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/eca-rers2012/Problem12_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:08:18,606 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:08:18,610 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:08:18,623 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:08:18,623 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:08:18,624 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:08:18,625 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:08:18,627 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:08:18,629 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:08:18,630 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:08:18,631 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:08:18,631 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:08:18,632 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:08:18,633 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:08:18,634 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:08:18,635 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:08:18,636 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:08:18,638 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:08:18,640 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:08:18,642 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:08:18,643 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:08:18,644 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:08:18,647 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:08:18,647 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:08:18,647 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:08:18,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:08:18,649 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:08:18,650 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:08:18,651 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:08:18,652 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:08:18,653 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:08:18,653 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:08:18,656 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 [2018-10-23 20:08:18,680 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:08:18,681 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:08:18,682 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:08:18,682 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:08:18,682 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:08:18,683 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:08:18,684 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:08:18,684 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:08:18,684 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:08:18,684 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:08:18,685 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:08:18,685 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:08:18,685 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:08:18,686 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:08:18,686 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:08:18,686 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:08:18,686 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:08:18,686 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:08:18,687 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:08:18,687 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:08:18,687 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:08:18,687 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:08:18,687 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:08:18,688 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:08:18,689 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:08:18,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:08:18,689 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:08:18,690 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:08:18,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:08:18,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:08:18,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:08:18,773 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:08:18,774 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:08:18,774 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-23 20:08:18,848 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/19a4e5a9d/597c6e15dcf04d04829c843a180af149/FLAGb9a4f50be [2018-10-23 20:08:19,581 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:08:19,582 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-23 20:08:19,611 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/19a4e5a9d/597c6e15dcf04d04829c843a180af149/FLAGb9a4f50be [2018-10-23 20:08:19,628 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/19a4e5a9d/597c6e15dcf04d04829c843a180af149 [2018-10-23 20:08:19,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:08:19,642 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:08:19,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:08:19,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:08:19,647 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:08:19,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:08:19" (1/1) ... [2018-10-23 20:08:19,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cc0d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:19, skipping insertion in model container [2018-10-23 20:08:19,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:08:19" (1/1) ... [2018-10-23 20:08:19,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:08:19,812 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:08:21,095 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:08:21,100 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:08:21,725 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:08:21,759 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:08:21,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21 WrapperNode [2018-10-23 20:08:21,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:08:21,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:08:21,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:08:21,762 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:08:21,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... [2018-10-23 20:08:21,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... [2018-10-23 20:08:22,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:08:22,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:08:22,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:08:22,398 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:08:22,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... [2018-10-23 20:08:22,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... [2018-10-23 20:08:22,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... [2018-10-23 20:08:22,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... [2018-10-23 20:08:22,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... [2018-10-23 20:08:22,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... [2018-10-23 20:08:22,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... [2018-10-23 20:08:22,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:08:22,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:08:22,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:08:22,704 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:08:22,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:08:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:08:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:08:22,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:08:31,673 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:08:31,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:08:31 BoogieIcfgContainer [2018-10-23 20:08:31,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:08:31,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:08:31,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:08:31,678 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:08:31,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:08:19" (1/3) ... [2018-10-23 20:08:31,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc27b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:08:31, skipping insertion in model container [2018-10-23 20:08:31,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:08:21" (2/3) ... [2018-10-23 20:08:31,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc27b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:08:31, skipping insertion in model container [2018-10-23 20:08:31,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:08:31" (3/3) ... [2018-10-23 20:08:31,682 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17_true-unreach-call.c [2018-10-23 20:08:31,691 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:08:31,700 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:08:31,718 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:08:31,758 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:08:31,758 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:08:31,759 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:08:31,759 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:08:31,759 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:08:31,759 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:08:31,759 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:08:31,759 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:08:31,759 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:08:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 20:08:31,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-23 20:08:31,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:31,802 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:08:31,804 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:31,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:31,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1074275470, now seen corresponding path program 1 times [2018-10-23 20:08:31,812 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:31,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:31,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:31,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:31,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:32,275 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 20:08:32,461 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-23 20:08:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:08:32,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:32,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:08:32,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:08:32,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:08:32,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:08:32,827 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 7 states. [2018-10-23 20:08:54,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:54,229 INFO L93 Difference]: Finished difference Result 5413 states and 10642 transitions. [2018-10-23 20:08:54,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:08:54,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2018-10-23 20:08:54,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:54,282 INFO L225 Difference]: With dead ends: 5413 [2018-10-23 20:08:54,282 INFO L226 Difference]: Without dead ends: 4578 [2018-10-23 20:08:54,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:08:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2018-10-23 20:08:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3072. [2018-10-23 20:08:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3072 states. [2018-10-23 20:08:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4384 transitions. [2018-10-23 20:08:54,472 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4384 transitions. Word has length 41 [2018-10-23 20:08:54,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:54,473 INFO L481 AbstractCegarLoop]: Abstraction has 3072 states and 4384 transitions. [2018-10-23 20:08:54,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:08:54,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4384 transitions. [2018-10-23 20:08:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-23 20:08:54,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:54,484 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:08:54,484 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:54,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1425155533, now seen corresponding path program 1 times [2018-10-23 20:08:54,485 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:54,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:54,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:54,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:54,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 137 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 20:08:54,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:08:54,980 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 [2018-10-23 20:08:54,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:55,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:08:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 20:08:55,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:08:55,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-23 20:08:55,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:08:55,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:08:55,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:08:55,314 INFO L87 Difference]: Start difference. First operand 3072 states and 4384 transitions. Second operand 6 states. [2018-10-23 20:09:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:17,937 INFO L93 Difference]: Finished difference Result 15950 states and 24157 transitions. [2018-10-23 20:09:17,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:09:17,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-10-23 20:09:17,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:17,984 INFO L225 Difference]: With dead ends: 15950 [2018-10-23 20:09:17,984 INFO L226 Difference]: Without dead ends: 10621 [2018-10-23 20:09:17,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:09:18,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10621 states. [2018-10-23 20:09:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10621 to 4575. [2018-10-23 20:09:18,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2018-10-23 20:09:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 5823 transitions. [2018-10-23 20:09:18,122 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 5823 transitions. Word has length 183 [2018-10-23 20:09:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:18,122 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 5823 transitions. [2018-10-23 20:09:18,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:09:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 5823 transitions. [2018-10-23 20:09:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-23 20:09:18,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:18,128 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:18,129 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:18,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:18,129 INFO L82 PathProgramCache]: Analyzing trace with hash -563431620, now seen corresponding path program 1 times [2018-10-23 20:09:18,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:18,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:18,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:18,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:18,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:18,584 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 20:09:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 128 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-23 20:09:18,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:09:18,772 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 [2018-10-23 20:09:18,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:18,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:09:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-23 20:09:18,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:09:18,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-10-23 20:09:18,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:09:18,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:09:18,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:09:18,998 INFO L87 Difference]: Start difference. First operand 4575 states and 5823 transitions. Second operand 7 states. [2018-10-23 20:09:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:30,492 INFO L93 Difference]: Finished difference Result 17421 states and 22220 transitions. [2018-10-23 20:09:30,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:09:30,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2018-10-23 20:09:30,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:30,551 INFO L225 Difference]: With dead ends: 17421 [2018-10-23 20:09:30,551 INFO L226 Difference]: Without dead ends: 12848 [2018-10-23 20:09:30,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:09:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12848 states. [2018-10-23 20:09:30,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12848 to 11343. [2018-10-23 20:09:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11343 states. [2018-10-23 20:09:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11343 states to 11343 states and 13234 transitions. [2018-10-23 20:09:30,903 INFO L78 Accepts]: Start accepts. Automaton has 11343 states and 13234 transitions. Word has length 253 [2018-10-23 20:09:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:30,904 INFO L481 AbstractCegarLoop]: Abstraction has 11343 states and 13234 transitions. [2018-10-23 20:09:30,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:09:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11343 states and 13234 transitions. [2018-10-23 20:09:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-23 20:09:30,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:30,914 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:30,914 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:30,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:30,914 INFO L82 PathProgramCache]: Analyzing trace with hash -365464936, now seen corresponding path program 1 times [2018-10-23 20:09:30,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:30,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:30,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:30,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:30,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-23 20:09:31,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:09:31,383 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 [2018-10-23 20:09:31,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:31,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:09:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:09:31,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:09:31,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:09:31,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:09:31,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:09:31,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:31,578 INFO L87 Difference]: Start difference. First operand 11343 states and 13234 transitions. Second operand 4 states. [2018-10-23 20:09:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:40,546 INFO L93 Difference]: Finished difference Result 39289 states and 46653 transitions. [2018-10-23 20:09:40,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:09:40,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2018-10-23 20:09:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:40,611 INFO L225 Difference]: With dead ends: 39289 [2018-10-23 20:09:40,612 INFO L226 Difference]: Without dead ends: 27948 [2018-10-23 20:09:40,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27948 states. [2018-10-23 20:09:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27948 to 15855. [2018-10-23 20:09:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15855 states. [2018-10-23 20:09:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 18576 transitions. [2018-10-23 20:09:40,974 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 18576 transitions. Word has length 274 [2018-10-23 20:09:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:40,975 INFO L481 AbstractCegarLoop]: Abstraction has 15855 states and 18576 transitions. [2018-10-23 20:09:40,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:09:40,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 18576 transitions. [2018-10-23 20:09:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-23 20:09:40,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:40,981 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:40,981 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:40,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:40,982 INFO L82 PathProgramCache]: Analyzing trace with hash 402036965, now seen corresponding path program 1 times [2018-10-23 20:09:40,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:40,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:40,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:40,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:40,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:09:41,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:09:41,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:09:41,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:09:41,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:09:41,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:41,606 INFO L87 Difference]: Start difference. First operand 15855 states and 18576 transitions. Second operand 4 states. [2018-10-23 20:09:49,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:49,675 INFO L93 Difference]: Finished difference Result 57276 states and 67801 transitions. [2018-10-23 20:09:49,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:09:49,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 295 [2018-10-23 20:09:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:49,772 INFO L225 Difference]: With dead ends: 57276 [2018-10-23 20:09:49,773 INFO L226 Difference]: Without dead ends: 41423 [2018-10-23 20:09:49,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41423 states. [2018-10-23 20:09:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41423 to 41423. [2018-10-23 20:09:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41423 states. [2018-10-23 20:09:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41423 states to 41423 states and 47908 transitions. [2018-10-23 20:09:50,326 INFO L78 Accepts]: Start accepts. Automaton has 41423 states and 47908 transitions. Word has length 295 [2018-10-23 20:09:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:50,327 INFO L481 AbstractCegarLoop]: Abstraction has 41423 states and 47908 transitions. [2018-10-23 20:09:50,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:09:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 41423 states and 47908 transitions. [2018-10-23 20:09:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-23 20:09:50,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:50,344 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:50,344 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:50,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:50,345 INFO L82 PathProgramCache]: Analyzing trace with hash -367565781, now seen corresponding path program 1 times [2018-10-23 20:09:50,345 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:50,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:50,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:50,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:50,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-23 20:09:50,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:09:50,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:09:50,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:09:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:09:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:50,746 INFO L87 Difference]: Start difference. First operand 41423 states and 47908 transitions. Second operand 4 states. [2018-10-23 20:09:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:57,320 INFO L93 Difference]: Finished difference Result 84348 states and 97328 transitions. [2018-10-23 20:09:57,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:09:57,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2018-10-23 20:09:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:57,393 INFO L225 Difference]: With dead ends: 84348 [2018-10-23 20:09:57,393 INFO L226 Difference]: Without dead ends: 39917 [2018-10-23 20:09:57,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:57,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39917 states. [2018-10-23 20:09:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39917 to 39917. [2018-10-23 20:09:57,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39917 states. [2018-10-23 20:09:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39917 states to 39917 states and 43913 transitions. [2018-10-23 20:09:57,876 INFO L78 Accepts]: Start accepts. Automaton has 39917 states and 43913 transitions. Word has length 396 [2018-10-23 20:09:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:57,877 INFO L481 AbstractCegarLoop]: Abstraction has 39917 states and 43913 transitions. [2018-10-23 20:09:57,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:09:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 39917 states and 43913 transitions. [2018-10-23 20:09:57,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-23 20:09:57,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:57,895 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:57,896 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:57,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:57,896 INFO L82 PathProgramCache]: Analyzing trace with hash -534694013, now seen corresponding path program 1 times [2018-10-23 20:09:57,896 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:57,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:57,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:57,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:57,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-23 20:09:58,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:09:58,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:09:58,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:09:58,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:09:58,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:09:58,408 INFO L87 Difference]: Start difference. First operand 39917 states and 43913 transitions. Second operand 4 states. [2018-10-23 20:10:06,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:06,125 INFO L93 Difference]: Finished difference Result 101640 states and 112569 transitions. [2018-10-23 20:10:06,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:10:06,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2018-10-23 20:10:06,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:06,206 INFO L225 Difference]: With dead ends: 101640 [2018-10-23 20:10:06,207 INFO L226 Difference]: Without dead ends: 62477 [2018-10-23 20:10:06,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:06,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62477 states. [2018-10-23 20:10:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62477 to 58717. [2018-10-23 20:10:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58717 states. [2018-10-23 20:10:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58717 states to 58717 states and 63103 transitions. [2018-10-23 20:10:06,872 INFO L78 Accepts]: Start accepts. Automaton has 58717 states and 63103 transitions. Word has length 400 [2018-10-23 20:10:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:06,873 INFO L481 AbstractCegarLoop]: Abstraction has 58717 states and 63103 transitions. [2018-10-23 20:10:06,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:10:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 58717 states and 63103 transitions. [2018-10-23 20:10:06,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-10-23 20:10:06,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:06,893 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:10:06,894 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:06,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:06,894 INFO L82 PathProgramCache]: Analyzing trace with hash -541352502, now seen corresponding path program 1 times [2018-10-23 20:10:06,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:06,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:06,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:06,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:06,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:07,477 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 20:10:07,742 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 20:10:07,984 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-23 20:10:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-23 20:10:08,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:08,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:10:08,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:10:08,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:10:08,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:10:08,171 INFO L87 Difference]: Start difference. First operand 58717 states and 63103 transitions. Second operand 6 states. [2018-10-23 20:10:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:16,826 INFO L93 Difference]: Finished difference Result 133708 states and 143478 transitions. [2018-10-23 20:10:16,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:10:16,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 441 [2018-10-23 20:10:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:16,896 INFO L225 Difference]: With dead ends: 133708 [2018-10-23 20:10:16,896 INFO L226 Difference]: Without dead ends: 63681 [2018-10-23 20:10:16,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:10:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63681 states. [2018-10-23 20:10:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63681 to 61693. [2018-10-23 20:10:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61693 states. [2018-10-23 20:10:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61693 states to 61693 states and 65558 transitions. [2018-10-23 20:10:17,550 INFO L78 Accepts]: Start accepts. Automaton has 61693 states and 65558 transitions. Word has length 441 [2018-10-23 20:10:17,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:17,551 INFO L481 AbstractCegarLoop]: Abstraction has 61693 states and 65558 transitions. [2018-10-23 20:10:17,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:10:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand 61693 states and 65558 transitions. [2018-10-23 20:10:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-10-23 20:10:17,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:17,562 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:10:17,562 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:17,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:17,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1867752915, now seen corresponding path program 1 times [2018-10-23 20:10:17,562 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:17,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:17,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:17,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:17,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-10-23 20:10:17,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:17,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:10:17,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:10:17,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:10:17,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:17,923 INFO L87 Difference]: Start difference. First operand 61693 states and 65558 transitions. Second operand 4 states. [2018-10-23 20:10:27,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:27,325 INFO L93 Difference]: Finished difference Result 175279 states and 186210 transitions. [2018-10-23 20:10:27,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:10:27,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 444 [2018-10-23 20:10:27,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:27,431 INFO L225 Difference]: With dead ends: 175279 [2018-10-23 20:10:27,431 INFO L226 Difference]: Without dead ends: 112834 [2018-10-23 20:10:27,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112834 states. [2018-10-23 20:10:28,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112834 to 91772. [2018-10-23 20:10:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91772 states. [2018-10-23 20:10:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91772 states to 91772 states and 96536 transitions. [2018-10-23 20:10:28,307 INFO L78 Accepts]: Start accepts. Automaton has 91772 states and 96536 transitions. Word has length 444 [2018-10-23 20:10:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:28,308 INFO L481 AbstractCegarLoop]: Abstraction has 91772 states and 96536 transitions. [2018-10-23 20:10:28,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:10:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 91772 states and 96536 transitions. [2018-10-23 20:10:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-23 20:10:28,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:28,320 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:10:28,320 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:28,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:28,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1149301670, now seen corresponding path program 1 times [2018-10-23 20:10:28,321 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:28,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:28,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:28,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:28,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-23 20:10:28,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:28,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:10:28,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:10:28,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:10:28,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:28,934 INFO L87 Difference]: Start difference. First operand 91772 states and 96536 transitions. Second operand 4 states. [2018-10-23 20:10:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:36,420 INFO L93 Difference]: Finished difference Result 195574 states and 205420 transitions. [2018-10-23 20:10:36,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:10:36,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2018-10-23 20:10:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:36,543 INFO L225 Difference]: With dead ends: 195574 [2018-10-23 20:10:36,543 INFO L226 Difference]: Without dead ends: 104556 [2018-10-23 20:10:36,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104556 states. [2018-10-23 20:10:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104556 to 97036. [2018-10-23 20:10:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97036 states. [2018-10-23 20:10:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97036 states to 97036 states and 101365 transitions. [2018-10-23 20:10:38,123 INFO L78 Accepts]: Start accepts. Automaton has 97036 states and 101365 transitions. Word has length 478 [2018-10-23 20:10:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:38,123 INFO L481 AbstractCegarLoop]: Abstraction has 97036 states and 101365 transitions. [2018-10-23 20:10:38,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:10:38,123 INFO L276 IsEmpty]: Start isEmpty. Operand 97036 states and 101365 transitions. [2018-10-23 20:10:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-23 20:10:38,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:38,136 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:10:38,136 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:38,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:38,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1110604286, now seen corresponding path program 1 times [2018-10-23 20:10:38,137 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:38,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:38,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:38,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:38,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 20:10:38,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:38,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:10:38,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:10:38,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:10:38,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:38,602 INFO L87 Difference]: Start difference. First operand 97036 states and 101365 transitions. Second operand 4 states. [2018-10-23 20:10:47,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:47,109 INFO L93 Difference]: Finished difference Result 194070 states and 202768 transitions. [2018-10-23 20:10:47,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:10:47,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 506 [2018-10-23 20:10:47,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:47,217 INFO L225 Difference]: With dead ends: 194070 [2018-10-23 20:10:47,218 INFO L226 Difference]: Without dead ends: 97788 [2018-10-23 20:10:47,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97788 states. [2018-10-23 20:10:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97788 to 94028. [2018-10-23 20:10:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94028 states. [2018-10-23 20:10:48,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94028 states to 94028 states and 97251 transitions. [2018-10-23 20:10:48,784 INFO L78 Accepts]: Start accepts. Automaton has 94028 states and 97251 transitions. Word has length 506 [2018-10-23 20:10:48,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:48,785 INFO L481 AbstractCegarLoop]: Abstraction has 94028 states and 97251 transitions. [2018-10-23 20:10:48,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:10:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 94028 states and 97251 transitions. [2018-10-23 20:10:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-10-23 20:10:48,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:48,795 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:10:48,795 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:48,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:48,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1309527391, now seen corresponding path program 1 times [2018-10-23 20:10:48,795 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:48,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:48,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:48,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:48,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2018-10-23 20:10:49,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:49,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:10:49,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:10:49,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:10:49,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:10:49,469 INFO L87 Difference]: Start difference. First operand 94028 states and 97251 transitions. Second operand 5 states. [2018-10-23 20:11:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:11:02,015 INFO L93 Difference]: Finished difference Result 279072 states and 288756 transitions. [2018-10-23 20:11:02,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:11:02,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 558 [2018-10-23 20:11:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:11:02,239 INFO L225 Difference]: With dead ends: 279072 [2018-10-23 20:11:02,239 INFO L226 Difference]: Without dead ends: 185798 [2018-10-23 20:11:02,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:11:02,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185798 states. [2018-10-23 20:11:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185798 to 152707. [2018-10-23 20:11:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152707 states. [2018-10-23 20:11:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152707 states to 152707 states and 157262 transitions. [2018-10-23 20:11:03,815 INFO L78 Accepts]: Start accepts. Automaton has 152707 states and 157262 transitions. Word has length 558 [2018-10-23 20:11:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:11:03,815 INFO L481 AbstractCegarLoop]: Abstraction has 152707 states and 157262 transitions. [2018-10-23 20:11:03,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:11:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 152707 states and 157262 transitions. [2018-10-23 20:11:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2018-10-23 20:11:03,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:11:03,838 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:11:03,838 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:11:03,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:11:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash -982508664, now seen corresponding path program 1 times [2018-10-23 20:11:03,838 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:11:03,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:11:03,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:03,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:03,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-10-23 20:11:05,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:11:05,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:11:05,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:11:05,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:11:05,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:11:05,452 INFO L87 Difference]: Start difference. First operand 152707 states and 157262 transitions. Second operand 3 states. [2018-10-23 20:11:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:11:11,786 INFO L93 Difference]: Finished difference Result 321204 states and 331090 transitions. [2018-10-23 20:11:11,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:11:11,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 703 [2018-10-23 20:11:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:11:11,950 INFO L225 Difference]: With dead ends: 321204 [2018-10-23 20:11:11,950 INFO L226 Difference]: Without dead ends: 169251 [2018-10-23 20:11:12,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:11:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169251 states. [2018-10-23 20:11:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169251 to 162483. [2018-10-23 20:11:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162483 states. [2018-10-23 20:11:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162483 states to 162483 states and 167254 transitions. [2018-10-23 20:11:14,368 INFO L78 Accepts]: Start accepts. Automaton has 162483 states and 167254 transitions. Word has length 703 [2018-10-23 20:11:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:11:14,369 INFO L481 AbstractCegarLoop]: Abstraction has 162483 states and 167254 transitions. [2018-10-23 20:11:14,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:11:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 162483 states and 167254 transitions. [2018-10-23 20:11:14,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2018-10-23 20:11:14,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:11:14,406 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:11:14,406 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:11:14,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:11:14,407 INFO L82 PathProgramCache]: Analyzing trace with hash 708687686, now seen corresponding path program 1 times [2018-10-23 20:11:14,407 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:11:14,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:11:14,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:14,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:14,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2018-10-23 20:11:15,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:11:15,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:11:15,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:11:15,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:11:15,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:11:15,232 INFO L87 Difference]: Start difference. First operand 162483 states and 167254 transitions. Second operand 4 states. [2018-10-23 20:11:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:11:22,735 INFO L93 Difference]: Finished difference Result 312160 states and 321621 transitions. [2018-10-23 20:11:22,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:11:22,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 916 [2018-10-23 20:11:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:11:22,900 INFO L225 Difference]: With dead ends: 312160 [2018-10-23 20:11:22,900 INFO L226 Difference]: Without dead ends: 150431 [2018-10-23 20:11:22,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:11:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150431 states. [2018-10-23 20:11:25,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150431 to 142159. [2018-10-23 20:11:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142159 states. [2018-10-23 20:11:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142159 states to 142159 states and 145338 transitions. [2018-10-23 20:11:25,193 INFO L78 Accepts]: Start accepts. Automaton has 142159 states and 145338 transitions. Word has length 916 [2018-10-23 20:11:25,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:11:25,193 INFO L481 AbstractCegarLoop]: Abstraction has 142159 states and 145338 transitions. [2018-10-23 20:11:25,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:11:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 142159 states and 145338 transitions. [2018-10-23 20:11:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1446 [2018-10-23 20:11:25,297 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:11:25,298 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:11:25,298 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:11:25,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:11:25,299 INFO L82 PathProgramCache]: Analyzing trace with hash -170690272, now seen corresponding path program 1 times [2018-10-23 20:11:25,299 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:11:25,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:11:25,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:25,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:25,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-10-23 20:11:29,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:11:29,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:11:29,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:11:29,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:11:29,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:11:29,425 INFO L87 Difference]: Start difference. First operand 142159 states and 145338 transitions. Second operand 5 states. [2018-10-23 20:11:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:11:42,121 INFO L93 Difference]: Finished difference Result 343727 states and 351526 transitions. [2018-10-23 20:11:42,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:11:42,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1445 [2018-10-23 20:11:42,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:11:42,353 INFO L225 Difference]: With dead ends: 343727 [2018-10-23 20:11:42,353 INFO L226 Difference]: Without dead ends: 201570 [2018-10-23 20:11:42,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:11:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201570 states. [2018-10-23 20:11:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201570 to 157954. [2018-10-23 20:11:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157954 states. [2018-10-23 20:11:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157954 states to 157954 states and 161457 transitions. [2018-10-23 20:11:44,871 INFO L78 Accepts]: Start accepts. Automaton has 157954 states and 161457 transitions. Word has length 1445 [2018-10-23 20:11:44,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:11:44,872 INFO L481 AbstractCegarLoop]: Abstraction has 157954 states and 161457 transitions. [2018-10-23 20:11:44,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:11:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 157954 states and 161457 transitions. [2018-10-23 20:11:44,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1484 [2018-10-23 20:11:44,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:11:44,981 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:11:44,981 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:11:44,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:11:44,982 INFO L82 PathProgramCache]: Analyzing trace with hash 496865041, now seen corresponding path program 1 times [2018-10-23 20:11:44,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:11:44,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:11:44,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:44,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:44,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 640 proven. 501 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-10-23 20:11:49,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:11:49,901 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 [2018-10-23 20:11:49,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:50,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:11:50,772 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 20:12:11,277 WARN L179 SmtUtils]: Spent 19.93 s on a formula simplification. DAG size of input: 145 DAG size of output: 76 Received shutdown request... [2018-10-23 20:12:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 412 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:12:16,415 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:12:16,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2018-10-23 20:12:16,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 20:12:16,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 20:12:16,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:12:16,419 INFO L87 Difference]: Start difference. First operand 157954 states and 161457 transitions. Second operand 11 states. [2018-10-23 20:12:16,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 20:12:16,420 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:12:16,426 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:12:16,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:12:16 BoogieIcfgContainer [2018-10-23 20:12:16,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:12:16,427 INFO L168 Benchmark]: Toolchain (without parser) took 236786.88 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 122.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 20:12:16,428 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:12:16,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2117.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:12:16,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 635.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 821.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:12:16,431 INFO L168 Benchmark]: Boogie Preprocessor took 306.55 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:12:16,432 INFO L168 Benchmark]: RCFGBuilder took 8969.68 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 210.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -153.7 MB). Peak memory consumption was 617.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:12:16,432 INFO L168 Benchmark]: TraceAbstraction took 224751.89 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 20:12:16,438 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2117.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 635.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 821.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 306.55 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8969.68 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 210.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -153.7 MB). Peak memory consumption was 617.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224751.89 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (157954states) and FLOYD_HOARE automaton (currently 2 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 224.6s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 162.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6922 SDtfs, 38703 SDslu, 1410 SDs, 0 SdLazy, 77780 SolverSat, 18021 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 128.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2292 GetRequests, 2213 SyntacticMatches, 22 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 25.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162483occurred in iteration=13, 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: 15.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 150987 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 35.6s InterpolantComputationTime, 11009 NumberOfCodeBlocks, 11009 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 10989 ConstructedInterpolants, 41 QuantifiedInterpolants, 46797970 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2634 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 9868/11258 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown