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_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:39:10,767 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:39:10,770 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:39:10,782 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:39:10,782 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:39:10,783 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:39:10,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:39:10,787 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:39:10,788 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:39:10,789 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:39:10,790 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:39:10,791 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:39:10,791 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:39:10,792 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:39:10,794 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:39:10,794 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:39:10,795 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:39:10,798 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:39:10,803 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:39:10,805 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:39:10,810 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:39:10,812 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:39:10,815 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:39:10,815 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:39:10,815 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:39:10,816 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:39:10,817 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:39:10,818 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:39:10,819 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:39:10,820 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:39:10,820 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:39:10,821 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 19:39:10,821 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 19:39:10,821 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 19:39:10,822 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 19:39:10,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 19:39:10,823 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 19:39:10,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:39:10,840 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:39:10,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:39:10,841 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:39:10,843 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:39:10,843 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:39:10,843 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:39:10,845 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:39:10,845 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:39:10,845 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:39:10,846 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:39:10,846 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:39:10,846 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:39:10,846 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:39:10,846 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:39:10,847 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:39:10,847 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:39:10,847 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:39:10,847 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:39:10,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:39:10,848 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:39:10,848 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:39:10,848 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:39:10,848 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:39:10,848 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:39:10,848 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:39:10,850 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:39:10,850 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:39:10,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:39:10,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:39:10,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:39:10,920 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:39:10,920 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:39:10,921 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-11-06 19:39:10,982 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73cd04fe6/fd60b9401cea46769cff3ef021aedc69/FLAGa4cfca09e [2018-11-06 19:39:11,807 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:39:11,808 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-11-06 19:39:11,836 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73cd04fe6/fd60b9401cea46769cff3ef021aedc69/FLAGa4cfca09e [2018-11-06 19:39:11,851 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73cd04fe6/fd60b9401cea46769cff3ef021aedc69 [2018-11-06 19:39:11,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:39:11,864 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:39:11,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:39:11,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:39:11,872 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:39:11,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:39:11" (1/1) ... [2018-11-06 19:39:11,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cedeeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:11, skipping insertion in model container [2018-11-06 19:39:11,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:39:11" (1/1) ... [2018-11-06 19:39:11,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:39:12,015 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:39:13,088 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:39:13,093 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:39:13,600 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:39:13,629 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:39:13,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13 WrapperNode [2018-11-06 19:39:13,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:39:13,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:39:13,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:39:13,631 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:39:13,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (1/1) ... [2018-11-06 19:39:13,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (1/1) ... [2018-11-06 19:39:14,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:39:14,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:39:14,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:39:14,142 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:39:14,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (1/1) ... [2018-11-06 19:39:14,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (1/1) ... [2018-11-06 19:39:14,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (1/1) ... [2018-11-06 19:39:14,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (1/1) ... [2018-11-06 19:39:14,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (1/1) ... [2018-11-06 19:39:14,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (1/1) ... [2018-11-06 19:39:14,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (1/1) ... [2018-11-06 19:39:14,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:39:14,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:39:14,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:39:14,346 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:39:14,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (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 19:39:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:39:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:39:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:39:23,685 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:39:23,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:39:23 BoogieIcfgContainer [2018-11-06 19:39:23,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:39:23,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:39:23,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:39:23,690 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:39:23,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:39:11" (1/3) ... [2018-11-06 19:39:23,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:39:23, skipping insertion in model container [2018-11-06 19:39:23,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:39:13" (2/3) ... [2018-11-06 19:39:23,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:39:23, skipping insertion in model container [2018-11-06 19:39:23,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:39:23" (3/3) ... [2018-11-06 19:39:23,694 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label39_false-unreach-call.c [2018-11-06 19:39:23,705 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:39:23,718 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:39:23,737 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:39:23,789 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:39:23,790 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:39:23,790 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:39:23,790 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:39:23,791 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:39:23,791 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:39:23,791 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:39:23,791 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:39:23,791 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:39:23,826 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-11-06 19:39:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-06 19:39:23,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:23,834 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:39:23,837 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:23,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:23,844 INFO L82 PathProgramCache]: Analyzing trace with hash 340357962, now seen corresponding path program 1 times [2018-11-06 19:39:23,846 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:23,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:23,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:23,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:23,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:24,267 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 19:39:24,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:24,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:39:24,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:24,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:24,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:24,295 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-11-06 19:39:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:35,894 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-11-06 19:39:35,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:39:35,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-06 19:39:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:35,937 INFO L225 Difference]: With dead ends: 2902 [2018-11-06 19:39:35,937 INFO L226 Difference]: Without dead ends: 2137 [2018-11-06 19:39:35,944 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-11-06 19:39:36,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-11-06 19:39:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-11-06 19:39:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3733 transitions. [2018-11-06 19:39:36,096 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3733 transitions. Word has length 14 [2018-11-06 19:39:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:36,096 INFO L480 AbstractCegarLoop]: Abstraction has 2137 states and 3733 transitions. [2018-11-06 19:39:36,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3733 transitions. [2018-11-06 19:39:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-06 19:39:36,103 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:36,103 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:39:36,103 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:36,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:36,104 INFO L82 PathProgramCache]: Analyzing trace with hash 743551834, now seen corresponding path program 1 times [2018-11-06 19:39:36,104 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:36,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:36,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:36,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:36,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:39:36,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:36,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:39:36,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:36,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:36,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:36,347 INFO L87 Difference]: Start difference. First operand 2137 states and 3733 transitions. Second operand 4 states. [2018-11-06 19:39:43,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:43,541 INFO L93 Difference]: Finished difference Result 6345 states and 11134 transitions. [2018-11-06 19:39:43,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:39:43,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2018-11-06 19:39:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:43,565 INFO L225 Difference]: With dead ends: 6345 [2018-11-06 19:39:43,565 INFO L226 Difference]: Without dead ends: 4210 [2018-11-06 19:39:43,570 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:43,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2018-11-06 19:39:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 4210. [2018-11-06 19:39:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4210 states. [2018-11-06 19:39:43,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6185 transitions. [2018-11-06 19:39:43,657 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6185 transitions. Word has length 80 [2018-11-06 19:39:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:43,658 INFO L480 AbstractCegarLoop]: Abstraction has 4210 states and 6185 transitions. [2018-11-06 19:39:43,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:43,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6185 transitions. [2018-11-06 19:39:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-06 19:39:43,661 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:43,661 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:39:43,661 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:43,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:43,662 INFO L82 PathProgramCache]: Analyzing trace with hash 662698863, now seen corresponding path program 1 times [2018-11-06 19:39:43,662 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:43,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:43,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:43,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:43,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:39:43,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:43,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:39:43,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:43,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:43,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:43,888 INFO L87 Difference]: Start difference. First operand 4210 states and 6185 transitions. Second operand 4 states. [2018-11-06 19:39:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:50,715 INFO L93 Difference]: Finished difference Result 16727 states and 24628 transitions. [2018-11-06 19:39:50,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:39:50,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2018-11-06 19:39:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:50,773 INFO L225 Difference]: With dead ends: 16727 [2018-11-06 19:39:50,773 INFO L226 Difference]: Without dead ends: 12519 [2018-11-06 19:39:50,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2018-11-06 19:39:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 8356. [2018-11-06 19:39:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8356 states. [2018-11-06 19:39:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8356 states to 8356 states and 10927 transitions. [2018-11-06 19:39:50,964 INFO L78 Accepts]: Start accepts. Automaton has 8356 states and 10927 transitions. Word has length 83 [2018-11-06 19:39:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:50,965 INFO L480 AbstractCegarLoop]: Abstraction has 8356 states and 10927 transitions. [2018-11-06 19:39:50,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 8356 states and 10927 transitions. [2018-11-06 19:39:50,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-06 19:39:50,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:50,974 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:39:50,974 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:50,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:50,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2023094700, now seen corresponding path program 1 times [2018-11-06 19:39:50,975 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:50,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:50,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:50,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:50,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:39:51,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:51,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:39:51,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:51,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:51,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:51,284 INFO L87 Difference]: Start difference. First operand 8356 states and 10927 transitions. Second operand 4 states. [2018-11-06 19:39:57,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:57,184 INFO L93 Difference]: Finished difference Result 32603 states and 42820 transitions. [2018-11-06 19:39:57,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:39:57,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-11-06 19:39:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:57,243 INFO L225 Difference]: With dead ends: 32603 [2018-11-06 19:39:57,244 INFO L226 Difference]: Without dead ends: 20083 [2018-11-06 19:39:57,262 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 19:39:57,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20083 states. [2018-11-06 19:39:57,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20083 to 20083. [2018-11-06 19:39:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20083 states. [2018-11-06 19:39:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20083 states to 20083 states and 22439 transitions. [2018-11-06 19:39:57,594 INFO L78 Accepts]: Start accepts. Automaton has 20083 states and 22439 transitions. Word has length 108 [2018-11-06 19:39:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:57,595 INFO L480 AbstractCegarLoop]: Abstraction has 20083 states and 22439 transitions. [2018-11-06 19:39:57,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 20083 states and 22439 transitions. [2018-11-06 19:39:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-06 19:39:57,606 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:57,606 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-06 19:39:57,607 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:57,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:57,607 INFO L82 PathProgramCache]: Analyzing trace with hash 150843197, now seen corresponding path program 1 times [2018-11-06 19:39:57,607 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:57,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:57,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:57,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:57,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:58,364 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-11-06 19:39:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-06 19:39:58,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:58,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:39:58,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:39:58,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:39:58,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:39:58,774 INFO L87 Difference]: Start difference. First operand 20083 states and 22439 transitions. Second operand 5 states. [2018-11-06 19:40:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:40:04,088 INFO L93 Difference]: Finished difference Result 47074 states and 52335 transitions. [2018-11-06 19:40:04,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:40:04,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 368 [2018-11-06 19:40:04,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:40:04,134 INFO L225 Difference]: With dead ends: 47074 [2018-11-06 19:40:04,134 INFO L226 Difference]: Without dead ends: 26993 [2018-11-06 19:40:04,157 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:40:04,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26993 states. [2018-11-06 19:40:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26993 to 25611. [2018-11-06 19:40:04,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25611 states. [2018-11-06 19:40:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25611 states to 25611 states and 28083 transitions. [2018-11-06 19:40:04,453 INFO L78 Accepts]: Start accepts. Automaton has 25611 states and 28083 transitions. Word has length 368 [2018-11-06 19:40:04,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:40:04,453 INFO L480 AbstractCegarLoop]: Abstraction has 25611 states and 28083 transitions. [2018-11-06 19:40:04,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:40:04,454 INFO L276 IsEmpty]: Start isEmpty. Operand 25611 states and 28083 transitions. [2018-11-06 19:40:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1105 [2018-11-06 19:40:04,491 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:40:04,492 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:04,492 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:40:04,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:40:04,493 INFO L82 PathProgramCache]: Analyzing trace with hash 2141634323, now seen corresponding path program 1 times [2018-11-06 19:40:04,493 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:40:04,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:40:04,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:04,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:04,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1114 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-11-06 19:40:05,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:40:05,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:40:05,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:40:05,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:40:05,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:40:05,985 INFO L87 Difference]: Start difference. First operand 25611 states and 28083 transitions. Second operand 4 states. [2018-11-06 19:40:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:40:11,277 INFO L93 Difference]: Finished difference Result 72651 states and 81328 transitions. [2018-11-06 19:40:11,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:40:11,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1104 [2018-11-06 19:40:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:40:11,323 INFO L225 Difference]: With dead ends: 72651 [2018-11-06 19:40:11,323 INFO L226 Difference]: Without dead ends: 47733 [2018-11-06 19:40:11,352 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 19:40:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47733 states. [2018-11-06 19:40:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47733 to 47733. [2018-11-06 19:40:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47733 states. [2018-11-06 19:40:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47733 states to 47733 states and 51776 transitions. [2018-11-06 19:40:11,847 INFO L78 Accepts]: Start accepts. Automaton has 47733 states and 51776 transitions. Word has length 1104 [2018-11-06 19:40:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:40:11,849 INFO L480 AbstractCegarLoop]: Abstraction has 47733 states and 51776 transitions. [2018-11-06 19:40:11,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:40:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 47733 states and 51776 transitions. [2018-11-06 19:40:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2018-11-06 19:40:11,904 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:40:11,905 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:11,905 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:40:11,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:40:11,906 INFO L82 PathProgramCache]: Analyzing trace with hash -272164074, now seen corresponding path program 1 times [2018-11-06 19:40:11,906 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:40:11,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:40:11,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:11,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:11,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:13,009 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 19:40:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2018-11-06 19:40:13,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:40:13,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:40:13,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:40:13,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:40:13,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:40:13,835 INFO L87 Difference]: Start difference. First operand 47733 states and 51776 transitions. Second operand 4 states. [2018-11-06 19:40:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:40:19,391 INFO L93 Difference]: Finished difference Result 128632 states and 139923 transitions. [2018-11-06 19:40:19,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:40:19,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1118 [2018-11-06 19:40:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:40:19,487 INFO L225 Difference]: With dead ends: 128632 [2018-11-06 19:40:19,488 INFO L226 Difference]: Without dead ends: 81592 [2018-11-06 19:40:19,517 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:40:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81592 states. [2018-11-06 19:40:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81592 to 79519. [2018-11-06 19:40:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79519 states. [2018-11-06 19:40:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79519 states to 79519 states and 85159 transitions. [2018-11-06 19:40:20,321 INFO L78 Accepts]: Start accepts. Automaton has 79519 states and 85159 transitions. Word has length 1118 [2018-11-06 19:40:20,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:40:20,323 INFO L480 AbstractCegarLoop]: Abstraction has 79519 states and 85159 transitions. [2018-11-06 19:40:20,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:40:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 79519 states and 85159 transitions. [2018-11-06 19:40:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1297 [2018-11-06 19:40:20,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:40:20,429 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:20,429 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:40:20,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:40:20,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1711964959, now seen corresponding path program 1 times [2018-11-06 19:40:20,430 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:40:20,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:40:20,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:20,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:20,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:21,777 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-06 19:40:22,170 WARN L179 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-11-06 19:40:22,678 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-11-06 19:40:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2074 backedges. 955 proven. 901 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-11-06 19:40:25,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:40:25,694 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 19:40:25,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:26,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:40:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2074 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2018-11-06 19:40:27,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:40:27,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-11-06 19:40:27,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 19:40:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 19:40:27,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:40:27,132 INFO L87 Difference]: Start difference. First operand 79519 states and 85159 transitions. Second operand 12 states. [2018-11-06 19:40:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:40:48,378 INFO L93 Difference]: Finished difference Result 219014 states and 237115 transitions. [2018-11-06 19:40:48,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-06 19:40:48,379 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1296 [2018-11-06 19:40:48,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:40:48,593 INFO L225 Difference]: With dead ends: 219014 [2018-11-06 19:40:48,593 INFO L226 Difference]: Without dead ends: 140188 [2018-11-06 19:40:48,654 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1339 GetRequests, 1309 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2018-11-06 19:40:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140188 states. [2018-11-06 19:40:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140188 to 96789. [2018-11-06 19:40:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96789 states. [2018-11-06 19:40:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96789 states to 96789 states and 102779 transitions. [2018-11-06 19:40:50,377 INFO L78 Accepts]: Start accepts. Automaton has 96789 states and 102779 transitions. Word has length 1296 [2018-11-06 19:40:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:40:50,378 INFO L480 AbstractCegarLoop]: Abstraction has 96789 states and 102779 transitions. [2018-11-06 19:40:50,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 19:40:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 96789 states and 102779 transitions. [2018-11-06 19:40:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1350 [2018-11-06 19:40:50,433 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:40:50,434 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:50,435 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:40:50,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:40:50,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1463033272, now seen corresponding path program 1 times [2018-11-06 19:40:50,435 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:40:50,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:40:50,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:50,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:50,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 1083 proven. 6 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2018-11-06 19:40:53,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:40:53,187 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 19:40:53,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:53,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:40:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1965 backedges. 1083 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-11-06 19:40:55,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:40:55,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 19:40:55,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:40:55,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:40:55,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:40:55,038 INFO L87 Difference]: Start difference. First operand 96789 states and 102779 transitions. Second operand 5 states. [2018-11-06 19:41:00,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:41:00,074 INFO L93 Difference]: Finished difference Result 214305 states and 227844 transitions. [2018-11-06 19:41:00,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:41:00,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1349 [2018-11-06 19:41:00,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:41:00,198 INFO L225 Difference]: With dead ends: 214305 [2018-11-06 19:41:00,199 INFO L226 Difference]: Without dead ends: 118209 [2018-11-06 19:41:00,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1351 GetRequests, 1348 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:41:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118209 states. [2018-11-06 19:41:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118209 to 115445. [2018-11-06 19:41:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115445 states. [2018-11-06 19:41:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115445 states to 115445 states and 121622 transitions. [2018-11-06 19:41:01,644 INFO L78 Accepts]: Start accepts. Automaton has 115445 states and 121622 transitions. Word has length 1349 [2018-11-06 19:41:01,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:41:01,645 INFO L480 AbstractCegarLoop]: Abstraction has 115445 states and 121622 transitions. [2018-11-06 19:41:01,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:41:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 115445 states and 121622 transitions. [2018-11-06 19:41:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1370 [2018-11-06 19:41:01,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:41:01,688 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:01,689 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:41:01,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:41:01,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1977725816, now seen corresponding path program 1 times [2018-11-06 19:41:01,689 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:41:01,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:41:01,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:01,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:01,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2023 backedges. 1434 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2018-11-06 19:41:03,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:41:03,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:41:03,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:41:03,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:41:03,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:41:03,663 INFO L87 Difference]: Start difference. First operand 115445 states and 121622 transitions. Second operand 4 states. [2018-11-06 19:41:08,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:41:08,167 INFO L93 Difference]: Finished difference Result 235035 states and 247542 transitions. [2018-11-06 19:41:08,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:41:08,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1369 [2018-11-06 19:41:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:41:08,302 INFO L225 Difference]: With dead ends: 235035 [2018-11-06 19:41:08,302 INFO L226 Difference]: Without dead ends: 120283 [2018-11-06 19:41:08,367 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 19:41:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120283 states. [2018-11-06 19:41:09,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120283 to 116827. [2018-11-06 19:41:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116827 states. [2018-11-06 19:41:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116827 states to 116827 states and 122821 transitions. [2018-11-06 19:41:09,247 INFO L78 Accepts]: Start accepts. Automaton has 116827 states and 122821 transitions. Word has length 1369 [2018-11-06 19:41:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:41:09,248 INFO L480 AbstractCegarLoop]: Abstraction has 116827 states and 122821 transitions. [2018-11-06 19:41:09,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:41:09,248 INFO L276 IsEmpty]: Start isEmpty. Operand 116827 states and 122821 transitions. [2018-11-06 19:41:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1391 [2018-11-06 19:41:09,277 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:41:09,278 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:09,278 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:41:09,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:41:09,279 INFO L82 PathProgramCache]: Analyzing trace with hash 244766463, now seen corresponding path program 1 times [2018-11-06 19:41:09,279 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:41:09,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:41:09,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:09,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:09,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:10,267 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-11-06 19:41:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 1461 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-06 19:41:11,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:41:11,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:41:11,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:41:11,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:41:11,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:41:11,279 INFO L87 Difference]: Start difference. First operand 116827 states and 122821 transitions. Second operand 4 states. [2018-11-06 19:41:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:41:16,253 INFO L93 Difference]: Finished difference Result 237798 states and 249840 transitions. [2018-11-06 19:41:16,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:41:16,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1390 [2018-11-06 19:41:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:41:16,372 INFO L225 Difference]: With dead ends: 237798 [2018-11-06 19:41:16,372 INFO L226 Difference]: Without dead ends: 121664 [2018-11-06 19:41:16,415 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:41:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121664 states. [2018-11-06 19:41:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121664 to 120282. [2018-11-06 19:41:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120282 states. [2018-11-06 19:41:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120282 states to 120282 states and 125284 transitions. [2018-11-06 19:41:17,283 INFO L78 Accepts]: Start accepts. Automaton has 120282 states and 125284 transitions. Word has length 1390 [2018-11-06 19:41:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:41:17,284 INFO L480 AbstractCegarLoop]: Abstraction has 120282 states and 125284 transitions. [2018-11-06 19:41:17,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:41:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 120282 states and 125284 transitions. [2018-11-06 19:41:17,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2018-11-06 19:41:17,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:41:17,325 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:17,325 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:41:17,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:41:17,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1970607365, now seen corresponding path program 1 times [2018-11-06 19:41:17,325 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:41:17,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:41:17,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:17,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:17,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 1665 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2018-11-06 19:41:19,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:41:19,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:41:19,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:41:19,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:41:19,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:41:19,412 INFO L87 Difference]: Start difference. First operand 120282 states and 125284 transitions. Second operand 4 states. [2018-11-06 19:41:25,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:41:25,315 INFO L93 Difference]: Finished difference Result 259225 states and 270401 transitions. [2018-11-06 19:41:25,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:41:25,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1495 [2018-11-06 19:41:25,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:41:25,457 INFO L225 Difference]: With dead ends: 259225 [2018-11-06 19:41:25,457 INFO L226 Difference]: Without dead ends: 139636 [2018-11-06 19:41:25,513 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 19:41:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139636 states. [2018-11-06 19:41:26,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139636 to 126501. [2018-11-06 19:41:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126501 states. [2018-11-06 19:41:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126501 states to 126501 states and 131667 transitions. [2018-11-06 19:41:26,523 INFO L78 Accepts]: Start accepts. Automaton has 126501 states and 131667 transitions. Word has length 1495 [2018-11-06 19:41:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:41:26,524 INFO L480 AbstractCegarLoop]: Abstraction has 126501 states and 131667 transitions. [2018-11-06 19:41:26,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:41:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 126501 states and 131667 transitions. [2018-11-06 19:41:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1531 [2018-11-06 19:41:26,569 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:41:26,570 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:26,570 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:41:26,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:41:26,571 INFO L82 PathProgramCache]: Analyzing trace with hash 163826486, now seen corresponding path program 1 times [2018-11-06 19:41:26,571 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:41:26,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:41:26,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:26,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:26,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:27,937 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 19:41:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2877 backedges. 2074 proven. 108 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2018-11-06 19:41:29,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:41:29,627 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 19:41:29,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:29,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:41:34,116 WARN L179 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 1877 DAG size of output: 26 [2018-11-06 19:41:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2877 backedges. 1871 proven. 93 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2018-11-06 19:41:36,266 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:41:36,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-11-06 19:41:36,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:41:36,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:41:36,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:41:36,269 INFO L87 Difference]: Start difference. First operand 126501 states and 131667 transitions. Second operand 7 states. [2018-11-06 19:41:56,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:41:56,860 INFO L93 Difference]: Finished difference Result 277192 states and 288400 transitions. [2018-11-06 19:41:56,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 19:41:56,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1530 [2018-11-06 19:41:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:41:56,989 INFO L225 Difference]: With dead ends: 277192 [2018-11-06 19:41:56,989 INFO L226 Difference]: Without dead ends: 151384 [2018-11-06 19:41:57,035 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1538 GetRequests, 1531 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:41:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151384 states. [2018-11-06 19:41:58,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151384 to 130646. [2018-11-06 19:41:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130646 states. [2018-11-06 19:41:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130646 states to 130646 states and 135257 transitions. [2018-11-06 19:41:58,123 INFO L78 Accepts]: Start accepts. Automaton has 130646 states and 135257 transitions. Word has length 1530 [2018-11-06 19:41:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:41:58,124 INFO L480 AbstractCegarLoop]: Abstraction has 130646 states and 135257 transitions. [2018-11-06 19:41:58,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:41:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 130646 states and 135257 transitions. [2018-11-06 19:41:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1591 [2018-11-06 19:41:58,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:41:58,163 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:58,164 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:41:58,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:41:58,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1938229170, now seen corresponding path program 1 times [2018-11-06 19:41:58,164 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:41:58,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:41:58,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:58,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:58,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:59,596 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-06 19:42:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 882 proven. 93 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2018-11-06 19:42:03,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:42:03,900 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 19:42:03,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:42:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:42:04,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:42:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 882 proven. 93 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2018-11-06 19:42:05,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:42:05,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-11-06 19:42:05,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:42:05,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:42:05,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:42:05,844 INFO L87 Difference]: Start difference. First operand 130646 states and 135257 transitions. Second operand 6 states. [2018-11-06 19:42:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:42:15,778 INFO L93 Difference]: Finished difference Result 288250 states and 298323 transitions. [2018-11-06 19:42:15,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:42:15,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1590 [2018-11-06 19:42:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:42:15,926 INFO L225 Difference]: With dead ends: 288250 [2018-11-06 19:42:15,926 INFO L226 Difference]: Without dead ends: 158297 [2018-11-06 19:42:15,992 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1595 GetRequests, 1589 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:42:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158297 states. [2018-11-06 19:42:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158297 to 135485. [2018-11-06 19:42:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135485 states. [2018-11-06 19:42:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135485 states to 135485 states and 140229 transitions. [2018-11-06 19:42:17,659 INFO L78 Accepts]: Start accepts. Automaton has 135485 states and 140229 transitions. Word has length 1590 [2018-11-06 19:42:17,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:42:17,660 INFO L480 AbstractCegarLoop]: Abstraction has 135485 states and 140229 transitions. [2018-11-06 19:42:17,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:42:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 135485 states and 140229 transitions. [2018-11-06 19:42:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1597 [2018-11-06 19:42:17,700 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:42:17,701 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:17,701 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:42:17,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:42:17,702 INFO L82 PathProgramCache]: Analyzing trace with hash -369353464, now seen corresponding path program 1 times [2018-11-06 19:42:17,702 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:42:17,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:42:17,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:42:17,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:42:17,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:42:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:42:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2747 backedges. 1889 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2018-11-06 19:42:20,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:42:20,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:42:20,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:42:20,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:42:20,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:42:20,053 INFO L87 Difference]: Start difference. First operand 135485 states and 140229 transitions. Second operand 4 states. [2018-11-06 19:42:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:42:24,910 INFO L93 Difference]: Finished difference Result 268893 states and 278374 transitions. [2018-11-06 19:42:24,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:42:24,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1596 [2018-11-06 19:42:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:42:25,035 INFO L225 Difference]: With dead ends: 268893 [2018-11-06 19:42:25,035 INFO L226 Difference]: Without dead ends: 121643 [2018-11-06 19:42:25,094 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 19:42:25,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121643 states. [2018-11-06 19:42:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121643 to 120260. [2018-11-06 19:42:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120260 states. [2018-11-06 19:42:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120260 states to 120260 states and 123508 transitions. [2018-11-06 19:42:26,093 INFO L78 Accepts]: Start accepts. Automaton has 120260 states and 123508 transitions. Word has length 1596 [2018-11-06 19:42:26,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:42:26,094 INFO L480 AbstractCegarLoop]: Abstraction has 120260 states and 123508 transitions. [2018-11-06 19:42:26,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:42:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 120260 states and 123508 transitions. [2018-11-06 19:42:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1602 [2018-11-06 19:42:26,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:42:26,129 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 19:42:26,130 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:42:26,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:42:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1212665214, now seen corresponding path program 1 times [2018-11-06 19:42:26,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:42:26,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:42:26,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:42:26,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:42:26,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:42:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:42:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 1627 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2018-11-06 19:42:28,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:42:28,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:42:28,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:42:28,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:42:28,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:42:28,392 INFO L87 Difference]: Start difference. First operand 120260 states and 123508 transitions. Second operand 4 states. [2018-11-06 19:42:33,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:42:33,139 INFO L93 Difference]: Finished difference Result 242590 states and 249230 transitions. [2018-11-06 19:42:33,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:42:33,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1601 [2018-11-06 19:42:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:42:33,257 INFO L225 Difference]: With dead ends: 242590 [2018-11-06 19:42:33,257 INFO L226 Difference]: Without dead ends: 123023 [2018-11-06 19:42:33,314 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 19:42:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123023 states. [2018-11-06 19:42:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123023 to 122332. [2018-11-06 19:42:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122332 states. [2018-11-06 19:42:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122332 states to 122332 states and 125277 transitions. [2018-11-06 19:42:34,709 INFO L78 Accepts]: Start accepts. Automaton has 122332 states and 125277 transitions. Word has length 1601 [2018-11-06 19:42:34,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:42:34,709 INFO L480 AbstractCegarLoop]: Abstraction has 122332 states and 125277 transitions. [2018-11-06 19:42:34,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:42:34,710 INFO L276 IsEmpty]: Start isEmpty. Operand 122332 states and 125277 transitions. [2018-11-06 19:42:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1619 [2018-11-06 19:42:34,740 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:42:34,741 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:42:34,742 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:42:34,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:42:34,742 INFO L82 PathProgramCache]: Analyzing trace with hash 324570657, now seen corresponding path program 1 times [2018-11-06 19:42:34,742 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:42:34,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:42:34,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:42:34,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:42:34,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:42:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:42:35,860 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-06 19:42:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 2334 proven. 802 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-11-06 19:42:39,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:42:39,356 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 19:42:39,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:42:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:42:39,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:42:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3833 backedges. 1627 proven. 0 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2018-11-06 19:42:41,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:42:41,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-11-06 19:42:41,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 19:42:41,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 19:42:41,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:42:41,022 INFO L87 Difference]: Start difference. First operand 122332 states and 125277 transitions. Second operand 12 states. Received shutdown request... [2018-11-06 19:42:50,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-06 19:42:50,122 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:42:50,127 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:42:50,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:42:50 BoogieIcfgContainer [2018-11-06 19:42:50,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:42:50,129 INFO L168 Benchmark]: Toolchain (without parser) took 218265.87 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 1.3 GB. Max. memory is 7.1 GB. [2018-11-06 19:42:50,130 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:42:50,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1765.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:42:50,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 510.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -943.0 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:42:50,132 INFO L168 Benchmark]: Boogie Preprocessor took 204.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-11-06 19:42:50,133 INFO L168 Benchmark]: RCFGBuilder took 9339.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 549.7 MB). Peak memory consumption was 549.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:42:50,133 INFO L168 Benchmark]: TraceAbstraction took 206441.18 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 705.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:42:50,143 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1765.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 510.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -943.0 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9339.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 549.7 MB). Peak memory consumption was 549.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206441.18 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 705.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (122332states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (4156 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 206.3s OverallTime, 17 OverallIterations, 10 TraceHistogramMax, 140.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10589 SDtfs, 39498 SDslu, 1978 SDs, 0 SdLazy, 101243 SolverSat, 11228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7526 GetRequests, 7423 SyntacticMatches, 11 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135485occurred 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: 13.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 117378 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 25.5s InterpolantComputationTime, 25092 NumberOfCodeBlocks, 25092 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 25070 ConstructedInterpolants, 186 QuantifiedInterpolants, 86611570 SizeOfPredicates, 2 NumberOfNonLiveVariables, 8545 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 22 InterpolantComputations, 15 PerfectInterpolantSequences, 38365/40461 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown