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-acceleration/array_true-unreach-call3_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:51:16,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:51:16,768 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:51:16,781 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:51:16,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:51:16,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:51:16,783 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:51:16,785 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:51:16,786 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:51:16,787 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:51:16,788 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:51:16,788 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:51:16,789 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:51:16,790 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:51:16,791 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:51:16,792 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:51:16,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:51:16,795 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:51:16,797 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:51:16,798 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:51:16,799 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:51:16,801 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:51:16,803 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 11:51:16,812 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 [2018-10-24 11:51:16,826 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:51:16,826 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:51:16,827 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:51:16,827 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:51:16,828 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:51:16,828 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:51:16,828 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:51:16,828 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:51:16,829 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:51:16,829 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:51:16,829 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:51:16,829 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:51:16,829 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:51:16,830 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:51:16,830 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:51:16,830 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:51:16,830 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:51:16,830 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:51:16,831 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:51:16,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:51:16,831 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:51:16,831 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:51:16,832 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:51:16,832 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:51:16,832 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:51:16,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:51:16,832 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:51:16,833 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:51:16,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:51:16,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:51:16,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:51:16,901 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:51:16,902 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:51:16,902 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-10-24 11:51:16,967 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/553763423/6f2cd6a8b19a43f78329227de32d4a0e/FLAGb968cfac2 [2018-10-24 11:51:17,444 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:51:17,445 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-10-24 11:51:17,453 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/553763423/6f2cd6a8b19a43f78329227de32d4a0e/FLAGb968cfac2 [2018-10-24 11:51:17,468 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/553763423/6f2cd6a8b19a43f78329227de32d4a0e [2018-10-24 11:51:17,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:51:17,479 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:51:17,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:51:17,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:51:17,484 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:51:17,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a89a825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17, skipping insertion in model container [2018-10-24 11:51:17,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:51:17,521 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:51:17,733 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:51:17,738 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:51:17,763 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:51:17,787 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:51:17,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17 WrapperNode [2018-10-24 11:51:17,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:51:17,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:51:17,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:51:17,789 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:51:17,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:51:17,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:51:17,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:51:17,832 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:51:17,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (1/1) ... [2018-10-24 11:51:17,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:51:17,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:51:17,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:51:17,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:51:17,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (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 [2018-10-24 11:51:18,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:51:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:51:18,377 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:51:18,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:51:18 BoogieIcfgContainer [2018-10-24 11:51:18,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:51:18,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:51:18,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:51:18,382 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:51:18,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:51:17" (1/3) ... [2018-10-24 11:51:18,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5463bdc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:51:18, skipping insertion in model container [2018-10-24 11:51:18,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:51:17" (2/3) ... [2018-10-24 11:51:18,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5463bdc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:51:18, skipping insertion in model container [2018-10-24 11:51:18,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:51:18" (3/3) ... [2018-10-24 11:51:18,386 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call3_true-termination.i [2018-10-24 11:51:18,396 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:51:18,404 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:51:18,421 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:51:18,454 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:51:18,455 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:51:18,455 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:51:18,455 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:51:18,456 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:51:18,456 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:51:18,456 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:51:18,456 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:51:18,456 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:51:18,469 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-24 11:51:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-24 11:51:18,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:18,477 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:18,479 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:18,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:18,486 INFO L82 PathProgramCache]: Analyzing trace with hash 413769545, now seen corresponding path program 1 times [2018-10-24 11:51:18,488 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:18,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:18,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:18,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:51:18,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:51:18,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:51:18,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 11:51:18,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 11:51:18,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 11:51:18,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:51:18,647 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-24 11:51:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:18,661 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2018-10-24 11:51:18,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 11:51:18,663 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2018-10-24 11:51:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:18,675 INFO L225 Difference]: With dead ends: 31 [2018-10-24 11:51:18,675 INFO L226 Difference]: Without dead ends: 14 [2018-10-24 11:51:18,678 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 [2018-10-24 11:51:18,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-24 11:51:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-24 11:51:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-24 11:51:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-10-24 11:51:18,711 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-10-24 11:51:18,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:18,712 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-10-24 11:51:18,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 11:51:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-10-24 11:51:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-24 11:51:18,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:18,713 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:18,713 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:18,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash 654474297, now seen corresponding path program 1 times [2018-10-24 11:51:18,714 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:18,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:18,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:18,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:51:18,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:51:18,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:51:18,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 11:51:18,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 11:51:18,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 11:51:18,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 11:51:18,779 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2018-10-24 11:51:18,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:18,875 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-10-24 11:51:18,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 11:51:18,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-24 11:51:18,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:18,877 INFO L225 Difference]: With dead ends: 34 [2018-10-24 11:51:18,877 INFO L226 Difference]: Without dead ends: 25 [2018-10-24 11:51:18,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 11:51:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-24 11:51:18,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2018-10-24 11:51:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-24 11:51:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-10-24 11:51:18,884 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2018-10-24 11:51:18,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:18,884 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-10-24 11:51:18,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 11:51:18,885 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-10-24 11:51:18,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 11:51:18,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:18,886 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:18,886 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:18,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:18,887 INFO L82 PathProgramCache]: Analyzing trace with hash -556552261, now seen corresponding path program 1 times [2018-10-24 11:51:18,887 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:18,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:18,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:18,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:51:18,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:51:18,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:18,977 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:51:18,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:51:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:19,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:51:19,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:19,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-10-24 11:51:19,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 11:51:19,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 11:51:19,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 11:51:19,114 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2018-10-24 11:51:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:19,344 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2018-10-24 11:51:19,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 11:51:19,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-24 11:51:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:19,346 INFO L225 Difference]: With dead ends: 48 [2018-10-24 11:51:19,346 INFO L226 Difference]: Without dead ends: 36 [2018-10-24 11:51:19,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 11:51:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-24 11:51:19,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2018-10-24 11:51:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-24 11:51:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-10-24 11:51:19,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-10-24 11:51:19,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:19,352 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-10-24 11:51:19,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 11:51:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-10-24 11:51:19,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 11:51:19,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:19,353 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:19,354 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:19,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:19,354 INFO L82 PathProgramCache]: Analyzing trace with hash -523455239, now seen corresponding path program 2 times [2018-10-24 11:51:19,354 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:19,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:19,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:19,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:51:19,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:51:19,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:19,571 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 [2018-10-24 11:51:19,588 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:51:19,616 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-24 11:51:19,617 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:51:19,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 11:51:19,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:51:19,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2018-10-24 11:51:19,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 11:51:19,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 11:51:19,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:51:19,709 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 7 states. [2018-10-24 11:51:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:19,923 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2018-10-24 11:51:19,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 11:51:19,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-10-24 11:51:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:19,924 INFO L225 Difference]: With dead ends: 57 [2018-10-24 11:51:19,925 INFO L226 Difference]: Without dead ends: 35 [2018-10-24 11:51:19,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-10-24 11:51:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-24 11:51:19,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-10-24 11:51:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-24 11:51:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-10-24 11:51:19,932 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 16 [2018-10-24 11:51:19,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:19,933 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-10-24 11:51:19,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 11:51:19,933 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-10-24 11:51:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-24 11:51:19,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:19,934 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:19,935 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:19,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:19,935 INFO L82 PathProgramCache]: Analyzing trace with hash -475824058, now seen corresponding path program 1 times [2018-10-24 11:51:19,935 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:19,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:19,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:19,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:51:19,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 11:51:20,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:20,108 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:51:20,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:51:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:20,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 11:51:20,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:20,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-10-24 11:51:20,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 11:51:20,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 11:51:20,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:51:20,209 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 7 states. [2018-10-24 11:51:20,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:20,375 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2018-10-24 11:51:20,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 11:51:20,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-10-24 11:51:20,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:20,377 INFO L225 Difference]: With dead ends: 66 [2018-10-24 11:51:20,377 INFO L226 Difference]: Without dead ends: 46 [2018-10-24 11:51:20,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:51:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-24 11:51:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2018-10-24 11:51:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-24 11:51:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-10-24 11:51:20,384 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 31 [2018-10-24 11:51:20,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:20,385 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-10-24 11:51:20,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 11:51:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-10-24 11:51:20,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-24 11:51:20,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:20,386 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:20,386 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:20,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:20,387 INFO L82 PathProgramCache]: Analyzing trace with hash -595004924, now seen corresponding path program 2 times [2018-10-24 11:51:20,387 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:20,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:20,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:20,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:51:20,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 11:51:20,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:20,748 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:51:20,766 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:51:20,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:51:20,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:51:20,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 11:51:20,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:51:20,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-10-24 11:51:20,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 11:51:20,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 11:51:20,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-24 11:51:20,875 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 8 states. [2018-10-24 11:51:21,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:21,005 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2018-10-24 11:51:21,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 11:51:21,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-10-24 11:51:21,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:21,007 INFO L225 Difference]: With dead ends: 81 [2018-10-24 11:51:21,007 INFO L226 Difference]: Without dead ends: 57 [2018-10-24 11:51:21,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-24 11:51:21,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-24 11:51:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2018-10-24 11:51:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-24 11:51:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-10-24 11:51:21,015 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2018-10-24 11:51:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:21,015 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-10-24 11:51:21,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 11:51:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-10-24 11:51:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 11:51:21,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:51:21,017 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:51:21,017 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:51:21,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:51:21,017 INFO L82 PathProgramCache]: Analyzing trace with hash 825769862, now seen corresponding path program 3 times [2018-10-24 11:51:21,018 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:51:21,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:51:21,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:21,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:51:21,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:51:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:51:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 11:51:21,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:51:21,202 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 11:51:21,217 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 11:51:21,262 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-10-24 11:51:21,262 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:51:21,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:51:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-24 11:51:21,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:51:21,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2018-10-24 11:51:21,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 11:51:21,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 11:51:21,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-10-24 11:51:21,446 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2018-10-24 11:51:21,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:51:21,987 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2018-10-24 11:51:21,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 11:51:21,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2018-10-24 11:51:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:51:21,988 INFO L225 Difference]: With dead ends: 98 [2018-10-24 11:51:21,988 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 11:51:21,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2018-10-24 11:51:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 11:51:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 11:51:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 11:51:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 11:51:21,991 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-10-24 11:51:21,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:51:21,992 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 11:51:21,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 11:51:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 11:51:21,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 11:51:21,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 11:51:22,058 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 11:51:22,058 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-10-24 11:51:22,059 INFO L425 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-10-24 11:51:22,059 INFO L421 ceAbstractionStarter]: At program point L17-4(lines 17 21) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1023) [2018-10-24 11:51:22,059 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2018-10-24 11:51:22,059 INFO L425 ceAbstractionStarter]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2018-10-24 11:51:22,059 INFO L425 ceAbstractionStarter]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2018-10-24 11:51:22,060 INFO L428 ceAbstractionStarter]: At program point L13-4(lines 13 15) the Hoare annotation is: true [2018-10-24 11:51:22,060 INFO L425 ceAbstractionStarter]: For program point L9(lines 9 23) no Hoare annotation was computed. [2018-10-24 11:51:22,060 INFO L425 ceAbstractionStarter]: For program point L13-5(lines 13 15) no Hoare annotation was computed. [2018-10-24 11:51:22,060 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-24 11:51:22,060 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-24 11:51:22,060 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-24 11:51:22,060 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 11:51:22,060 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-24 11:51:22,061 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-10-24 11:51:22,061 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-24 11:51:22,061 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-10-24 11:51:22,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:51:22 BoogieIcfgContainer [2018-10-24 11:51:22,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 11:51:22,072 INFO L168 Benchmark]: Toolchain (without parser) took 4594.42 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.8 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -538.5 MB). Peak memory consumption was 169.3 MB. Max. memory is 7.1 GB. [2018-10-24 11:51:22,074 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. [2018-10-24 11:51:22,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.35 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. [2018-10-24 11:51:22,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.47 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. [2018-10-24 11:51:22,076 INFO L168 Benchmark]: Boogie Preprocessor took 36.08 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. [2018-10-24 11:51:22,077 INFO L168 Benchmark]: RCFGBuilder took 509.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -759.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-24 11:51:22,078 INFO L168 Benchmark]: TraceAbstraction took 3693.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 210.2 MB). Peak memory consumption was 210.2 MB. Max. memory is 7.1 GB. [2018-10-24 11:51:22,083 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 308.35 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 42.47 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 36.08 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 509.53 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -759.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3693.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 210.2 MB). Peak memory consumption was 210.2 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: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: i <= 1023 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 77 SDtfs, 180 SDslu, 130 SDs, 0 SdLazy, 219 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, 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, 7 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 20 NumberOfFragments, 5 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 280 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 268 ConstructedInterpolants, 0 QuantifiedInterpolants, 12826 SizeOfPredicates, 9 NumberOfNonLiveVariables, 477 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 155/288 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...