java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:44:31,105 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:44:31,107 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:44:31,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:44:31,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:44:31,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:44:31,124 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:44:31,126 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:44:31,133 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:44:31,134 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:44:31,138 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:44:31,138 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:44:31,139 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:44:31,142 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:44:31,143 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:44:31,144 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:44:31,145 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:44:31,146 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:44:31,148 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:44:31,150 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:44:31,151 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:44:31,152 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:44:31,154 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:44:31,154 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:44:31,154 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:44:31,155 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:44:31,156 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:44:31,157 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:44:31,158 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:44:31,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:44:31,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:44:31,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:44:31,162 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:44:31,177 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:44:31,178 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:44:31,178 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:44:31,179 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:44:31,179 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:44:31,179 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:44:31,180 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:44:31,180 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:44:31,180 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:44:31,180 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:44:31,180 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:44:31,181 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:44:31,181 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:44:31,181 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:44:31,181 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:44:31,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:44:31,182 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:44:31,182 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:44:31,182 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:44:31,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:44:31,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:44:31,183 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:44:31,183 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:44:31,183 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:44:31,183 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:44:31,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:44:31,184 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:44:31,184 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:44:31,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:44:31,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:44:31,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:44:31,249 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:44:31,249 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:44:31,250 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38_false-unreach-call.c [2018-10-26 19:44:31,311 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f4666e44/0e130e1f25e045918bfd74bc7285763b/FLAG1100e1f63 [2018-10-26 19:44:32,058 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:44:32,059 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label38_false-unreach-call.c [2018-10-26 19:44:32,089 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f4666e44/0e130e1f25e045918bfd74bc7285763b/FLAG1100e1f63 [2018-10-26 19:44:32,111 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f4666e44/0e130e1f25e045918bfd74bc7285763b [2018-10-26 19:44:32,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:44:32,129 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:44:32,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:44:32,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:44:32,138 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:44:32,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:44:32" (1/1) ... [2018-10-26 19:44:32,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce3d116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:32, skipping insertion in model container [2018-10-26 19:44:32,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:44:32" (1/1) ... [2018-10-26 19:44:32,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:44:32,314 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:44:33,543 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:44:33,548 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:44:34,036 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:44:34,066 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:44:34,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34 WrapperNode [2018-10-26 19:44:34,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:44:34,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:44:34,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:44:34,069 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:44:34,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... [2018-10-26 19:44:34,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... [2018-10-26 19:44:34,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:44:34,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:44:34,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:44:34,537 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:44:34,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... [2018-10-26 19:44:34,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... [2018-10-26 19:44:34,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... [2018-10-26 19:44:34,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... [2018-10-26 19:44:34,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... [2018-10-26 19:44:34,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... [2018-10-26 19:44:34,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... [2018-10-26 19:44:34,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:44:34,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:44:34,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:44:34,777 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:44:34,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:44:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:44:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:44:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:44:41,711 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:44:41,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:44:41 BoogieIcfgContainer [2018-10-26 19:44:41,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:44:41,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:44:41,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:44:41,719 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:44:41,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:44:32" (1/3) ... [2018-10-26 19:44:41,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191860ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:44:41, skipping insertion in model container [2018-10-26 19:44:41,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:44:34" (2/3) ... [2018-10-26 19:44:41,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191860ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:44:41, skipping insertion in model container [2018-10-26 19:44:41,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:44:41" (3/3) ... [2018-10-26 19:44:41,723 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label38_false-unreach-call.c [2018-10-26 19:44:41,733 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:44:41,743 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:44:41,762 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:44:41,804 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:44:41,805 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:44:41,806 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:44:41,806 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:44:41,806 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:44:41,806 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:44:41,806 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:44:41,806 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:44:41,807 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:44:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-26 19:44:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 19:44:41,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:41,848 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:44:41,854 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:41,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1407492386, now seen corresponding path program 1 times [2018-10-26 19:44:41,865 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:41,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:41,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:41,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:41,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:44:42,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:44:42,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:44:42,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:44:42,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:44:42,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:44:42,258 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-26 19:44:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:53,346 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-10-26 19:44:53,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:44:53,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-26 19:44:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:53,391 INFO L225 Difference]: With dead ends: 2918 [2018-10-26 19:44:53,391 INFO L226 Difference]: Without dead ends: 2153 [2018-10-26 19:44:53,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:44:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-10-26 19:44:53,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-10-26 19:44:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-10-26 19:44:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3619 transitions. [2018-10-26 19:44:53,562 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3619 transitions. Word has length 21 [2018-10-26 19:44:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:44:53,563 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 3619 transitions. [2018-10-26 19:44:53,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:44:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3619 transitions. [2018-10-26 19:44:53,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-26 19:44:53,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:53,568 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:44:53,568 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:53,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:53,569 INFO L82 PathProgramCache]: Analyzing trace with hash -950809615, now seen corresponding path program 1 times [2018-10-26 19:44:53,569 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:53,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:53,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:53,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:53,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:44:53,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:44:53,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:44:53,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:44:53,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:44:53,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:44:53,835 INFO L87 Difference]: Start difference. First operand 2153 states and 3619 transitions. Second operand 4 states. [2018-10-26 19:45:02,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:02,319 INFO L93 Difference]: Finished difference Result 6377 states and 10776 transitions. [2018-10-26 19:45:02,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:45:02,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-10-26 19:45:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:02,349 INFO L225 Difference]: With dead ends: 6377 [2018-10-26 19:45:02,349 INFO L226 Difference]: Without dead ends: 4226 [2018-10-26 19:45:02,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-10-26 19:45:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-10-26 19:45:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-10-26 19:45:02,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 6043 transitions. [2018-10-26 19:45:02,442 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 6043 transitions. Word has length 87 [2018-10-26 19:45:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:02,443 INFO L481 AbstractCegarLoop]: Abstraction has 4226 states and 6043 transitions. [2018-10-26 19:45:02,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 6043 transitions. [2018-10-26 19:45:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-26 19:45:02,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:02,456 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:02,456 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:02,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash -542909622, now seen corresponding path program 1 times [2018-10-26 19:45:02,457 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:02,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:02,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:02,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:02,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:03,266 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-10-26 19:45:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-26 19:45:03,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:03,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:45:03,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:45:03,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:45:03,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:45:03,381 INFO L87 Difference]: Start difference. First operand 4226 states and 6043 transitions. Second operand 5 states. [2018-10-26 19:45:11,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:11,989 INFO L93 Difference]: Finished difference Result 13287 states and 18113 transitions. [2018-10-26 19:45:11,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:45:11,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2018-10-26 19:45:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:12,031 INFO L225 Difference]: With dead ends: 13287 [2018-10-26 19:45:12,031 INFO L226 Difference]: Without dead ends: 9063 [2018-10-26 19:45:12,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:45:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9063 states. [2018-10-26 19:45:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9063 to 8372. [2018-10-26 19:45:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8372 states. [2018-10-26 19:45:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 10467 transitions. [2018-10-26 19:45:12,201 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 10467 transitions. Word has length 206 [2018-10-26 19:45:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:12,202 INFO L481 AbstractCegarLoop]: Abstraction has 8372 states and 10467 transitions. [2018-10-26 19:45:12,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:45:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 10467 transitions. [2018-10-26 19:45:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-10-26 19:45:12,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:12,217 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:12,217 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:12,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:12,218 INFO L82 PathProgramCache]: Analyzing trace with hash -860925135, now seen corresponding path program 1 times [2018-10-26 19:45:12,218 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:12,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:12,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:12,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:12,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:12,938 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-26 19:45:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 268 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-26 19:45:13,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:45:13,110 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:45:13,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:13,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:45:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-26 19:45:13,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:45:13,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:45:13,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:45:13,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:45:13,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:45:13,560 INFO L87 Difference]: Start difference. First operand 8372 states and 10467 transitions. Second operand 6 states. [2018-10-26 19:45:26,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:26,689 INFO L93 Difference]: Finished difference Result 26432 states and 32780 transitions. [2018-10-26 19:45:26,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:45:26,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 389 [2018-10-26 19:45:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:26,749 INFO L225 Difference]: With dead ends: 26432 [2018-10-26 19:45:26,750 INFO L226 Difference]: Without dead ends: 15986 [2018-10-26 19:45:26,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:45:26,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15986 states. [2018-10-26 19:45:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15986 to 11810. [2018-10-26 19:45:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11810 states. [2018-10-26 19:45:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 13599 transitions. [2018-10-26 19:45:27,004 INFO L78 Accepts]: Start accepts. Automaton has 11810 states and 13599 transitions. Word has length 389 [2018-10-26 19:45:27,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:27,005 INFO L481 AbstractCegarLoop]: Abstraction has 11810 states and 13599 transitions. [2018-10-26 19:45:27,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:45:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 11810 states and 13599 transitions. [2018-10-26 19:45:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-26 19:45:27,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:27,014 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:27,014 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:27,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:27,015 INFO L82 PathProgramCache]: Analyzing trace with hash -24667633, now seen corresponding path program 1 times [2018-10-26 19:45:27,015 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:27,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:27,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:27,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:27,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-26 19:45:28,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:45:28,123 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 19:45:28,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:28,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:45:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-26 19:45:28,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:45:28,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 19:45:28,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:45:28,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:45:28,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:45:28,514 INFO L87 Difference]: Start difference. First operand 11810 states and 13599 transitions. Second operand 5 states. [2018-10-26 19:45:28,678 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 19:45:40,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:40,692 INFO L93 Difference]: Finished difference Result 47115 states and 55729 transitions. [2018-10-26 19:45:40,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:45:40,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 394 [2018-10-26 19:45:40,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:40,762 INFO L225 Difference]: With dead ends: 47115 [2018-10-26 19:45:40,762 INFO L226 Difference]: Without dead ends: 35307 [2018-10-26 19:45:40,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:45:40,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35307 states. [2018-10-26 19:45:41,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35307 to 34616. [2018-10-26 19:45:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34616 states. [2018-10-26 19:45:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34616 states to 34616 states and 39995 transitions. [2018-10-26 19:45:41,442 INFO L78 Accepts]: Start accepts. Automaton has 34616 states and 39995 transitions. Word has length 394 [2018-10-26 19:45:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:41,443 INFO L481 AbstractCegarLoop]: Abstraction has 34616 states and 39995 transitions. [2018-10-26 19:45:41,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:45:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 34616 states and 39995 transitions. [2018-10-26 19:45:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2018-10-26 19:45:41,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:41,480 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:41,480 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:41,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1816944839, now seen corresponding path program 1 times [2018-10-26 19:45:41,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:41,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:41,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:41,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:41,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-10-26 19:45:42,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:42,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:45:42,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:45:42,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:45:42,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:45:42,967 INFO L87 Difference]: Start difference. First operand 34616 states and 39995 transitions. Second operand 3 states. [2018-10-26 19:45:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:46,718 INFO L93 Difference]: Finished difference Result 68539 states and 79296 transitions. [2018-10-26 19:45:46,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:45:46,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1029 [2018-10-26 19:45:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:46,780 INFO L225 Difference]: With dead ends: 68539 [2018-10-26 19:45:46,781 INFO L226 Difference]: Without dead ends: 34616 [2018-10-26 19:45:46,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:45:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34616 states. [2018-10-26 19:45:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34616 to 34616. [2018-10-26 19:45:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34616 states. [2018-10-26 19:45:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34616 states to 34616 states and 38576 transitions. [2018-10-26 19:45:47,185 INFO L78 Accepts]: Start accepts. Automaton has 34616 states and 38576 transitions. Word has length 1029 [2018-10-26 19:45:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:47,187 INFO L481 AbstractCegarLoop]: Abstraction has 34616 states and 38576 transitions. [2018-10-26 19:45:47,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:45:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 34616 states and 38576 transitions. [2018-10-26 19:45:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2018-10-26 19:45:47,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:47,268 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:45:47,268 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:47,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:47,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1904474763, now seen corresponding path program 1 times [2018-10-26 19:45:47,269 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:47,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:47,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:47,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:47,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 631 proven. 0 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2018-10-26 19:45:48,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:48,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:45:48,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:45:48,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:45:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:48,892 INFO L87 Difference]: Start difference. First operand 34616 states and 38576 transitions. Second operand 4 states. [2018-10-26 19:45:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:53,908 INFO L93 Difference]: Finished difference Result 87887 states and 98563 transitions. [2018-10-26 19:45:53,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:45:53,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1209 [2018-10-26 19:45:53,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:53,989 INFO L225 Difference]: With dead ends: 87887 [2018-10-26 19:45:53,989 INFO L226 Difference]: Without dead ends: 48416 [2018-10-26 19:45:54,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:54,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48416 states. [2018-10-26 19:45:54,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48416 to 47725. [2018-10-26 19:45:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47725 states. [2018-10-26 19:45:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47725 states to 47725 states and 51902 transitions. [2018-10-26 19:45:54,756 INFO L78 Accepts]: Start accepts. Automaton has 47725 states and 51902 transitions. Word has length 1209 [2018-10-26 19:45:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:54,758 INFO L481 AbstractCegarLoop]: Abstraction has 47725 states and 51902 transitions. [2018-10-26 19:45:54,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 47725 states and 51902 transitions. [2018-10-26 19:45:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2018-10-26 19:45:54,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:54,788 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:54,788 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:54,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:54,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1245542691, now seen corresponding path program 1 times [2018-10-26 19:45:54,789 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:54,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:54,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:54,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:54,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:55,924 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-26 19:45:56,836 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-10-26 19:45:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1699 backedges. 862 proven. 750 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-26 19:45:59,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:45:59,530 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 19:45:59,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:59,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:46:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1699 backedges. 1005 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2018-10-26 19:46:00,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:46:00,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2018-10-26 19:46:00,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 19:46:00,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 19:46:00,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-10-26 19:46:00,798 INFO L87 Difference]: Start difference. First operand 47725 states and 51902 transitions. Second operand 13 states. [2018-10-26 19:46:03,461 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-10-26 19:46:05,729 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 19:46:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:30,417 INFO L93 Difference]: Finished difference Result 139118 states and 150993 transitions. [2018-10-26 19:46:30,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-26 19:46:30,417 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1242 [2018-10-26 19:46:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:30,565 INFO L225 Difference]: With dead ends: 139118 [2018-10-26 19:46:30,566 INFO L226 Difference]: Without dead ends: 92086 [2018-10-26 19:46:30,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 1265 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2018-10-26 19:46:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92086 states. [2018-10-26 19:46:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92086 to 64308. [2018-10-26 19:46:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64308 states. [2018-10-26 19:46:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64308 states to 64308 states and 69059 transitions. [2018-10-26 19:46:31,452 INFO L78 Accepts]: Start accepts. Automaton has 64308 states and 69059 transitions. Word has length 1242 [2018-10-26 19:46:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:31,452 INFO L481 AbstractCegarLoop]: Abstraction has 64308 states and 69059 transitions. [2018-10-26 19:46:31,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 19:46:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 64308 states and 69059 transitions. [2018-10-26 19:46:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1261 [2018-10-26 19:46:31,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:31,482 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:46:31,483 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:31,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:31,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1296922160, now seen corresponding path program 1 times [2018-10-26 19:46:31,483 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:31,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:31,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:31,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:31,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:32,543 WARN L179 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-26 19:46:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1789 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2018-10-26 19:46:33,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:46:33,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:46:33,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:46:33,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:46:33,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:33,257 INFO L87 Difference]: Start difference. First operand 64308 states and 69059 transitions. Second operand 4 states. [2018-10-26 19:46:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:38,116 INFO L93 Difference]: Finished difference Result 141051 states and 151823 transitions. [2018-10-26 19:46:38,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:46:38,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1260 [2018-10-26 19:46:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:38,182 INFO L225 Difference]: With dead ends: 141051 [2018-10-26 19:46:38,182 INFO L226 Difference]: Without dead ends: 77436 [2018-10-26 19:46:38,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:38,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77436 states. [2018-10-26 19:46:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77436 to 76745. [2018-10-26 19:46:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76745 states. [2018-10-26 19:46:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76745 states to 76745 states and 81167 transitions. [2018-10-26 19:46:38,804 INFO L78 Accepts]: Start accepts. Automaton has 76745 states and 81167 transitions. Word has length 1260 [2018-10-26 19:46:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:38,804 INFO L481 AbstractCegarLoop]: Abstraction has 76745 states and 81167 transitions. [2018-10-26 19:46:38,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:46:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 76745 states and 81167 transitions. [2018-10-26 19:46:38,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2018-10-26 19:46:38,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:38,826 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:38,827 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:38,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:38,827 INFO L82 PathProgramCache]: Analyzing trace with hash 214685907, now seen corresponding path program 1 times [2018-10-26 19:46:38,827 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:38,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:38,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:38,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:38,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:39,679 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:46:39,999 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-26 19:46:40,338 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-26 19:46:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 967 proven. 585 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-10-26 19:46:42,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:46:42,796 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 19:46:42,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:43,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:46:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 1101 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2018-10-26 19:46:44,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:46:44,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-26 19:46:44,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:46:44,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:46:44,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:46:44,716 INFO L87 Difference]: Start difference. First operand 76745 states and 81167 transitions. Second operand 10 states. [2018-10-26 19:47:01,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:01,810 INFO L93 Difference]: Finished difference Result 282462 states and 298620 transitions. [2018-10-26 19:47:01,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-26 19:47:01,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1274 [2018-10-26 19:47:01,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:02,042 INFO L225 Difference]: With dead ends: 282462 [2018-10-26 19:47:02,042 INFO L226 Difference]: Without dead ends: 187691 [2018-10-26 19:47:02,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 1286 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-10-26 19:47:02,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187691 states. [2018-10-26 19:47:03,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187691 to 76724. [2018-10-26 19:47:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76724 states. [2018-10-26 19:47:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76724 states to 76724 states and 79713 transitions. [2018-10-26 19:47:03,240 INFO L78 Accepts]: Start accepts. Automaton has 76724 states and 79713 transitions. Word has length 1274 [2018-10-26 19:47:03,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:03,241 INFO L481 AbstractCegarLoop]: Abstraction has 76724 states and 79713 transitions. [2018-10-26 19:47:03,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 19:47:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 76724 states and 79713 transitions. [2018-10-26 19:47:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1313 [2018-10-26 19:47:03,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:03,261 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:47:03,261 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:03,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:03,262 INFO L82 PathProgramCache]: Analyzing trace with hash -231780996, now seen corresponding path program 1 times [2018-10-26 19:47:03,262 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:03,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:03,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:03,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:03,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:03,985 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-26 19:47:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2135 backedges. 1164 proven. 0 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2018-10-26 19:47:04,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:47:04,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:47:04,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:47:04,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:47:04,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:47:04,799 INFO L87 Difference]: Start difference. First operand 76724 states and 79713 transitions. Second operand 4 states. [2018-10-26 19:47:09,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:09,613 INFO L93 Difference]: Finished difference Result 164502 states and 171151 transitions. [2018-10-26 19:47:09,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:47:09,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1312 [2018-10-26 19:47:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:09,724 INFO L225 Difference]: With dead ends: 164502 [2018-10-26 19:47:09,724 INFO L226 Difference]: Without dead ends: 88471 [2018-10-26 19:47:09,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:47:09,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88471 states. [2018-10-26 19:47:10,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88471 to 87089. [2018-10-26 19:47:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87089 states. [2018-10-26 19:47:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87089 states to 87089 states and 90239 transitions. [2018-10-26 19:47:10,917 INFO L78 Accepts]: Start accepts. Automaton has 87089 states and 90239 transitions. Word has length 1312 [2018-10-26 19:47:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:10,918 INFO L481 AbstractCegarLoop]: Abstraction has 87089 states and 90239 transitions. [2018-10-26 19:47:10,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:47:10,918 INFO L276 IsEmpty]: Start isEmpty. Operand 87089 states and 90239 transitions. [2018-10-26 19:47:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2018-10-26 19:47:10,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:10,956 INFO L375 BasicCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:47:10,957 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:10,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:10,957 INFO L82 PathProgramCache]: Analyzing trace with hash 805523431, now seen corresponding path program 1 times [2018-10-26 19:47:10,957 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:10,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:10,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:10,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:10,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 2029 proven. 0 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2018-10-26 19:47:12,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:47:12,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:47:12,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:47:12,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:47:12,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:47:12,629 INFO L87 Difference]: Start difference. First operand 87089 states and 90239 transitions. Second operand 4 states. [2018-10-26 19:47:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:18,180 INFO L93 Difference]: Finished difference Result 210104 states and 218499 transitions. [2018-10-26 19:47:18,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:47:18,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1551 [2018-10-26 19:47:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:18,335 INFO L225 Difference]: With dead ends: 210104 [2018-10-26 19:47:18,335 INFO L226 Difference]: Without dead ends: 123708 [2018-10-26 19:47:18,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:47:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123708 states. [2018-10-26 19:47:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123708 to 122326. [2018-10-26 19:47:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122326 states. [2018-10-26 19:47:19,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122326 states to 122326 states and 125797 transitions. [2018-10-26 19:47:19,873 INFO L78 Accepts]: Start accepts. Automaton has 122326 states and 125797 transitions. Word has length 1551 [2018-10-26 19:47:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:19,874 INFO L481 AbstractCegarLoop]: Abstraction has 122326 states and 125797 transitions. [2018-10-26 19:47:19,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:47:19,874 INFO L276 IsEmpty]: Start isEmpty. Operand 122326 states and 125797 transitions. [2018-10-26 19:47:19,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2018-10-26 19:47:19,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:19,915 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 19:47:19,916 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:19,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:19,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1219854873, now seen corresponding path program 1 times [2018-10-26 19:47:19,917 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:19,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:19,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:19,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:19,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:20,766 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:47:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3031 backedges. 899 proven. 0 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2018-10-26 19:47:22,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:47:22,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:47:22,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:47:22,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:47:22,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:47:22,098 INFO L87 Difference]: Start difference. First operand 122326 states and 125797 transitions. Second operand 3 states. [2018-10-26 19:47:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:47:25,622 INFO L93 Difference]: Finished difference Result 243266 states and 250251 transitions. [2018-10-26 19:47:25,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:47:25,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1583 [2018-10-26 19:47:25,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:47:25,745 INFO L225 Difference]: With dead ends: 243266 [2018-10-26 19:47:25,745 INFO L226 Difference]: Without dead ends: 120250 [2018-10-26 19:47:25,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:47:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120250 states. [2018-10-26 19:47:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120250 to 118868. [2018-10-26 19:47:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118868 states. [2018-10-26 19:47:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118868 states to 118868 states and 122015 transitions. [2018-10-26 19:47:26,891 INFO L78 Accepts]: Start accepts. Automaton has 118868 states and 122015 transitions. Word has length 1583 [2018-10-26 19:47:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:26,892 INFO L481 AbstractCegarLoop]: Abstraction has 118868 states and 122015 transitions. [2018-10-26 19:47:26,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:47:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 118868 states and 122015 transitions. [2018-10-26 19:47:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1674 [2018-10-26 19:47:26,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:26,957 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:47:26,957 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:26,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:26,958 INFO L82 PathProgramCache]: Analyzing trace with hash -897894694, now seen corresponding path program 1 times [2018-10-26 19:47:26,958 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:26,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:26,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:26,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:26,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1829 proven. 1266 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2018-10-26 19:47:32,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:47:32,655 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 19:47:32,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:33,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:47:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 2371 trivial. 0 not checked. [2018-10-26 19:47:34,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:47:34,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 18 [2018-10-26 19:47:34,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-26 19:47:34,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-26 19:47:34,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-10-26 19:47:34,402 INFO L87 Difference]: Start difference. First operand 118868 states and 122015 transitions. Second operand 18 states. Received shutdown request... [2018-10-26 19:48:19,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-26 19:48:19,989 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:48:19,995 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:48:19,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:48:19 BoogieIcfgContainer [2018-10-26 19:48:19,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:48:19,997 INFO L168 Benchmark]: Toolchain (without parser) took 227868.87 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 778.0 MB in the end (delta: 622.2 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-26 19:48:19,998 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-26 19:48:19,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1937.06 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: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:48:19,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 467.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -918.4 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:48:20,000 INFO L168 Benchmark]: Boogie Preprocessor took 240.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:48:20,001 INFO L168 Benchmark]: RCFGBuilder took 6937.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 515.9 MB). Peak memory consumption was 515.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:48:20,002 INFO L168 Benchmark]: TraceAbstraction took 218280.65 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 778.0 MB in the end (delta: 831.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-26 19:48:20,006 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1937.06 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: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 467.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -918.4 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 240.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6937.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 515.9 MB). Peak memory consumption was 515.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218280.65 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 778.0 MB in the end (delta: 831.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 69). Cancelled while BasicCegarLoop was constructing difference of abstraction (118868states) and FLOYD_HOARE automaton (currently 41 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (97649 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 218.2s OverallTime, 14 OverallIterations, 9 TraceHistogramMax, 174.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7877 SDtfs, 63741 SDslu, 2769 SDs, 0 SdLazy, 141696 SolverSat, 12909 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 137.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5199 GetRequests, 5050 SyntacticMatches, 15 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122326occurred in iteration=12, 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: 8.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 149831 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 18202 NumberOfCodeBlocks, 18202 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 18183 ConstructedInterpolants, 0 QuantifiedInterpolants, 67442445 SizeOfPredicates, 1 NumberOfNonLiveVariables, 5804 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 24479/27092 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown