java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 20:42:44,249 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 20:42:44,251 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 20:42:44,263 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 20:42:44,263 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 20:42:44,264 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 20:42:44,265 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 20:42:44,267 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 20:42:44,269 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 20:42:44,270 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 20:42:44,271 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 20:42:44,271 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 20:42:44,272 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 20:42:44,273 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 20:42:44,274 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 20:42:44,275 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 20:42:44,276 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 20:42:44,277 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 20:42:44,279 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 20:42:44,281 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 20:42:44,282 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 20:42:44,283 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 20:42:44,286 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 20:42:44,286 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 20:42:44,286 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 20:42:44,289 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 20:42:44,290 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 20:42:44,291 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 20:42:44,292 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 20:42:44,295 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 20:42:44,295 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 20:42:44,296 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 20:42:44,296 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 20:42:44,296 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 20:42:44,297 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 20:42:44,300 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 20:42:44,300 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 20:42:44,333 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 20:42:44,334 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 20:42:44,334 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 20:42:44,335 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 20:42:44,336 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 20:42:44,336 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 20:42:44,336 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 20:42:44,336 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 20:42:44,339 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 20:42:44,339 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 20:42:44,339 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 20:42:44,340 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 20:42:44,340 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 20:42:44,341 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 20:42:44,341 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 20:42:44,341 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 20:42:44,341 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 20:42:44,341 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 20:42:44,342 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 20:42:44,342 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 20:42:44,342 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 20:42:44,342 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 20:42:44,342 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 20:42:44,343 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 20:42:44,343 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 20:42:44,343 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:42:44,343 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 20:42:44,343 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 20:42:44,344 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 20:42:44,345 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 20:42:44,345 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 20:42:44,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 20:42:44,346 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 20:42:44,346 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 20:42:44,346 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 20:42:44,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 20:42:44,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 20:42:44,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 20:42:44,428 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 20:42:44,429 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 20:42:44,430 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-11-12 20:42:44,496 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34b962f79/6a4ca55715a9488db7504c7668af8dfb/FLAG26a01ee30 [2018-11-12 20:42:44,980 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 20:42:44,980 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-11-12 20:42:44,987 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34b962f79/6a4ca55715a9488db7504c7668af8dfb/FLAG26a01ee30 [2018-11-12 20:42:45,001 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34b962f79/6a4ca55715a9488db7504c7668af8dfb [2018-11-12 20:42:45,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 20:42:45,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 20:42:45,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 20:42:45,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 20:42:45,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 20:42:45,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c85c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45, skipping insertion in model container [2018-11-12 20:42:45,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 20:42:45,057 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 20:42:45,244 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:42:45,249 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 20:42:45,271 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:42:45,290 INFO L193 MainTranslator]: Completed translation [2018-11-12 20:42:45,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45 WrapperNode [2018-11-12 20:42:45,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 20:42:45,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 20:42:45,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 20:42:45,292 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 20:42:45,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 20:42:45,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 20:42:45,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 20:42:45,320 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 20:42:45,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... [2018-11-12 20:42:45,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 20:42:45,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 20:42:45,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 20:42:45,341 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 20:42:45,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-12 20:42:45,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 20:42:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 20:42:45,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 20:42:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 20:42:45,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 20:42:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 20:42:45,800 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 20:42:45,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:42:45 BoogieIcfgContainer [2018-11-12 20:42:45,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 20:42:45,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 20:42:45,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 20:42:45,805 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 20:42:45,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:42:45" (1/3) ... [2018-11-12 20:42:45,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6acdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:42:45, skipping insertion in model container [2018-11-12 20:42:45,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:42:45" (2/3) ... [2018-11-12 20:42:45,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6acdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:42:45, skipping insertion in model container [2018-11-12 20:42:45,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:42:45" (3/3) ... [2018-11-12 20:42:45,808 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum_true-unreach-call.i.v+cfa-reducer.c [2018-11-12 20:42:45,818 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 20:42:45,833 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 20:42:45,856 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 20:42:45,928 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 20:42:45,928 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 20:42:45,928 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 20:42:45,928 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 20:42:45,928 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 20:42:45,929 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 20:42:45,929 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 20:42:45,929 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 20:42:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-12 20:42:45,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-12 20:42:45,976 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:42:45,977 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:42:45,980 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:42:45,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:42:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-11-12 20:42:45,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:42:46,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:42:46,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:42:46,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:42:46,042 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:42:46,083 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-12 20:42:46,083 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-12 20:42:46,083 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-12 20:42:46,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:42:46,109 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-12 20:42:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:42:46,159 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-12 20:42:46,161 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:42:46,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:42:46,162 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-12 20:42:46,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:42:46,173 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:42:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:42:46,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:42:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:42:46,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:42:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:42:46,353 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:42:46,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-11-12 20:42:46,353 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:42:46,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 20:42:46,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 20:42:46,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-12 20:42:46,374 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2018-11-12 20:42:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:42:46,504 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-11-12 20:42:46,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 20:42:46,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-12 20:42:46,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:42:46,517 INFO L225 Difference]: With dead ends: 26 [2018-11-12 20:42:46,517 INFO L226 Difference]: Without dead ends: 13 [2018-11-12 20:42:46,520 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-12 20:42:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-12 20:42:46,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-12 20:42:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-12 20:42:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-12 20:42:46,560 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-12 20:42:46,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:42:46,560 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-12 20:42:46,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 20:42:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-12 20:42:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-12 20:42:46,561 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:42:46,561 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:42:46,562 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:42:46,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:42:46,562 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-11-12 20:42:46,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:42:46,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:42:46,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:42:46,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:42:46,564 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:42:46,574 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-12 20:42:46,574 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-12 20:42:46,575 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-12 20:42:46,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:42:46,596 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-12 20:42:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:42:46,631 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-11-12 20:42:46,633 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [17], [19], [22], [23], [27], [28], [29] [2018-11-12 20:42:46,672 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:42:46,673 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:42:47,053 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:42:47,054 INFO L272 AbstractInterpreter]: Visited 12 different actions 34 times. Merged at 4 different actions 21 times. Widened at 1 different actions 3 times. Performed 176 root evaluator evaluations with a maximum evaluation depth of 6. Performed 176 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-11-12 20:42:47,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:42:47,066 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:42:47,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:42:47,067 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-12 20:42:47,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:42:47,077 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:42:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:42:47,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:42:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:42:47,450 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:42:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:42:47,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-12 20:42:47,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-12 20:42:47,734 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:42:47,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 20:42:47,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 20:42:47,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-12 20:42:47,736 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-11-12 20:42:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:42:47,871 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-12 20:42:47,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 20:42:47,871 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2018-11-12 20:42:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:42:47,872 INFO L225 Difference]: With dead ends: 17 [2018-11-12 20:42:47,873 INFO L226 Difference]: Without dead ends: 14 [2018-11-12 20:42:47,874 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 20:42:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-12 20:42:47,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-12 20:42:47,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-12 20:42:47,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-12 20:42:47,879 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-12 20:42:47,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:42:47,879 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-12 20:42:47,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 20:42:47,879 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-12 20:42:47,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-12 20:42:47,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:42:47,880 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:42:47,880 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:42:47,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:42:47,881 INFO L82 PathProgramCache]: Analyzing trace with hash 486647847, now seen corresponding path program 2 times [2018-11-12 20:42:47,881 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:42:47,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:42:47,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:42:47,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:42:47,883 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:42:47,895 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-12 20:42:47,895 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-12 20:42:47,895 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-12 20:42:47,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:42:47,907 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-12 20:42:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:42:47,938 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:42:47,938 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:42:47,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:42:47,938 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-12 20:42:47,950 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 20:42:47,950 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 20:42:47,990 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-12 20:42:47,990 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:42:47,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:42:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:42:48,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:42:48,267 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 [2018-11-12 20:42:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-11-12 20:42:48,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-12 20:42:48,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-12 20:42:48,343 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:42:48,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 20:42:48,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 20:42:48,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2018-11-12 20:42:48,345 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-11-12 20:42:48,812 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2018-11-12 20:42:48,931 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)))) (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 [2018-11-12 20:42:49,108 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 [2018-11-12 20:42:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:42:49,301 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2018-11-12 20:42:49,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 20:42:49,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-11-12 20:42:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:42:49,303 INFO L225 Difference]: With dead ends: 23 [2018-11-12 20:42:49,303 INFO L226 Difference]: Without dead ends: 18 [2018-11-12 20:42:49,304 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=116, Unknown=3, NotChecked=72, Total=240 [2018-11-12 20:42:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-12 20:42:49,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-12 20:42:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-12 20:42:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-12 20:42:49,312 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2018-11-12 20:42:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:42:49,313 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-12 20:42:49,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 20:42:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-12 20:42:49,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-12 20:42:49,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:42:49,314 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:42:49,314 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:42:49,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:42:49,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2089680281, now seen corresponding path program 3 times [2018-11-12 20:42:49,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:42:49,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:42:49,316 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:42:49,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:42:49,316 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:42:49,330 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-12 20:42:49,331 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-12 20:42:49,331 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-12 20:42:49,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:42:49,345 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-12 20:42:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:42:49,373 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:42:49,374 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:42:49,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:42:49,374 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:42:49,382 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-12 20:42:49,383 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-12 20:42:49,446 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-12 20:42:49,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:42:49,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:42:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:42:49,634 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:42:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 6 refuted. 6 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 20:42:49,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-12 20:42:49,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2018-11-12 20:42:49,922 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:42:49,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-12 20:42:49,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-12 20:42:49,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=140, Unknown=2, NotChecked=0, Total=182 [2018-11-12 20:42:49,924 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 14 states. [2018-11-12 20:42:50,322 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)))) (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 [2018-11-12 20:42:50,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:42:50,398 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-11-12 20:42:50,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 20:42:50,398 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2018-11-12 20:42:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:42:50,399 INFO L225 Difference]: With dead ends: 20 [2018-11-12 20:42:50,399 INFO L226 Difference]: Without dead ends: 0 [2018-11-12 20:42:50,400 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=334, Unknown=3, NotChecked=38, Total=462 [2018-11-12 20:42:50,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-12 20:42:50,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-12 20:42:50,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-12 20:42:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-12 20:42:50,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-12 20:42:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:42:50,401 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-12 20:42:50,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-12 20:42:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-12 20:42:50,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-12 20:42:50,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-12 20:42:58,669 WARN L179 SmtUtils]: Spent 8.19 s on a formula simplification. DAG size of input: 58 DAG size of output: 22 [2018-11-12 20:42:58,682 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-12 20:42:58,683 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-12 20:42:58,683 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:42:58,683 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:42:58,683 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-12 20:42:58,683 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-12 20:42:58,683 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-12 20:42:58,684 INFO L421 ceAbstractionStarter]: At program point L33(lines 25 54) the Hoare annotation is: (and (forall ((main_~main__n~0 Int)) (let ((.cse0 (+ main_~main__i~0 1))) (or (= (+ (* 2 main_~main__sum~0) (* 4 main_~main__i~0) 2) (* (+ main_~main__n~0 1) main_~main__n~0)) (< main_~main__n~0 .cse0) (< .cse0 main_~main__n~0)))) (<= 1 main_~main__n~0) (or (<= main_~main__i~0 main_~main__n~0) (= (* 2 main_~main__sum~0) (* (+ main_~main__n~0 1) main_~main__n~0)))) [2018-11-12 20:42:58,684 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 56) the Hoare annotation is: true [2018-11-12 20:42:58,684 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 56) no Hoare annotation was computed. [2018-11-12 20:42:58,684 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 54) no Hoare annotation was computed. [2018-11-12 20:42:58,684 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2018-11-12 20:42:58,685 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 55) no Hoare annotation was computed. [2018-11-12 20:42:58,685 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 56) no Hoare annotation was computed. [2018-11-12 20:42:58,685 INFO L425 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2018-11-12 20:42:58,685 INFO L425 ceAbstractionStarter]: For program point L42(lines 42 51) no Hoare annotation was computed. [2018-11-12 20:42:58,691 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,692 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,692 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,692 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,700 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,700 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,700 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,700 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:42:58 BoogieIcfgContainer [2018-11-12 20:42:58,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 20:42:58,704 INFO L168 Benchmark]: Toolchain (without parser) took 13691.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -521.9 MB). Peak memory consumption was 246.7 MB. Max. memory is 7.1 GB. [2018-11-12 20:42:58,705 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:42:58,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-12 20:42:58,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:42:58,708 INFO L168 Benchmark]: Boogie Preprocessor took 21.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:42:58,708 INFO L168 Benchmark]: RCFGBuilder took 459.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-11-12 20:42:58,709 INFO L168 Benchmark]: TraceAbstraction took 12901.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 287.9 MB). Peak memory consumption was 287.9 MB. Max. memory is 7.1 GB. [2018-11-12 20:42:58,714 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 27.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 459.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12901.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 287.9 MB). Peak memory consumption was 287.9 MB. Max. memory is 7.1 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: 44]: 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: 25]: Loop Invariant [2018-11-12 20:42:58,723 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,723 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,723 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,724 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,724 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,724 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,725 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~main__n~0,QUANTIFIED] [2018-11-12 20:42:58,725 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 :: (2 * main__sum + 4 * main__i + 2 == (main_~main__n~0 + 1) * main_~main__n~0 || main_~main__n~0 < main__i + 1) || main__i + 1 < main_~main__n~0) && 1 <= main__n) && (main__i <= main__n || 2 * main__sum == (main__n + 1) * main__n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. SAFE Result, 12.7s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 8.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 21 SDslu, 112 SDs, 0 SdLazy, 145 SolverSat, 10 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 47 HoareAnnotationTreeSize, 5 FomulaSimplifications, 70 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 211 FormulaSimplificationTreeSizeReductionInter, 8.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 98 ConstructedInterpolants, 8 QuantifiedInterpolants, 6203 SizeOfPredicates, 20 NumberOfNonLiveVariables, 205 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 9/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...