java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem18_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:48:15,531 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:48:15,533 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:48:15,545 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:48:15,545 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:48:15,546 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:48:15,548 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:48:15,549 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:48:15,551 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:48:15,552 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:48:15,553 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:48:15,553 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:48:15,554 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:48:15,555 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:48:15,556 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:48:15,557 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:48:15,558 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:48:15,560 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:48:15,562 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:48:15,563 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:48:15,564 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:48:15,566 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:48:15,568 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:48:15,568 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:48:15,569 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:48:15,570 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:48:15,570 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:48:15,571 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:48:15,572 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:48:15,573 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:48:15,573 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:48:15,574 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:48:15,577 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:48:15,595 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:48:15,596 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:48:15,597 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:48:15,597 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:48:15,598 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:48:15,598 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:48:15,598 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:48:15,598 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:48:15,598 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:48:15,601 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:48:15,602 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:48:15,602 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:48:15,602 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:48:15,602 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:48:15,602 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:48:15,603 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:48:15,603 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:48:15,603 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:48:15,603 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:48:15,603 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:48:15,604 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:48:15,604 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:48:15,604 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:48:15,604 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:48:15,604 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:48:15,605 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:48:15,605 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:48:15,605 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:48:15,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:48:15,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:48:15,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:48:15,678 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:48:15,679 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:48:15,679 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-11-06 21:48:15,750 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0fa3dd4e/411063cc0ca14ea5a2f1820146ac5458/FLAGaa3b9c8ec [2018-11-06 21:48:16,460 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:48:16,461 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-11-06 21:48:16,485 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0fa3dd4e/411063cc0ca14ea5a2f1820146ac5458/FLAGaa3b9c8ec [2018-11-06 21:48:16,502 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0fa3dd4e/411063cc0ca14ea5a2f1820146ac5458 [2018-11-06 21:48:16,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:48:16,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:48:16,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:48:16,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:48:16,522 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:48:16,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:48:16" (1/1) ... [2018-11-06 21:48:16,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0ffffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:16, skipping insertion in model container [2018-11-06 21:48:16,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:48:16" (1/1) ... [2018-11-06 21:48:16,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:48:16,663 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:48:17,740 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:48:17,745 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:48:18,201 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:48:18,230 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:48:18,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18 WrapperNode [2018-11-06 21:48:18,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:48:18,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:48:18,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:48:18,237 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:48:18,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... [2018-11-06 21:48:18,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... [2018-11-06 21:48:18,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:48:18,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:48:18,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:48:18,681 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:48:18,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... [2018-11-06 21:48:18,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... [2018-11-06 21:48:18,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... [2018-11-06 21:48:18,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... [2018-11-06 21:48:18,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... [2018-11-06 21:48:18,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... [2018-11-06 21:48:18,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... [2018-11-06 21:48:18,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:48:18,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:48:18,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:48:18,916 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:48:18,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:48:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:48:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:48:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:48:27,867 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:48:27,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:48:27 BoogieIcfgContainer [2018-11-06 21:48:27,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:48:27,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:48:27,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:48:27,873 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:48:27,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:48:16" (1/3) ... [2018-11-06 21:48:27,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda89c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:48:27, skipping insertion in model container [2018-11-06 21:48:27,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:48:18" (2/3) ... [2018-11-06 21:48:27,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda89c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:48:27, skipping insertion in model container [2018-11-06 21:48:27,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:48:27" (3/3) ... [2018-11-06 21:48:27,877 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label04_true-unreach-call.c [2018-11-06 21:48:27,888 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:48:27,899 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:48:27,917 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:48:27,959 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:48:27,960 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:48:27,960 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:48:27,960 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:48:27,961 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:48:27,961 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:48:27,961 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:48:27,961 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:48:27,961 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:48:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-11-06 21:48:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-06 21:48:28,008 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:48:28,009 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] [2018-11-06 21:48:28,012 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:48:28,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:48:28,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-11-06 21:48:28,021 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:48:28,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:48:28,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:28,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:48:28,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:48:28,500 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-06 21:48:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:48:28,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:48:28,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:48:28,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:48:28,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:48:28,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:48:28,848 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 6 states. [2018-11-06 21:48:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:48:45,761 INFO L93 Difference]: Finished difference Result 4292 states and 8414 transitions. [2018-11-06 21:48:45,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 21:48:45,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2018-11-06 21:48:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:48:45,809 INFO L225 Difference]: With dead ends: 4292 [2018-11-06 21:48:45,810 INFO L226 Difference]: Without dead ends: 3521 [2018-11-06 21:48:45,818 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:48:45,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2018-11-06 21:48:45,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 2828. [2018-11-06 21:48:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2828 states. [2018-11-06 21:48:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 4092 transitions. [2018-11-06 21:48:45,980 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 4092 transitions. Word has length 53 [2018-11-06 21:48:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:48:45,981 INFO L480 AbstractCegarLoop]: Abstraction has 2828 states and 4092 transitions. [2018-11-06 21:48:45,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:48:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 4092 transitions. [2018-11-06 21:48:45,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-06 21:48:45,991 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:48:45,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:48:45,993 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:48:45,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:48:45,994 INFO L82 PathProgramCache]: Analyzing trace with hash -159985225, now seen corresponding path program 1 times [2018-11-06 21:48:45,994 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:48:45,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:48:45,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:45,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:48:45,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:48:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:48:46,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:48:46,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:48:46,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:48:46,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:48:46,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:48:46,642 INFO L87 Difference]: Start difference. First operand 2828 states and 4092 transitions. Second operand 5 states. [2018-11-06 21:48:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:48:57,867 INFO L93 Difference]: Finished difference Result 8418 states and 12613 transitions. [2018-11-06 21:48:57,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:48:57,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-11-06 21:48:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:48:57,894 INFO L225 Difference]: With dead ends: 8418 [2018-11-06 21:48:57,895 INFO L226 Difference]: Without dead ends: 5592 [2018-11-06 21:48:57,899 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:48:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2018-11-06 21:48:57,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5592. [2018-11-06 21:48:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5592 states. [2018-11-06 21:48:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7127 transitions. [2018-11-06 21:48:58,005 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7127 transitions. Word has length 147 [2018-11-06 21:48:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:48:58,006 INFO L480 AbstractCegarLoop]: Abstraction has 5592 states and 7127 transitions. [2018-11-06 21:48:58,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:48:58,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7127 transitions. [2018-11-06 21:48:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-06 21:48:58,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:48:58,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:48:58,019 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:48:58,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:48:58,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1116212699, now seen corresponding path program 1 times [2018-11-06 21:48:58,019 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:48:58,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:48:58,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:58,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:48:58,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:48:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:48:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-06 21:48:58,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:48:58,456 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:48:58,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:48:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:48:58,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:48:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:48:58,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:48:58,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:48:58,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:48:58,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:48:58,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:48:58,662 INFO L87 Difference]: Start difference. First operand 5592 states and 7127 transitions. Second operand 4 states. [2018-11-06 21:49:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:08,007 INFO L93 Difference]: Finished difference Result 17417 states and 23373 transitions. [2018-11-06 21:49:08,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:49:08,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2018-11-06 21:49:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:08,067 INFO L225 Difference]: With dead ends: 17417 [2018-11-06 21:49:08,067 INFO L226 Difference]: Without dead ends: 12518 [2018-11-06 21:49:08,075 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12518 states. [2018-11-06 21:49:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12518 to 7665. [2018-11-06 21:49:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7665 states. [2018-11-06 21:49:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7665 states to 7665 states and 9557 transitions. [2018-11-06 21:49:08,242 INFO L78 Accepts]: Start accepts. Automaton has 7665 states and 9557 transitions. Word has length 236 [2018-11-06 21:49:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:08,243 INFO L480 AbstractCegarLoop]: Abstraction has 7665 states and 9557 transitions. [2018-11-06 21:49:08,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:49:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7665 states and 9557 transitions. [2018-11-06 21:49:08,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-11-06 21:49:08,250 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:08,250 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:49:08,251 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:08,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:08,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1085335796, now seen corresponding path program 1 times [2018-11-06 21:49:08,251 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:08,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:08,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:08,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:08,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:49:08,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:49:08,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:49:08,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:49:08,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:49:08,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:08,694 INFO L87 Difference]: Start difference. First operand 7665 states and 9557 transitions. Second operand 4 states. [2018-11-06 21:49:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:14,786 INFO L93 Difference]: Finished difference Result 17401 states and 21937 transitions. [2018-11-06 21:49:14,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:49:14,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2018-11-06 21:49:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:14,824 INFO L225 Difference]: With dead ends: 17401 [2018-11-06 21:49:14,824 INFO L226 Difference]: Without dead ends: 9046 [2018-11-06 21:49:14,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:14,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9046 states. [2018-11-06 21:49:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9046 to 9046. [2018-11-06 21:49:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9046 states. [2018-11-06 21:49:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9046 states to 9046 states and 10795 transitions. [2018-11-06 21:49:14,972 INFO L78 Accepts]: Start accepts. Automaton has 9046 states and 10795 transitions. Word has length 306 [2018-11-06 21:49:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:14,973 INFO L480 AbstractCegarLoop]: Abstraction has 9046 states and 10795 transitions. [2018-11-06 21:49:14,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:49:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 9046 states and 10795 transitions. [2018-11-06 21:49:14,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-11-06 21:49:14,979 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:14,979 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:49:14,980 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:14,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:14,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1773253513, now seen corresponding path program 1 times [2018-11-06 21:49:14,980 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:14,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:14,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:14,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:14,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:15,507 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 21:49:15,954 WARN L179 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-11-06 21:49:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 200 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:49:16,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:49:16,202 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:49:16,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:16,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:49:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-11-06 21:49:16,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:49:16,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-11-06 21:49:16,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:49:16,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:49:16,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:49:16,484 INFO L87 Difference]: Start difference. First operand 9046 states and 10795 transitions. Second operand 6 states. [2018-11-06 21:49:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:25,987 INFO L93 Difference]: Finished difference Result 29848 states and 35478 transitions. [2018-11-06 21:49:25,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:49:25,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2018-11-06 21:49:25,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:26,030 INFO L225 Difference]: With dead ends: 29848 [2018-11-06 21:49:26,030 INFO L226 Difference]: Without dead ends: 18032 [2018-11-06 21:49:26,045 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 339 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:49:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18032 states. [2018-11-06 21:49:26,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18032 to 13188. [2018-11-06 21:49:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13188 states. [2018-11-06 21:49:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 14343 transitions. [2018-11-06 21:49:26,263 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 14343 transitions. Word has length 340 [2018-11-06 21:49:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:26,264 INFO L480 AbstractCegarLoop]: Abstraction has 13188 states and 14343 transitions. [2018-11-06 21:49:26,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:49:26,264 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 14343 transitions. [2018-11-06 21:49:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2018-11-06 21:49:26,302 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:26,303 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:49:26,304 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:26,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:26,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1023982483, now seen corresponding path program 1 times [2018-11-06 21:49:26,304 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:26,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:26,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:26,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:26,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2018-11-06 21:49:27,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:49:27,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:49:27,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:49:27,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:49:27,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:27,392 INFO L87 Difference]: Start difference. First operand 13188 states and 14343 transitions. Second operand 4 states. [2018-11-06 21:49:32,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:32,724 INFO L93 Difference]: Finished difference Result 45031 states and 49532 transitions. [2018-11-06 21:49:32,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:49:32,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1036 [2018-11-06 21:49:32,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:32,785 INFO L225 Difference]: With dead ends: 45031 [2018-11-06 21:49:32,786 INFO L226 Difference]: Without dead ends: 31842 [2018-11-06 21:49:32,800 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31842 states. [2018-11-06 21:49:33,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31842 to 30460. [2018-11-06 21:49:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30460 states. [2018-11-06 21:49:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30460 states to 30460 states and 32826 transitions. [2018-11-06 21:49:33,166 INFO L78 Accepts]: Start accepts. Automaton has 30460 states and 32826 transitions. Word has length 1036 [2018-11-06 21:49:33,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:33,168 INFO L480 AbstractCegarLoop]: Abstraction has 30460 states and 32826 transitions. [2018-11-06 21:49:33,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:49:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 30460 states and 32826 transitions. [2018-11-06 21:49:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2018-11-06 21:49:33,215 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:33,217 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:49:33,217 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:33,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:33,217 INFO L82 PathProgramCache]: Analyzing trace with hash -919672874, now seen corresponding path program 1 times [2018-11-06 21:49:33,218 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:33,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:33,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:33,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:33,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-11-06 21:49:34,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:49:34,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:49:34,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:49:34,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:49:34,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:49:34,586 INFO L87 Difference]: Start difference. First operand 30460 states and 32826 transitions. Second operand 3 states. [2018-11-06 21:49:37,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:37,560 INFO L93 Difference]: Finished difference Result 62300 states and 67186 transitions. [2018-11-06 21:49:37,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:49:37,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1050 [2018-11-06 21:49:37,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:37,602 INFO L225 Difference]: With dead ends: 62300 [2018-11-06 21:49:37,602 INFO L226 Difference]: Without dead ends: 32533 [2018-11-06 21:49:37,631 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:49:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32533 states. [2018-11-06 21:49:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32533 to 32533. [2018-11-06 21:49:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32533 states. [2018-11-06 21:49:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32533 states to 32533 states and 34929 transitions. [2018-11-06 21:49:37,963 INFO L78 Accepts]: Start accepts. Automaton has 32533 states and 34929 transitions. Word has length 1050 [2018-11-06 21:49:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:37,965 INFO L480 AbstractCegarLoop]: Abstraction has 32533 states and 34929 transitions. [2018-11-06 21:49:37,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:49:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 32533 states and 34929 transitions. [2018-11-06 21:49:37,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2018-11-06 21:49:37,983 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:37,984 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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:49:37,984 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:37,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:37,985 INFO L82 PathProgramCache]: Analyzing trace with hash 801899915, now seen corresponding path program 1 times [2018-11-06 21:49:37,985 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:37,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:37,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:37,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:37,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 649 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-11-06 21:49:39,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:49:39,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:49:39,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:49:39,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:49:39,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:39,293 INFO L87 Difference]: Start difference. First operand 32533 states and 34929 transitions. Second operand 4 states. [2018-11-06 21:49:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:49:43,902 INFO L93 Difference]: Finished difference Result 69901 states and 75440 transitions. [2018-11-06 21:49:43,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:49:43,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1078 [2018-11-06 21:49:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:49:43,949 INFO L225 Difference]: With dead ends: 69901 [2018-11-06 21:49:43,950 INFO L226 Difference]: Without dead ends: 37367 [2018-11-06 21:49:43,972 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:49:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37367 states. [2018-11-06 21:49:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37367 to 37367. [2018-11-06 21:49:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37367 states. [2018-11-06 21:49:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37367 states to 37367 states and 40066 transitions. [2018-11-06 21:49:44,366 INFO L78 Accepts]: Start accepts. Automaton has 37367 states and 40066 transitions. Word has length 1078 [2018-11-06 21:49:44,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:49:44,367 INFO L480 AbstractCegarLoop]: Abstraction has 37367 states and 40066 transitions. [2018-11-06 21:49:44,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:49:44,368 INFO L276 IsEmpty]: Start isEmpty. Operand 37367 states and 40066 transitions. [2018-11-06 21:49:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2018-11-06 21:49:44,388 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:49:44,389 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:49:44,389 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:49:44,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:49:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash 949946755, now seen corresponding path program 1 times [2018-11-06 21:49:44,390 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:49:44,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:49:44,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:44,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:44,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:49:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:45,444 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-06 21:49:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 471 proven. 752 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-06 21:49:48,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:49:48,183 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:49:48,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:49:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:49:48,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:49:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-11-06 21:49:49,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:49:49,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-11-06 21:49:49,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 21:49:49,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 21:49:49,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:49:49,180 INFO L87 Difference]: Start difference. First operand 37367 states and 40066 transitions. Second operand 12 states. [2018-11-06 21:50:07,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:07,566 INFO L93 Difference]: Finished difference Result 109053 states and 118617 transitions. [2018-11-06 21:50:07,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-06 21:50:07,567 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1128 [2018-11-06 21:50:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:07,659 INFO L225 Difference]: With dead ends: 109053 [2018-11-06 21:50:07,660 INFO L226 Difference]: Without dead ends: 72379 [2018-11-06 21:50:07,692 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1141 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2018-11-06 21:50:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72379 states. [2018-11-06 21:50:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72379 to 50496. [2018-11-06 21:50:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50496 states. [2018-11-06 21:50:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50496 states to 50496 states and 54053 transitions. [2018-11-06 21:50:08,640 INFO L78 Accepts]: Start accepts. Automaton has 50496 states and 54053 transitions. Word has length 1128 [2018-11-06 21:50:08,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:08,641 INFO L480 AbstractCegarLoop]: Abstraction has 50496 states and 54053 transitions. [2018-11-06 21:50:08,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 21:50:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 50496 states and 54053 transitions. [2018-11-06 21:50:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2018-11-06 21:50:08,659 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:08,660 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:50:08,660 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:08,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:08,661 INFO L82 PathProgramCache]: Analyzing trace with hash -463347198, now seen corresponding path program 1 times [2018-11-06 21:50:08,661 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:08,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:08,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:08,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:08,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-11-06 21:50:09,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:09,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:50:09,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:50:09,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:50:09,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:09,981 INFO L87 Difference]: Start difference. First operand 50496 states and 54053 transitions. Second operand 4 states. [2018-11-06 21:50:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:15,642 INFO L93 Difference]: Finished difference Result 107209 states and 115301 transitions. [2018-11-06 21:50:15,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:50:15,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1128 [2018-11-06 21:50:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:15,699 INFO L225 Difference]: With dead ends: 107209 [2018-11-06 21:50:15,699 INFO L226 Difference]: Without dead ends: 51858 [2018-11-06 21:50:15,727 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51858 states. [2018-11-06 21:50:16,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51858 to 51167. [2018-11-06 21:50:16,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51167 states. [2018-11-06 21:50:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51167 states to 51167 states and 53884 transitions. [2018-11-06 21:50:16,180 INFO L78 Accepts]: Start accepts. Automaton has 51167 states and 53884 transitions. Word has length 1128 [2018-11-06 21:50:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:16,181 INFO L480 AbstractCegarLoop]: Abstraction has 51167 states and 53884 transitions. [2018-11-06 21:50:16,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:50:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 51167 states and 53884 transitions. [2018-11-06 21:50:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-11-06 21:50:16,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:16,198 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:50:16,198 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:16,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:16,199 INFO L82 PathProgramCache]: Analyzing trace with hash -57160703, now seen corresponding path program 1 times [2018-11-06 21:50:16,199 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:16,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:16,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:16,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:16,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-11-06 21:50:17,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:17,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:50:17,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:50:17,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:50:17,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:17,248 INFO L87 Difference]: Start difference. First operand 51167 states and 53884 transitions. Second operand 4 states. [2018-11-06 21:50:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:22,429 INFO L93 Difference]: Finished difference Result 135509 states and 143194 transitions. [2018-11-06 21:50:22,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:50:22,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1144 [2018-11-06 21:50:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:22,528 INFO L225 Difference]: With dead ends: 135509 [2018-11-06 21:50:22,528 INFO L226 Difference]: Without dead ends: 85035 [2018-11-06 21:50:22,562 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85035 states. [2018-11-06 21:50:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85035 to 85033. [2018-11-06 21:50:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85033 states. [2018-11-06 21:50:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85033 states to 85033 states and 89073 transitions. [2018-11-06 21:50:23,241 INFO L78 Accepts]: Start accepts. Automaton has 85033 states and 89073 transitions. Word has length 1144 [2018-11-06 21:50:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:23,241 INFO L480 AbstractCegarLoop]: Abstraction has 85033 states and 89073 transitions. [2018-11-06 21:50:23,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:50:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 85033 states and 89073 transitions. [2018-11-06 21:50:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1182 [2018-11-06 21:50:23,257 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:23,257 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:50:23,258 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:23,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:23,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1206864501, now seen corresponding path program 1 times [2018-11-06 21:50:23,259 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:23,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:23,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:23,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:23,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:24,399 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-11-06 21:50:24,785 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-11-06 21:50:25,211 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-11-06 21:50:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 675 proven. 499 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-11-06 21:50:28,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:50:28,551 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:50:28,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:28,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:50:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2018-11-06 21:50:30,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:50:30,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2018-11-06 21:50:30,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 21:50:30,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 21:50:30,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:50:30,310 INFO L87 Difference]: Start difference. First operand 85033 states and 89073 transitions. Second operand 13 states. [2018-11-06 21:50:47,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:47,732 INFO L93 Difference]: Finished difference Result 188056 states and 196736 transitions. [2018-11-06 21:50:47,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-06 21:50:47,732 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1181 [2018-11-06 21:50:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:47,843 INFO L225 Difference]: With dead ends: 188056 [2018-11-06 21:50:47,843 INFO L226 Difference]: Without dead ends: 96101 [2018-11-06 21:50:47,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1181 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2018-11-06 21:50:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96101 states. [2018-11-06 21:50:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96101 to 91243. [2018-11-06 21:50:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91243 states. [2018-11-06 21:50:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91243 states to 91243 states and 94645 transitions. [2018-11-06 21:50:48,640 INFO L78 Accepts]: Start accepts. Automaton has 91243 states and 94645 transitions. Word has length 1181 [2018-11-06 21:50:48,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:48,641 INFO L480 AbstractCegarLoop]: Abstraction has 91243 states and 94645 transitions. [2018-11-06 21:50:48,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 21:50:48,641 INFO L276 IsEmpty]: Start isEmpty. Operand 91243 states and 94645 transitions. [2018-11-06 21:50:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1198 [2018-11-06 21:50:48,657 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:48,658 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:50:48,658 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:48,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:48,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1072137315, now seen corresponding path program 1 times [2018-11-06 21:50:48,659 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:48,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:48,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:48,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:48,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1467 backedges. 838 proven. 0 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2018-11-06 21:50:50,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:50,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:50:50,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:50:50,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:50:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:50,395 INFO L87 Difference]: Start difference. First operand 91243 states and 94645 transitions. Second operand 4 states. [2018-11-06 21:50:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:50:55,187 INFO L93 Difference]: Finished difference Result 217041 states and 225289 transitions. [2018-11-06 21:50:55,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:50:55,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1197 [2018-11-06 21:50:55,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:50:55,329 INFO L225 Difference]: With dead ends: 217041 [2018-11-06 21:50:55,329 INFO L226 Difference]: Without dead ends: 122336 [2018-11-06 21:50:55,383 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:55,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122336 states. [2018-11-06 21:50:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122336 to 107128. [2018-11-06 21:50:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107128 states. [2018-11-06 21:50:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107128 states to 107128 states and 110471 transitions. [2018-11-06 21:50:56,743 INFO L78 Accepts]: Start accepts. Automaton has 107128 states and 110471 transitions. Word has length 1197 [2018-11-06 21:50:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:50:56,743 INFO L480 AbstractCegarLoop]: Abstraction has 107128 states and 110471 transitions. [2018-11-06 21:50:56,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:50:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 107128 states and 110471 transitions. [2018-11-06 21:50:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2018-11-06 21:50:56,755 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:50:56,756 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:50:56,756 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:50:56,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:50:56,757 INFO L82 PathProgramCache]: Analyzing trace with hash 969939361, now seen corresponding path program 1 times [2018-11-06 21:50:56,757 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:50:56,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:50:56,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:56,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:50:56,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:50:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:50:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2018-11-06 21:50:57,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:50:57,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:50:57,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:50:57,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:50:57,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:50:57,787 INFO L87 Difference]: Start difference. First operand 107128 states and 110471 transitions. Second operand 4 states. [2018-11-06 21:51:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:51:02,904 INFO L93 Difference]: Finished difference Result 233602 states and 240931 transitions. [2018-11-06 21:51:02,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:51:02,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1211 [2018-11-06 21:51:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:51:03,018 INFO L225 Difference]: With dead ends: 233602 [2018-11-06 21:51:03,018 INFO L226 Difference]: Without dead ends: 123707 [2018-11-06 21:51:03,068 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:51:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123707 states. [2018-11-06 21:51:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123707 to 119561. [2018-11-06 21:51:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119561 states. [2018-11-06 21:51:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119561 states to 119561 states and 122869 transitions. [2018-11-06 21:51:04,115 INFO L78 Accepts]: Start accepts. Automaton has 119561 states and 122869 transitions. Word has length 1211 [2018-11-06 21:51:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:51:04,116 INFO L480 AbstractCegarLoop]: Abstraction has 119561 states and 122869 transitions. [2018-11-06 21:51:04,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:51:04,116 INFO L276 IsEmpty]: Start isEmpty. Operand 119561 states and 122869 transitions. [2018-11-06 21:51:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2018-11-06 21:51:04,132 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:51:04,133 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:51:04,133 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:51:04,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:51:04,134 INFO L82 PathProgramCache]: Analyzing trace with hash -200433740, now seen corresponding path program 1 times [2018-11-06 21:51:04,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:51:04,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:51:04,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:04,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:04,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:05,098 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-06 21:51:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 847 proven. 1055 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-06 21:51:08,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:51:08,662 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:51:08,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:08,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:51:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1089 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2018-11-06 21:51:09,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:51:09,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-11-06 21:51:09,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 21:51:09,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 21:51:09,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:51:09,753 INFO L87 Difference]: Start difference. First operand 119561 states and 122869 transitions. Second operand 12 states. [2018-11-06 21:51:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:51:25,204 INFO L93 Difference]: Finished difference Result 276718 states and 284415 transitions. [2018-11-06 21:51:25,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-06 21:51:25,204 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1247 [2018-11-06 21:51:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:51:25,361 INFO L225 Difference]: With dead ends: 276718 [2018-11-06 21:51:25,361 INFO L226 Difference]: Without dead ends: 157850 [2018-11-06 21:51:25,412 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1285 GetRequests, 1258 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2018-11-06 21:51:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157850 states. [2018-11-06 21:51:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157850 to 114029. [2018-11-06 21:51:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114029 states. [2018-11-06 21:51:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114029 states to 114029 states and 116190 transitions. [2018-11-06 21:51:26,596 INFO L78 Accepts]: Start accepts. Automaton has 114029 states and 116190 transitions. Word has length 1247 [2018-11-06 21:51:26,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:51:26,597 INFO L480 AbstractCegarLoop]: Abstraction has 114029 states and 116190 transitions. [2018-11-06 21:51:26,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 21:51:26,597 INFO L276 IsEmpty]: Start isEmpty. Operand 114029 states and 116190 transitions. [2018-11-06 21:51:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1283 [2018-11-06 21:51:26,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:51:26,614 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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:51:26,614 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:51:26,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:51:26,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1866356196, now seen corresponding path program 1 times [2018-11-06 21:51:26,615 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:51:26,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:51:26,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:26,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:26,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2018-11-06 21:51:28,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:51:28,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:51:28,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:51:28,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:51:28,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:51:28,443 INFO L87 Difference]: Start difference. First operand 114029 states and 116190 transitions. Second operand 4 states. [2018-11-06 21:51:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:51:33,261 INFO L93 Difference]: Finished difference Result 228746 states and 233184 transitions. [2018-11-06 21:51:33,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:51:33,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1282 [2018-11-06 21:51:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:51:33,362 INFO L225 Difference]: With dead ends: 228746 [2018-11-06 21:51:33,362 INFO L226 Difference]: Without dead ends: 111950 [2018-11-06 21:51:33,415 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:51:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111950 states. [2018-11-06 21:51:34,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111950 to 109186. [2018-11-06 21:51:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109186 states. [2018-11-06 21:51:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109186 states to 109186 states and 111046 transitions. [2018-11-06 21:51:34,363 INFO L78 Accepts]: Start accepts. Automaton has 109186 states and 111046 transitions. Word has length 1282 [2018-11-06 21:51:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:51:34,364 INFO L480 AbstractCegarLoop]: Abstraction has 109186 states and 111046 transitions. [2018-11-06 21:51:34,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:51:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 109186 states and 111046 transitions. [2018-11-06 21:51:34,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1306 [2018-11-06 21:51:34,379 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:51:34,380 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:51:34,380 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:51:34,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:51:34,381 INFO L82 PathProgramCache]: Analyzing trace with hash 930754700, now seen corresponding path program 1 times [2018-11-06 21:51:34,381 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:51:34,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:51:34,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:34,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:34,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1778 backedges. 1041 proven. 159 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-11-06 21:51:36,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:51:36,285 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:51:36,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:36,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:51:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1778 backedges. 1041 proven. 159 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-11-06 21:51:37,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:51:37,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-11-06 21:51:37,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:51:37,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:51:37,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:51:37,675 INFO L87 Difference]: Start difference. First operand 109186 states and 111046 transitions. Second operand 7 states. [2018-11-06 21:51:50,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:51:50,969 INFO L93 Difference]: Finished difference Result 242555 states and 246737 transitions. [2018-11-06 21:51:50,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 21:51:50,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1305 [2018-11-06 21:51:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:51:51,115 INFO L225 Difference]: With dead ends: 242555 [2018-11-06 21:51:51,115 INFO L226 Difference]: Without dead ends: 131988 [2018-11-06 21:51:51,170 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1316 GetRequests, 1307 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-11-06 21:51:51,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131988 states. [2018-11-06 21:51:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131988 to 111949. [2018-11-06 21:51:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111949 states. [2018-11-06 21:51:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111949 states to 111949 states and 113475 transitions. [2018-11-06 21:51:52,286 INFO L78 Accepts]: Start accepts. Automaton has 111949 states and 113475 transitions. Word has length 1305 [2018-11-06 21:51:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:51:52,287 INFO L480 AbstractCegarLoop]: Abstraction has 111949 states and 113475 transitions. [2018-11-06 21:51:52,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:51:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 111949 states and 113475 transitions. [2018-11-06 21:51:52,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1431 [2018-11-06 21:51:52,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:51:52,312 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:51:52,312 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:51:52,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:51:52,313 INFO L82 PathProgramCache]: Analyzing trace with hash 351258304, now seen corresponding path program 1 times [2018-11-06 21:51:52,313 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:51:52,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:51:52,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:52,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:52,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:53,094 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 21:51:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 1659 proven. 105 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2018-11-06 21:51:56,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:51:56,707 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:51:56,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:57,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:51:57,385 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 20 Received shutdown request... [2018-11-06 21:52:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2393 backedges. 1336 proven. 156 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2018-11-06 21:52:00,223 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:52:00,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-06 21:52:00,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:52:00,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:52:00,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:52:00,226 INFO L87 Difference]: Start difference. First operand 111949 states and 113475 transitions. Second operand 8 states. [2018-11-06 21:52:00,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 21:52:00,227 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:52:00,233 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:52:00,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:52:00 BoogieIcfgContainer [2018-11-06 21:52:00,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:52:00,234 INFO L168 Benchmark]: Toolchain (without parser) took 223719.16 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-06 21:52:00,235 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-11-06 21:52:00,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1714.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-06 21:52:00,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 447.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 804.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.4 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-06 21:52:00,239 INFO L168 Benchmark]: Boogie Preprocessor took 234.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:52:00,240 INFO L168 Benchmark]: RCFGBuilder took 8953.03 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. [2018-11-06 21:52:00,240 INFO L168 Benchmark]: TraceAbstraction took 212363.82 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 613.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:52:00,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1714.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 447.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 804.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.4 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 234.62 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8953.03 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212363.82 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 613.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 165). Cancelled while BasicCegarLoop was constructing difference of abstraction (111949states) and FLOYD_HOARE automaton (currently 2 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 212.2s OverallTime, 18 OverallIterations, 8 TraceHistogramMax, 158.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9322 SDtfs, 61981 SDslu, 2171 SDs, 0 SdLazy, 115889 SolverSat, 15743 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7049 GetRequests, 6911 SyntacticMatches, 13 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119561occurred in iteration=14, 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: 10.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 125184 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 23366 NumberOfCodeBlocks, 23366 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 23341 ConstructedInterpolants, 259 QuantifiedInterpolants, 81860298 SizeOfPredicates, 5 NumberOfNonLiveVariables, 7975 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 25 InterpolantComputations, 16 PerfectInterpolantSequences, 25514/28407 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown