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/Problem17_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:44:53,020 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:44:53,022 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:44:53,034 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:44:53,035 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:44:53,036 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:44:53,037 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:44:53,039 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:44:53,041 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:44:53,041 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:44:53,042 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:44:53,043 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:44:53,044 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:44:53,045 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:44:53,046 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:44:53,046 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:44:53,047 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:44:53,049 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:44:53,051 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:44:53,053 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:44:53,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:44:53,055 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:44:53,058 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:44:53,058 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:44:53,058 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:44:53,059 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:44:53,060 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:44:53,061 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:44:53,062 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:44:53,063 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:44:53,063 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:44:53,064 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:44:53,066 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 [2018-10-23 20:44:53,081 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:44:53,081 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:44:53,082 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:44:53,082 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:44:53,084 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:44:53,084 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:44:53,084 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:44:53,085 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:44:53,085 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:44:53,085 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:44:53,085 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:44:53,085 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:44:53,085 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:44:53,086 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:44:53,086 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:44:53,086 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:44:53,086 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:44:53,087 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:44:53,087 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:44:53,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:44:53,087 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:44:53,087 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:44:53,088 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:44:53,088 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:44:53,088 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:44:53,088 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:44:53,088 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:44:53,088 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:44:53,143 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:44:53,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:44:53,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:44:53,166 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:44:53,166 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:44:53,167 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c [2018-10-23 20:44:53,234 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3ebb39ed2/3c06a60573984e0dbd18d3e7b340eb69/FLAG2f14f9f2d [2018-10-23 20:44:53,960 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:44:53,962 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label27_true-unreach-call.c [2018-10-23 20:44:53,989 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3ebb39ed2/3c06a60573984e0dbd18d3e7b340eb69/FLAG2f14f9f2d [2018-10-23 20:44:54,013 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3ebb39ed2/3c06a60573984e0dbd18d3e7b340eb69 [2018-10-23 20:44:54,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:44:54,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:44:54,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:44:54,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:44:54,033 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:44:54,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:44:54" (1/1) ... [2018-10-23 20:44:54,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a144be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:54, skipping insertion in model container [2018-10-23 20:44:54,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:44:54" (1/1) ... [2018-10-23 20:44:54,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:44:54,184 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:44:55,288 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:44:55,292 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:44:55,694 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:44:55,720 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:44:55,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55 WrapperNode [2018-10-23 20:44:55,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:44:55,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:44:55,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:44:55,723 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:44:55,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (1/1) ... [2018-10-23 20:44:55,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (1/1) ... [2018-10-23 20:44:56,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:44:56,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:44:56,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:44:56,292 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:44:56,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (1/1) ... [2018-10-23 20:44:56,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (1/1) ... [2018-10-23 20:44:56,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (1/1) ... [2018-10-23 20:44:56,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (1/1) ... [2018-10-23 20:44:56,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (1/1) ... [2018-10-23 20:44:56,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (1/1) ... [2018-10-23 20:44:56,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (1/1) ... [2018-10-23 20:44:56,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:44:56,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:44:56,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:44:56,608 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:44:56,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (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 [2018-10-23 20:44:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:44:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:44:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:45:05,775 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:45:05,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:45:05 BoogieIcfgContainer [2018-10-23 20:45:05,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:45:05,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:45:05,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:45:05,781 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:45:05,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:44:54" (1/3) ... [2018-10-23 20:45:05,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ac9330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:45:05, skipping insertion in model container [2018-10-23 20:45:05,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:55" (2/3) ... [2018-10-23 20:45:05,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ac9330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:45:05, skipping insertion in model container [2018-10-23 20:45:05,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:45:05" (3/3) ... [2018-10-23 20:45:05,785 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label27_true-unreach-call.c [2018-10-23 20:45:05,795 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:45:05,805 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:45:05,823 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:45:05,868 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:45:05,868 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:45:05,869 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:45:05,869 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:45:05,869 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:45:05,869 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:45:05,869 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:45:05,869 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:45:05,870 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:45:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:45:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-23 20:45:05,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:05,915 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:45:05,917 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:05,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1057203130, now seen corresponding path program 1 times [2018-10-23 20:45:05,926 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:05,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:05,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:05,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:05,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:06,397 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 20:45:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:06,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:45:06,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:45:06,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:45:06,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:45:06,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:45:06,436 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:45:16,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:16,241 INFO L93 Difference]: Finished difference Result 2124 states and 3951 transitions. [2018-10-23 20:45:16,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:45:16,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-23 20:45:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:16,279 INFO L225 Difference]: With dead ends: 2124 [2018-10-23 20:45:16,279 INFO L226 Difference]: Without dead ends: 1526 [2018-10-23 20:45:16,287 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 [2018-10-23 20:45:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2018-10-23 20:45:16,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1032. [2018-10-23 20:45:16,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-10-23 20:45:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1858 transitions. [2018-10-23 20:45:16,421 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1858 transitions. Word has length 42 [2018-10-23 20:45:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:16,422 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1858 transitions. [2018-10-23 20:45:16,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:45:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1858 transitions. [2018-10-23 20:45:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-23 20:45:16,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:16,427 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:45:16,427 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:16,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1079967214, now seen corresponding path program 1 times [2018-10-23 20:45:16,428 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:16,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:16,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:16,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:16,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:16,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:45:16,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:45:16,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:45:16,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:45:16,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:45:16,607 INFO L87 Difference]: Start difference. First operand 1032 states and 1858 transitions. Second operand 4 states. [2018-10-23 20:45:23,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:23,553 INFO L93 Difference]: Finished difference Result 2924 states and 5354 transitions. [2018-10-23 20:45:23,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:45:23,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-23 20:45:23,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:23,565 INFO L225 Difference]: With dead ends: 2924 [2018-10-23 20:45:23,565 INFO L226 Difference]: Without dead ends: 1894 [2018-10-23 20:45:23,568 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 [2018-10-23 20:45:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2018-10-23 20:45:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1894. [2018-10-23 20:45:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1894 states. [2018-10-23 20:45:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2838 transitions. [2018-10-23 20:45:23,617 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2838 transitions. Word has length 110 [2018-10-23 20:45:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:23,618 INFO L481 AbstractCegarLoop]: Abstraction has 1894 states and 2838 transitions. [2018-10-23 20:45:23,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:45:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2838 transitions. [2018-10-23 20:45:23,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-23 20:45:23,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:23,628 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:45:23,628 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:23,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:23,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2142067975, now seen corresponding path program 1 times [2018-10-23 20:45:23,631 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:23,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:23,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:23,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:23,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:23,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:45:23,966 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 [2018-10-23 20:45:23,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:24,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:45:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:24,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:45:24,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:45:24,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:45:24,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:45:24,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:45:24,324 INFO L87 Difference]: Start difference. First operand 1894 states and 2838 transitions. Second operand 6 states. [2018-10-23 20:45:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:38,449 INFO L93 Difference]: Finished difference Result 9410 states and 14055 transitions. [2018-10-23 20:45:38,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:45:38,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-10-23 20:45:38,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:38,479 INFO L225 Difference]: With dead ends: 9410 [2018-10-23 20:45:38,479 INFO L226 Difference]: Without dead ends: 5774 [2018-10-23 20:45:38,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:45:38,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5774 states. [2018-10-23 20:45:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5774 to 4910. [2018-10-23 20:45:38,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4910 states. [2018-10-23 20:45:38,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 6417 transitions. [2018-10-23 20:45:38,582 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 6417 transitions. Word has length 113 [2018-10-23 20:45:38,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:38,583 INFO L481 AbstractCegarLoop]: Abstraction has 4910 states and 6417 transitions. [2018-10-23 20:45:38,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:45:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 6417 transitions. [2018-10-23 20:45:38,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-23 20:45:38,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:38,586 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:45:38,587 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:38,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:38,587 INFO L82 PathProgramCache]: Analyzing trace with hash 300432979, now seen corresponding path program 1 times [2018-10-23 20:45:38,587 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:38,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:38,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:38,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:38,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:38,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:45:38,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:45:38,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:45:38,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:45:38,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:45:38,786 INFO L87 Difference]: Start difference. First operand 4910 states and 6417 transitions. Second operand 4 states. [2018-10-23 20:45:42,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:42,895 INFO L93 Difference]: Finished difference Result 12370 states and 16715 transitions. [2018-10-23 20:45:42,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:45:42,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2018-10-23 20:45:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:42,935 INFO L225 Difference]: With dead ends: 12370 [2018-10-23 20:45:42,936 INFO L226 Difference]: Without dead ends: 7897 [2018-10-23 20:45:42,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:45:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2018-10-23 20:45:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7471. [2018-10-23 20:45:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7471 states. [2018-10-23 20:45:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7471 states to 7471 states and 9537 transitions. [2018-10-23 20:45:43,083 INFO L78 Accepts]: Start accepts. Automaton has 7471 states and 9537 transitions. Word has length 200 [2018-10-23 20:45:43,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:43,083 INFO L481 AbstractCegarLoop]: Abstraction has 7471 states and 9537 transitions. [2018-10-23 20:45:43,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:45:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 7471 states and 9537 transitions. [2018-10-23 20:45:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-23 20:45:43,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:43,217 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:45:43,217 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:43,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:43,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1648358704, now seen corresponding path program 1 times [2018-10-23 20:45:43,218 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:43,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:43,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:43,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:43,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 363 proven. 83 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-23 20:45:43,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:45:43,898 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 [2018-10-23 20:45:43,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:44,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:45:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 363 proven. 83 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-23 20:45:44,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:45:44,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-23 20:45:44,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:45:44,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:45:44,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:45:44,405 INFO L87 Difference]: Start difference. First operand 7471 states and 9537 transitions. Second operand 7 states. [2018-10-23 20:46:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:46:02,303 INFO L93 Difference]: Finished difference Result 29069 states and 36237 transitions. [2018-10-23 20:46:02,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:46:02,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2018-10-23 20:46:02,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:46:02,369 INFO L225 Difference]: With dead ends: 29069 [2018-10-23 20:46:02,369 INFO L226 Difference]: Without dead ends: 16374 [2018-10-23 20:46:02,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:46:02,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16374 states. [2018-10-23 20:46:02,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16374 to 15932. [2018-10-23 20:46:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15932 states. [2018-10-23 20:46:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15932 states to 15932 states and 18244 transitions. [2018-10-23 20:46:02,669 INFO L78 Accepts]: Start accepts. Automaton has 15932 states and 18244 transitions. Word has length 368 [2018-10-23 20:46:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:46:02,670 INFO L481 AbstractCegarLoop]: Abstraction has 15932 states and 18244 transitions. [2018-10-23 20:46:02,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:46:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 15932 states and 18244 transitions. [2018-10-23 20:46:02,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-10-23 20:46:02,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:46:02,701 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:46:02,702 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:46:02,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:46:02,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1984007499, now seen corresponding path program 1 times [2018-10-23 20:46:02,702 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:46:02,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:46:02,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:02,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:02,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-10-23 20:46:03,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:46:03,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:46:03,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:46:03,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:46:03,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:46:03,316 INFO L87 Difference]: Start difference. First operand 15932 states and 18244 transitions. Second operand 3 states. [2018-10-23 20:46:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:46:06,802 INFO L93 Difference]: Finished difference Result 36554 states and 42002 transitions. [2018-10-23 20:46:06,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:46:06,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 648 [2018-10-23 20:46:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:46:06,841 INFO L225 Difference]: With dead ends: 36554 [2018-10-23 20:46:06,841 INFO L226 Difference]: Without dead ends: 21050 [2018-10-23 20:46:06,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:46:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21050 states. [2018-10-23 20:46:07,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21050 to 20194. [2018-10-23 20:46:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20194 states. [2018-10-23 20:46:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20194 states to 20194 states and 22945 transitions. [2018-10-23 20:46:07,141 INFO L78 Accepts]: Start accepts. Automaton has 20194 states and 22945 transitions. Word has length 648 [2018-10-23 20:46:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:46:07,142 INFO L481 AbstractCegarLoop]: Abstraction has 20194 states and 22945 transitions. [2018-10-23 20:46:07,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:46:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 20194 states and 22945 transitions. [2018-10-23 20:46:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2018-10-23 20:46:07,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:46:07,177 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:46:07,178 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:46:07,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:46:07,178 INFO L82 PathProgramCache]: Analyzing trace with hash -5632952, now seen corresponding path program 1 times [2018-10-23 20:46:07,178 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:46:07,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:46:07,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:07,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:07,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2018-10-23 20:46:07,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:46:07,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:46:07,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:46:07,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:46:07,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:46:07,834 INFO L87 Difference]: Start difference. First operand 20194 states and 22945 transitions. Second operand 3 states. [2018-10-23 20:46:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:46:11,631 INFO L93 Difference]: Finished difference Result 54454 states and 61884 transitions. [2018-10-23 20:46:11,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:46:11,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 673 [2018-10-23 20:46:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:46:11,692 INFO L225 Difference]: With dead ends: 54454 [2018-10-23 20:46:11,693 INFO L226 Difference]: Without dead ends: 34688 [2018-10-23 20:46:11,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:46:11,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34688 states. [2018-10-23 20:46:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34688 to 33820. [2018-10-23 20:46:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33820 states. [2018-10-23 20:46:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33820 states to 33820 states and 38340 transitions. [2018-10-23 20:46:12,381 INFO L78 Accepts]: Start accepts. Automaton has 33820 states and 38340 transitions. Word has length 673 [2018-10-23 20:46:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:46:12,382 INFO L481 AbstractCegarLoop]: Abstraction has 33820 states and 38340 transitions. [2018-10-23 20:46:12,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:46:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 33820 states and 38340 transitions. [2018-10-23 20:46:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2018-10-23 20:46:12,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:46:12,447 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:46:12,447 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:46:12,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:46:12,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1300457331, now seen corresponding path program 1 times [2018-10-23 20:46:12,448 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:46:12,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:46:12,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:12,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:12,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2018-10-23 20:46:13,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:46:13,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:46:13,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:46:13,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:46:13,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:46:13,504 INFO L87 Difference]: Start difference. First operand 33820 states and 38340 transitions. Second operand 3 states. [2018-10-23 20:46:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:46:18,152 INFO L93 Difference]: Finished difference Result 80847 states and 91948 transitions. [2018-10-23 20:46:18,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:46:18,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 811 [2018-10-23 20:46:18,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:46:18,213 INFO L225 Difference]: With dead ends: 80847 [2018-10-23 20:46:18,213 INFO L226 Difference]: Without dead ends: 47455 [2018-10-23 20:46:18,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:46:18,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47455 states. [2018-10-23 20:46:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47455 to 46599. [2018-10-23 20:46:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46599 states. [2018-10-23 20:46:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46599 states to 46599 states and 51898 transitions. [2018-10-23 20:46:18,811 INFO L78 Accepts]: Start accepts. Automaton has 46599 states and 51898 transitions. Word has length 811 [2018-10-23 20:46:18,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:46:18,812 INFO L481 AbstractCegarLoop]: Abstraction has 46599 states and 51898 transitions. [2018-10-23 20:46:18,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:46:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 46599 states and 51898 transitions. [2018-10-23 20:46:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2018-10-23 20:46:18,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:46:18,887 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:46:18,887 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:46:18,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:46:18,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1397390877, now seen corresponding path program 1 times [2018-10-23 20:46:18,888 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:46:18,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:46:18,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:18,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:18,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 159 proven. 572 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-23 20:46:20,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:46:20,907 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 [2018-10-23 20:46:20,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:21,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:46:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 491 proven. 241 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-23 20:46:23,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:46:23,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-23 20:46:23,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:46:23,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:46:23,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:46:23,080 INFO L87 Difference]: Start difference. First operand 46599 states and 51898 transitions. Second operand 8 states. [2018-10-23 20:46:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:46:36,351 INFO L93 Difference]: Finished difference Result 105144 states and 116464 transitions. [2018-10-23 20:46:36,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:46:36,352 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 853 [2018-10-23 20:46:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:46:36,427 INFO L225 Difference]: With dead ends: 105144 [2018-10-23 20:46:36,427 INFO L226 Difference]: Without dead ends: 57263 [2018-10-23 20:46:36,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 851 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:46:36,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57263 states. [2018-10-23 20:46:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57263 to 42747. [2018-10-23 20:46:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42747 states. [2018-10-23 20:46:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42747 states to 42747 states and 46674 transitions. [2018-10-23 20:46:36,978 INFO L78 Accepts]: Start accepts. Automaton has 42747 states and 46674 transitions. Word has length 853 [2018-10-23 20:46:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:46:36,979 INFO L481 AbstractCegarLoop]: Abstraction has 42747 states and 46674 transitions. [2018-10-23 20:46:36,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:46:36,979 INFO L276 IsEmpty]: Start isEmpty. Operand 42747 states and 46674 transitions. [2018-10-23 20:46:37,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2018-10-23 20:46:37,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:46:37,043 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:46:37,043 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:46:37,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:46:37,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2134074976, now seen corresponding path program 1 times [2018-10-23 20:46:37,044 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:46:37,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:46:37,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:37,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:37,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 1036 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-23 20:46:38,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:46:38,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:46:38,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:46:38,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:46:38,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:46:38,651 INFO L87 Difference]: Start difference. First operand 42747 states and 46674 transitions. Second operand 5 states. [2018-10-23 20:46:44,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:46:44,764 INFO L93 Difference]: Finished difference Result 100437 states and 109718 transitions. [2018-10-23 20:46:44,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:46:44,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 899 [2018-10-23 20:46:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:46:44,830 INFO L225 Difference]: With dead ends: 100437 [2018-10-23 20:46:44,831 INFO L226 Difference]: Without dead ends: 58118 [2018-10-23 20:46:44,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:46:44,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58118 states. [2018-10-23 20:46:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58118 to 45314. [2018-10-23 20:46:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45314 states. [2018-10-23 20:46:45,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45314 states to 45314 states and 49490 transitions. [2018-10-23 20:46:45,314 INFO L78 Accepts]: Start accepts. Automaton has 45314 states and 49490 transitions. Word has length 899 [2018-10-23 20:46:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:46:45,315 INFO L481 AbstractCegarLoop]: Abstraction has 45314 states and 49490 transitions. [2018-10-23 20:46:45,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:46:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand 45314 states and 49490 transitions. [2018-10-23 20:46:45,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2018-10-23 20:46:45,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:46:45,349 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:46:45,349 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:46:45,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:46:45,349 INFO L82 PathProgramCache]: Analyzing trace with hash -504770416, now seen corresponding path program 1 times [2018-10-23 20:46:45,350 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:46:45,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:46:45,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:45,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:45,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:46:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 759 proven. 490 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-23 20:46:50,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:46:50,282 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 [2018-10-23 20:46:50,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:46:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:46:50,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:46:51,382 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:46:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 976 proven. 246 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-23 20:46:53,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:46:53,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 17 [2018-10-23 20:46:53,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-23 20:46:53,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-23 20:46:53,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-10-23 20:46:53,152 INFO L87 Difference]: Start difference. First operand 45314 states and 49490 transitions. Second operand 17 states. [2018-10-23 20:46:53,342 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-23 20:46:57,319 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2018-10-23 20:47:02,219 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2018-10-23 20:47:03,327 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2018-10-23 20:47:19,898 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-10-23 20:47:26,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:47:26,112 INFO L93 Difference]: Finished difference Result 112693 states and 122940 transitions. [2018-10-23 20:47:26,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-23 20:47:26,112 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 900 [2018-10-23 20:47:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:47:26,181 INFO L225 Difference]: With dead ends: 112693 [2018-10-23 20:47:26,181 INFO L226 Difference]: Without dead ends: 67804 [2018-10-23 20:47:26,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 948 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1167, Invalid=3945, Unknown=0, NotChecked=0, Total=5112 [2018-10-23 20:47:26,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67804 states. [2018-10-23 20:47:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67804 to 57775. [2018-10-23 20:47:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57775 states. [2018-10-23 20:47:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57775 states to 57775 states and 61342 transitions. [2018-10-23 20:47:26,819 INFO L78 Accepts]: Start accepts. Automaton has 57775 states and 61342 transitions. Word has length 900 [2018-10-23 20:47:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:47:26,820 INFO L481 AbstractCegarLoop]: Abstraction has 57775 states and 61342 transitions. [2018-10-23 20:47:26,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-23 20:47:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 57775 states and 61342 transitions. [2018-10-23 20:47:26,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-10-23 20:47:26,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:47:26,861 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:47:26,862 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:47:26,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:47:26,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1563677524, now seen corresponding path program 1 times [2018-10-23 20:47:26,862 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:47:26,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:47:26,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:47:26,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:47:26,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:47:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:47:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 1177 proven. 241 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-23 20:47:28,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:47:28,493 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 [2018-10-23 20:47:28,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:47:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:47:28,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:47:31,777 WARN L179 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 113 DAG size of output: 16 [2018-10-23 20:47:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 1336 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2018-10-23 20:47:32,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:47:32,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-10-23 20:47:32,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:47:32,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:47:32,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:47:32,486 INFO L87 Difference]: Start difference. First operand 57775 states and 61342 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 20:49:00,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 20:49:00,013 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:49:00,020 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:49:00,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:49:00 BoogieIcfgContainer [2018-10-23 20:49:00,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:49:00,021 INFO L168 Benchmark]: Toolchain (without parser) took 245995.19 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 353.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:00,023 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 20:49:00,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1692.99 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: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:00,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 568.55 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 736.1 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -859.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:00,025 INFO L168 Benchmark]: Boogie Preprocessor took 315.65 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:00,026 INFO L168 Benchmark]: RCFGBuilder took 9168.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 483.3 MB). Peak memory consumption was 483.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:00,026 INFO L168 Benchmark]: TraceAbstraction took 234243.25 ms. Allocated memory was 2.2 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 3.5 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:49:00,031 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1692.99 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: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 568.55 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 736.1 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -859.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 315.65 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9168.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 483.3 MB). Peak memory consumption was 483.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234243.25 ms. Allocated memory was 2.2 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 3.5 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 131). Cancelled while BasicCegarLoop was constructing difference of abstraction (57775states) and FLOYD_HOARE automaton (currently 17 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (109254 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 234.1s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 205.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3567 SDtfs, 34481 SDslu, 2724 SDs, 0 SdLazy, 66635 SolverSat, 10942 SolverUnsat, 28 SolverUnknown, 0 SolverNotchecked, 181.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3491 GetRequests, 3368 SyntacticMatches, 8 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57775occurred in iteration=11, 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: 3.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 42155 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 9991 NumberOfCodeBlocks, 9991 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 9974 ConstructedInterpolants, 323 QuantifiedInterpolants, 44021252 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4021 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 11641/13636 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown