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/Problem19_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:10:08,485 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:10:08,488 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:10:08,505 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:10:08,506 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:10:08,507 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:10:08,509 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:10:08,512 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:10:08,521 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:10:08,524 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:10:08,525 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:10:08,525 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:10:08,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:10:08,530 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:10:08,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:10:08,532 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:10:08,538 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:10:08,542 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:10:08,547 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:10:08,548 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:10:08,554 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:10:08,555 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:10:08,559 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:10:08,559 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:10:08,560 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:10:08,560 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:10:08,562 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:10:08,562 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:10:08,565 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:10:08,566 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:10:08,566 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:10:08,568 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 22:10:08,570 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 22:10:08,602 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:10:08,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:10:08,604 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:10:08,605 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:10:08,605 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:10:08,605 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:10:08,606 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:10:08,607 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:10:08,607 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:10:08,607 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:10:08,607 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:10:08,607 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:10:08,608 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:10:08,608 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:10:08,608 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:10:08,608 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:10:08,608 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:10:08,609 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:10:08,609 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:10:08,609 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:10:08,609 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:10:08,609 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:10:08,610 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:10:08,611 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:10:08,611 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:10:08,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:10:08,611 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:10:08,612 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:10:08,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:10:08,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:10:08,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:10:08,689 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:10:08,690 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:10:08,690 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label30_true-unreach-call.c [2018-10-26 22:10:08,753 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41fb3fb90/dd9d155a124a46a48605d0d787c71760/FLAG09bc8b783 [2018-10-26 22:10:09,677 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:10:09,678 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label30_true-unreach-call.c [2018-10-26 22:10:09,724 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41fb3fb90/dd9d155a124a46a48605d0d787c71760/FLAG09bc8b783 [2018-10-26 22:10:09,741 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41fb3fb90/dd9d155a124a46a48605d0d787c71760 [2018-10-26 22:10:09,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:10:09,755 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:10:09,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:10:09,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:10:09,761 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:10:09,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:10:09" (1/1) ... [2018-10-26 22:10:09,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae346ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:09, skipping insertion in model container [2018-10-26 22:10:09,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:10:09" (1/1) ... [2018-10-26 22:10:09,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:10:10,019 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:10:12,132 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:10:12,138 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:10:13,483 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:10:13,543 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:10:13,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13 WrapperNode [2018-10-26 22:10:13,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:10:13,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:10:13,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:10:13,545 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:10:13,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... [2018-10-26 22:10:13,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... [2018-10-26 22:10:14,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:10:14,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:10:14,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:10:14,849 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:10:14,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... [2018-10-26 22:10:14,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... [2018-10-26 22:10:14,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... [2018-10-26 22:10:14,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... [2018-10-26 22:10:15,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... [2018-10-26 22:10:15,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... [2018-10-26 22:10:15,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... [2018-10-26 22:10:15,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:10:15,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:10:15,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:10:15,619 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:10:15,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:10:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:10:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:10:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:10:31,699 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:10:31,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:10:31 BoogieIcfgContainer [2018-10-26 22:10:31,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:10:31,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:10:31,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:10:31,705 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:10:31,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:10:09" (1/3) ... [2018-10-26 22:10:31,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c17902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:10:31, skipping insertion in model container [2018-10-26 22:10:31,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:13" (2/3) ... [2018-10-26 22:10:31,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c17902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:10:31, skipping insertion in model container [2018-10-26 22:10:31,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:10:31" (3/3) ... [2018-10-26 22:10:31,709 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label30_true-unreach-call.c [2018-10-26 22:10:31,720 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:10:31,730 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:10:31,748 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:10:31,798 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:10:32,058 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:10:32,059 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:10:32,059 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:10:32,059 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:10:32,059 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:10:32,059 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:10:32,059 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:10:32,060 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:10:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:10:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-26 22:10:32,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:10:32,128 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:10:32,130 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:10:32,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:10:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash 55000978, now seen corresponding path program 1 times [2018-10-26 22:10:32,138 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:10:32,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:10:32,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:32,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:10:32,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:10:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:10:32,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:10:32,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:10:32,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:10:32,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:10:32,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:32,679 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 22:10:54,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:10:54,562 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-10-26 22:10:54,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:10:54,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-26 22:10:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:10:54,624 INFO L225 Difference]: With dead ends: 6326 [2018-10-26 22:10:54,624 INFO L226 Difference]: Without dead ends: 4570 [2018-10-26 22:10:54,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-26 22:10:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-10-26 22:10:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-26 22:10:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-10-26 22:10:54,950 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 49 [2018-10-26 22:10:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:10:54,951 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-10-26 22:10:54,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:10:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-10-26 22:10:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-26 22:10:54,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:10:54,966 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:10:54,966 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:10:54,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:10:54,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1633161244, now seen corresponding path program 1 times [2018-10-26 22:10:54,968 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:10:54,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:10:54,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:54,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:10:54,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:10:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:10:55,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:10:55,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:10:55,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:10:55,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:10:55,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:55,507 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-10-26 22:11:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:11:21,011 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-10-26 22:11:21,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:11:21,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-10-26 22:11:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:11:21,071 INFO L225 Difference]: With dead ends: 17552 [2018-10-26 22:11:21,071 INFO L226 Difference]: Without dead ends: 12990 [2018-10-26 22:11:21,080 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 [2018-10-26 22:11:21,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-26 22:11:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-10-26 22:11:21,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-10-26 22:11:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-10-26 22:11:21,271 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 153 [2018-10-26 22:11:21,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:11:21,271 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-10-26 22:11:21,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:11:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-10-26 22:11:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-26 22:11:21,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:11:21,275 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:11:21,276 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:11:21,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:11:21,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1048162706, now seen corresponding path program 1 times [2018-10-26 22:11:21,276 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:11:21,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:11:21,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:21,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:11:21,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:11:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:11:21,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:11:21,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:11:21,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:11:21,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:11:21,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:11:21,605 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-10-26 22:11:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:11:42,105 INFO L93 Difference]: Finished difference Result 33844 states and 54415 transitions. [2018-10-26 22:11:42,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:11:42,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-10-26 22:11:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:11:42,179 INFO L225 Difference]: With dead ends: 33844 [2018-10-26 22:11:42,180 INFO L226 Difference]: Without dead ends: 25180 [2018-10-26 22:11:42,194 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 [2018-10-26 22:11:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2018-10-26 22:11:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 25142. [2018-10-26 22:11:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25142 states. [2018-10-26 22:11:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 35892 transitions. [2018-10-26 22:11:42,638 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 35892 transitions. Word has length 157 [2018-10-26 22:11:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:11:42,639 INFO L481 AbstractCegarLoop]: Abstraction has 25142 states and 35892 transitions. [2018-10-26 22:11:42,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:11:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 35892 transitions. [2018-10-26 22:11:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-26 22:11:42,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:11:42,644 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:11:42,644 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:11:42,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:11:42,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1188813862, now seen corresponding path program 1 times [2018-10-26 22:11:42,647 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:11:42,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:11:42,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:42,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:11:42,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:11:43,018 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-26 22:11:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:11:43,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:11:43,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:11:43,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:11:43,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:11:43,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:11:43,065 INFO L87 Difference]: Start difference. First operand 25142 states and 35892 transitions. Second operand 4 states. [2018-10-26 22:12:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:12:04,924 INFO L93 Difference]: Finished difference Result 98403 states and 140795 transitions. [2018-10-26 22:12:04,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:12:04,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2018-10-26 22:12:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:12:05,057 INFO L225 Difference]: With dead ends: 98403 [2018-10-26 22:12:05,058 INFO L226 Difference]: Without dead ends: 73263 [2018-10-26 22:12:05,104 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 [2018-10-26 22:12:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73263 states. [2018-10-26 22:12:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73263 to 73242. [2018-10-26 22:12:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73242 states. [2018-10-26 22:12:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73242 states to 73242 states and 91790 transitions. [2018-10-26 22:12:06,087 INFO L78 Accepts]: Start accepts. Automaton has 73242 states and 91790 transitions. Word has length 180 [2018-10-26 22:12:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:12:06,087 INFO L481 AbstractCegarLoop]: Abstraction has 73242 states and 91790 transitions. [2018-10-26 22:12:06,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:12:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 73242 states and 91790 transitions. [2018-10-26 22:12:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-10-26 22:12:06,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:12:06,104 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:12:06,104 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:12:06,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:12:06,105 INFO L82 PathProgramCache]: Analyzing trace with hash 5728548, now seen corresponding path program 1 times [2018-10-26 22:12:06,105 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:12:06,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:12:06,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:06,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:12:06,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:12:06,658 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:12:07,196 WARN L179 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-26 22:12:07,535 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-26 22:12:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-10-26 22:12:08,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:12:08,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:12:08,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:12:08,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:12:08,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:12:08,273 INFO L87 Difference]: Start difference. First operand 73242 states and 91790 transitions. Second operand 7 states. [2018-10-26 22:12:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:12:40,508 INFO L93 Difference]: Finished difference Result 172450 states and 210819 transitions. [2018-10-26 22:12:40,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:12:40,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 504 [2018-10-26 22:12:40,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:12:40,625 INFO L225 Difference]: With dead ends: 172450 [2018-10-26 22:12:40,626 INFO L226 Difference]: Without dead ends: 99210 [2018-10-26 22:12:40,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:12:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99210 states. [2018-10-26 22:12:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99210 to 95106. [2018-10-26 22:12:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95106 states. [2018-10-26 22:12:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95106 states to 95106 states and 114311 transitions. [2018-10-26 22:12:41,707 INFO L78 Accepts]: Start accepts. Automaton has 95106 states and 114311 transitions. Word has length 504 [2018-10-26 22:12:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:12:41,709 INFO L481 AbstractCegarLoop]: Abstraction has 95106 states and 114311 transitions. [2018-10-26 22:12:41,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:12:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 95106 states and 114311 transitions. [2018-10-26 22:12:41,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-10-26 22:12:41,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:12:41,727 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:12:41,728 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:12:41,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:12:41,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1551641150, now seen corresponding path program 1 times [2018-10-26 22:12:41,728 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:12:41,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:12:41,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:41,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:12:41,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:12:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-10-26 22:12:42,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:12:42,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:12:42,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:12:42,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:12:42,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:12:42,359 INFO L87 Difference]: Start difference. First operand 95106 states and 114311 transitions. Second operand 4 states. [2018-10-26 22:13:00,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:13:00,486 INFO L93 Difference]: Finished difference Result 238032 states and 291023 transitions. [2018-10-26 22:13:00,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:13:00,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 532 [2018-10-26 22:13:00,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:13:00,626 INFO L225 Difference]: With dead ends: 238032 [2018-10-26 22:13:00,626 INFO L226 Difference]: Without dead ends: 142928 [2018-10-26 22:13:00,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142928 states. [2018-10-26 22:13:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142928 to 142917. [2018-10-26 22:13:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142917 states. [2018-10-26 22:13:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142917 states to 142917 states and 167345 transitions. [2018-10-26 22:13:02,747 INFO L78 Accepts]: Start accepts. Automaton has 142917 states and 167345 transitions. Word has length 532 [2018-10-26 22:13:02,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:13:02,748 INFO L481 AbstractCegarLoop]: Abstraction has 142917 states and 167345 transitions. [2018-10-26 22:13:02,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:13:02,748 INFO L276 IsEmpty]: Start isEmpty. Operand 142917 states and 167345 transitions. [2018-10-26 22:13:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2018-10-26 22:13:02,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:13:02,785 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:13:02,785 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:13:02,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:13:02,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1642943849, now seen corresponding path program 1 times [2018-10-26 22:13:02,786 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:13:02,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:13:02,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:02,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:02,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-26 22:13:03,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:13:03,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:13:03,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:13:03,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:13:03,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:03,972 INFO L87 Difference]: Start difference. First operand 142917 states and 167345 transitions. Second operand 4 states. [2018-10-26 22:13:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:13:23,941 INFO L93 Difference]: Finished difference Result 285835 states and 334697 transitions. [2018-10-26 22:13:23,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:13:23,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 904 [2018-10-26 22:13:23,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:13:24,108 INFO L225 Difference]: With dead ends: 285835 [2018-10-26 22:13:24,109 INFO L226 Difference]: Without dead ends: 142920 [2018-10-26 22:13:24,184 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 [2018-10-26 22:13:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142920 states. [2018-10-26 22:13:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142920 to 131981. [2018-10-26 22:13:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131981 states. [2018-10-26 22:13:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131981 states to 131981 states and 147273 transitions. [2018-10-26 22:13:26,300 INFO L78 Accepts]: Start accepts. Automaton has 131981 states and 147273 transitions. Word has length 904 [2018-10-26 22:13:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:13:26,302 INFO L481 AbstractCegarLoop]: Abstraction has 131981 states and 147273 transitions. [2018-10-26 22:13:26,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:13:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 131981 states and 147273 transitions. [2018-10-26 22:13:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2018-10-26 22:13:26,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:13:26,317 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:13:26,317 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:13:26,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:13:26,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1882583691, now seen corresponding path program 1 times [2018-10-26 22:13:26,318 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:13:26,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:13:26,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:26,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:26,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-26 22:13:27,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:13:27,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:13:27,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:13:27,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:13:27,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:27,205 INFO L87 Difference]: Start difference. First operand 131981 states and 147273 transitions. Second operand 4 states. [2018-10-26 22:13:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:13:49,945 INFO L93 Difference]: Finished difference Result 451275 states and 505196 transitions. [2018-10-26 22:13:49,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:13:49,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 922 [2018-10-26 22:13:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:13:50,269 INFO L225 Difference]: With dead ends: 451275 [2018-10-26 22:13:50,269 INFO L226 Difference]: Without dead ends: 308364 [2018-10-26 22:13:50,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308364 states. [2018-10-26 22:13:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308364 to 304112. [2018-10-26 22:13:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304112 states. [2018-10-26 22:13:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304112 states to 304112 states and 333812 transitions. [2018-10-26 22:13:55,090 INFO L78 Accepts]: Start accepts. Automaton has 304112 states and 333812 transitions. Word has length 922 [2018-10-26 22:13:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:13:55,092 INFO L481 AbstractCegarLoop]: Abstraction has 304112 states and 333812 transitions. [2018-10-26 22:13:55,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:13:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 304112 states and 333812 transitions. [2018-10-26 22:13:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2018-10-26 22:13:55,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:13:55,116 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:13:55,116 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:13:55,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:13:55,117 INFO L82 PathProgramCache]: Analyzing trace with hash 617028723, now seen corresponding path program 1 times [2018-10-26 22:13:55,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:13:55,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:13:55,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:55,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:55,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-26 22:14:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 524 proven. 4 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-10-26 22:14:03,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:14:03,650 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 [2018-10-26 22:14:03,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:14:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:14:04,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:14:04,110 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-26 22:14:04,311 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:14:04,311 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:14:04,317 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:14:04,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:14:04 BoogieIcfgContainer [2018-10-26 22:14:04,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:14:04,318 INFO L168 Benchmark]: Toolchain (without parser) took 234564.39 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 742.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:14:04,320 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. [2018-10-26 22:14:04,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3787.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.2 MB in the end (delta: 404.3 MB). Peak memory consumption was 404.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:14:04,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 1303.52 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 879.8 MB). Free memory was 991.2 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:14:04,322 INFO L168 Benchmark]: Boogie Preprocessor took 769.53 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: 102.6 MB). Peak memory consumption was 102.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:14:04,323 INFO L168 Benchmark]: RCFGBuilder took 16082.08 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 244.8 MB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 542.1 MB). Peak memory consumption was 787.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:14:04,324 INFO L168 Benchmark]: TraceAbstraction took 212616.09 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: -2.1 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:14:04,335 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 3787.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.2 MB in the end (delta: 404.3 MB). Peak memory consumption was 404.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1303.52 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 879.8 MB). Free memory was 991.2 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 769.53 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: 102.6 MB). Peak memory consumption was 102.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16082.08 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 244.8 MB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 542.1 MB). Peak memory consumption was 787.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212616.09 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: -2.1 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was analyzing trace of length 1097 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 184.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9805 SDtfs, 33586 SDslu, 3152 SDs, 0 SdLazy, 72267 SolverSat, 18538 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 155.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=304112occurred in iteration=8, 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: 11.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 23695 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 3401 NumberOfCodeBlocks, 3401 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3393 ConstructedInterpolants, 0 QuantifiedInterpolants, 4139723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 2276/2276 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown