java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:45:25,261 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:45:25,263 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:45:25,282 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:45:25,282 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:45:25,283 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:45:25,286 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:45:25,288 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:45:25,291 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:45:25,291 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:45:25,295 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:45:25,296 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:45:25,297 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:45:25,298 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:45:25,299 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:45:25,307 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:45:25,308 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:45:25,313 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:45:25,316 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:45:25,317 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:45:25,322 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:45:25,323 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:45:25,326 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:45:25,326 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:45:25,327 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:45:25,328 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:45:25,329 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:45:25,329 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:45:25,332 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:45:25,333 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:45:25,334 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:45:25,334 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 19:45:25,334 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 19:45:25,336 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 19:45:25,337 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 19:45:25,338 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 19:45:25,339 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:45:25,371 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:45:25,371 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:45:25,372 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:45:25,372 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:45:25,374 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:45:25,374 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:45:25,374 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:45:25,375 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:45:25,375 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:45:25,375 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:45:25,375 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:45:25,375 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:45:25,375 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:45:25,377 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:45:25,377 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:45:25,377 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:45:25,377 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:45:25,377 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:45:25,378 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:45:25,378 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:45:25,378 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:45:25,378 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:45:25,378 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:45:25,380 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:45:25,380 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:45:25,380 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:45:25,381 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:45:25,381 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:45:25,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:45:25,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:45:25,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:45:25,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:45:25,461 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:45:25,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-11-06 19:45:25,518 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff6b244c9/49c9cce494544cfba2b734a4ca15f523/FLAG36f81f785 [2018-11-06 19:45:26,491 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:45:26,493 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-11-06 19:45:26,549 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff6b244c9/49c9cce494544cfba2b734a4ca15f523/FLAG36f81f785 [2018-11-06 19:45:26,570 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff6b244c9/49c9cce494544cfba2b734a4ca15f523 [2018-11-06 19:45:26,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:45:26,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:45:26,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:45:26,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:45:26,593 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:45:26,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:45:26" (1/1) ... [2018-11-06 19:45:26,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465fd05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:26, skipping insertion in model container [2018-11-06 19:45:26,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:45:26" (1/1) ... [2018-11-06 19:45:26,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:45:26,872 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:45:29,007 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:45:29,016 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:45:30,167 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:45:30,226 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:45:30,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30 WrapperNode [2018-11-06 19:45:30,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:45:30,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:45:30,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:45:30,228 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:45:30,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... [2018-11-06 19:45:30,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... [2018-11-06 19:45:31,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:45:31,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:45:31,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:45:31,413 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:45:31,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... [2018-11-06 19:45:31,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... [2018-11-06 19:45:31,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... [2018-11-06 19:45:31,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... [2018-11-06 19:45:31,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... [2018-11-06 19:45:31,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... [2018-11-06 19:45:32,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... [2018-11-06 19:45:32,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:45:32,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:45:32,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:45:32,145 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:45:32,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:45:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:45:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:45:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:45:49,331 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:45:49,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:45:49 BoogieIcfgContainer [2018-11-06 19:45:49,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:45:49,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:45:49,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:45:49,335 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:45:49,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:45:26" (1/3) ... [2018-11-06 19:45:49,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5596a449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:45:49, skipping insertion in model container [2018-11-06 19:45:49,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:45:30" (2/3) ... [2018-11-06 19:45:49,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5596a449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:45:49, skipping insertion in model container [2018-11-06 19:45:49,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:45:49" (3/3) ... [2018-11-06 19:45:49,339 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label50_false-unreach-call.c [2018-11-06 19:45:49,349 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:45:49,359 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:45:49,376 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:45:49,427 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:45:49,428 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:45:49,429 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:45:49,429 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:45:49,429 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:45:49,429 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:45:49,429 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:45:49,429 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:45:49,429 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:45:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 19:45:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-06 19:45:49,490 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:49,491 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:45:49,493 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:49,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:49,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1407492386, now seen corresponding path program 1 times [2018-11-06 19:45:49,502 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:49,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:49,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:49,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:49,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:45:49,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:45:49,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:45:49,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:45:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:45:49,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:45:49,895 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 19:46:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:11,272 INFO L93 Difference]: Finished difference Result 6322 states and 12078 transitions. [2018-11-06 19:46:11,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:46:11,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-06 19:46:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:11,334 INFO L225 Difference]: With dead ends: 6322 [2018-11-06 19:46:11,334 INFO L226 Difference]: Without dead ends: 4566 [2018-11-06 19:46:11,343 INFO L604 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 [2018-11-06 19:46:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-11-06 19:46:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4562. [2018-11-06 19:46:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4562 states. [2018-11-06 19:46:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 7763 transitions. [2018-11-06 19:46:11,552 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 7763 transitions. Word has length 21 [2018-11-06 19:46:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:11,552 INFO L480 AbstractCegarLoop]: Abstraction has 4562 states and 7763 transitions. [2018-11-06 19:46:11,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:46:11,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 7763 transitions. [2018-11-06 19:46:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-06 19:46:11,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:11,557 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:11,557 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:11,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:11,558 INFO L82 PathProgramCache]: Analyzing trace with hash -540128311, now seen corresponding path program 1 times [2018-11-06 19:46:11,558 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:11,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:11,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:11,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:11,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:46:11,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:46:11,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:46:11,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:46:11,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:46:11,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:11,897 INFO L87 Difference]: Start difference. First operand 4562 states and 7763 transitions. Second operand 4 states. [2018-11-06 19:46:32,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:32,331 INFO L93 Difference]: Finished difference Result 17536 states and 30099 transitions. [2018-11-06 19:46:32,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:46:32,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2018-11-06 19:46:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:32,397 INFO L225 Difference]: With dead ends: 17536 [2018-11-06 19:46:32,397 INFO L226 Difference]: Without dead ends: 12976 [2018-11-06 19:46:32,406 INFO L604 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 [2018-11-06 19:46:32,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2018-11-06 19:46:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 8660. [2018-11-06 19:46:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8660 states. [2018-11-06 19:46:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14380 transitions. [2018-11-06 19:46:32,604 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14380 transitions. Word has length 91 [2018-11-06 19:46:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:32,604 INFO L480 AbstractCegarLoop]: Abstraction has 8660 states and 14380 transitions. [2018-11-06 19:46:32,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:46:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14380 transitions. [2018-11-06 19:46:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-06 19:46:32,608 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:32,609 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:32,609 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:32,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:32,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1353721238, now seen corresponding path program 1 times [2018-11-06 19:46:32,610 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:32,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:32,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:32,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:32,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:46:32,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:46:32,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:46:32,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:46:32,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:46:32,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:32,993 INFO L87 Difference]: Start difference. First operand 8660 states and 14380 transitions. Second operand 4 states. [2018-11-06 19:46:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:48,417 INFO L93 Difference]: Finished difference Result 33813 states and 56473 transitions. [2018-11-06 19:46:48,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:46:48,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-11-06 19:46:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:48,501 INFO L225 Difference]: With dead ends: 33813 [2018-11-06 19:46:48,501 INFO L226 Difference]: Without dead ends: 25155 [2018-11-06 19:46:48,514 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:48,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25155 states. [2018-11-06 19:46:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25155 to 16865. [2018-11-06 19:46:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16865 states. [2018-11-06 19:46:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 24314 transitions. [2018-11-06 19:46:48,845 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 24314 transitions. Word has length 113 [2018-11-06 19:46:48,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:48,847 INFO L480 AbstractCegarLoop]: Abstraction has 16865 states and 24314 transitions. [2018-11-06 19:46:48,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:46:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 24314 transitions. [2018-11-06 19:46:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-06 19:46:48,853 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:48,857 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:48,857 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:48,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:48,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2048785476, now seen corresponding path program 1 times [2018-11-06 19:46:48,858 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:48,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:48,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:48,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:48,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:49,128 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:46:49,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:46:49,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:46:49,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:46:49,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:46:49,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:49,130 INFO L87 Difference]: Start difference. First operand 16865 states and 24314 transitions. Second operand 4 states. [2018-11-06 19:47:04,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:04,844 INFO L93 Difference]: Finished difference Result 65426 states and 94868 transitions. [2018-11-06 19:47:04,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:04,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-11-06 19:47:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:04,926 INFO L225 Difference]: With dead ends: 65426 [2018-11-06 19:47:04,927 INFO L226 Difference]: Without dead ends: 48563 [2018-11-06 19:47:04,952 INFO L604 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 [2018-11-06 19:47:04,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48563 states. [2018-11-06 19:47:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48563 to 48550. [2018-11-06 19:47:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48550 states. [2018-11-06 19:47:05,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48550 states to 48550 states and 63472 transitions. [2018-11-06 19:47:05,597 INFO L78 Accepts]: Start accepts. Automaton has 48550 states and 63472 transitions. Word has length 122 [2018-11-06 19:47:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:05,598 INFO L480 AbstractCegarLoop]: Abstraction has 48550 states and 63472 transitions. [2018-11-06 19:47:05,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:47:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 48550 states and 63472 transitions. [2018-11-06 19:47:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-06 19:47:05,600 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:05,601 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:47:05,601 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:05,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:05,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1069929104, now seen corresponding path program 1 times [2018-11-06 19:47:05,602 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:05,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:05,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:05,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:05,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-06 19:47:05,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:05,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:47:05,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:47:05,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:47:05,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:05,972 INFO L87 Difference]: Start difference. First operand 48550 states and 63472 transitions. Second operand 4 states. [2018-11-06 19:47:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:19,404 INFO L93 Difference]: Finished difference Result 112127 states and 144774 transitions. [2018-11-06 19:47:19,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:19,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2018-11-06 19:47:19,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:19,486 INFO L225 Difference]: With dead ends: 112127 [2018-11-06 19:47:19,486 INFO L226 Difference]: Without dead ends: 63579 [2018-11-06 19:47:19,531 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:19,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63579 states. [2018-11-06 19:47:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63579 to 63570. [2018-11-06 19:47:20,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63570 states. [2018-11-06 19:47:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63570 states to 63570 states and 77358 transitions. [2018-11-06 19:47:20,270 INFO L78 Accepts]: Start accepts. Automaton has 63570 states and 77358 transitions. Word has length 184 [2018-11-06 19:47:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:20,271 INFO L480 AbstractCegarLoop]: Abstraction has 63570 states and 77358 transitions. [2018-11-06 19:47:20,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:47:20,271 INFO L276 IsEmpty]: Start isEmpty. Operand 63570 states and 77358 transitions. [2018-11-06 19:47:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2018-11-06 19:47:20,294 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:20,296 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:47:20,296 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:20,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:20,299 INFO L82 PathProgramCache]: Analyzing trace with hash -134132952, now seen corresponding path program 1 times [2018-11-06 19:47:20,299 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:20,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:20,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:20,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:20,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:21,482 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-06 19:47:22,072 WARN L179 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-11-06 19:47:22,702 WARN L179 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-11-06 19:47:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-11-06 19:47:24,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:24,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-06 19:47:24,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:47:24,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:47:24,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:47:24,454 INFO L87 Difference]: Start difference. First operand 63570 states and 77358 transitions. Second operand 8 states. [2018-11-06 19:47:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:44,252 INFO L93 Difference]: Finished difference Result 174483 states and 212363 transitions. [2018-11-06 19:47:44,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 19:47:44,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 757 [2018-11-06 19:47:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:44,360 INFO L225 Difference]: With dead ends: 174483 [2018-11-06 19:47:44,360 INFO L226 Difference]: Without dead ends: 110915 [2018-11-06 19:47:44,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-11-06 19:47:44,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110915 states. [2018-11-06 19:47:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110915 to 64936. [2018-11-06 19:47:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64936 states. [2018-11-06 19:47:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64936 states to 64936 states and 78730 transitions. [2018-11-06 19:47:45,287 INFO L78 Accepts]: Start accepts. Automaton has 64936 states and 78730 transitions. Word has length 757 [2018-11-06 19:47:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:45,289 INFO L480 AbstractCegarLoop]: Abstraction has 64936 states and 78730 transitions. [2018-11-06 19:47:45,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:47:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 64936 states and 78730 transitions. [2018-11-06 19:47:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2018-11-06 19:47:45,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:45,323 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:47:45,323 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:45,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:45,324 INFO L82 PathProgramCache]: Analyzing trace with hash -76367971, now seen corresponding path program 1 times [2018-11-06 19:47:45,324 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:45,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:45,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:45,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:45,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-11-06 19:47:47,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:47,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:47:47,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:47:47,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:47:47,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:47:47,156 INFO L87 Difference]: Start difference. First operand 64936 states and 78730 transitions. Second operand 5 states. [2018-11-06 19:48:11,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:11,987 INFO L93 Difference]: Finished difference Result 231136 states and 284218 transitions. [2018-11-06 19:48:11,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:48:11,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 876 [2018-11-06 19:48:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:12,200 INFO L225 Difference]: With dead ends: 231136 [2018-11-06 19:48:12,200 INFO L226 Difference]: Without dead ends: 167568 [2018-11-06 19:48:12,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:48:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167568 states. [2018-11-06 19:48:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167568 to 127786. [2018-11-06 19:48:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127786 states. [2018-11-06 19:48:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127786 states to 127786 states and 154602 transitions. [2018-11-06 19:48:13,533 INFO L78 Accepts]: Start accepts. Automaton has 127786 states and 154602 transitions. Word has length 876 [2018-11-06 19:48:13,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:13,534 INFO L480 AbstractCegarLoop]: Abstraction has 127786 states and 154602 transitions. [2018-11-06 19:48:13,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:48:13,534 INFO L276 IsEmpty]: Start isEmpty. Operand 127786 states and 154602 transitions. [2018-11-06 19:48:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2018-11-06 19:48:13,548 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:13,549 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:48:13,549 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:13,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:13,549 INFO L82 PathProgramCache]: Analyzing trace with hash -339119137, now seen corresponding path program 1 times [2018-11-06 19:48:13,550 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:13,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:13,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:13,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:13,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-11-06 19:48:15,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:48:15,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:48:15,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:48:15,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:48:15,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:48:15,074 INFO L87 Difference]: Start difference. First operand 127786 states and 154602 transitions. Second operand 4 states. [2018-11-06 19:48:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:27,506 INFO L93 Difference]: Finished difference Result 254197 states and 307823 transitions. [2018-11-06 19:48:27,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:48:27,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 934 [2018-11-06 19:48:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:27,644 INFO L225 Difference]: With dead ends: 254197 [2018-11-06 19:48:27,644 INFO L226 Difference]: Without dead ends: 127779 [2018-11-06 19:48:27,699 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:48:27,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127779 states. [2018-11-06 19:48:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127779 to 116844. [2018-11-06 19:48:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116844 states. [2018-11-06 19:48:28,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116844 states to 116844 states and 134220 transitions. [2018-11-06 19:48:28,731 INFO L78 Accepts]: Start accepts. Automaton has 116844 states and 134220 transitions. Word has length 934 [2018-11-06 19:48:28,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:28,732 INFO L480 AbstractCegarLoop]: Abstraction has 116844 states and 134220 transitions. [2018-11-06 19:48:28,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:48:28,732 INFO L276 IsEmpty]: Start isEmpty. Operand 116844 states and 134220 transitions. [2018-11-06 19:48:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2018-11-06 19:48:28,746 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:28,747 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:48:28,748 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:28,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:28,748 INFO L82 PathProgramCache]: Analyzing trace with hash -315963517, now seen corresponding path program 1 times [2018-11-06 19:48:28,748 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:28,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:28,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:28,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:28,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:29,550 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-06 19:48:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-11-06 19:48:30,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:48:30,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:48:30,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:48:30,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:48:30,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:48:30,570 INFO L87 Difference]: Start difference. First operand 116844 states and 134220 transitions. Second operand 3 states. [2018-11-06 19:48:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:40,569 INFO L93 Difference]: Finished difference Result 269201 states and 309863 transitions. [2018-11-06 19:48:40,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:48:40,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 960 [2018-11-06 19:48:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:40,748 INFO L225 Difference]: With dead ends: 269201 [2018-11-06 19:48:40,748 INFO L226 Difference]: Without dead ends: 153725 [2018-11-06 19:48:40,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:48:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153725 states. [2018-11-06 19:48:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153725 to 146894. [2018-11-06 19:48:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146894 states. [2018-11-06 19:48:41,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146894 states to 146894 states and 167209 transitions. [2018-11-06 19:48:41,965 INFO L78 Accepts]: Start accepts. Automaton has 146894 states and 167209 transitions. Word has length 960 [2018-11-06 19:48:41,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:41,966 INFO L480 AbstractCegarLoop]: Abstraction has 146894 states and 167209 transitions. [2018-11-06 19:48:41,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:48:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 146894 states and 167209 transitions. [2018-11-06 19:48:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2018-11-06 19:48:41,982 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:41,982 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:48:41,983 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:41,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:41,983 INFO L82 PathProgramCache]: Analyzing trace with hash 523098409, now seen corresponding path program 1 times [2018-11-06 19:48:41,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:41,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:41,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:41,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:41,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2018-11-06 19:48:43,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:48:43,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:48:43,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:48:43,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:48:43,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:48:43,635 INFO L87 Difference]: Start difference. First operand 146894 states and 167209 transitions. Second operand 3 states. [2018-11-06 19:48:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:56,247 INFO L93 Difference]: Finished difference Result 399054 states and 452681 transitions. [2018-11-06 19:48:56,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:48:56,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1017 [2018-11-06 19:48:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:56,540 INFO L225 Difference]: With dead ends: 399054 [2018-11-06 19:48:56,540 INFO L226 Difference]: Without dead ends: 253528 [2018-11-06 19:48:56,610 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:48:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253528 states. [2018-11-06 19:48:58,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253528 to 253460. [2018-11-06 19:48:58,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253460 states. [2018-11-06 19:48:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253460 states to 253460 states and 278592 transitions. [2018-11-06 19:48:58,786 INFO L78 Accepts]: Start accepts. Automaton has 253460 states and 278592 transitions. Word has length 1017 [2018-11-06 19:48:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:58,787 INFO L480 AbstractCegarLoop]: Abstraction has 253460 states and 278592 transitions. [2018-11-06 19:48:58,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:48:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 253460 states and 278592 transitions. [2018-11-06 19:48:58,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2018-11-06 19:48:58,802 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:58,803 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:48:58,803 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:58,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:58,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2051765987, now seen corresponding path program 1 times [2018-11-06 19:48:58,804 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:58,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:58,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:58,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:58,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:49:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2018-11-06 19:49:01,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:49:01,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:49:01,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:49:01,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:49:01,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:49:01,486 INFO L87 Difference]: Start difference. First operand 253460 states and 278592 transitions. Second operand 4 states. Received shutdown request... [2018-11-06 19:49:15,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:49:15,319 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:49:15,324 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:49:15,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:49:15 BoogieIcfgContainer [2018-11-06 19:49:15,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:49:15,325 INFO L168 Benchmark]: Toolchain (without parser) took 228740.39 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:49:15,326 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. [2018-11-06 19:49:15,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3640.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 404.3 MB). Peak memory consumption was 404.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:49:15,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 1184.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.7 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:49:15,329 INFO L168 Benchmark]: Boogie Preprocessor took 731.99 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 109.3 MB). Peak memory consumption was 109.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:49:15,330 INFO L168 Benchmark]: RCFGBuilder took 17186.52 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 300.9 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -389.4 MB). Peak memory consumption was 817.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:49:15,330 INFO L168 Benchmark]: TraceAbstraction took 205992.28 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -141.5 MB). Peak memory consumption was 905.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:49:15,336 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 3640.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 404.3 MB). Peak memory consumption was 404.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1184.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.7 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 731.99 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 109.3 MB). Peak memory consumption was 109.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17186.52 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 300.9 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -389.4 MB). Peak memory consumption was 817.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205992.28 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -141.5 MB). Peak memory consumption was 905.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while BasicCegarLoop was constructing difference of abstraction (253460states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (310255 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 205.9s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 181.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18056 SDtfs, 45422 SDslu, 9327 SDs, 0 SdLazy, 84151 SolverSat, 23738 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 146.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253460occurred 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: 8.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 116227 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 6178 NumberOfCodeBlocks, 6178 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 6167 ConstructedInterpolants, 0 QuantifiedInterpolants, 11776780 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 4261/4261 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown