-10 11:42:34,085 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 11:42:34,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=108, Invalid=360, Unknown=10, NotChecked=172, Total=650 [2018-11-10 11:42:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 11:42:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 11:42:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 11:42:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 11:42:34,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-11-10 11:42:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:42:34,094 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:42:34,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 11:42:34,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 11:42:34,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 11:42:34,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 11:42:36,212 WARN L179 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2018-11-10 11:42:36,214 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-10 11:42:36,214 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-10 11:42:36,214 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:42:36,214 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 11:42:36,214 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 11:42:36,214 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 11:42:36,214 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 11:42:36,214 INFO L425 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-11-10 11:42:36,214 INFO L425 ceAbstractionStarter]: For program point L62(lines 62 71) no Hoare annotation was computed. [2018-11-10 11:42:36,214 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 101) no Hoare annotation was computed. [2018-11-10 11:42:36,215 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 64) no Hoare annotation was computed. [2018-11-10 11:42:36,215 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 101) no Hoare annotation was computed. [2018-11-10 11:42:36,215 INFO L425 ceAbstractionStarter]: For program point L44(lines 44 78) no Hoare annotation was computed. [2018-11-10 11:42:36,215 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 83) no Hoare annotation was computed. [2018-11-10 11:42:36,215 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 88) no Hoare annotation was computed. [2018-11-10 11:42:36,215 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 93) no Hoare annotation was computed. [2018-11-10 11:42:36,215 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 101) the Hoare annotation is: true [2018-11-10 11:42:36,215 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 98) no Hoare annotation was computed. [2018-11-10 11:42:36,215 INFO L421 ceAbstractionStarter]: At program point L53(lines 45 74) the Hoare annotation is: (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ main_~main__i~0 3))) (or (< .cse0 main_~main__n~0) (= (+ (* 2 main_~main__sum~0) (* 8 main_~main__i~0) 12) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0)))) (or (<= main_~main__i~0 main_~main__n~0) (= (* 2 main_~main__sum~0) (* (+ main_~main__n~0 1) main_~main__n~0)))) [2018-11-10 11:42:36,215 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 99) no Hoare annotation was computed. [2018-11-10 11:42:36,215 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 100) no Hoare annotation was computed. [2018-11-10 11:42:36,218 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,219 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,219 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,219 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,223 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,223 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,223 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,223 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:42:36 BoogieIcfgContainer [2018-11-10 11:42:36,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:42:36,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:42:36,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:42:36,225 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:42:36,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:42:22" (3/4) ... [2018-11-10 11:42:36,227 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 11:42:36,231 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 11:42:36,231 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 11:42:36,234 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-10 11:42:36,234 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 11:42:36,263 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a35e1103-8f71-4155-b67c-d1854e75fb52/bin-2019/utaipan/witness.graphml [2018-11-10 11:42:36,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:42:36,264 INFO L168 Benchmark]: Toolchain (without parser) took 14360.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.2 MB). Free memory was 962.5 MB in the beginning and 1.2 GB in the end (delta: -235.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:42:36,264 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:42:36,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.86 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:42:36,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.65 ms. Allocated memory is still 1.0 GB. Free memory is still 951.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:42:36,265 INFO L168 Benchmark]: Boogie Preprocessor took 16.70 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 11:42:36,265 INFO L168 Benchmark]: RCFGBuilder took 243.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-11-10 11:42:36,266 INFO L168 Benchmark]: TraceAbstraction took 13873.18 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -67.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:42:36,266 INFO L168 Benchmark]: Witness Printer took 38.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:42:36,268 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.86 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 951.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.65 ms. Allocated memory is still 1.0 GB. Free memory is still 951.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.70 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 243.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13873.18 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -67.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. * Witness Printer took 38.81 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 64]: 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: 45]: Loop Invariant [2018-11-10 11:42:36,271 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,272 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,272 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,272 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,272 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,272 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,272 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-10 11:42:36,273 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] Derived loop invariant: (forall main_~main__n~0 : int :: (main__i + 3 < main_~main__n~0 || 2 * main__sum + 8 * main__i + 12 == (main_~main__n~0 + 1) * main_~main__n~0) || main_~main__n~0 < main__i + 3) && (main__i <= main__n || 2 * main__sum == (main__n + 1) * main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. SAFE Result, 13.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 2.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 20 SDslu, 271 SDs, 0 SdLazy, 269 SolverSat, 21 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 9 NumberOfFragments, 44 HoareAnnotationTreeSize, 5 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 95 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 18 QuantifiedInterpolants, 11068 SizeOfPredicates, 18 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...