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_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:15:18,304 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:15:18,306 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:15:18,321 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:15:18,322 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:15:18,323 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:15:18,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:15:18,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:15:18,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:15:18,328 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:15:18,329 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:15:18,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:15:18,331 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:15:18,332 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:15:18,333 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:15:18,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:15:18,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:15:18,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:15:18,339 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:15:18,340 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:15:18,341 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:15:18,345 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:15:18,351 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:15:18,364 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 20:15:18,378 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:15:18,379 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:15:18,380 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:15:18,380 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:15:18,380 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:15:18,381 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:15:18,381 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:15:18,381 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:15:18,381 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:15:18,381 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:15:18,382 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:15:18,382 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:15:18,382 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:15:18,382 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:15:18,382 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:15:18,383 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:15:18,383 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:15:18,383 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:15:18,383 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:15:18,383 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:15:18,384 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:15:18,384 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:15:18,384 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:15:18,384 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:15:18,384 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:15:18,384 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:15:18,385 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:15:18,385 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:15:18,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:15:18,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:15:18,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:15:18,455 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:15:18,458 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:15:18,459 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-10-23 20:15:18,516 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/09fc20908/efbf7c7e55694d8cb5e1c9164d05580f/FLAG306f7ffa6 [2018-10-23 20:15:19,421 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:15:19,422 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label03_true-unreach-call.c [2018-10-23 20:15:19,458 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/09fc20908/efbf7c7e55694d8cb5e1c9164d05580f/FLAG306f7ffa6 [2018-10-23 20:15:19,479 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/09fc20908/efbf7c7e55694d8cb5e1c9164d05580f [2018-10-23 20:15:19,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:15:19,493 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:15:19,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:15:19,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:15:19,501 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:15:19,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:15:19" (1/1) ... [2018-10-23 20:15:19,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd5a079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:19, skipping insertion in model container [2018-10-23 20:15:19,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:15:19" (1/1) ... [2018-10-23 20:15:19,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:15:19,715 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:15:21,305 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:15:21,311 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:15:22,135 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:15:22,169 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:15:22,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22 WrapperNode [2018-10-23 20:15:22,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:15:22,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:15:22,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:15:22,171 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:15:22,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (1/1) ... [2018-10-23 20:15:22,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (1/1) ... [2018-10-23 20:15:22,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:15:22,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:15:22,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:15:22,945 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:15:22,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (1/1) ... [2018-10-23 20:15:22,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (1/1) ... [2018-10-23 20:15:23,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (1/1) ... [2018-10-23 20:15:23,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (1/1) ... [2018-10-23 20:15:23,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (1/1) ... [2018-10-23 20:15:23,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (1/1) ... [2018-10-23 20:15:23,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (1/1) ... [2018-10-23 20:15:23,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:15:23,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:15:23,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:15:23,443 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:15:23,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (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 20:15:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:15:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:15:23,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:15:38,675 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:15:38,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:15:38 BoogieIcfgContainer [2018-10-23 20:15:38,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:15:38,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:15:38,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:15:38,681 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:15:38,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:15:19" (1/3) ... [2018-10-23 20:15:38,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50509e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:15:38, skipping insertion in model container [2018-10-23 20:15:38,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:15:22" (2/3) ... [2018-10-23 20:15:38,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50509e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:15:38, skipping insertion in model container [2018-10-23 20:15:38,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:15:38" (3/3) ... [2018-10-23 20:15:38,685 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label03_true-unreach-call.c [2018-10-23 20:15:38,695 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:15:38,705 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:15:38,723 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:15:38,768 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:15:38,768 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:15:38,769 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:15:38,769 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:15:38,769 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:15:38,769 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:15:38,769 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:15:38,769 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:15:38,770 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:15:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:15:38,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-23 20:15:38,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:15:38,820 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] [2018-10-23 20:15:38,823 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:15:38,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:15:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1433927590, now seen corresponding path program 1 times [2018-10-23 20:15:38,832 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:15:38,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:15:38,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:38,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:15:38,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:15:39,263 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 20:15:39,273 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 20:15:39,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:15:39,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:15:39,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:15:39,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:15:39,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:15:39,302 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 20:15:53,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:15:53,714 INFO L93 Difference]: Finished difference Result 3993 states and 7498 transitions. [2018-10-23 20:15:53,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:15:53,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-23 20:15:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:15:53,765 INFO L225 Difference]: With dead ends: 3993 [2018-10-23 20:15:53,766 INFO L226 Difference]: Without dead ends: 2887 [2018-10-23 20:15:53,777 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 20:15:53,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2018-10-23 20:15:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1936. [2018-10-23 20:15:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2018-10-23 20:15:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 3550 transitions. [2018-10-23 20:15:53,942 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 3550 transitions. Word has length 35 [2018-10-23 20:15:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:15:53,943 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 3550 transitions. [2018-10-23 20:15:53,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:15:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 3550 transitions. [2018-10-23 20:15:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-23 20:15:53,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:15:53,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:53,949 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:15:53,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:15:53,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1015454466, now seen corresponding path program 1 times [2018-10-23 20:15:53,950 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:15:53,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:15:53,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:53,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:15:53,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:15:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:15:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:15:54,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:15:54,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:15:54,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:15:54,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:15:54,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:15:54,256 INFO L87 Difference]: Start difference. First operand 1936 states and 3550 transitions. Second operand 4 states. [2018-10-23 20:16:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:07,101 INFO L93 Difference]: Finished difference Result 7120 states and 13344 transitions. [2018-10-23 20:16:07,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:16:07,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2018-10-23 20:16:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:07,131 INFO L225 Difference]: With dead ends: 7120 [2018-10-23 20:16:07,131 INFO L226 Difference]: Without dead ends: 5186 [2018-10-23 20:16:07,136 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 20:16:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2018-10-23 20:16:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 3554. [2018-10-23 20:16:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2018-10-23 20:16:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 6248 transitions. [2018-10-23 20:16:07,226 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 6248 transitions. Word has length 104 [2018-10-23 20:16:07,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:07,227 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 6248 transitions. [2018-10-23 20:16:07,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:16:07,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 6248 transitions. [2018-10-23 20:16:07,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 20:16:07,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:07,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:07,232 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:07,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:07,233 INFO L82 PathProgramCache]: Analyzing trace with hash 204454873, now seen corresponding path program 1 times [2018-10-23 20:16:07,233 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:07,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:07,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:07,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:07,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:16:07,396 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:07,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:16:07,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:16:07,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:16:07,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:07,398 INFO L87 Difference]: Start difference. First operand 3554 states and 6248 transitions. Second operand 4 states. [2018-10-23 20:16:20,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:20,529 INFO L93 Difference]: Finished difference Result 12674 states and 22438 transitions. [2018-10-23 20:16:20,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:16:20,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-23 20:16:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:20,577 INFO L225 Difference]: With dead ends: 12674 [2018-10-23 20:16:20,577 INFO L226 Difference]: Without dead ends: 9122 [2018-10-23 20:16:20,584 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 20:16:20,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2018-10-23 20:16:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 9115. [2018-10-23 20:16:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2018-10-23 20:16:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 14199 transitions. [2018-10-23 20:16:20,768 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 14199 transitions. Word has length 117 [2018-10-23 20:16:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:20,769 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 14199 transitions. [2018-10-23 20:16:20,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:16:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 14199 transitions. [2018-10-23 20:16:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-23 20:16:20,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:20,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:20,773 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:20,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:20,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1472006328, now seen corresponding path program 1 times [2018-10-23 20:16:20,773 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:20,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:20,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:20,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:20,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:21,260 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:16:22,205 WARN L179 SmtUtils]: Spent 894.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:16:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:16:22,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:22,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:16:22,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:16:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:16:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:16:22,305 INFO L87 Difference]: Start difference. First operand 9115 states and 14199 transitions. Second operand 5 states. [2018-10-23 20:16:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:35,505 INFO L93 Difference]: Finished difference Result 29264 states and 45079 transitions. [2018-10-23 20:16:35,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:16:35,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-10-23 20:16:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:35,578 INFO L225 Difference]: With dead ends: 29264 [2018-10-23 20:16:35,579 INFO L226 Difference]: Without dead ends: 20151 [2018-10-23 20:16:35,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:16:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2018-10-23 20:16:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 20149. [2018-10-23 20:16:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20149 states. [2018-10-23 20:16:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20149 states to 20149 states and 28284 transitions. [2018-10-23 20:16:35,968 INFO L78 Accepts]: Start accepts. Automaton has 20149 states and 28284 transitions. Word has length 138 [2018-10-23 20:16:35,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:35,969 INFO L481 AbstractCegarLoop]: Abstraction has 20149 states and 28284 transitions. [2018-10-23 20:16:35,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:16:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 20149 states and 28284 transitions. [2018-10-23 20:16:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-23 20:16:35,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:35,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:35,975 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:35,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:35,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2000787026, now seen corresponding path program 1 times [2018-10-23 20:16:35,975 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:35,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:35,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:35,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:35,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-23 20:16:36,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:16:36,495 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 20:16:36,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:36,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:16:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-23 20:16:36,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:16:36,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 20:16:36,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:16:36,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:16:36,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:16:36,836 INFO L87 Difference]: Start difference. First operand 20149 states and 28284 transitions. Second operand 5 states. [2018-10-23 20:16:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:52,431 INFO L93 Difference]: Finished difference Result 69485 states and 98351 transitions. [2018-10-23 20:16:52,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:16:52,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-10-23 20:16:52,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:52,547 INFO L225 Difference]: With dead ends: 69485 [2018-10-23 20:16:52,547 INFO L226 Difference]: Without dead ends: 50126 [2018-10-23 20:16:52,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 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 20:16:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50126 states. [2018-10-23 20:16:53,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50126 to 50100. [2018-10-23 20:16:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50100 states. [2018-10-23 20:16:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50100 states to 50100 states and 64534 transitions. [2018-10-23 20:16:53,649 INFO L78 Accepts]: Start accepts. Automaton has 50100 states and 64534 transitions. Word has length 161 [2018-10-23 20:16:53,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:53,650 INFO L481 AbstractCegarLoop]: Abstraction has 50100 states and 64534 transitions. [2018-10-23 20:16:53,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:16:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 50100 states and 64534 transitions. [2018-10-23 20:16:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-10-23 20:16:53,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:53,682 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:53,683 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:53,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:53,683 INFO L82 PathProgramCache]: Analyzing trace with hash -96016346, now seen corresponding path program 1 times [2018-10-23 20:16:53,683 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:53,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:53,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:53,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:53,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-10-23 20:16:54,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:54,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:16:54,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:16:54,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:16:54,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:54,414 INFO L87 Difference]: Start difference. First operand 50100 states and 64534 transitions. Second operand 4 states. [2018-10-23 20:17:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:06,362 INFO L93 Difference]: Finished difference Result 145896 states and 190404 transitions. [2018-10-23 20:17:06,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:06,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 488 [2018-10-23 20:17:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:06,505 INFO L225 Difference]: With dead ends: 145896 [2018-10-23 20:17:06,506 INFO L226 Difference]: Without dead ends: 96586 [2018-10-23 20:17:06,565 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 20:17:06,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96586 states. [2018-10-23 20:17:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96586 to 96582. [2018-10-23 20:17:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96582 states. [2018-10-23 20:17:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96582 states to 96582 states and 118394 transitions. [2018-10-23 20:17:07,728 INFO L78 Accepts]: Start accepts. Automaton has 96582 states and 118394 transitions. Word has length 488 [2018-10-23 20:17:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:07,729 INFO L481 AbstractCegarLoop]: Abstraction has 96582 states and 118394 transitions. [2018-10-23 20:17:07,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 96582 states and 118394 transitions. [2018-10-23 20:17:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-10-23 20:17:07,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:07,804 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:07,804 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:07,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:07,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1612327390, now seen corresponding path program 1 times [2018-10-23 20:17:07,805 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:07,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:07,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:07,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:07,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-23 20:17:08,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:08,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:17:08,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:17:08,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:17:08,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:17:08,511 INFO L87 Difference]: Start difference. First operand 96582 states and 118394 transitions. Second operand 5 states. [2018-10-23 20:17:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:32,369 INFO L93 Difference]: Finished difference Result 285661 states and 345385 transitions. [2018-10-23 20:17:32,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:17:32,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 644 [2018-10-23 20:17:32,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:32,658 INFO L225 Difference]: With dead ends: 285661 [2018-10-23 20:17:32,658 INFO L226 Difference]: Without dead ends: 189869 [2018-10-23 20:17:32,748 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 [2018-10-23 20:17:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189869 states. [2018-10-23 20:17:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189869 to 185747. [2018-10-23 20:17:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185747 states. [2018-10-23 20:17:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185747 states to 185747 states and 218624 transitions. [2018-10-23 20:17:34,860 INFO L78 Accepts]: Start accepts. Automaton has 185747 states and 218624 transitions. Word has length 644 [2018-10-23 20:17:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:34,861 INFO L481 AbstractCegarLoop]: Abstraction has 185747 states and 218624 transitions. [2018-10-23 20:17:34,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:17:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 185747 states and 218624 transitions. [2018-10-23 20:17:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2018-10-23 20:17:34,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:34,966 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:17:34,967 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:34,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:34,967 INFO L82 PathProgramCache]: Analyzing trace with hash 341540048, now seen corresponding path program 1 times [2018-10-23 20:17:34,967 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:34,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:34,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:34,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:34,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-10-23 20:17:36,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:36,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:17:36,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:36,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:36,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:36,887 INFO L87 Difference]: Start difference. First operand 185747 states and 218624 transitions. Second operand 4 states. [2018-10-23 20:17:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:52,089 INFO L93 Difference]: Finished difference Result 417211 states and 492612 transitions. [2018-10-23 20:17:52,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:52,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 655 [2018-10-23 20:17:52,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:52,369 INFO L225 Difference]: With dead ends: 417211 [2018-10-23 20:17:52,369 INFO L226 Difference]: Without dead ends: 232254 [2018-10-23 20:17:52,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232254 states. [2018-10-23 20:17:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232254 to 223538. [2018-10-23 20:17:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223538 states. [2018-10-23 20:17:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223538 states to 223538 states and 254241 transitions. [2018-10-23 20:17:55,637 INFO L78 Accepts]: Start accepts. Automaton has 223538 states and 254241 transitions. Word has length 655 [2018-10-23 20:17:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:55,638 INFO L481 AbstractCegarLoop]: Abstraction has 223538 states and 254241 transitions. [2018-10-23 20:17:55,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 223538 states and 254241 transitions. [2018-10-23 20:17:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2018-10-23 20:17:55,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:55,703 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:55,704 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:55,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:55,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1309523719, now seen corresponding path program 1 times [2018-10-23 20:17:55,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:55,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:55,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:55,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:55,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:17:58,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:58,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 20:17:58,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:17:58,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:17:58,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:17:58,345 INFO L87 Difference]: Start difference. First operand 223538 states and 254241 transitions. Second operand 7 states. [2018-10-23 20:18:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:14,540 INFO L93 Difference]: Finished difference Result 474500 states and 538985 transitions. [2018-10-23 20:18:14,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:18:14,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 764 [2018-10-23 20:18:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:14,854 INFO L225 Difference]: With dead ends: 474500 [2018-10-23 20:18:14,854 INFO L226 Difference]: Without dead ends: 251752 [2018-10-23 20:18:14,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:18:15,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251752 states. [2018-10-23 20:18:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251752 to 222738. [2018-10-23 20:18:18,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222738 states. [2018-10-23 20:18:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222738 states to 222738 states and 245688 transitions. [2018-10-23 20:18:18,601 INFO L78 Accepts]: Start accepts. Automaton has 222738 states and 245688 transitions. Word has length 764 [2018-10-23 20:18:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:18,603 INFO L481 AbstractCegarLoop]: Abstraction has 222738 states and 245688 transitions. [2018-10-23 20:18:18,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:18:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 222738 states and 245688 transitions. [2018-10-23 20:18:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-10-23 20:18:18,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:18,654 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:18:18,654 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:18,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:18,655 INFO L82 PathProgramCache]: Analyzing trace with hash -288772535, now seen corresponding path program 1 times [2018-10-23 20:18:18,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:18,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:18,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:18,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:18,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 801 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-23 20:18:20,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:20,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:18:20,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:18:20,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:18:20,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:20,690 INFO L87 Difference]: Start difference. First operand 222738 states and 245688 transitions. Second operand 4 states. [2018-10-23 20:18:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:40,268 INFO L93 Difference]: Finished difference Result 486471 states and 537173 transitions. [2018-10-23 20:18:40,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:40,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 771 [2018-10-23 20:18:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:40,598 INFO L225 Difference]: With dead ends: 486471 [2018-10-23 20:18:40,598 INFO L226 Difference]: Without dead ends: 264523 [2018-10-23 20:18:40,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264523 states. [2018-10-23 20:18:43,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264523 to 257400. [2018-10-23 20:18:43,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257400 states. [2018-10-23 20:18:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257400 states to 257400 states and 278712 transitions. [2018-10-23 20:18:44,068 INFO L78 Accepts]: Start accepts. Automaton has 257400 states and 278712 transitions. Word has length 771 [2018-10-23 20:18:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:44,069 INFO L481 AbstractCegarLoop]: Abstraction has 257400 states and 278712 transitions. [2018-10-23 20:18:44,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:18:44,069 INFO L276 IsEmpty]: Start isEmpty. Operand 257400 states and 278712 transitions. [2018-10-23 20:18:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2018-10-23 20:18:44,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:44,156 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:18:44,157 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:44,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:44,157 INFO L82 PathProgramCache]: Analyzing trace with hash -538306718, now seen corresponding path program 1 times [2018-10-23 20:18:44,157 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:44,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:44,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:44,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:44,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1574 backedges. 899 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-10-23 20:18:45,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:45,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:18:45,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:18:45,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:18:45,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:45,469 INFO L87 Difference]: Start difference. First operand 257400 states and 278712 transitions. Second operand 4 states. [2018-10-23 20:18:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:55,096 INFO L93 Difference]: Finished difference Result 526617 states and 570104 transitions. [2018-10-23 20:18:55,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:55,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 949 [2018-10-23 20:18:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:55,364 INFO L225 Difference]: With dead ends: 526617 [2018-10-23 20:18:55,364 INFO L226 Difference]: Without dead ends: 234493 [2018-10-23 20:18:55,460 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 20:18:55,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234493 states. [2018-10-23 20:18:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234493 to 220302. [2018-10-23 20:18:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220302 states. [2018-10-23 20:18:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220302 states to 220302 states and 235805 transitions. [2018-10-23 20:18:58,257 INFO L78 Accepts]: Start accepts. Automaton has 220302 states and 235805 transitions. Word has length 949 [2018-10-23 20:18:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:58,257 INFO L481 AbstractCegarLoop]: Abstraction has 220302 states and 235805 transitions. [2018-10-23 20:18:58,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:18:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 220302 states and 235805 transitions. [2018-10-23 20:18:58,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-10-23 20:18:58,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:58,324 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-10-23 20:18:58,325 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:58,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:58,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1189776815, now seen corresponding path program 1 times [2018-10-23 20:18:58,326 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:58,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:58,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:58,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:58,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:59,096 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 20:19:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2064 backedges. 1491 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2018-10-23 20:19:00,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:00,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:00,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:00,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:00,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:00,756 INFO L87 Difference]: Start difference. First operand 220302 states and 235805 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 20:19:03,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:03,540 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:19:03,545 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:19:03,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:19:03 BoogieIcfgContainer [2018-10-23 20:19:03,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:19:03,546 INFO L168 Benchmark]: Toolchain (without parser) took 224054.06 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -704.4 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 20:19:03,547 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:19:03,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2675.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:03,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 773.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 808.5 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:03,549 INFO L168 Benchmark]: Boogie Preprocessor took 498.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:03,550 INFO L168 Benchmark]: RCFGBuilder took 15232.99 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 239.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 600.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:19:03,551 INFO L168 Benchmark]: TraceAbstraction took 204868.04 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -43.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 20:19:03,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2675.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 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 773.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 808.5 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 498.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15232.99 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 239.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 600.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204868.04 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -43.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 114). Cancelled while BasicCegarLoop was constructing difference of abstraction (220302states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (6282 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 204.7s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 171.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8180 SDtfs, 27111 SDslu, 3904 SDs, 0 SdLazy, 63009 SolverSat, 16819 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 141.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 219 GetRequests, 179 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257400occurred in iteration=10, 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: 17.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 65788 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 6057 NumberOfCodeBlocks, 6057 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 6044 ConstructedInterpolants, 0 QuantifiedInterpolants, 9319554 SizeOfPredicates, 1 NumberOfNonLiveVariables, 230 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 7213/7215 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown