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/Problem13_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:08:27,603 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:08:27,605 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:08:27,624 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:08:27,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:08:27,628 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:08:27,630 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:08:27,632 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:08:27,634 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:08:27,635 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:08:27,636 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:08:27,636 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:08:27,637 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:08:27,638 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:08:27,640 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:08:27,640 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:08:27,641 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:08:27,644 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:08:27,646 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:08:27,648 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:08:27,649 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:08:27,651 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:08:27,653 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:08:27,663 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:08:27,685 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:08:27,685 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:08:27,686 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:08:27,686 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:08:27,687 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:08:27,687 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:08:27,687 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:08:27,688 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:08:27,688 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:08:27,688 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:08:27,688 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:08:27,689 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:08:27,689 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:08:27,689 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:08:27,689 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:08:27,690 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:08:27,690 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:08:27,690 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:08:27,690 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:08:27,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:08:27,691 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:08:27,691 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:08:27,691 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:08:27,691 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:08:27,692 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:08:27,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:08:27,692 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:08:27,692 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:08:27,755 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:08:27,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:08:27,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:08:27,782 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:08:27,783 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:08:27,783 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label19_false-unreach-call.c [2018-10-24 14:08:27,856 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c93748761/a797e406e7284fe08a7d0f29975b13d9/FLAG838d27030 [2018-10-24 14:08:28,635 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:08:28,636 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label19_false-unreach-call.c [2018-10-24 14:08:28,681 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c93748761/a797e406e7284fe08a7d0f29975b13d9/FLAG838d27030 [2018-10-24 14:08:28,703 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c93748761/a797e406e7284fe08a7d0f29975b13d9 [2018-10-24 14:08:28,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:08:28,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:08:28,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:08:28,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:08:28,729 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:08:28,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:28" (1/1) ... [2018-10-24 14:08:28,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a508f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:28, skipping insertion in model container [2018-10-24 14:08:28,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:28" (1/1) ... [2018-10-24 14:08:28,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:08:28,925 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:08:30,347 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:08:30,354 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:08:31,129 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:08:31,165 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:08:31,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31 WrapperNode [2018-10-24 14:08:31,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:08:31,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:08:31,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:08:31,167 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:08:31,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... [2018-10-24 14:08:31,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... [2018-10-24 14:08:31,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:08:31,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:08:31,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:08:31,932 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:08:31,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... [2018-10-24 14:08:31,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... [2018-10-24 14:08:32,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... [2018-10-24 14:08:32,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... [2018-10-24 14:08:32,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... [2018-10-24 14:08:32,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... [2018-10-24 14:08:32,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... [2018-10-24 14:08:32,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:08:32,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:08:32,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:08:32,462 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:08:32,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:08:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:08:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:08:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:08:47,969 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:08:47,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:47 BoogieIcfgContainer [2018-10-24 14:08:47,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:08:47,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:08:47,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:08:47,974 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:08:47,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:08:28" (1/3) ... [2018-10-24 14:08:47,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b82e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:47, skipping insertion in model container [2018-10-24 14:08:47,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:31" (2/3) ... [2018-10-24 14:08:47,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b82e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:47, skipping insertion in model container [2018-10-24 14:08:47,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:47" (3/3) ... [2018-10-24 14:08:47,978 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label19_false-unreach-call.c [2018-10-24 14:08:47,988 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:08:47,998 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:08:48,015 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:08:48,062 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:08:48,063 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:08:48,063 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:08:48,063 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:08:48,063 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:08:48,063 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:08:48,063 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:08:48,063 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:08:48,064 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:08:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:08:48,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 14:08:48,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:48,114 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:08:48,116 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:48,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:48,122 INFO L82 PathProgramCache]: Analyzing trace with hash 670581594, now seen corresponding path program 1 times [2018-10-24 14:08:48,125 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:48,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:48,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:48,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:48,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:08:48,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:48,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:08:48,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:08:48,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:08:48,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:48,555 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:09:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:04,219 INFO L93 Difference]: Finished difference Result 3993 states and 7498 transitions. [2018-10-24 14:09:04,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:04,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-24 14:09:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:04,274 INFO L225 Difference]: With dead ends: 3993 [2018-10-24 14:09:04,274 INFO L226 Difference]: Without dead ends: 2887 [2018-10-24 14:09:04,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2018-10-24 14:09:04,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1936. [2018-10-24 14:09:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2018-10-24 14:09:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 3550 transitions. [2018-10-24 14:09:04,460 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 3550 transitions. Word has length 18 [2018-10-24 14:09:04,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:04,460 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 3550 transitions. [2018-10-24 14:09:04,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:04,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 3550 transitions. [2018-10-24 14:09:04,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-24 14:09:04,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:04,467 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:04,468 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:04,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:04,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1916991881, now seen corresponding path program 1 times [2018-10-24 14:09:04,469 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:04,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:04,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:04,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:04,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:04,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:04,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:04,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:04,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:04,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:04,794 INFO L87 Difference]: Start difference. First operand 1936 states and 3550 transitions. Second operand 4 states. [2018-10-24 14:09:17,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:17,753 INFO L93 Difference]: Finished difference Result 7120 states and 13344 transitions. [2018-10-24 14:09:17,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:17,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-10-24 14:09:17,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:17,784 INFO L225 Difference]: With dead ends: 7120 [2018-10-24 14:09:17,784 INFO L226 Difference]: Without dead ends: 5186 [2018-10-24 14:09:17,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2018-10-24 14:09:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 3554. [2018-10-24 14:09:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2018-10-24 14:09:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 6248 transitions. [2018-10-24 14:09:17,877 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 6248 transitions. Word has length 87 [2018-10-24 14:09:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:17,878 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 6248 transitions. [2018-10-24 14:09:17,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 6248 transitions. [2018-10-24 14:09:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 14:09:17,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:17,886 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:17,887 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:17,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:17,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2105908058, now seen corresponding path program 1 times [2018-10-24 14:09:17,888 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:17,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:17,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:17,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:17,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:18,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:18,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:18,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:18,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:18,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:18,081 INFO L87 Difference]: Start difference. First operand 3554 states and 6248 transitions. Second operand 4 states. [2018-10-24 14:09:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:28,521 INFO L93 Difference]: Finished difference Result 12674 states and 22438 transitions. [2018-10-24 14:09:28,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:28,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-10-24 14:09:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:28,570 INFO L225 Difference]: With dead ends: 12674 [2018-10-24 14:09:28,571 INFO L226 Difference]: Without dead ends: 9122 [2018-10-24 14:09:28,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2018-10-24 14:09:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 9115. [2018-10-24 14:09:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2018-10-24 14:09:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 14199 transitions. [2018-10-24 14:09:28,766 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 14199 transitions. Word has length 100 [2018-10-24 14:09:28,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:28,768 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 14199 transitions. [2018-10-24 14:09:28,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 14199 transitions. [2018-10-24 14:09:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 14:09:28,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:28,778 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:28,779 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:28,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1681546925, now seen corresponding path program 1 times [2018-10-24 14:09:28,779 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:28,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:28,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:28,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:28,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:29,285 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 14:09:29,900 WARN L179 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 14:09:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:30,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:30,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:09:30,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:09:30,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:09:30,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:09:30,050 INFO L87 Difference]: Start difference. First operand 9115 states and 14199 transitions. Second operand 5 states. [2018-10-24 14:09:42,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:42,142 INFO L93 Difference]: Finished difference Result 29264 states and 45079 transitions. [2018-10-24 14:09:42,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:09:42,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-24 14:09:42,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:42,216 INFO L225 Difference]: With dead ends: 29264 [2018-10-24 14:09:42,216 INFO L226 Difference]: Without dead ends: 20151 [2018-10-24 14:09:42,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:09:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2018-10-24 14:09:42,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 20149. [2018-10-24 14:09:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20149 states. [2018-10-24 14:09:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20149 states to 20149 states and 28284 transitions. [2018-10-24 14:09:42,763 INFO L78 Accepts]: Start accepts. Automaton has 20149 states and 28284 transitions. Word has length 121 [2018-10-24 14:09:42,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:42,764 INFO L481 AbstractCegarLoop]: Abstraction has 20149 states and 28284 transitions. [2018-10-24 14:09:42,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:09:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 20149 states and 28284 transitions. [2018-10-24 14:09:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 14:09:42,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:42,766 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:42,766 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:42,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:42,767 INFO L82 PathProgramCache]: Analyzing trace with hash 964067941, now seen corresponding path program 1 times [2018-10-24 14:09:42,767 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:42,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:42,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:42,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:42,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:42,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:42,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:42,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:09:42,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:09:42,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:09:42,912 INFO L87 Difference]: Start difference. First operand 20149 states and 28284 transitions. Second operand 3 states. [2018-10-24 14:09:50,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:50,762 INFO L93 Difference]: Finished difference Result 41070 states and 57647 transitions. [2018-10-24 14:09:50,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:09:50,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2018-10-24 14:09:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:50,808 INFO L225 Difference]: With dead ends: 41070 [2018-10-24 14:09:50,808 INFO L226 Difference]: Without dead ends: 21711 [2018-10-24 14:09:50,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:09:50,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21711 states. [2018-10-24 14:09:51,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21711 to 21708. [2018-10-24 14:09:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21708 states. [2018-10-24 14:09:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21708 states to 21708 states and 27055 transitions. [2018-10-24 14:09:51,167 INFO L78 Accepts]: Start accepts. Automaton has 21708 states and 27055 transitions. Word has length 144 [2018-10-24 14:09:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:51,168 INFO L481 AbstractCegarLoop]: Abstraction has 21708 states and 27055 transitions. [2018-10-24 14:09:51,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:09:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 21708 states and 27055 transitions. [2018-10-24 14:09:51,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-24 14:09:51,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:51,176 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:09:51,176 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:51,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:51,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1570115156, now seen corresponding path program 1 times [2018-10-24 14:09:51,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:51,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:51,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:51,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:51,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:51,628 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:09:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:51,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:51,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:51,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:51,726 INFO L87 Difference]: Start difference. First operand 21708 states and 27055 transitions. Second operand 4 states. [2018-10-24 14:10:01,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:01,637 INFO L93 Difference]: Finished difference Result 64687 states and 81783 transitions. [2018-10-24 14:10:01,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:01,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2018-10-24 14:10:01,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:01,709 INFO L225 Difference]: With dead ends: 64687 [2018-10-24 14:10:01,710 INFO L226 Difference]: Without dead ends: 38998 [2018-10-24 14:10:01,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38998 states. [2018-10-24 14:10:02,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38998 to 35054. [2018-10-24 14:10:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35054 states. [2018-10-24 14:10:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35054 states to 35054 states and 41125 transitions. [2018-10-24 14:10:02,240 INFO L78 Accepts]: Start accepts. Automaton has 35054 states and 41125 transitions. Word has length 261 [2018-10-24 14:10:02,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:02,240 INFO L481 AbstractCegarLoop]: Abstraction has 35054 states and 41125 transitions. [2018-10-24 14:10:02,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 35054 states and 41125 transitions. [2018-10-24 14:10:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-24 14:10:02,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:02,247 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 14:10:02,247 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:02,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:02,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1991819509, now seen corresponding path program 1 times [2018-10-24 14:10:02,248 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:02,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:02,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:02,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:02,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-24 14:10:02,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:02,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:02,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:10:02,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:10:02,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:10:02,725 INFO L87 Difference]: Start difference. First operand 35054 states and 41125 transitions. Second operand 5 states. [2018-10-24 14:10:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:21,819 INFO L93 Difference]: Finished difference Result 114511 states and 134185 transitions. [2018-10-24 14:10:21,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:10:21,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2018-10-24 14:10:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:21,936 INFO L225 Difference]: With dead ends: 114511 [2018-10-24 14:10:21,936 INFO L226 Difference]: Without dead ends: 80247 [2018-10-24 14:10:21,983 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 [2018-10-24 14:10:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80247 states. [2018-10-24 14:10:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80247 to 76921. [2018-10-24 14:10:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76921 states. [2018-10-24 14:10:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76921 states to 76921 states and 88858 transitions. [2018-10-24 14:10:22,963 INFO L78 Accepts]: Start accepts. Automaton has 76921 states and 88858 transitions. Word has length 284 [2018-10-24 14:10:22,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:22,963 INFO L481 AbstractCegarLoop]: Abstraction has 76921 states and 88858 transitions. [2018-10-24 14:10:22,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:10:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 76921 states and 88858 transitions. [2018-10-24 14:10:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-24 14:10:22,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:22,971 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:22,971 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:22,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:22,971 INFO L82 PathProgramCache]: Analyzing trace with hash 464366551, now seen corresponding path program 1 times [2018-10-24 14:10:22,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:22,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:22,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:22,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:22,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 14:10:23,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:23,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:23,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:23,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:23,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:23,742 INFO L87 Difference]: Start difference. First operand 76921 states and 88858 transitions. Second operand 4 states. [2018-10-24 14:10:36,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:36,357 INFO L93 Difference]: Finished difference Result 161708 states and 187935 transitions. [2018-10-24 14:10:36,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:36,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2018-10-24 14:10:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:36,473 INFO L225 Difference]: With dead ends: 161708 [2018-10-24 14:10:36,474 INFO L226 Difference]: Without dead ends: 85577 [2018-10-24 14:10:36,534 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 [2018-10-24 14:10:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85577 states. [2018-10-24 14:10:38,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85577 to 83999. [2018-10-24 14:10:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83999 states. [2018-10-24 14:10:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83999 states to 83999 states and 93763 transitions. [2018-10-24 14:10:38,195 INFO L78 Accepts]: Start accepts. Automaton has 83999 states and 93763 transitions. Word has length 306 [2018-10-24 14:10:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:38,196 INFO L481 AbstractCegarLoop]: Abstraction has 83999 states and 93763 transitions. [2018-10-24 14:10:38,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 83999 states and 93763 transitions. [2018-10-24 14:10:38,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-10-24 14:10:38,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:38,219 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:38,219 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:38,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:38,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1544791703, now seen corresponding path program 1 times [2018-10-24 14:10:38,220 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:38,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:38,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:38,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:38,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:38,607 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:10:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-10-24 14:10:38,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:38,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:38,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:38,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:38,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:38,840 INFO L87 Difference]: Start difference. First operand 83999 states and 93763 transitions. Second operand 4 states. [2018-10-24 14:10:50,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:50,265 INFO L93 Difference]: Finished difference Result 256261 states and 285619 transitions. [2018-10-24 14:10:50,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:50,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 472 [2018-10-24 14:10:50,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:50,451 INFO L225 Difference]: With dead ends: 256261 [2018-10-24 14:10:50,452 INFO L226 Difference]: Without dead ends: 171472 [2018-10-24 14:10:50,520 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 [2018-10-24 14:10:50,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171472 states. [2018-10-24 14:10:52,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171472 to 166718. [2018-10-24 14:10:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166718 states. [2018-10-24 14:10:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166718 states to 166718 states and 180211 transitions. [2018-10-24 14:10:52,687 INFO L78 Accepts]: Start accepts. Automaton has 166718 states and 180211 transitions. Word has length 472 [2018-10-24 14:10:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:52,688 INFO L481 AbstractCegarLoop]: Abstraction has 166718 states and 180211 transitions. [2018-10-24 14:10:52,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 166718 states and 180211 transitions. [2018-10-24 14:10:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-10-24 14:10:52,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:52,740 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:52,740 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:52,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:52,741 INFO L82 PathProgramCache]: Analyzing trace with hash -126964752, now seen corresponding path program 1 times [2018-10-24 14:10:52,741 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:52,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:52,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:52,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:52,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-24 14:10:53,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:53,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:53,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:53,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:53,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:53,225 INFO L87 Difference]: Start difference. First operand 166718 states and 180211 transitions. Second operand 4 states. [2018-10-24 14:11:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:04,696 INFO L93 Difference]: Finished difference Result 387809 states and 419782 transitions. [2018-10-24 14:11:04,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:04,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 579 [2018-10-24 14:11:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:04,924 INFO L225 Difference]: With dead ends: 387809 [2018-10-24 14:11:04,925 INFO L226 Difference]: Without dead ends: 221090 [2018-10-24 14:11:05,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221090 states. [2018-10-24 14:11:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221090 to 215537. [2018-10-24 14:11:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215537 states. [2018-10-24 14:11:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215537 states to 215537 states and 229511 transitions. [2018-10-24 14:11:08,095 INFO L78 Accepts]: Start accepts. Automaton has 215537 states and 229511 transitions. Word has length 579 [2018-10-24 14:11:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:08,096 INFO L481 AbstractCegarLoop]: Abstraction has 215537 states and 229511 transitions. [2018-10-24 14:11:08,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 215537 states and 229511 transitions. [2018-10-24 14:11:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-10-24 14:11:08,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:08,127 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:08,127 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:08,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:08,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1266617253, now seen corresponding path program 1 times [2018-10-24 14:11:08,128 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:08,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:08,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:08,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:08,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 670 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-10-24 14:11:08,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:08,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:08,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:08,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:08,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:08,594 INFO L87 Difference]: Start difference. First operand 215537 states and 229511 transitions. Second operand 4 states. [2018-10-24 14:11:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:22,457 INFO L93 Difference]: Finished difference Result 509972 states and 543191 transitions. [2018-10-24 14:11:22,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:22,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 664 [2018-10-24 14:11:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:22,752 INFO L225 Difference]: With dead ends: 509972 [2018-10-24 14:11:22,752 INFO L226 Difference]: Without dead ends: 295225 [2018-10-24 14:11:22,874 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 [2018-10-24 14:11:23,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295225 states. [2018-10-24 14:11:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295225 to 288043. [2018-10-24 14:11:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288043 states. [2018-10-24 14:11:28,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288043 states to 288043 states and 305838 transitions. [2018-10-24 14:11:28,683 INFO L78 Accepts]: Start accepts. Automaton has 288043 states and 305838 transitions. Word has length 664 [2018-10-24 14:11:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:28,684 INFO L481 AbstractCegarLoop]: Abstraction has 288043 states and 305838 transitions. [2018-10-24 14:11:28,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 288043 states and 305838 transitions. [2018-10-24 14:11:28,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2018-10-24 14:11:28,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:28,707 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:28,707 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:28,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:28,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1250965412, now seen corresponding path program 1 times [2018-10-24 14:11:28,708 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:28,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:28,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:28,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:28,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2018-10-24 14:11:31,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:31,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:31,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:31,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:31,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:31,107 INFO L87 Difference]: Start difference. First operand 288043 states and 305838 transitions. Second operand 4 states. [2018-10-24 14:11:43,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:43,316 INFO L93 Difference]: Finished difference Result 571361 states and 606759 transitions. [2018-10-24 14:11:43,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:11:43,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 694 [2018-10-24 14:11:43,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:43,667 INFO L225 Difference]: With dead ends: 571361 [2018-10-24 14:11:43,667 INFO L226 Difference]: Without dead ends: 284108 [2018-10-24 14:11:43,796 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 [2018-10-24 14:11:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284108 states. [2018-10-24 14:11:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284108 to 279373. [2018-10-24 14:11:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279373 states. [2018-10-24 14:11:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279373 states to 279373 states and 293602 transitions. [2018-10-24 14:11:47,063 INFO L78 Accepts]: Start accepts. Automaton has 279373 states and 293602 transitions. Word has length 694 [2018-10-24 14:11:47,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:47,064 INFO L481 AbstractCegarLoop]: Abstraction has 279373 states and 293602 transitions. [2018-10-24 14:11:47,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 279373 states and 293602 transitions. [2018-10-24 14:11:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2018-10-24 14:11:47,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:47,095 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 6, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:47,095 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:47,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:47,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2142948040, now seen corresponding path program 1 times [2018-10-24 14:11:47,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:47,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:47,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:47,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:47,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 1168 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2018-10-24 14:11:48,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:48,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:48,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:48,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:48,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:48,775 INFO L87 Difference]: Start difference. First operand 279373 states and 293602 transitions. Second operand 4 states. [2018-10-24 14:12:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:03,577 INFO L93 Difference]: Finished difference Result 554032 states and 582431 transitions. [2018-10-24 14:12:03,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:03,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 787 [2018-10-24 14:12:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:03,894 INFO L225 Difference]: With dead ends: 554032 [2018-10-24 14:12:03,894 INFO L226 Difference]: Without dead ends: 275449 [2018-10-24 14:12:04,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:04,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275449 states. [2018-10-24 14:12:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275449 to 271479. [2018-10-24 14:12:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271479 states. [2018-10-24 14:12:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271479 states to 271479 states and 280965 transitions. [2018-10-24 14:12:07,335 INFO L78 Accepts]: Start accepts. Automaton has 271479 states and 280965 transitions. Word has length 787 [2018-10-24 14:12:07,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:07,336 INFO L481 AbstractCegarLoop]: Abstraction has 271479 states and 280965 transitions. [2018-10-24 14:12:07,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:12:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand 271479 states and 280965 transitions. [2018-10-24 14:12:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-10-24 14:12:07,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:07,382 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:07,383 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:07,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:07,383 INFO L82 PathProgramCache]: Analyzing trace with hash -54212809, now seen corresponding path program 1 times [2018-10-24 14:12:07,383 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:07,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:07,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:07,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:07,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1628 backedges. 1207 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-10-24 14:12:09,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:09,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:12:09,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:12:09,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:12:09,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:12:09,891 INFO L87 Difference]: Start difference. First operand 271479 states and 280965 transitions. Second operand 5 states. Received shutdown request... [2018-10-24 14:12:14,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:12:14,273 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:12:14,279 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:12:14,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:12:14 BoogieIcfgContainer [2018-10-24 14:12:14,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:12:14,281 INFO L168 Benchmark]: Toolchain (without parser) took 225561.33 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -220.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 14:12:14,282 INFO L168 Benchmark]: CDTParser took 1.03 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. [2018-10-24 14:12:14,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2441.63 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:14,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 764.57 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 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 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:14,284 INFO L168 Benchmark]: Boogie Preprocessor took 529.92 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 68.7 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:14,285 INFO L168 Benchmark]: RCFGBuilder took 15508.20 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 226.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 72.7 MB). Peak memory consumption was 593.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:14,286 INFO L168 Benchmark]: TraceAbstraction took 206309.05 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 418.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 14:12:14,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 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 2441.63 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 764.57 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 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 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 529.92 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 68.7 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15508.20 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 226.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 72.7 MB). Peak memory consumption was 593.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206309.05 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 418.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 63). Cancelled while BasicCegarLoop was constructing difference of abstraction (271479states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (41988 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 206.2s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 171.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10815 SDtfs, 29601 SDslu, 3077 SDs, 0 SdLazy, 61835 SolverSat, 17212 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 134.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288043occurred in iteration=11, 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: 22.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 37637 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 5427 NumberOfCodeBlocks, 5427 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5413 ConstructedInterpolants, 0 QuantifiedInterpolants, 5653328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 7145/7145 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown