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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:32:04,759 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:32:04,762 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:32:04,775 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:32:04,776 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:32:04,777 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:32:04,778 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:32:04,780 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:32:04,781 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:32:04,782 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:32:04,783 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:32:04,783 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:32:04,784 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:32:04,785 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:32:04,786 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:32:04,787 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:32:04,788 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:32:04,790 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:32:04,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:32:04,793 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:32:04,794 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:32:04,796 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:32:04,798 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:32:04,807 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 22:32:04,835 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:32:04,835 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:32:04,836 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:32:04,836 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:32:04,840 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:32:04,840 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:32:04,840 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:32:04,841 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:32:04,841 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:32:04,841 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:32:04,841 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:32:04,841 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:32:04,841 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:32:04,842 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:32:04,843 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:32:04,843 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:32:04,843 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:32:04,843 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:32:04,844 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:32:04,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:32:04,844 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:32:04,844 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:32:04,844 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:32:04,845 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:32:04,846 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:32:04,846 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:32:04,846 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:32:04,846 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:32:04,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:32:04,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:32:04,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:32:04,918 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:32:04,919 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:32:04,919 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-10-26 22:32:04,975 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8cf9bf81d/3088975a424144d989f0130922e5abf1/FLAG7ae1e5727 [2018-10-26 22:32:05,407 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:32:05,408 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007_true-unreach-call_true-termination.c.i [2018-10-26 22:32:05,415 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8cf9bf81d/3088975a424144d989f0130922e5abf1/FLAG7ae1e5727 [2018-10-26 22:32:05,435 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8cf9bf81d/3088975a424144d989f0130922e5abf1 [2018-10-26 22:32:05,444 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:32:05,446 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:32:05,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:32:05,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:32:05,452 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:32:05,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618e506f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05, skipping insertion in model container [2018-10-26 22:32:05,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:32:05,485 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:32:05,697 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:32:05,701 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:32:05,720 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:32:05,737 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:32:05,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05 WrapperNode [2018-10-26 22:32:05,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:32:05,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:32:05,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:32:05,739 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:32:05,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:32:05,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:32:05,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:32:05,777 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:32:05,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (1/1) ... [2018-10-26 22:32:05,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:32:05,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:32:05,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:32:05,801 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:32:05,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (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 [2018-10-26 22:32:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:32:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:32:06,189 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:32:06,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:32:06 BoogieIcfgContainer [2018-10-26 22:32:06,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:32:06,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:32:06,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:32:06,195 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:32:06,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:32:05" (1/3) ... [2018-10-26 22:32:06,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ef1bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:32:06, skipping insertion in model container [2018-10-26 22:32:06,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:32:05" (2/3) ... [2018-10-26 22:32:06,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ef1bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:32:06, skipping insertion in model container [2018-10-26 22:32:06,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:32:06" (3/3) ... [2018-10-26 22:32:06,201 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007_true-unreach-call_true-termination.c.i [2018-10-26 22:32:06,217 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:32:06,227 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:32:06,265 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:32:06,305 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:32:06,306 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:32:06,306 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:32:06,306 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:32:06,307 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:32:06,307 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:32:06,307 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:32:06,307 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:32:06,307 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:32:06,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-10-26 22:32:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 22:32:06,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:32:06,347 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:32:06,349 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:32:06,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:32:06,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1807335752, now seen corresponding path program 1 times [2018-10-26 22:32:06,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:32:06,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:32:06,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:06,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:32:06,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:32:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:32:06,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:32:06,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:32:06,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:32:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:32:06,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:32:06,494 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2018-10-26 22:32:06,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:32:06,511 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2018-10-26 22:32:06,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:32:06,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2018-10-26 22:32:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:32:06,523 INFO L225 Difference]: With dead ends: 23 [2018-10-26 22:32:06,523 INFO L226 Difference]: Without dead ends: 11 [2018-10-26 22:32:06,527 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 [2018-10-26 22:32:06,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-26 22:32:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-26 22:32:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-26 22:32:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-26 22:32:06,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2018-10-26 22:32:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:32:06,558 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-26 22:32:06,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:32:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-26 22:32:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-26 22:32:06,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:32:06,559 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:32:06,559 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:32:06,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:32:06,560 INFO L82 PathProgramCache]: Analyzing trace with hash 178590454, now seen corresponding path program 1 times [2018-10-26 22:32:06,560 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:32:06,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:32:06,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:06,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:32:06,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:32:06,768 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-10-26 22:32:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:32:06,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:32:06,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:32:06,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:32:06,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:32:07,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:32:07,000 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-10-26 22:32:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:32:07,197 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2018-10-26 22:32:07,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:32:07,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-10-26 22:32:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:32:07,200 INFO L225 Difference]: With dead ends: 18 [2018-10-26 22:32:07,201 INFO L226 Difference]: Without dead ends: 14 [2018-10-26 22:32:07,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:32:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-26 22:32:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-10-26 22:32:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-26 22:32:07,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-26 22:32:07,206 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2018-10-26 22:32:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:32:07,209 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-26 22:32:07,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:32:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-26 22:32:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 22:32:07,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:32:07,210 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:32:07,211 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:32:07,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:32:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1455846604, now seen corresponding path program 1 times [2018-10-26 22:32:07,211 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:32:07,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:32:07,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:07,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:32:07,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:32:07,546 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-10-26 22:32:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:32:07,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:32:07,777 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2018-10-26 22:32:07,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:32:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:32:07,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:32:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:32:08,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:32:08,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-10-26 22:32:08,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 22:32:08,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 22:32:08,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-10-26 22:32:08,102 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 13 states. [2018-10-26 22:32:08,324 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-26 22:32:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:32:08,836 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-10-26 22:32:08,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 22:32:08,837 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2018-10-26 22:32:08,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:32:08,838 INFO L225 Difference]: With dead ends: 28 [2018-10-26 22:32:08,838 INFO L226 Difference]: Without dead ends: 22 [2018-10-26 22:32:08,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2018-10-26 22:32:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-26 22:32:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-10-26 22:32:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-26 22:32:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-10-26 22:32:08,846 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2018-10-26 22:32:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:32:08,846 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-10-26 22:32:08,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 22:32:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2018-10-26 22:32:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 22:32:08,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:32:08,847 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:32:08,848 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:32:08,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:32:08,848 INFO L82 PathProgramCache]: Analyzing trace with hash 920674596, now seen corresponding path program 1 times [2018-10-26 22:32:08,848 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:32:08,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:32:08,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:08,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:32:08,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:32:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:32:09,127 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-26 22:32:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 22:32:09,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:32:09,179 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:32:09,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:32:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:32:09,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:32:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:32:09,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:32:09,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2018-10-26 22:32:09,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 22:32:09,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 22:32:09,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-10-26 22:32:09,602 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 16 states. [2018-10-26 22:32:10,231 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-26 22:32:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:32:10,437 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2018-10-26 22:32:10,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 22:32:10,438 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-26 22:32:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:32:10,438 INFO L225 Difference]: With dead ends: 31 [2018-10-26 22:32:10,438 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 22:32:10,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2018-10-26 22:32:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 22:32:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 22:32:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 22:32:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 22:32:10,442 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-10-26 22:32:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:32:10,442 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 22:32:10,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-26 22:32:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 22:32:10,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 22:32:10,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 22:32:10,525 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:32:10,525 INFO L428 ceAbstractionStarter]: At program point L25(lines 10 26) the Hoare annotation is: true [2018-10-26 22:32:10,526 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2018-10-26 22:32:10,526 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-26 22:32:10,526 INFO L425 ceAbstractionStarter]: For program point L15-2(lines 15 21) no Hoare annotation was computed. [2018-10-26 22:32:10,526 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-26 22:32:10,526 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-26 22:32:10,526 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-26 22:32:10,526 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 22:32:10,527 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-26 22:32:10,527 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 23) no Hoare annotation was computed. [2018-10-26 22:32:10,527 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 23) the Hoare annotation is: (let ((.cse1 (* 3 ULTIMATE.start_main_~i~0)) (.cse0 (+ ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) (and (< .cse0 (+ (* 3 ULTIMATE.start_main_~n~0) 1)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-10-26 22:32:10,527 INFO L425 ceAbstractionStarter]: For program point L14-4(lines 14 23) no Hoare annotation was computed. [2018-10-26 22:32:10,527 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-26 22:32:10,528 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-10-26 22:32:10,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:32:10 BoogieIcfgContainer [2018-10-26 22:32:10,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:32:10,540 INFO L168 Benchmark]: Toolchain (without parser) took 5095.43 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -506.4 MB). Peak memory consumption was 212.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:32:10,542 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-26 22:32:10,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.64 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. [2018-10-26 22:32:10,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.67 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. [2018-10-26 22:32:10,544 INFO L168 Benchmark]: Boogie Preprocessor took 23.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:32:10,544 INFO L168 Benchmark]: RCFGBuilder took 388.95 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -758.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:32:10,546 INFO L168 Benchmark]: TraceAbstraction took 4348.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 241.2 MB). Peak memory consumption was 241.2 MB. Max. memory is 7.1 GB. [2018-10-26 22:32:10,551 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.64 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 37.67 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 23.79 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 388.95 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -758.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4348.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 241.2 MB). Peak memory consumption was 241.2 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: 14]: Loop Invariant Derived loop invariant: (a + b < 3 * n + 1 && a + b <= 3 * i) && 3 * i <= a + b - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 38 SDslu, 94 SDs, 0 SdLazy, 272 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 26 HoareAnnotationTreeSize, 3 FomulaSimplifications, 75 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 101 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 9042 SizeOfPredicates, 12 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 2/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...