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_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:07:44,443 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:07:44,445 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:07:44,462 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:07:44,462 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:07:44,465 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:07:44,466 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:07:44,468 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:07:44,469 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:07:44,470 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:07:44,471 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:07:44,471 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:07:44,472 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:07:44,473 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:07:44,474 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:07:44,475 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:07:44,476 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:07:44,479 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:07:44,484 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:07:44,489 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:07:44,490 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:07:44,491 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:07:44,497 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:07:44,497 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:07:44,497 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:07:44,500 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:07:44,501 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:07:44,502 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:07:44,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:07:44,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:07:44,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:07:44,505 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 22:07:44,507 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 22:07:44,523 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:07:44,523 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:07:44,524 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:07:44,525 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:07:44,525 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:07:44,525 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:07:44,526 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:07:44,526 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:07:44,526 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:07:44,526 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:07:44,527 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:07:44,527 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:07:44,527 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:07:44,527 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:07:44,527 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:07:44,528 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:07:44,528 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:07:44,528 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:07:44,528 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:07:44,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:07:44,529 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:07:44,529 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:07:44,529 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:07:44,529 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:07:44,529 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:07:44,530 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:07:44,530 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:07:44,530 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:07:44,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:07:44,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:07:44,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:07:44,595 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:07:44,596 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:07:44,596 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-10-26 22:07:44,664 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3ef451a3f/e8c9d9ec0cb64e03968d6c8ce5fe5107/FLAG2f7fe365f [2018-10-26 22:07:45,592 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:07:45,593 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-10-26 22:07:45,645 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3ef451a3f/e8c9d9ec0cb64e03968d6c8ce5fe5107/FLAG2f7fe365f [2018-10-26 22:07:45,666 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3ef451a3f/e8c9d9ec0cb64e03968d6c8ce5fe5107 [2018-10-26 22:07:45,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:07:45,681 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:07:45,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:07:45,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:07:45,687 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:07:45,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:07:45" (1/1) ... [2018-10-26 22:07:45,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd4c4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:45, skipping insertion in model container [2018-10-26 22:07:45,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:07:45" (1/1) ... [2018-10-26 22:07:45,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:07:45,952 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:07:47,974 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:07:47,980 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:07:49,120 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:07:49,173 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:07:49,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49 WrapperNode [2018-10-26 22:07:49,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:07:49,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:07:49,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:07:49,175 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:07:49,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (1/1) ... [2018-10-26 22:07:49,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (1/1) ... [2018-10-26 22:07:50,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:07:50,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:07:50,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:07:50,349 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:07:50,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (1/1) ... [2018-10-26 22:07:50,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (1/1) ... [2018-10-26 22:07:50,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (1/1) ... [2018-10-26 22:07:50,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (1/1) ... [2018-10-26 22:07:50,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (1/1) ... [2018-10-26 22:07:50,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (1/1) ... [2018-10-26 22:07:51,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (1/1) ... [2018-10-26 22:07:51,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:07:51,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:07:51,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:07:51,175 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:07:51,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (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 22:07:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:07:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:07:51,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:08:08,671 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:08:08,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:08:08 BoogieIcfgContainer [2018-10-26 22:08:08,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:08:08,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:08:08,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:08:08,677 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:08:08,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:07:45" (1/3) ... [2018-10-26 22:08:08,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f59f690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:08:08, skipping insertion in model container [2018-10-26 22:08:08,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:49" (2/3) ... [2018-10-26 22:08:08,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f59f690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:08:08, skipping insertion in model container [2018-10-26 22:08:08,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:08:08" (3/3) ... [2018-10-26 22:08:08,681 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label12_true-unreach-call.c [2018-10-26 22:08:08,692 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:08:08,705 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:08:08,724 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:08:08,779 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:08:08,779 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:08:08,780 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:08:08,780 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:08:08,780 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:08:08,780 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:08:08,780 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:08:08,780 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:08:08,781 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:08:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:08:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 22:08:08,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:08:08,845 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] [2018-10-26 22:08:08,848 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:08:08,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:08:08,856 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-10-26 22:08:08,859 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:08:08,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:08:08,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:08,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:08,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:09,477 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 22:08:09,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:08:09,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:08:09,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:08:09,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:08:09,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:09,508 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 22:08:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:08:32,432 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-10-26 22:08:32,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:08:32,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-26 22:08:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:08:32,503 INFO L225 Difference]: With dead ends: 6419 [2018-10-26 22:08:32,503 INFO L226 Difference]: Without dead ends: 4663 [2018-10-26 22:08:32,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-10-26 22:08:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-10-26 22:08:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-10-26 22:08:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-10-26 22:08:32,746 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 45 [2018-10-26 22:08:32,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:08:32,747 INFO L481 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-10-26 22:08:32,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:08:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-10-26 22:08:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-26 22:08:32,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:08:32,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:32,759 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:08:32,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:08:32,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1565483384, now seen corresponding path program 1 times [2018-10-26 22:08:32,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:08:32,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:08:32,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:32,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:32,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:08:33,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:08:33,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:08:33,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:08:33,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:08:33,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:33,133 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-10-26 22:09:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:09:01,394 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-10-26 22:09:01,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:09:01,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-26 22:09:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:09:01,466 INFO L225 Difference]: With dead ends: 17564 [2018-10-26 22:09:01,466 INFO L226 Difference]: Without dead ends: 12993 [2018-10-26 22:09:01,475 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 22:09:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-10-26 22:09:01,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-10-26 22:09:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-10-26 22:09:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-10-26 22:09:01,698 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 129 [2018-10-26 22:09:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:09:01,699 INFO L481 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-10-26 22:09:01,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:09:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-10-26 22:09:01,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-26 22:09:01,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:09:01,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:01,710 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:09:01,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:09:01,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1180457619, now seen corresponding path program 1 times [2018-10-26 22:09:01,711 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:09:01,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:09:01,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:01,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:01,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:09:02,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:09:02,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:09:02,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:09:02,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:09:02,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:09:02,078 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-10-26 22:09:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:09:26,947 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-10-26 22:09:26,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:09:26,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2018-10-26 22:09:26,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:09:27,030 INFO L225 Difference]: With dead ends: 34022 [2018-10-26 22:09:27,030 INFO L226 Difference]: Without dead ends: 25352 [2018-10-26 22:09:27,043 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 22:09:27,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-10-26 22:09:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-10-26 22:09:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-10-26 22:09:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-10-26 22:09:27,437 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 169 [2018-10-26 22:09:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:09:27,438 INFO L481 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-10-26 22:09:27,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:09:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-10-26 22:09:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-26 22:09:27,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:09:27,445 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 22:09:27,446 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:09:27,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:09:27,446 INFO L82 PathProgramCache]: Analyzing trace with hash 352749820, now seen corresponding path program 1 times [2018-10-26 22:09:27,446 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:09:27,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:09:27,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:27,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:27,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-26 22:09:27,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:09:27,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:09:27,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:09:27,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:09:27,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:09:27,836 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-10-26 22:09:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:09:44,545 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-10-26 22:09:44,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:09:44,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 353 [2018-10-26 22:09:44,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:09:44,671 INFO L225 Difference]: With dead ends: 93031 [2018-10-26 22:09:44,672 INFO L226 Difference]: Without dead ends: 67695 [2018-10-26 22:09:44,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:09:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-10-26 22:09:45,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-10-26 22:09:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-10-26 22:09:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-10-26 22:09:45,616 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 353 [2018-10-26 22:09:45,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:09:45,617 INFO L481 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-10-26 22:09:45,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:09:45,618 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-10-26 22:09:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-26 22:09:45,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:09:45,632 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:45,632 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:09:45,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:09:45,633 INFO L82 PathProgramCache]: Analyzing trace with hash 336374991, now seen corresponding path program 1 times [2018-10-26 22:09:45,633 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:09:45,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:09:45,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:45,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:45,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-10-26 22:09:46,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:09:46,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:09:46,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:09:46,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:09:46,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:09:46,571 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-10-26 22:10:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:10:07,856 INFO L93 Difference]: Finished difference Result 235259 states and 309486 transitions. [2018-10-26 22:10:07,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:10:07,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 454 [2018-10-26 22:10:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:10:08,113 INFO L225 Difference]: With dead ends: 235259 [2018-10-26 22:10:08,113 INFO L226 Difference]: Without dead ends: 170305 [2018-10-26 22:10:08,171 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 22:10:08,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-10-26 22:10:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168873. [2018-10-26 22:10:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168873 states. [2018-10-26 22:10:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168873 states to 168873 states and 202433 transitions. [2018-10-26 22:10:09,751 INFO L78 Accepts]: Start accepts. Automaton has 168873 states and 202433 transitions. Word has length 454 [2018-10-26 22:10:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:10:09,751 INFO L481 AbstractCegarLoop]: Abstraction has 168873 states and 202433 transitions. [2018-10-26 22:10:09,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:10:09,752 INFO L276 IsEmpty]: Start isEmpty. Operand 168873 states and 202433 transitions. [2018-10-26 22:10:09,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2018-10-26 22:10:09,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:10:09,804 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:09,804 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:10:09,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:10:09,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1340196843, now seen corresponding path program 1 times [2018-10-26 22:10:09,805 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:10:09,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:10:09,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:09,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:10:09,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:10:11,118 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-26 22:10:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-10-26 22:10:12,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:10:12,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:10:12,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:10:12,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:10:12,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:10:12,092 INFO L87 Difference]: Start difference. First operand 168873 states and 202433 transitions. Second operand 7 states. [2018-10-26 22:10:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:10:50,275 INFO L93 Difference]: Finished difference Result 377375 states and 447271 transitions. [2018-10-26 22:10:50,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:10:50,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1007 [2018-10-26 22:10:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:10:50,592 INFO L225 Difference]: With dead ends: 377375 [2018-10-26 22:10:50,593 INFO L226 Difference]: Without dead ends: 209870 [2018-10-26 22:10:50,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:10:50,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209870 states. [2018-10-26 22:10:53,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209870 to 205764. [2018-10-26 22:10:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205764 states. [2018-10-26 22:10:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205764 states to 205764 states and 240850 transitions. [2018-10-26 22:10:53,227 INFO L78 Accepts]: Start accepts. Automaton has 205764 states and 240850 transitions. Word has length 1007 [2018-10-26 22:10:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:10:53,228 INFO L481 AbstractCegarLoop]: Abstraction has 205764 states and 240850 transitions. [2018-10-26 22:10:53,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:10:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 205764 states and 240850 transitions. [2018-10-26 22:10:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2018-10-26 22:10:53,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:10:53,259 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:10:53,259 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:10:53,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:10:53,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2033357584, now seen corresponding path program 1 times [2018-10-26 22:10:53,260 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:10:53,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:10:53,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:53,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:10:53,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:10:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-26 22:10:55,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:10:55,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:10:55,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:10:55,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:10:55,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:55,650 INFO L87 Difference]: Start difference. First operand 205764 states and 240850 transitions. Second operand 4 states. [2018-10-26 22:11:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:11:11,966 INFO L93 Difference]: Finished difference Result 474364 states and 558603 transitions. [2018-10-26 22:11:11,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:11:11,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1026 [2018-10-26 22:11:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:11:12,348 INFO L225 Difference]: With dead ends: 474364 [2018-10-26 22:11:12,348 INFO L226 Difference]: Without dead ends: 265863 [2018-10-26 22:11:12,469 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 22:11:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265863 states. [2018-10-26 22:11:15,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265863 to 265852. [2018-10-26 22:11:15,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265852 states. [2018-10-26 22:11:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265852 states to 265852 states and 296554 transitions. [2018-10-26 22:11:15,922 INFO L78 Accepts]: Start accepts. Automaton has 265852 states and 296554 transitions. Word has length 1026 [2018-10-26 22:11:15,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:11:15,924 INFO L481 AbstractCegarLoop]: Abstraction has 265852 states and 296554 transitions. [2018-10-26 22:11:15,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:11:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 265852 states and 296554 transitions. [2018-10-26 22:11:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2018-10-26 22:11:15,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:11:15,945 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:11:15,945 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:11:15,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:11:15,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2116416662, now seen corresponding path program 1 times [2018-10-26 22:11:15,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:11:15,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:11:15,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:15,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:11:15,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:11:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-10-26 22:11:18,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:11:18,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:11:18,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:11:18,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:11:18,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:11:18,327 INFO L87 Difference]: Start difference. First operand 265852 states and 296554 transitions. Second operand 3 states. [2018-10-26 22:11:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:11:34,769 INFO L93 Difference]: Finished difference Result 621859 states and 698847 transitions. [2018-10-26 22:11:34,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:11:34,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1037 [2018-10-26 22:11:34,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:11:35,209 INFO L225 Difference]: With dead ends: 621859 [2018-10-26 22:11:35,209 INFO L226 Difference]: Without dead ends: 357375 [2018-10-26 22:11:35,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:11:35,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357375 states. Received shutdown request... [2018-10-26 22:11:41,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357375 to 317758. [2018-10-26 22:11:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317758 states. [2018-10-26 22:11:41,013 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:11:41,019 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:11:41,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:11:41 BoogieIcfgContainer [2018-10-26 22:11:41,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:11:41,020 INFO L168 Benchmark]: Toolchain (without parser) took 235340.06 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 385.9 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-26 22:11:41,021 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. [2018-10-26 22:11:41,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3491.89 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. [2018-10-26 22:11:41,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 1174.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 866.1 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-26 22:11:41,024 INFO L168 Benchmark]: Boogie Preprocessor took 825.20 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: 100.4 MB). Peak memory consumption was 100.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:11:41,025 INFO L168 Benchmark]: RCFGBuilder took 17497.79 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.5 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -383.1 MB). Peak memory consumption was 839.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:11:41,026 INFO L168 Benchmark]: TraceAbstraction took 212346.05 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 720.4 MB). Free memory was 2.4 GB in the beginning and 1.0 GB in the end (delta: 1.4 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-26 22:11:41,030 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 3491.89 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 1174.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 866.1 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 825.20 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: 100.4 MB). Peak memory consumption was 100.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17497.79 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.5 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -383.1 MB). Peak memory consumption was 839.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212346.05 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 720.4 MB). Free memory was 2.4 GB in the beginning and 1.0 GB in the end (delta: 1.4 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 212.2s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 187.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11342 SDtfs, 31990 SDslu, 3555 SDs, 0 SdLazy, 78253 SolverSat, 19325 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 154.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265852occurred in iteration=7, 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: 14.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 12713 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 4220 NumberOfCodeBlocks, 4220 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 4212 ConstructedInterpolants, 0 QuantifiedInterpolants, 7033042 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 3325/3325 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown