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/Problem13_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:19:29,814 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:19:29,816 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:19:29,828 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:19:29,828 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:19:29,829 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:19:29,831 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:19:29,832 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:19:29,834 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:19:29,835 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:19:29,836 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:19:29,836 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:19:29,837 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:19:29,838 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:19:29,839 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:19:29,840 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:19:29,841 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:19:29,843 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:19:29,845 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:19:29,851 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:19:29,855 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:19:29,859 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:19:29,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:19:29,861 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:19:29,862 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:19:29,862 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:19:29,867 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:19:29,868 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:19:29,869 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:19:29,873 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:19:29,873 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:19:29,874 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:19:29,877 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 [2018-10-24 16:19:29,902 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:19:29,902 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:19:29,903 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:19:29,903 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:19:29,905 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:19:29,905 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:19:29,905 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:19:29,905 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:19:29,906 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:19:29,906 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:19:29,906 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:19:29,906 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:19:29,906 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:19:29,907 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:19:29,907 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:19:29,907 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:19:29,907 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:19:29,907 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:19:29,908 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:19:29,908 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:19:29,908 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:19:29,908 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:19:29,908 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:19:29,908 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:19:29,909 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:19:29,909 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:19:29,909 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:19:29,909 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:19:29,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:19:29,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:19:30,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:19:30,004 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:19:30,004 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:19:30,005 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08_true-unreach-call.c [2018-10-24 16:19:30,072 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c0206e619/a147ca3adb7747738447d7ec848eda63/FLAGe6a5c57a9 [2018-10-24 16:19:30,893 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:19:30,893 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label08_true-unreach-call.c [2018-10-24 16:19:30,927 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c0206e619/a147ca3adb7747738447d7ec848eda63/FLAGe6a5c57a9 [2018-10-24 16:19:30,943 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c0206e619/a147ca3adb7747738447d7ec848eda63 [2018-10-24 16:19:30,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:19:30,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:19:30,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:30,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:19:30,965 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:19:30,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:30" (1/1) ... [2018-10-24 16:19:30,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1086b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:30, skipping insertion in model container [2018-10-24 16:19:30,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:30" (1/1) ... [2018-10-24 16:19:30,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:19:31,183 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:19:32,632 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:32,639 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:19:33,356 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:33,402 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:19:33,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33 WrapperNode [2018-10-24 16:19:33,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:33,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:33,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:19:33,404 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:19:33,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (1/1) ... [2018-10-24 16:19:33,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (1/1) ... [2018-10-24 16:19:34,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:34,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:19:34,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:19:34,208 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:19:34,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (1/1) ... [2018-10-24 16:19:34,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (1/1) ... [2018-10-24 16:19:34,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (1/1) ... [2018-10-24 16:19:34,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (1/1) ... [2018-10-24 16:19:34,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (1/1) ... [2018-10-24 16:19:34,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (1/1) ... [2018-10-24 16:19:34,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (1/1) ... [2018-10-24 16:19:34,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:19:34,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:19:34,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:19:34,649 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:19:34,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (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 [2018-10-24 16:19:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:19:34,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:19:34,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:19:47,783 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:19:47,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:19:47 BoogieIcfgContainer [2018-10-24 16:19:47,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:19:47,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:19:47,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:19:47,788 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:19:47,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:19:30" (1/3) ... [2018-10-24 16:19:47,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e6156b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:19:47, skipping insertion in model container [2018-10-24 16:19:47,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:33" (2/3) ... [2018-10-24 16:19:47,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e6156b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:19:47, skipping insertion in model container [2018-10-24 16:19:47,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:19:47" (3/3) ... [2018-10-24 16:19:47,792 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label08_true-unreach-call.c [2018-10-24 16:19:47,802 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:19:47,811 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:19:47,829 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:19:47,874 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:19:47,875 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:19:47,875 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:19:47,875 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:19:47,875 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:19:47,875 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:19:47,875 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:19:47,875 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:19:47,875 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:19:47,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:19:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-24 16:19:47,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:47,927 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:47,929 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:47,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:47,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1316472986, now seen corresponding path program 1 times [2018-10-24 16:19:47,938 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:47,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:47,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:47,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:47,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:48,441 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 16:19:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:19:48,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:48,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:19:48,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:48,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:48,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:48,527 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:20:04,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:04,369 INFO L93 Difference]: Finished difference Result 3879 states and 7287 transitions. [2018-10-24 16:20:04,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:04,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-10-24 16:20:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:04,418 INFO L225 Difference]: With dead ends: 3879 [2018-10-24 16:20:04,419 INFO L226 Difference]: Without dead ends: 2773 [2018-10-24 16:20:04,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2018-10-24 16:20:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2742. [2018-10-24 16:20:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2742 states. [2018-10-24 16:20:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 4466 transitions. [2018-10-24 16:20:04,593 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 4466 transitions. Word has length 51 [2018-10-24 16:20:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:04,594 INFO L481 AbstractCegarLoop]: Abstraction has 2742 states and 4466 transitions. [2018-10-24 16:20:04,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 4466 transitions. [2018-10-24 16:20:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 16:20:04,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:04,602 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:04,602 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:04,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash -422253107, now seen corresponding path program 1 times [2018-10-24 16:20:04,603 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:04,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:04,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:04,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:04,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:05,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:05,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:20:05,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:05,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:05,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:05,178 INFO L87 Difference]: Start difference. First operand 2742 states and 4466 transitions. Second operand 5 states. [2018-10-24 16:20:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:24,320 INFO L93 Difference]: Finished difference Result 7903 states and 11941 transitions. [2018-10-24 16:20:24,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:20:24,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-10-24 16:20:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:24,347 INFO L225 Difference]: With dead ends: 7903 [2018-10-24 16:20:24,347 INFO L226 Difference]: Without dead ends: 5163 [2018-10-24 16:20:24,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2018-10-24 16:20:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 4329. [2018-10-24 16:20:24,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4329 states. [2018-10-24 16:20:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 6259 transitions. [2018-10-24 16:20:24,439 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 6259 transitions. Word has length 141 [2018-10-24 16:20:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:24,440 INFO L481 AbstractCegarLoop]: Abstraction has 4329 states and 6259 transitions. [2018-10-24 16:20:24,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 6259 transitions. [2018-10-24 16:20:24,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 16:20:24,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:24,444 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:24,445 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:24,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:24,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1408146749, now seen corresponding path program 1 times [2018-10-24 16:20:24,445 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:24,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:24,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:24,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:24,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:24,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:24,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:24,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:24,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:24,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:24,641 INFO L87 Difference]: Start difference. First operand 4329 states and 6259 transitions. Second operand 4 states. [2018-10-24 16:20:34,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:34,217 INFO L93 Difference]: Finished difference Result 15814 states and 23234 transitions. [2018-10-24 16:20:34,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:34,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-10-24 16:20:34,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:34,269 INFO L225 Difference]: With dead ends: 15814 [2018-10-24 16:20:34,269 INFO L226 Difference]: Without dead ends: 11487 [2018-10-24 16:20:34,275 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 [2018-10-24 16:20:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11487 states. [2018-10-24 16:20:34,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11487 to 11481. [2018-10-24 16:20:34,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11481 states. [2018-10-24 16:20:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 15626 transitions. [2018-10-24 16:20:34,480 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 15626 transitions. Word has length 152 [2018-10-24 16:20:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:34,480 INFO L481 AbstractCegarLoop]: Abstraction has 11481 states and 15626 transitions. [2018-10-24 16:20:34,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:34,481 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 15626 transitions. [2018-10-24 16:20:34,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 16:20:34,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:34,488 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:20:34,488 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:34,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:34,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1164637680, now seen corresponding path program 1 times [2018-10-24 16:20:34,491 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:34,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:34,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:34,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:34,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:35,156 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:20:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 119 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-24 16:20:35,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:35,433 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 [2018-10-24 16:20:35,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:35,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-10-24 16:20:35,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:35,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-24 16:20:35,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:20:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:20:35,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:20:35,787 INFO L87 Difference]: Start difference. First operand 11481 states and 15626 transitions. Second operand 6 states. [2018-10-24 16:20:52,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:52,209 INFO L93 Difference]: Finished difference Result 57631 states and 78123 transitions. [2018-10-24 16:20:52,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:20:52,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2018-10-24 16:20:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:52,339 INFO L225 Difference]: With dead ends: 57631 [2018-10-24 16:20:52,340 INFO L226 Difference]: Without dead ends: 46152 [2018-10-24 16:20:52,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:20:52,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46152 states. [2018-10-24 16:20:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46152 to 46150. [2018-10-24 16:20:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46150 states. [2018-10-24 16:20:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46150 states to 46150 states and 54728 transitions. [2018-10-24 16:20:53,233 INFO L78 Accepts]: Start accepts. Automaton has 46150 states and 54728 transitions. Word has length 214 [2018-10-24 16:20:53,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:53,233 INFO L481 AbstractCegarLoop]: Abstraction has 46150 states and 54728 transitions. [2018-10-24 16:20:53,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:20:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 46150 states and 54728 transitions. [2018-10-24 16:20:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-10-24 16:20:53,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:53,254 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:53,254 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:53,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:53,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1086486529, now seen corresponding path program 1 times [2018-10-24 16:20:53,255 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:53,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:53,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:53,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:53,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 528 proven. 9 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-10-24 16:20:54,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:54,344 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) [2018-10-24 16:20:54,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:20:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:54,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-10-24 16:20:54,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:54,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:20:54,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:54,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:54,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:54,739 INFO L87 Difference]: Start difference. First operand 46150 states and 54728 transitions. Second operand 5 states. [2018-10-24 16:21:07,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:07,742 INFO L93 Difference]: Finished difference Result 110441 states and 133773 transitions. [2018-10-24 16:21:07,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:21:07,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2018-10-24 16:21:07,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:07,844 INFO L225 Difference]: With dead ends: 110441 [2018-10-24 16:21:07,844 INFO L226 Difference]: Without dead ends: 65081 [2018-10-24 16:21:07,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:07,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65081 states. [2018-10-24 16:21:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65081 to 65058. [2018-10-24 16:21:08,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65058 states. [2018-10-24 16:21:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65058 states to 65058 states and 75080 transitions. [2018-10-24 16:21:08,683 INFO L78 Accepts]: Start accepts. Automaton has 65058 states and 75080 transitions. Word has length 411 [2018-10-24 16:21:08,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:08,684 INFO L481 AbstractCegarLoop]: Abstraction has 65058 states and 75080 transitions. [2018-10-24 16:21:08,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:21:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 65058 states and 75080 transitions. [2018-10-24 16:21:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-24 16:21:08,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:08,703 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:21:08,703 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:08,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:08,704 INFO L82 PathProgramCache]: Analyzing trace with hash -2100036450, now seen corresponding path program 1 times [2018-10-24 16:21:08,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:08,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:08,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:08,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:08,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:09,347 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:21:10,031 WARN L179 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:21:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 384 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-24 16:21:10,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:21:10,306 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 [2018-10-24 16:21:10,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:10,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:21:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-24 16:21:10,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:21:10,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 16:21:10,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:21:10,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:21:10,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:21:10,673 INFO L87 Difference]: Start difference. First operand 65058 states and 75080 transitions. Second operand 8 states. [2018-10-24 16:21:12,013 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 16:21:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:35,173 INFO L93 Difference]: Finished difference Result 170316 states and 196463 transitions. [2018-10-24 16:21:35,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:21:35,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 414 [2018-10-24 16:21:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:35,294 INFO L225 Difference]: With dead ends: 170316 [2018-10-24 16:21:35,294 INFO L226 Difference]: Without dead ends: 106048 [2018-10-24 16:21:35,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 418 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:21:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106048 states. [2018-10-24 16:21:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106048 to 98935. [2018-10-24 16:21:36,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98935 states. [2018-10-24 16:21:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98935 states to 98935 states and 110632 transitions. [2018-10-24 16:21:36,295 INFO L78 Accepts]: Start accepts. Automaton has 98935 states and 110632 transitions. Word has length 414 [2018-10-24 16:21:36,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:36,295 INFO L481 AbstractCegarLoop]: Abstraction has 98935 states and 110632 transitions. [2018-10-24 16:21:36,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:21:36,296 INFO L276 IsEmpty]: Start isEmpty. Operand 98935 states and 110632 transitions. [2018-10-24 16:21:36,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-10-24 16:21:36,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:36,321 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:36,321 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:36,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:36,322 INFO L82 PathProgramCache]: Analyzing trace with hash 215994102, now seen corresponding path program 1 times [2018-10-24 16:21:36,322 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:36,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:36,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:36,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:36,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:21:36,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:36,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:21:36,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:21:36,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:21:36,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:21:36,668 INFO L87 Difference]: Start difference. First operand 98935 states and 110632 transitions. Second operand 3 states. [2018-10-24 16:21:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:44,486 INFO L93 Difference]: Finished difference Result 197064 states and 220335 transitions. [2018-10-24 16:21:44,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:21:44,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 441 [2018-10-24 16:21:44,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:44,607 INFO L225 Difference]: With dead ends: 197064 [2018-10-24 16:21:44,607 INFO L226 Difference]: Without dead ends: 84685 [2018-10-24 16:21:44,664 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 [2018-10-24 16:21:44,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84685 states. [2018-10-24 16:21:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84685 to 83107. [2018-10-24 16:21:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83107 states. [2018-10-24 16:21:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83107 states to 83107 states and 90075 transitions. [2018-10-24 16:21:45,642 INFO L78 Accepts]: Start accepts. Automaton has 83107 states and 90075 transitions. Word has length 441 [2018-10-24 16:21:45,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:45,643 INFO L481 AbstractCegarLoop]: Abstraction has 83107 states and 90075 transitions. [2018-10-24 16:21:45,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:21:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 83107 states and 90075 transitions. [2018-10-24 16:21:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-10-24 16:21:45,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:45,663 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:21:45,664 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:45,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:45,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1531148240, now seen corresponding path program 1 times [2018-10-24 16:21:45,664 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:45,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:45,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:45,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:45,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 9 proven. 88 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 16:21:46,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:21:46,228 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 [2018-10-24 16:21:46,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:46,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:21:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 16:21:46,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:21:46,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-24 16:21:46,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:21:46,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:21:46,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:46,696 INFO L87 Difference]: Start difference. First operand 83107 states and 90075 transitions. Second operand 5 states. [2018-10-24 16:22:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:00,009 INFO L93 Difference]: Finished difference Result 238758 states and 258829 transitions. [2018-10-24 16:22:00,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:22:00,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2018-10-24 16:22:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:00,208 INFO L225 Difference]: With dead ends: 238758 [2018-10-24 16:22:00,209 INFO L226 Difference]: Without dead ends: 156441 [2018-10-24 16:22:00,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156441 states. [2018-10-24 16:22:01,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156441 to 149334. [2018-10-24 16:22:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149334 states. [2018-10-24 16:22:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149334 states to 149334 states and 159354 transitions. [2018-10-24 16:22:02,458 INFO L78 Accepts]: Start accepts. Automaton has 149334 states and 159354 transitions. Word has length 457 [2018-10-24 16:22:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:02,459 INFO L481 AbstractCegarLoop]: Abstraction has 149334 states and 159354 transitions. [2018-10-24 16:22:02,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand 149334 states and 159354 transitions. [2018-10-24 16:22:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-10-24 16:22:02,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:02,476 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:22:02,476 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:02,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:02,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1337138215, now seen corresponding path program 1 times [2018-10-24 16:22:02,477 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:02,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:02,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:02,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:02,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-10-24 16:22:02,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:02,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:02,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:22:02,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:22:02,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:02,815 INFO L87 Difference]: Start difference. First operand 149334 states and 159354 transitions. Second operand 5 states. [2018-10-24 16:22:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:23,115 INFO L93 Difference]: Finished difference Result 459710 states and 491165 transitions. [2018-10-24 16:22:23,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:22:23,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 502 [2018-10-24 16:22:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:23,449 INFO L225 Difference]: With dead ends: 459710 [2018-10-24 16:22:23,449 INFO L226 Difference]: Without dead ends: 309588 [2018-10-24 16:22:23,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:23,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309588 states. [2018-10-24 16:22:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309588 to 285736. [2018-10-24 16:22:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285736 states. [2018-10-24 16:22:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285736 states to 285736 states and 303322 transitions. [2018-10-24 16:22:27,462 INFO L78 Accepts]: Start accepts. Automaton has 285736 states and 303322 transitions. Word has length 502 [2018-10-24 16:22:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:27,462 INFO L481 AbstractCegarLoop]: Abstraction has 285736 states and 303322 transitions. [2018-10-24 16:22:27,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:27,463 INFO L276 IsEmpty]: Start isEmpty. Operand 285736 states and 303322 transitions. [2018-10-24 16:22:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2018-10-24 16:22:27,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:27,482 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2018-10-24 16:22:27,483 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:27,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:27,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1085181497, now seen corresponding path program 1 times [2018-10-24 16:22:27,483 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:27,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:27,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:27,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:27,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 16:22:27,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:27,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:27,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:27,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:27,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:27,980 INFO L87 Difference]: Start difference. First operand 285736 states and 303322 transitions. Second operand 4 states. [2018-10-24 16:22:38,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:38,540 INFO L93 Difference]: Finished difference Result 566698 states and 601967 transitions. [2018-10-24 16:22:38,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:38,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 539 [2018-10-24 16:22:38,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:38,884 INFO L225 Difference]: With dead ends: 566698 [2018-10-24 16:22:38,884 INFO L226 Difference]: Without dead ends: 281752 [2018-10-24 16:22:38,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281752 states. [2018-10-24 16:22:42,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281752 to 278598. [2018-10-24 16:22:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278598 states. [2018-10-24 16:22:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278598 states to 278598 states and 291026 transitions. [2018-10-24 16:22:42,644 INFO L78 Accepts]: Start accepts. Automaton has 278598 states and 291026 transitions. Word has length 539 [2018-10-24 16:22:42,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:42,645 INFO L481 AbstractCegarLoop]: Abstraction has 278598 states and 291026 transitions. [2018-10-24 16:22:42,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:42,645 INFO L276 IsEmpty]: Start isEmpty. Operand 278598 states and 291026 transitions. [2018-10-24 16:22:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2018-10-24 16:22:42,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:42,684 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:42,684 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:42,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:42,685 INFO L82 PathProgramCache]: Analyzing trace with hash 794298383, now seen corresponding path program 1 times [2018-10-24 16:22:42,685 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:42,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:42,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:42,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:42,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2018-10-24 16:22:45,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:45,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:45,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:45,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:45,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:45,452 INFO L87 Difference]: Start difference. First operand 278598 states and 291026 transitions. Second operand 4 states. [2018-10-24 16:23:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:05,839 INFO L93 Difference]: Finished difference Result 640872 states and 670258 transitions. [2018-10-24 16:23:05,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:05,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 794 [2018-10-24 16:23:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:06,258 INFO L225 Difference]: With dead ends: 640872 [2018-10-24 16:23:06,258 INFO L226 Difference]: Without dead ends: 361486 [2018-10-24 16:23:06,380 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 [2018-10-24 16:23:06,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361486 states. [2018-10-24 16:23:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361486 to 323522. [2018-10-24 16:23:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323522 states. [2018-10-24 16:23:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323522 states to 323522 states and 337030 transitions. [2018-10-24 16:23:11,410 INFO L78 Accepts]: Start accepts. Automaton has 323522 states and 337030 transitions. Word has length 794 [2018-10-24 16:23:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:11,411 INFO L481 AbstractCegarLoop]: Abstraction has 323522 states and 337030 transitions. [2018-10-24 16:23:11,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 323522 states and 337030 transitions. [2018-10-24 16:23:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2018-10-24 16:23:11,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:11,502 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:11,502 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:11,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash -909201759, now seen corresponding path program 1 times [2018-10-24 16:23:11,503 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:11,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:11,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:11,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:11,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 1061 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2018-10-24 16:23:13,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:13,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:13,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:13,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:13,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:13,237 INFO L87 Difference]: Start difference. First operand 323522 states and 337030 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 16:23:15,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:15,711 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:23:15,716 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:23:15,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:23:15 BoogieIcfgContainer [2018-10-24 16:23:15,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:23:15,717 INFO L168 Benchmark]: Toolchain (without parser) took 224762.10 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -713.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:15,718 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:23:15,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2444.37 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:15,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 802.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:15,721 INFO L168 Benchmark]: Boogie Preprocessor took 441.05 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:15,722 INFO L168 Benchmark]: RCFGBuilder took 13135.27 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 229.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 31.6 MB). Peak memory consumption was 594.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:15,723 INFO L168 Benchmark]: TraceAbstraction took 207931.98 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -44.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:15,728 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2444.37 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 802.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 441.05 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13135.27 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 229.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 31.6 MB). Peak memory consumption was 594.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207931.98 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -44.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (323522states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (2892 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 207.8s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 175.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10935 SDtfs, 38012 SDslu, 4051 SDs, 0 SdLazy, 74200 SolverSat, 16026 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 137.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1562 GetRequests, 1512 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323522occurred 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: 18.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 81664 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 6566 NumberOfCodeBlocks, 6566 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6550 ConstructedInterpolants, 0 QuantifiedInterpolants, 7220469 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1981 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 7171/7276 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown