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.epf -i ../../../trunk/examples/svcomp/loops/n.c40_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b6335f6 [2018-10-23 09:52:36,144 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 09:52:36,146 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 09:52:36,159 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 09:52:36,160 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 09:52:36,161 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 09:52:36,162 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 09:52:36,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 09:52:36,166 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 09:52:36,167 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 09:52:36,168 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 09:52:36,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 09:52:36,169 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 09:52:36,170 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 09:52:36,171 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 09:52:36,172 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 09:52:36,173 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 09:52:36,175 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 09:52:36,180 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 09:52:36,182 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 09:52:36,183 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 09:52:36,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 09:52:36,194 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 09:52:36,203 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 09:52:36,227 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 09:52:36,228 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 09:52:36,229 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 09:52:36,229 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 09:52:36,229 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 09:52:36,229 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 09:52:36,230 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 09:52:36,230 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 09:52:36,230 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 09:52:36,231 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 09:52:36,231 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 09:52:36,231 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 09:52:36,232 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 09:52:36,232 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 09:52:36,232 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 09:52:36,233 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 09:52:36,234 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 09:52:36,234 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 09:52:36,234 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 09:52:36,234 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 09:52:36,235 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 09:52:36,235 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 09:52:36,235 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 09:52:36,235 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 09:52:36,236 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 09:52:36,236 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 09:52:36,236 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 09:52:36,237 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 09:52:36,237 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 09:52:36,237 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 09:52:36,237 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 09:52:36,237 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 09:52:36,238 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 09:52:36,238 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 09:52:36,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 09:52:36,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 09:52:36,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 09:52:36,336 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 09:52:36,336 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 09:52:36,337 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/n.c40_true-unreach-call_true-termination.i [2018-10-23 09:52:36,403 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a33258e7/8ac73ee384174affa1e81ad5e7ada8d4/FLAG18fd01ae3 [2018-10-23 09:52:36,890 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 09:52:36,891 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40_true-unreach-call_true-termination.i [2018-10-23 09:52:36,898 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a33258e7/8ac73ee384174affa1e81ad5e7ada8d4/FLAG18fd01ae3 [2018-10-23 09:52:36,910 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a33258e7/8ac73ee384174affa1e81ad5e7ada8d4 [2018-10-23 09:52:36,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 09:52:36,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 09:52:36,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 09:52:36,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 09:52:36,927 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 09:52:36,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:52:36" (1/1) ... [2018-10-23 09:52:36,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7917ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:36, skipping insertion in model container [2018-10-23 09:52:36,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:52:36" (1/1) ... [2018-10-23 09:52:36,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 09:52:36,967 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 09:52:37,155 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:52:37,205 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 09:52:37,233 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 09:52:37,291 INFO L193 MainTranslator]: Completed translation [2018-10-23 09:52:37,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37 WrapperNode [2018-10-23 09:52:37,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 09:52:37,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 09:52:37,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 09:52:37,294 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 09:52:37,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (1/1) ... [2018-10-23 09:52:37,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (1/1) ... [2018-10-23 09:52:37,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 09:52:37,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 09:52:37,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 09:52:37,444 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 09:52:37,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (1/1) ... [2018-10-23 09:52:37,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (1/1) ... [2018-10-23 09:52:37,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (1/1) ... [2018-10-23 09:52:37,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (1/1) ... [2018-10-23 09:52:37,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (1/1) ... [2018-10-23 09:52:37,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (1/1) ... [2018-10-23 09:52:37,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (1/1) ... [2018-10-23 09:52:37,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 09:52:37,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 09:52:37,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 09:52:37,565 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 09:52:37,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (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 [2018-10-23 09:52:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 09:52:37,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 09:52:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 09:52:37,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 09:52:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 09:52:37,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 09:52:42,824 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 09:52:42,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:52:42 BoogieIcfgContainer [2018-10-23 09:52:42,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 09:52:42,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 09:52:42,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 09:52:42,831 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 09:52:42,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:52:36" (1/3) ... [2018-10-23 09:52:42,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e673c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:52:42, skipping insertion in model container [2018-10-23 09:52:42,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:52:37" (2/3) ... [2018-10-23 09:52:42,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e673c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:52:42, skipping insertion in model container [2018-10-23 09:52:42,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:52:42" (3/3) ... [2018-10-23 09:52:42,836 INFO L112 eAbstractionObserver]: Analyzing ICFG n.c40_true-unreach-call_true-termination.i [2018-10-23 09:52:42,849 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 09:52:42,868 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 09:52:42,915 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 09:52:42,975 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 09:52:42,975 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 09:52:42,975 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 09:52:42,976 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 09:52:42,976 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 09:52:42,976 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 09:52:42,976 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 09:52:42,977 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 09:52:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-23 09:52:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-23 09:52:43,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:52:43,012 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:52:43,014 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:52:43,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:52:43,024 INFO L82 PathProgramCache]: Analyzing trace with hash -692123559, now seen corresponding path program 1 times [2018-10-23 09:52:43,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 09:52:43,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:52:43,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:52:43,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:52:43,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 09:52:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:52:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:52:43,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:52:43,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 09:52:43,416 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 09:52:43,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-23 09:52:43,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-23 09:52:43,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-23 09:52:43,436 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-10-23 09:52:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:52:43,454 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-10-23 09:52:43,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 09:52:43,456 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-23 09:52:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:52:43,466 INFO L225 Difference]: With dead ends: 29 [2018-10-23 09:52:43,467 INFO L226 Difference]: Without dead ends: 14 [2018-10-23 09:52:43,470 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 [2018-10-23 09:52:43,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-23 09:52:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-23 09:52:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-23 09:52:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-23 09:52:43,508 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-23 09:52:43,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:52:43,508 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-23 09:52:43,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-23 09:52:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-23 09:52:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 09:52:43,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:52:43,510 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:52:43,510 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:52:43,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:52:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash 925435379, now seen corresponding path program 1 times [2018-10-23 09:52:43,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 09:52:43,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:52:43,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:52:43,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:52:43,512 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 09:52:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:52:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:52:43,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 09:52:43,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 09:52:43,743 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 09:52:43,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 09:52:43,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 09:52:43,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:52:43,753 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2018-10-23 09:52:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:52:43,872 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-23 09:52:43,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 09:52:43,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-23 09:52:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:52:43,874 INFO L225 Difference]: With dead ends: 22 [2018-10-23 09:52:43,874 INFO L226 Difference]: Without dead ends: 17 [2018-10-23 09:52:43,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 09:52:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-23 09:52:43,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-23 09:52:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-23 09:52:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-23 09:52:43,880 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2018-10-23 09:52:43,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:52:43,880 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-23 09:52:43,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 09:52:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-23 09:52:43,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-23 09:52:43,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 09:52:43,881 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 09:52:43,882 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 09:52:43,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:52:43,882 INFO L82 PathProgramCache]: Analyzing trace with hash -2086497215, now seen corresponding path program 1 times [2018-10-23 09:52:43,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 09:52:43,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:52:43,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:52:43,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 09:52:43,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 09:52:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:52:44,387 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-10-23 09:52:44,562 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 16 [2018-10-23 09:52:44,697 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2018-10-23 09:52:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:52:44,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:52:44,710 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 09:52:44,711 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-10-23 09:52:44,712 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [11], [14], [16], [20], [23], [26], [28], [38], [39], [40] [2018-10-23 09:52:44,781 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 09:52:44,782 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 09:53:02,122 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 09:53:02,124 INFO L272 AbstractInterpreter]: Visited 14 different actions 1268 times. Merged at 8 different actions 1253 times. Widened at 1 different actions 153 times. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-23 09:53:02,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 09:53:02,170 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 09:53:02,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 09:53:02,170 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 [2018-10-23 09:53:02,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 09:53:02,181 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 09:53:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 09:53:02,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 09:53:02,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2018-10-23 09:53:02,618 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-10-23 09:53:02,620 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-23 09:53:02,693 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-23 09:53:02,840 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-23 09:53:02,852 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-23 09:53:02,852 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-23 09:53:02,878 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:53:02,973 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:53:02,973 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:27, output treesize:12 [2018-10-23 09:53:03,164 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2018-10-23 09:53:03,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 27 [2018-10-23 09:53:03,275 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-23 09:53:03,356 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-23 09:53:03,375 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-23 09:53:03,375 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:22 [2018-10-23 09:53:03,820 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-10-23 09:53:03,861 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2018-10-23 09:53:03,890 INFO L682 Elim1Store]: detected equality via solver [2018-10-23 09:53:03,891 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-10-23 09:53:03,892 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-23 09:53:03,929 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:53:03,949 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:53:03,949 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:41, output treesize:4 [2018-10-23 09:53:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:53:03,964 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 09:53:04,142 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2018-10-23 09:53:04,164 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-10-23 09:53:04,164 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-23 09:53:04,175 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-23 09:53:04,193 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-23 09:53:04,193 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:28 [2018-10-23 09:53:04,376 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-10-23 09:53:04,378 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2018-10-23 09:53:04,378 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-23 09:53:04,379 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:53:04,380 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-23 09:53:04,380 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:13, output treesize:3 [2018-10-23 09:53:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 09:53:04,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-23 09:53:04,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 14 [2018-10-23 09:53:04,434 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-23 09:53:04,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 09:53:04,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 09:53:04,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-10-23 09:53:04,436 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2018-10-23 09:53:05,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 09:53:05,550 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-23 09:53:05,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 09:53:05,551 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2018-10-23 09:53:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 09:53:05,552 INFO L225 Difference]: With dead ends: 17 [2018-10-23 09:53:05,552 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 09:53:05,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-10-23 09:53:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 09:53:05,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 09:53:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 09:53:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 09:53:05,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-10-23 09:53:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 09:53:05,554 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 09:53:05,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 09:53:05,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 09:53:05,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 09:53:05,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 09:53:05,767 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-10-23 09:53:05,770 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-23 09:53:05,771 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-23 09:53:05,771 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-23 09:53:05,771 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-23 09:53:05,771 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0) (<= 0 |~#x~0.offset|) (<= |~#x~0.offset| 0) (= 0 (select (select |#memory_int| |~#x~0.base|) |~#x~0.offset|))) [2018-10-23 09:53:05,772 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-23 09:53:05,772 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-23 09:53:05,772 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2018-10-23 09:53:05,772 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 23) no Hoare annotation was computed. [2018-10-23 09:53:05,772 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 20) no Hoare annotation was computed. [2018-10-23 09:53:05,772 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 23) no Hoare annotation was computed. [2018-10-23 09:53:05,773 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 8 23) the Hoare annotation is: (or (< 0 |~#x~0.offset|) (not (= 0 |old(~i~0)|)) (not (= 0 (select (select |old(#memory_int)| |~#x~0.base|) |~#x~0.offset|))) (= |~#y~0.base| |~#x~0.base|) (< |~#x~0.offset| 0) (and (= ~i~0 0) (= 0 (select (select |#memory_int| |~#x~0.base|) |~#x~0.offset|)))) [2018-10-23 09:53:05,773 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-10-23 09:53:05,773 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-10-23 09:53:05,773 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2018-10-23 09:53:05,773 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 15) no Hoare annotation was computed. [2018-10-23 09:53:05,773 INFO L425 ceAbstractionStarter]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2018-10-23 09:53:05,773 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 15) the Hoare annotation is: (or (< 0 |~#x~0.offset|) (not (= 0 |old(~i~0)|)) (not (= 0 (select (select |old(#memory_int)| |~#x~0.base|) |~#x~0.offset|))) (= |~#y~0.base| |~#x~0.base|) (< |~#x~0.offset| 0) (and (= ~i~0 0) (= 0 (select (select |#memory_int| |~#x~0.base|) |~#x~0.offset|)))) [2018-10-23 09:53:05,773 INFO L425 ceAbstractionStarter]: For program point L12-5(lines 12 15) no Hoare annotation was computed. [2018-10-23 09:53:05,780 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-23 09:53:05,781 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-23 09:53:05,788 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-23 09:53:05,788 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-23 09:53:05,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:53:05 BoogieIcfgContainer [2018-10-23 09:53:05,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 09:53:05,792 INFO L168 Benchmark]: Toolchain (without parser) took 28870.36 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.6 GB). Peak memory consumption was 137.1 MB. Max. memory is 7.1 GB. [2018-10-23 09:53:05,793 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. [2018-10-23 09:53:05,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.62 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. [2018-10-23 09:53:05,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 150.20 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. [2018-10-23 09:53:05,795 INFO L168 Benchmark]: Boogie Preprocessor took 120.65 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. [2018-10-23 09:53:05,796 INFO L168 Benchmark]: RCFGBuilder took 5261.31 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 886.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -744.5 MB). Peak memory consumption was 590.5 MB. Max. memory is 7.1 GB. [2018-10-23 09:53:05,797 INFO L168 Benchmark]: TraceAbstraction took 22964.10 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 4.0 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 09:53:05,802 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 369.62 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 150.20 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 Preprocessor took 120.65 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 5261.31 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 886.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -744.5 MB). Peak memory consumption was 590.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22964.10 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 4.0 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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: 12]: Loop Invariant [2018-10-23 09:53:05,812 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-23 09:53:05,812 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-23 09:53:05,813 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-23 09:53:05,813 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((0 < x || !(0 == \old(i))) || !(0 == \old(unknown-#memory_int-unknown)[x][x])) || y == x) || x < 0) || (i == 0 && 0 == unknown-#memory_int-unknown[x][x]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. SAFE Result, 22.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 13 SDslu, 21 SDs, 0 SdLazy, 18 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 93 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 67 ConstructedInterpolants, 5 QuantifiedInterpolants, 6379 SizeOfPredicates, 29 NumberOfNonLiveVariables, 174 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...