java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/half_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 23:41:57,411 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 23:41:57,414 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 23:41:57,426 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 23:41:57,427 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 23:41:57,428 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 23:41:57,429 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 23:41:57,431 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 23:41:57,433 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 23:41:57,433 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 23:41:57,434 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 23:41:57,435 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 23:41:57,436 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 23:41:57,437 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 23:41:57,438 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 23:41:57,439 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 23:41:57,440 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 23:41:57,441 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 23:41:57,443 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 23:41:57,445 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 23:41:57,446 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 23:41:57,447 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 23:41:57,450 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 23:41:57,450 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 23:41:57,450 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 23:41:57,451 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 23:41:57,452 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 23:41:57,453 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 23:41:57,454 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 23:41:57,455 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 23:41:57,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 23:41:57,456 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 23:41:57,458 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-23 23:41:57,483 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 23:41:57,483 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 23:41:57,484 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 23:41:57,484 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-23 23:41:57,485 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-23 23:41:57,485 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-23 23:41:57,485 INFO L133 SettingsManager]: * Use SBE=true [2018-07-23 23:41:57,486 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 23:41:57,486 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 23:41:57,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 23:41:57,486 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 23:41:57,487 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 23:41:57,487 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 23:41:57,487 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 23:41:57,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 23:41:57,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 23:41:57,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 23:41:57,488 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 23:41:57,488 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 23:41:57,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 23:41:57,488 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 23:41:57,488 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 23:41:57,489 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 23:41:57,489 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-23 23:41:57,489 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 23:41:57,489 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 23:41:57,489 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 23:41:57,490 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 23:41:57,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 23:41:57,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 23:41:57,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 23:41:57,556 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 23:41:57,557 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 23:41:57,558 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half_true-unreach-call_true-termination.i [2018-07-23 23:41:57,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a09fe16/de02acfd98054a798445d961c5c9f02e/FLAG86ec239cf [2018-07-23 23:41:58,063 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 23:41:58,064 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half_true-unreach-call_true-termination.i [2018-07-23 23:41:58,070 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a09fe16/de02acfd98054a798445d961c5c9f02e/FLAG86ec239cf [2018-07-23 23:41:58,086 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a09fe16/de02acfd98054a798445d961c5c9f02e [2018-07-23 23:41:58,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 23:41:58,100 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 23:41:58,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 23:41:58,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 23:41:58,110 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 23:41:58,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eba4ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58, skipping insertion in model container [2018-07-23 23:41:58,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,328 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 23:41:58,369 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:41:58,385 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 23:41:58,390 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:41:58,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58 WrapperNode [2018-07-23 23:41:58,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 23:41:58,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 23:41:58,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 23:41:58,405 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 23:41:58,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 23:41:58,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 23:41:58,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 23:41:58,443 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 23:41:58,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... [2018-07-23 23:41:58,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 23:41:58,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 23:41:58,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 23:41:58,469 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 23:41:58,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 23:41:58,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 23:41:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 23:41:58,859 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 23:41:58,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:41:58 BoogieIcfgContainer [2018-07-23 23:41:58,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 23:41:58,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 23:41:58,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 23:41:58,864 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 23:41:58,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 11:41:58" (1/3) ... [2018-07-23 23:41:58,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402012c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:41:58, skipping insertion in model container [2018-07-23 23:41:58,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:41:58" (2/3) ... [2018-07-23 23:41:58,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402012c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:41:58, skipping insertion in model container [2018-07-23 23:41:58,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:41:58" (3/3) ... [2018-07-23 23:41:58,868 INFO L112 eAbstractionObserver]: Analyzing ICFG half_true-unreach-call_true-termination.i [2018-07-23 23:41:58,884 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 23:41:58,909 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 23:41:59,017 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 23:41:59,018 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 23:41:59,018 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 23:41:59,023 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 23:41:59,024 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 23:41:59,024 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 23:41:59,024 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 23:41:59,024 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 23:41:59,024 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 23:41:59,042 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-07-23 23:41:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-07-23 23:41:59,049 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:41:59,050 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:41:59,050 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:41:59,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1807304968, now seen corresponding path program 1 times [2018-07-23 23:41:59,058 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:41:59,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:41:59,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:41:59,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:41:59,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:41:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:41:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:41:59,164 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:41:59,164 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 23:41:59,169 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-23 23:41:59,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-23 23:41:59,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-23 23:41:59,187 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2018-07-23 23:41:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:41:59,203 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2018-07-23 23:41:59,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-23 23:41:59,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2018-07-23 23:41:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:41:59,214 INFO L225 Difference]: With dead ends: 23 [2018-07-23 23:41:59,215 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 23:41:59,218 INFO L573 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 [2018-07-23 23:41:59,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 23:41:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 23:41:59,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 23:41:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-07-23 23:41:59,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2018-07-23 23:41:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:41:59,256 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-07-23 23:41:59,256 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-23 23:41:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-07-23 23:41:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 23:41:59,257 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:41:59,257 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:41:59,257 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:41:59,257 INFO L82 PathProgramCache]: Analyzing trace with hash 178559670, now seen corresponding path program 1 times [2018-07-23 23:41:59,258 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:41:59,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:41:59,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:41:59,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:41:59,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:41:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:41:59,450 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-07-23 23:41:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:41:59,673 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:41:59,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 23:41:59,675 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 23:41:59,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 23:41:59,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:41:59,676 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-07-23 23:41:59,939 WARN L169 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-23 23:42:00,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:42:00,096 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-07-23 23:42:00,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 23:42:00,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-07-23 23:42:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:42:00,100 INFO L225 Difference]: With dead ends: 27 [2018-07-23 23:42:00,100 INFO L226 Difference]: Without dead ends: 23 [2018-07-23 23:42:00,101 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-23 23:42:00,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-07-23 23:42:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2018-07-23 23:42:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-23 23:42:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-07-23 23:42:00,107 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2018-07-23 23:42:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:42:00,107 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-07-23 23:42:00,108 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 23:42:00,108 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-07-23 23:42:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-23 23:42:00,108 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:42:00,109 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:42:00,109 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:42:00,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1203127347, now seen corresponding path program 1 times [2018-07-23 23:42:00,109 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:42:00,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:42:00,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:00,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:42:00,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:42:00,489 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-07-23 23:42:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:42:00,493 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:42:00,493 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-23 23:42:00,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:42:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:42:00,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:42:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:42:00,732 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:42:00,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-07-23 23:42:00,733 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 23:42:00,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 23:42:00,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 23:42:00,734 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 11 states. [2018-07-23 23:42:01,126 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-23 23:42:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:42:01,232 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-07-23 23:42:01,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 23:42:01,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-07-23 23:42:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:42:01,234 INFO L225 Difference]: With dead ends: 28 [2018-07-23 23:42:01,234 INFO L226 Difference]: Without dead ends: 20 [2018-07-23 23:42:01,235 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-07-23 23:42:01,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-07-23 23:42:01,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2018-07-23 23:42:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-07-23 23:42:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-07-23 23:42:01,241 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2018-07-23 23:42:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:42:01,241 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-07-23 23:42:01,241 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 23:42:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-07-23 23:42:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 23:42:01,242 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:42:01,243 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:42:01,243 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:42:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash -574981788, now seen corresponding path program 2 times [2018-07-23 23:42:01,243 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:42:01,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:42:01,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:01,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:42:01,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:42:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:42:01,333 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:42:01,333 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:42:01,345 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 23:42:01,357 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 23:42:01,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:42:01,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:42:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:42:01,459 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:42:01,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-07-23 23:42:01,460 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:42:01,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:42:01,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:42:01,461 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-07-23 23:42:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:42:01,535 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-07-23 23:42:01,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:42:01,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-07-23 23:42:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:42:01,538 INFO L225 Difference]: With dead ends: 27 [2018-07-23 23:42:01,538 INFO L226 Difference]: Without dead ends: 19 [2018-07-23 23:42:01,538 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:42:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-07-23 23:42:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-07-23 23:42:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-07-23 23:42:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-07-23 23:42:01,543 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2018-07-23 23:42:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:42:01,543 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-07-23 23:42:01,543 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:42:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-07-23 23:42:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 23:42:01,544 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:42:01,544 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:42:01,544 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:42:01,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1200025574, now seen corresponding path program 1 times [2018-07-23 23:42:01,545 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:42:01,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:42:01,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:01,546 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:42:01,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:42:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:42:01,811 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:42:01,812 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:42:01,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:42:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:42:01,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:42:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:42:02,340 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:42:02,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-07-23 23:42:02,340 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-23 23:42:02,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-23 23:42:02,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-07-23 23:42:02,342 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 16 states. [2018-07-23 23:42:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:42:02,789 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-07-23 23:42:02,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 23:42:02,790 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-07-23 23:42:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:42:02,792 INFO L225 Difference]: With dead ends: 42 [2018-07-23 23:42:02,792 INFO L226 Difference]: Without dead ends: 30 [2018-07-23 23:42:02,793 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2018-07-23 23:42:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-07-23 23:42:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-07-23 23:42:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-07-23 23:42:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-07-23 23:42:02,799 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2018-07-23 23:42:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:42:02,799 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-07-23 23:42:02,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-23 23:42:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-07-23 23:42:02,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-23 23:42:02,800 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:42:02,800 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:42:02,801 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:42:02,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1639145836, now seen corresponding path program 2 times [2018-07-23 23:42:02,801 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:42:02,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:42:02,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:02,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:42:02,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:42:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:42:02,920 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:42:02,920 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:42:02,928 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-23 23:42:02,943 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-23 23:42:02,943 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:42:02,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:42:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:42:02,982 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:42:02,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-07-23 23:42:02,983 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 23:42:02,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 23:42:02,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:42:02,983 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2018-07-23 23:42:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:42:03,149 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-07-23 23:42:03,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 23:42:03,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-07-23 23:42:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:42:03,152 INFO L225 Difference]: With dead ends: 39 [2018-07-23 23:42:03,152 INFO L226 Difference]: Without dead ends: 31 [2018-07-23 23:42:03,153 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:42:03,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-23 23:42:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2018-07-23 23:42:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-07-23 23:42:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-07-23 23:42:03,158 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2018-07-23 23:42:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:42:03,159 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-07-23 23:42:03,159 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 23:42:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-07-23 23:42:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-23 23:42:03,160 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:42:03,160 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:42:03,160 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:42:03,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1741027795, now seen corresponding path program 3 times [2018-07-23 23:42:03,161 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:42:03,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:42:03,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:03,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:42:03,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:42:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-23 23:42:03,414 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:42:03,414 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:42:03,425 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-07-23 23:42:03,433 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-07-23 23:42:03,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:42:03,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:42:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-23 23:42:03,676 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 23:42:03,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-07-23 23:42:03,676 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 23:42:03,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 23:42:03,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-07-23 23:42:03,677 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2018-07-23 23:42:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:42:04,095 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-07-23 23:42:04,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 23:42:04,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-07-23 23:42:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:42:04,097 INFO L225 Difference]: With dead ends: 46 [2018-07-23 23:42:04,098 INFO L226 Difference]: Without dead ends: 34 [2018-07-23 23:42:04,099 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-07-23 23:42:04,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-07-23 23:42:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-07-23 23:42:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-07-23 23:42:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-07-23 23:42:04,105 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 28 [2018-07-23 23:42:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:42:04,105 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-07-23 23:42:04,105 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 23:42:04,105 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-07-23 23:42:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-07-23 23:42:04,106 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:42:04,106 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:42:04,107 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:42:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash -947189178, now seen corresponding path program 4 times [2018-07-23 23:42:04,107 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:42:04,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:42:04,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:04,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-23 23:42:04,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:42:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:42:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-23 23:42:04,433 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:42:04,433 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:42:04,442 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-07-23 23:42:04,460 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-07-23 23:42:04,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-23 23:42:04,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:42:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:42:04,905 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-23 23:42:04,906 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 24 [2018-07-23 23:42:04,906 INFO L450 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-07-23 23:42:04,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-07-23 23:42:04,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2018-07-23 23:42:04,908 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 24 states. [2018-07-23 23:42:06,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:42:06,175 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2018-07-23 23:42:06,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-07-23 23:42:06,175 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 32 [2018-07-23 23:42:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:42:06,176 INFO L225 Difference]: With dead ends: 44 [2018-07-23 23:42:06,176 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 23:42:06,179 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=232, Invalid=1660, Unknown=0, NotChecked=0, Total=1892 [2018-07-23 23:42:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 23:42:06,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 23:42:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 23:42:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 23:42:06,180 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-07-23 23:42:06,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:42:06,180 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 23:42:06,180 INFO L472 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-07-23 23:42:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 23:42:06,180 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 23:42:06,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 23:42:06,285 INFO L421 ceAbstractionStarter]: For program point L15''''(lines 15 19) no Hoare annotation was computed. [2018-07-23 23:42:06,285 INFO L424 ceAbstractionStarter]: At program point L21(lines 10 22) the Hoare annotation is: true [2018-07-23 23:42:06,285 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-07-23 23:42:06,286 INFO L421 ceAbstractionStarter]: For program point L15''(lines 15 19) no Hoare annotation was computed. [2018-07-23 23:42:06,286 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-23 23:42:06,286 INFO L421 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-07-23 23:42:06,286 INFO L421 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-07-23 23:42:06,286 INFO L424 ceAbstractionStarter]: At program point L4''(lines 3 8) the Hoare annotation is: true [2018-07-23 23:42:06,286 INFO L417 ceAbstractionStarter]: At program point L15'''(lines 15 19) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and (<= .cse0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 .cse0) .cse1) (let ((.cse2 (+ ULTIMATE.start_main_~i~0 1))) (and (<= .cse0 .cse2) (<= .cse2 .cse0) .cse1)) (and (<= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~i~0 0)))) [2018-07-23 23:42:06,287 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startErr0AssertViolationERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-07-23 23:42:06,287 INFO L421 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-07-23 23:42:06,287 INFO L421 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2018-07-23 23:42:06,287 INFO L421 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-07-23 23:42:06,287 INFO L421 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2018-07-23 23:42:06,287 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-23 23:42:06,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 11:42:06 BoogieIcfgContainer [2018-07-23 23:42:06,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 23:42:06,304 INFO L168 Benchmark]: Toolchain (without parser) took 8204.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -257.3 MB). Peak memory consumption was 489.2 MB. Max. memory is 7.1 GB. [2018-07-23 23:42:06,305 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. [2018-07-23 23:42:06,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.09 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. [2018-07-23 23:42:06,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.16 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. [2018-07-23 23:42:06,307 INFO L168 Benchmark]: Boogie Preprocessor took 25.58 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. [2018-07-23 23:42:06,308 INFO L168 Benchmark]: RCFGBuilder took 391.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-07-23 23:42:06,310 INFO L168 Benchmark]: TraceAbstraction took 7442.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 521.1 MB). Peak memory consumption was 521.1 MB. Max. memory is 7.1 GB. [2018-07-23 23:42:06,316 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 303.09 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 37.16 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 25.58 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 391.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7442.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 521.1 MB). Peak memory consumption was 521.1 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((2 * n <= i && i <= 2 * n) && n <= k) || ((2 * n <= i + 1 && i + 1 <= 2 * n) && n <= k)) || ((n <= 0 && 0 <= n) && i == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. SAFE Result, 7.2s OverallTime, 8 OverallIterations, 7 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 79 SDtfs, 90 SDslu, 314 SDs, 0 SdLazy, 775 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 112 SyntacticMatches, 14 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=7, 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, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 248 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 271 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 43887 SizeOfPredicates, 15 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 106/344 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half_true-unreach-call_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_23-42-06-341.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half_true-unreach-call_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_23-42-06-341.csv Received shutdown request...