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_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:04:07,507 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:04:07,509 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:04:07,520 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:04:07,521 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:04:07,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:04:07,523 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:04:07,525 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:04:07,527 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:04:07,528 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:04:07,529 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:04:07,529 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:04:07,530 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:04:07,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:04:07,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:04:07,533 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:04:07,534 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:04:07,536 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:04:07,538 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:04:07,540 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:04:07,541 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:04:07,542 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:04:07,548 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:04:07,548 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:04:07,549 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:04:07,550 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:04:07,554 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:04:07,555 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:04:07,555 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:04:07,556 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:04:07,560 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:04:07,560 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 17:04:07,565 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 17:04:07,592 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:04:07,592 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:04:07,593 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:04:07,593 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:04:07,594 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:04:07,594 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:04:07,594 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:04:07,595 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:04:07,595 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:04:07,595 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:04:07,595 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:04:07,595 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:04:07,596 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:04:07,596 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:04:07,596 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:04:07,596 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:04:07,596 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:04:07,597 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:04:07,597 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:04:07,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:04:07,597 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:04:07,597 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:04:07,598 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:04:07,598 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:04:07,598 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:04:07,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:04:07,598 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:04:07,598 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:04:07,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:04:07,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:04:07,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:04:07,665 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:04:07,665 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:04:07,666 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c [2018-10-24 17:04:07,734 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4385b8dc4/efdd28ea1a4a41f09de60cbea1f0fb9d/FLAGce8c166bb [2018-10-24 17:04:08,660 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:04:08,661 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c [2018-10-24 17:04:08,715 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4385b8dc4/efdd28ea1a4a41f09de60cbea1f0fb9d/FLAGce8c166bb [2018-10-24 17:04:08,737 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4385b8dc4/efdd28ea1a4a41f09de60cbea1f0fb9d [2018-10-24 17:04:08,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:04:08,752 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:04:08,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:04:08,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:04:08,757 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:04:08,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:04:08" (1/1) ... [2018-10-24 17:04:08,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:08, skipping insertion in model container [2018-10-24 17:04:08,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:04:08" (1/1) ... [2018-10-24 17:04:08,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:04:09,016 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:04:10,836 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:04:10,841 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:04:11,905 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:04:11,970 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:04:11,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11 WrapperNode [2018-10-24 17:04:11,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:04:11,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:04:11,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:04:11,972 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:04:11,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (1/1) ... [2018-10-24 17:04:12,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (1/1) ... [2018-10-24 17:04:13,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:04:13,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:04:13,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:04:13,128 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:04:13,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (1/1) ... [2018-10-24 17:04:13,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (1/1) ... [2018-10-24 17:04:13,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (1/1) ... [2018-10-24 17:04:13,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (1/1) ... [2018-10-24 17:04:13,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (1/1) ... [2018-10-24 17:04:13,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (1/1) ... [2018-10-24 17:04:13,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (1/1) ... [2018-10-24 17:04:14,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:04:14,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:04:14,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:04:14,130 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:04:14,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (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 17:04:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:04:14,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:04:14,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:04:31,600 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:04:31,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:04:31 BoogieIcfgContainer [2018-10-24 17:04:31,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:04:31,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:04:31,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:04:31,606 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:04:31,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:04:08" (1/3) ... [2018-10-24 17:04:31,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef8c800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:04:31, skipping insertion in model container [2018-10-24 17:04:31,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:04:11" (2/3) ... [2018-10-24 17:04:31,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef8c800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:04:31, skipping insertion in model container [2018-10-24 17:04:31,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:04:31" (3/3) ... [2018-10-24 17:04:31,610 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label15_true-unreach-call.c [2018-10-24 17:04:31,620 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:04:31,632 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:04:31,649 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:04:31,696 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:04:31,697 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:04:31,697 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:04:31,697 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:04:31,697 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:04:31,697 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:04:31,697 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:04:31,697 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:04:31,697 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:04:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:04:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 17:04:31,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:31,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:31,764 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:31,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:31,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1281577798, now seen corresponding path program 1 times [2018-10-24 17:04:31,773 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:31,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:31,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:31,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:31,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:32,308 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 17:04:32,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:32,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:04:32,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:32,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:32,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:32,335 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:04:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:56,169 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-24 17:04:56,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:56,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-24 17:04:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:56,231 INFO L225 Difference]: With dead ends: 6324 [2018-10-24 17:04:56,232 INFO L226 Difference]: Without dead ends: 4568 [2018-10-24 17:04:56,243 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 [2018-10-24 17:04:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-24 17:04:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-24 17:04:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-24 17:04:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-24 17:04:56,481 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 59 [2018-10-24 17:04:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:56,482 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-24 17:04:56,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:56,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-24 17:04:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 17:04:56,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:56,489 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, 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] [2018-10-24 17:04:56,489 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:56,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:56,490 INFO L82 PathProgramCache]: Analyzing trace with hash -336458499, now seen corresponding path program 1 times [2018-10-24 17:04:56,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:56,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:56,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:56,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:56,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:56,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:56,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:04:56,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:56,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:56,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:56,761 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-24 17:05:26,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:26,933 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-24 17:05:26,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:26,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2018-10-24 17:05:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:26,999 INFO L225 Difference]: With dead ends: 17544 [2018-10-24 17:05:26,999 INFO L226 Difference]: Without dead ends: 12983 [2018-10-24 17:05:27,008 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 17:05:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-24 17:05:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 8662. [2018-10-24 17:05:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2018-10-24 17:05:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 13841 transitions. [2018-10-24 17:05:27,201 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 13841 transitions. Word has length 137 [2018-10-24 17:05:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:27,201 INFO L481 AbstractCegarLoop]: Abstraction has 8662 states and 13841 transitions. [2018-10-24 17:05:27,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:27,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 13841 transitions. [2018-10-24 17:05:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-24 17:05:27,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:27,216 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, 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] [2018-10-24 17:05:27,216 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:27,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:27,216 INFO L82 PathProgramCache]: Analyzing trace with hash 159540445, now seen corresponding path program 1 times [2018-10-24 17:05:27,217 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:27,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:27,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:27,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:27,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:05:27,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:27,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:05:27,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:05:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:05:27,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:27,589 INFO L87 Difference]: Start difference. First operand 8662 states and 13841 transitions. Second operand 4 states. [2018-10-24 17:05:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:46,869 INFO L93 Difference]: Finished difference Result 33991 states and 54526 transitions. [2018-10-24 17:05:46,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:46,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-10-24 17:05:46,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:46,964 INFO L225 Difference]: With dead ends: 33991 [2018-10-24 17:05:46,964 INFO L226 Difference]: Without dead ends: 25331 [2018-10-24 17:05:46,982 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 17:05:47,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25331 states. [2018-10-24 17:05:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25331 to 25321. [2018-10-24 17:05:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25321 states. [2018-10-24 17:05:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25321 states to 25321 states and 34467 transitions. [2018-10-24 17:05:47,608 INFO L78 Accepts]: Start accepts. Automaton has 25321 states and 34467 transitions. Word has length 157 [2018-10-24 17:05:47,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:47,610 INFO L481 AbstractCegarLoop]: Abstraction has 25321 states and 34467 transitions. [2018-10-24 17:05:47,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:47,610 INFO L276 IsEmpty]: Start isEmpty. Operand 25321 states and 34467 transitions. [2018-10-24 17:05:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 17:05:47,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:47,613 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, 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] [2018-10-24 17:05:47,613 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:47,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:47,614 INFO L82 PathProgramCache]: Analyzing trace with hash -706708730, now seen corresponding path program 1 times [2018-10-24 17:05:47,614 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:47,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:47,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:47,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:47,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:47,983 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:05:48,673 WARN L179 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:05:48,872 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:05:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:05:48,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:48,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:05:48,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:05:48,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:05:48,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:05:48,937 INFO L87 Difference]: Start difference. First operand 25321 states and 34467 transitions. Second operand 6 states. [2018-10-24 17:06:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:17,601 INFO L93 Difference]: Finished difference Result 82151 states and 109854 transitions. [2018-10-24 17:06:17,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:06:17,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-24 17:06:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:17,731 INFO L225 Difference]: With dead ends: 82151 [2018-10-24 17:06:17,732 INFO L226 Difference]: Without dead ends: 56832 [2018-10-24 17:06:17,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:06:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56832 states. [2018-10-24 17:06:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56832 to 55390. [2018-10-24 17:06:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55390 states. [2018-10-24 17:06:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55390 states to 55390 states and 72762 transitions. [2018-10-24 17:06:18,778 INFO L78 Accepts]: Start accepts. Automaton has 55390 states and 72762 transitions. Word has length 164 [2018-10-24 17:06:18,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:18,778 INFO L481 AbstractCegarLoop]: Abstraction has 55390 states and 72762 transitions. [2018-10-24 17:06:18,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:06:18,779 INFO L276 IsEmpty]: Start isEmpty. Operand 55390 states and 72762 transitions. [2018-10-24 17:06:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-24 17:06:18,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:18,787 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, 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] [2018-10-24 17:06:18,788 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:18,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:18,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1700977312, now seen corresponding path program 1 times [2018-10-24 17:06:18,788 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:18,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:18,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:18,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:18,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:06:19,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:19,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:06:19,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:19,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:19,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:19,262 INFO L87 Difference]: Start difference. First operand 55390 states and 72762 transitions. Second operand 4 states. [2018-10-24 17:06:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:38,652 INFO L93 Difference]: Finished difference Result 139616 states and 182676 transitions. [2018-10-24 17:06:38,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:38,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 295 [2018-10-24 17:06:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:38,770 INFO L225 Difference]: With dead ends: 139616 [2018-10-24 17:06:38,771 INFO L226 Difference]: Without dead ends: 78762 [2018-10-24 17:06:38,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 17:06:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78762 states. [2018-10-24 17:06:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78762 to 78629. [2018-10-24 17:06:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78629 states. [2018-10-24 17:06:39,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78629 states to 78629 states and 97485 transitions. [2018-10-24 17:06:39,736 INFO L78 Accepts]: Start accepts. Automaton has 78629 states and 97485 transitions. Word has length 295 [2018-10-24 17:06:39,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:39,736 INFO L481 AbstractCegarLoop]: Abstraction has 78629 states and 97485 transitions. [2018-10-24 17:06:39,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 78629 states and 97485 transitions. [2018-10-24 17:06:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-10-24 17:06:39,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:39,757 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:06:39,757 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:39,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:39,758 INFO L82 PathProgramCache]: Analyzing trace with hash -358381557, now seen corresponding path program 1 times [2018-10-24 17:06:39,758 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:39,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:39,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:39,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:39,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:40,301 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 17:06:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-10-24 17:06:40,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:40,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:06:40,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:40,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:40,581 INFO L87 Difference]: Start difference. First operand 78629 states and 97485 transitions. Second operand 4 states. [2018-10-24 17:06:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:56,732 INFO L93 Difference]: Finished difference Result 155888 states and 193590 transitions. [2018-10-24 17:06:56,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:56,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 603 [2018-10-24 17:06:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:56,836 INFO L225 Difference]: With dead ends: 155888 [2018-10-24 17:06:56,837 INFO L226 Difference]: Without dead ends: 78627 [2018-10-24 17:06:56,893 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 [2018-10-24 17:06:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78627 states. [2018-10-24 17:06:58,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78627 to 78619. [2018-10-24 17:06:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78619 states. [2018-10-24 17:06:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78619 states to 78619 states and 88182 transitions. [2018-10-24 17:06:58,184 INFO L78 Accepts]: Start accepts. Automaton has 78619 states and 88182 transitions. Word has length 603 [2018-10-24 17:06:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:58,185 INFO L481 AbstractCegarLoop]: Abstraction has 78619 states and 88182 transitions. [2018-10-24 17:06:58,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 78619 states and 88182 transitions. [2018-10-24 17:06:58,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-10-24 17:06:58,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:58,204 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:06:58,205 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:58,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:58,205 INFO L82 PathProgramCache]: Analyzing trace with hash -5337463, now seen corresponding path program 1 times [2018-10-24 17:06:58,205 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:58,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:58,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:58,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:58,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:59,281 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-24 17:06:59,984 WARN L179 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-24 17:07:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 419 proven. 4 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-24 17:07:00,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:07:00,546 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:07:00,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:00,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:07:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-24 17:07:01,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:07:01,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:07:01,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:07:01,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:07:01,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:07:01,140 INFO L87 Difference]: Start difference. First operand 78619 states and 88182 transitions. Second operand 5 states. [2018-10-24 17:07:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:27,185 INFO L93 Difference]: Finished difference Result 174997 states and 195231 transitions. [2018-10-24 17:07:27,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:07:27,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 610 [2018-10-24 17:07:27,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:27,306 INFO L225 Difference]: With dead ends: 174997 [2018-10-24 17:07:27,306 INFO L226 Difference]: Without dead ends: 88173 [2018-10-24 17:07:27,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 610 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:07:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88173 states. [2018-10-24 17:07:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88173 to 86805. [2018-10-24 17:07:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86805 states. [2018-10-24 17:07:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86805 states to 86805 states and 92924 transitions. [2018-10-24 17:07:29,305 INFO L78 Accepts]: Start accepts. Automaton has 86805 states and 92924 transitions. Word has length 610 [2018-10-24 17:07:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:29,305 INFO L481 AbstractCegarLoop]: Abstraction has 86805 states and 92924 transitions. [2018-10-24 17:07:29,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:07:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 86805 states and 92924 transitions. [2018-10-24 17:07:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2018-10-24 17:07:29,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:29,318 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:07:29,319 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:29,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:29,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1094554062, now seen corresponding path program 1 times [2018-10-24 17:07:29,320 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:29,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:29,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:29,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:29,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-10-24 17:07:30,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:30,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:07:30,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:07:30,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:07:30,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:07:30,361 INFO L87 Difference]: Start difference. First operand 86805 states and 92924 transitions. Second operand 3 states. [2018-10-24 17:07:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:42,926 INFO L93 Difference]: Finished difference Result 236479 states and 254054 transitions. [2018-10-24 17:07:42,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:07:42,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 855 [2018-10-24 17:07:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:43,101 INFO L225 Difference]: With dead ends: 236479 [2018-10-24 17:07:43,101 INFO L226 Difference]: Without dead ends: 151042 [2018-10-24 17:07:43,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:07:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151042 states. [2018-10-24 17:07:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151042 to 151011. [2018-10-24 17:07:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151011 states. [2018-10-24 17:07:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151011 states to 151011 states and 161210 transitions. [2018-10-24 17:07:44,478 INFO L78 Accepts]: Start accepts. Automaton has 151011 states and 161210 transitions. Word has length 855 [2018-10-24 17:07:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:44,479 INFO L481 AbstractCegarLoop]: Abstraction has 151011 states and 161210 transitions. [2018-10-24 17:07:44,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:07:44,480 INFO L276 IsEmpty]: Start isEmpty. Operand 151011 states and 161210 transitions. [2018-10-24 17:07:44,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2018-10-24 17:07:44,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:44,514 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:44,514 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:44,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:44,515 INFO L82 PathProgramCache]: Analyzing trace with hash -325758145, now seen corresponding path program 1 times [2018-10-24 17:07:44,515 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:44,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:44,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:44,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:44,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 780 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:07:47,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:47,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:07:47,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:47,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:47,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:47,667 INFO L87 Difference]: Start difference. First operand 151011 states and 161210 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 17:08:01,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:08:01,312 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:08:01,318 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:08:01,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:08:01 BoogieIcfgContainer [2018-10-24 17:08:01,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:08:01,319 INFO L168 Benchmark]: Toolchain (without parser) took 232568.63 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -817.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 17:08:01,320 INFO L168 Benchmark]: CDTParser took 0.22 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 17:08:01,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3218.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:08:01,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 1156.16 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 862.5 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:08:01,323 INFO L168 Benchmark]: Boogie Preprocessor took 1001.72 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 100.8 MB). Peak memory consumption was 100.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:08:01,324 INFO L168 Benchmark]: RCFGBuilder took 17471.38 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 281.5 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -392.3 MB). Peak memory consumption was 859.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:08:01,325 INFO L168 Benchmark]: TraceAbstraction took 209716.02 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 909.1 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 218.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 17:08:01,330 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3218.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1156.16 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 862.5 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1001.72 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 100.8 MB). Peak memory consumption was 100.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17471.38 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 281.5 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -392.3 MB). Peak memory consumption was 859.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209716.02 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 909.1 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 218.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was constructing difference of abstraction (151011states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (214346 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 209.6s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 190.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12491 SDtfs, 37403 SDslu, 3343 SDs, 0 SdLazy, 77046 SolverSat, 18331 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 163.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 655 GetRequests, 623 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151011occurred 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: 7.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 7318 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 4643 NumberOfCodeBlocks, 4643 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4633 ConstructedInterpolants, 0 QuantifiedInterpolants, 7949695 SizeOfPredicates, 5 NumberOfNonLiveVariables, 721 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3600/3604 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown