java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/loops/count_up_down_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:28:38,880 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:28:38,883 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:28:38,895 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:28:38,896 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:28:38,897 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:28:38,898 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:28:38,900 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:28:38,901 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:28:38,902 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:28:38,903 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:28:38,904 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:28:38,905 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:28:38,906 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:28:38,907 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:28:38,909 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:28:38,910 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:28:38,912 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:28:38,919 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:28:38,921 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:28:38,925 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:28:38,927 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:28:38,933 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:28:38,933 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:28:38,934 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:28:38,935 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:28:38,938 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:28:38,941 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:28:38,942 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:28:38,943 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:28:38,945 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:28:38,946 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 15:28:38,948 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 15:28:38,978 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:28:38,978 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:28:38,980 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:28:38,980 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:28:38,981 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:28:38,981 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:28:38,981 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:28:38,981 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:28:38,981 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:28:38,985 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:28:38,985 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:28:38,985 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:28:38,987 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:28:38,987 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:28:38,987 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:28:38,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:28:38,987 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:28:38,988 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:28:38,990 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:28:38,990 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:28:38,990 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:28:38,991 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:28:38,991 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:28:38,991 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:28:38,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:28:38,992 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:28:38,992 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:28:38,992 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:28:38,992 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:28:38,992 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:28:38,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:28:38,993 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:28:38,993 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:28:38,993 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:28:39,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:28:39,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:28:39,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:28:39,086 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:28:39,086 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:28:39,087 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/count_up_down_true-unreach-call_true-termination.i [2018-10-27 15:28:39,154 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ed06de940/d93020703c3448cdab48bed8a35ae4c2/FLAG845b2ed34 [2018-10-27 15:28:39,644 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:28:39,644 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down_true-unreach-call_true-termination.i [2018-10-27 15:28:39,651 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ed06de940/d93020703c3448cdab48bed8a35ae4c2/FLAG845b2ed34 [2018-10-27 15:28:39,673 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ed06de940/d93020703c3448cdab48bed8a35ae4c2 [2018-10-27 15:28:39,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:28:39,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:28:39,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:28:39,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:28:39,694 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:28:39,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c54db9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39, skipping insertion in model container [2018-10-27 15:28:39,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:28:39,731 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:28:39,903 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:28:39,906 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:28:39,923 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:28:39,939 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:28:39,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39 WrapperNode [2018-10-27 15:28:39,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:28:39,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:28:39,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:28:39,941 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:28:39,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:28:39,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:28:39,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:28:39,965 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:28:39,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... [2018-10-27 15:28:39,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:28:39,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:28:39,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:28:39,989 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:28:39,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 15:28:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:28:40,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:28:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:28:40,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:28:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:28:40,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:28:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 15:28:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 15:28:40,340 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:28:40,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:28:40 BoogieIcfgContainer [2018-10-27 15:28:40,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:28:40,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:28:40,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:28:40,345 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:28:40,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:28:39" (1/3) ... [2018-10-27 15:28:40,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f029d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:28:40, skipping insertion in model container [2018-10-27 15:28:40,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:28:39" (2/3) ... [2018-10-27 15:28:40,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f029d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:28:40, skipping insertion in model container [2018-10-27 15:28:40,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:28:40" (3/3) ... [2018-10-27 15:28:40,349 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down_true-unreach-call_true-termination.i [2018-10-27 15:28:40,359 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:28:40,368 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:28:40,382 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:28:40,417 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:28:40,417 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:28:40,417 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:28:40,418 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:28:40,418 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:28:40,418 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:28:40,418 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:28:40,418 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:28:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-27 15:28:40,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 15:28:40,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:28:40,443 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:28:40,446 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:28:40,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:40,452 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-10-27 15:28:40,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:28:40,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:40,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:40,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:40,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:28:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:40,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:28:40,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 15:28:40,566 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:28:40,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 15:28:40,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 15:28:40,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 15:28:40,586 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-27 15:28:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:28:40,609 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-10-27 15:28:40,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 15:28:40,611 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-27 15:28:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:28:40,620 INFO L225 Difference]: With dead ends: 29 [2018-10-27 15:28:40,620 INFO L226 Difference]: Without dead ends: 12 [2018-10-27 15:28:40,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 15:28:40,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-27 15:28:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-27 15:28:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-27 15:28:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-27 15:28:40,664 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-27 15:28:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:28:40,665 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-27 15:28:40,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 15:28:40,665 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-27 15:28:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 15:28:40,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:28:40,666 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:28:40,666 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:28:40,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:40,667 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-10-27 15:28:40,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:28:40,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:40,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:40,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:40,669 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:28:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:40,886 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 15:28:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:41,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:28:41,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:28:41,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:28:41,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:28:41,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:28:41,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:28:41,028 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-10-27 15:28:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:28:41,160 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-27 15:28:41,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 15:28:41,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-10-27 15:28:41,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:28:41,161 INFO L225 Difference]: With dead ends: 19 [2018-10-27 15:28:41,161 INFO L226 Difference]: Without dead ends: 14 [2018-10-27 15:28:41,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:28:41,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-27 15:28:41,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-27 15:28:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-27 15:28:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-27 15:28:41,168 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-27 15:28:41,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:28:41,169 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-27 15:28:41,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:28:41,169 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-27 15:28:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-27 15:28:41,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:28:41,170 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:28:41,170 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:28:41,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:41,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-10-27 15:28:41,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:28:41,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:41,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:41,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:28:41,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:28:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:41,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:28:41,668 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:28:41,669 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-10-27 15:28:41,671 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-10-27 15:28:41,705 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:28:41,705 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:28:41,805 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:28:41,901 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:28:41,903 INFO L272 AbstractInterpreter]: Visited 12 different actions 54 times. Merged at 3 different actions 18 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-10-27 15:28:41,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:28:41,921 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:28:41,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:28:41,921 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:28:41,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:28:41,940 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:28:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:28:41,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:28:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:42,203 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:28:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:28:42,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:28:42,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2018-10-27 15:28:42,548 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:28:42,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 15:28:42,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 15:28:42,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-10-27 15:28:42,550 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 9 states. [2018-10-27 15:28:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:28:42,812 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-10-27 15:28:42,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 15:28:42,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2018-10-27 15:28:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:28:42,814 INFO L225 Difference]: With dead ends: 17 [2018-10-27 15:28:42,814 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 15:28:42,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-10-27 15:28:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 15:28:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 15:28:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 15:28:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 15:28:42,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-10-27 15:28:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:28:42,816 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 15:28:42,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 15:28:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 15:28:42,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 15:28:42,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 15:28:43,264 WARN L179 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-10-27 15:28:43,318 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 15:28:43,318 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 15:28:43,318 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 15:28:43,319 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 15:28:43,319 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 15:28:43,319 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 15:28:43,319 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2018-10-27 15:28:43,319 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2018-10-27 15:28:43,319 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-10-27 15:28:43,319 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2018-10-27 15:28:43,320 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (or (and (<= 0 main_~y~0) (= main_~x~0 main_~n~0) (<= main_~y~0 0)) (let ((.cse0 (+ main_~x~0 main_~y~0))) (and (<= main_~n~0 .cse0) (<= 1 main_~y~0) (<= main_~n~0 (+ (* 4294967296 (div (+ main_~n~0 (- main_~y~0)) 4294967296)) 4294967295)) (<= .cse0 main_~n~0)))) [2018-10-27 15:28:43,320 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 19) the Hoare annotation is: (let ((.cse1 (* 4294967296 (div (+ main_~n~0 (- main_~y~0)) 4294967296)))) (let ((.cse2 (<= main_~n~0 (+ .cse1 main_~y~0)))) (or (let ((.cse0 (+ main_~x~0 main_~y~0))) (and (<= main_~n~0 .cse0) (<= 1 main_~y~0) (<= main_~n~0 (+ .cse1 4294967295)) .cse2 (<= .cse0 main_~n~0))) (and (<= 0 main_~y~0) .cse2 (= main_~x~0 main_~n~0) (<= main_~y~0 0))))) [2018-10-27 15:28:43,320 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-27 15:28:43,321 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-27 15:28:43,321 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-27 15:28:43,321 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-27 15:28:43,321 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-27 15:28:43,321 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-27 15:28:43,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:28:43 BoogieIcfgContainer [2018-10-27 15:28:43,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 15:28:43,335 INFO L168 Benchmark]: Toolchain (without parser) took 3647.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -677.9 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2018-10-27 15:28:43,337 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-27 15:28:43,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.52 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. [2018-10-27 15:28:43,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.09 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. [2018-10-27 15:28:43,339 INFO L168 Benchmark]: Boogie Preprocessor took 23.85 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. [2018-10-27 15:28:43,340 INFO L168 Benchmark]: RCFGBuilder took 352.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-27 15:28:43,341 INFO L168 Benchmark]: TraceAbstraction took 2993.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.5 MB). Peak memory consumption was 119.5 MB. Max. memory is 7.1 GB. [2018-10-27 15:28:43,346 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 250.52 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 23.09 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 23.85 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 352.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2993.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.5 MB). Peak memory consumption was 119.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: ((0 <= y && x == n) && y <= 0) || (((n <= x + y && 1 <= y) && n <= 4294967296 * ((n + -y) / 4294967296) + 4294967295) && x + y <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 35 SDtfs, 6 SDslu, 75 SDs, 0 SdLazy, 44 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s 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, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 103 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 3821 SizeOfPredicates, 3 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...