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/Problem19_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:10:23,317 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:10:23,319 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:10:23,335 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:10:23,336 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:10:23,338 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:10:23,339 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:10:23,342 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:10:23,344 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:10:23,347 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:10:23,348 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:10:23,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:10:23,351 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:10:23,352 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:10:23,353 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:10:23,354 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:10:23,357 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:10:23,359 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:10:23,370 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:10:23,373 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:10:23,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:10:23,377 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:10:23,381 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:10:23,393 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:10:23,407 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:10:23,408 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:10:23,408 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:10:23,409 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:10:23,409 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:10:23,409 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:10:23,410 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:10:23,410 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:10:23,410 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:10:23,410 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:10:23,410 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:10:23,411 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:10:23,411 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:10:23,411 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:10:23,411 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:10:23,411 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:10:23,412 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:10:23,412 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:10:23,412 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:10:23,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:10:23,412 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:10:23,413 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:10:23,413 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:10:23,413 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:10:23,413 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:10:23,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:10:23,413 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:10:23,414 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:10:23,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:10:23,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:10:23,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:10:23,478 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:10:23,478 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:10:23,479 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label57_true-unreach-call.c [2018-10-24 17:10:23,546 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d907aff3c/7708cf8a3fad41d38d31f7c596d5b426/FLAG64dbac3ef [2018-10-24 17:10:24,437 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:10:24,438 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label57_true-unreach-call.c [2018-10-24 17:10:24,481 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d907aff3c/7708cf8a3fad41d38d31f7c596d5b426/FLAG64dbac3ef [2018-10-24 17:10:24,496 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d907aff3c/7708cf8a3fad41d38d31f7c596d5b426 [2018-10-24 17:10:24,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:10:24,513 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:10:24,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:10:24,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:10:24,519 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:10:24,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:10:24" (1/1) ... [2018-10-24 17:10:24,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:24, skipping insertion in model container [2018-10-24 17:10:24,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:10:24" (1/1) ... [2018-10-24 17:10:24,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:10:24,797 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:10:26,774 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:10:26,778 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:10:27,843 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:10:27,895 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:10:27,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27 WrapperNode [2018-10-24 17:10:27,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:10:27,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:10:27,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:10:27,897 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:10:27,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... [2018-10-24 17:10:28,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... [2018-10-24 17:10:28,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:10:28,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:10:28,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:10:28,980 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:10:28,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... [2018-10-24 17:10:28,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... [2018-10-24 17:10:29,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... [2018-10-24 17:10:29,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... [2018-10-24 17:10:29,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... [2018-10-24 17:10:29,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... [2018-10-24 17:10:29,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... [2018-10-24 17:10:29,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:10:29,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:10:29,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:10:29,639 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:10:29,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:10:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:10:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:10:29,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:10:47,089 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:10:47,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:10:47 BoogieIcfgContainer [2018-10-24 17:10:47,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:10:47,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:10:47,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:10:47,094 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:10:47,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:10:24" (1/3) ... [2018-10-24 17:10:47,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef8c800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:10:47, skipping insertion in model container [2018-10-24 17:10:47,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:10:27" (2/3) ... [2018-10-24 17:10:47,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef8c800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:10:47, skipping insertion in model container [2018-10-24 17:10:47,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:10:47" (3/3) ... [2018-10-24 17:10:47,098 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label57_true-unreach-call.c [2018-10-24 17:10:47,108 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:10:47,120 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:10:47,137 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:10:47,194 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:10:47,195 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:10:47,195 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:10:47,195 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:10:47,195 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:10:47,195 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:10:47,195 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:10:47,195 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:10:47,196 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:10:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:10:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 17:10:47,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:47,265 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:10:47,267 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:47,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:47,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1848943538, now seen corresponding path program 1 times [2018-10-24 17:10:47,276 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:47,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:47,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:47,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:47,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:10:47,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:47,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:10:47,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:47,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:47,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:47,861 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:11:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:13,182 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-10-24 17:11:13,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:13,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-24 17:11:13,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:13,244 INFO L225 Difference]: With dead ends: 6419 [2018-10-24 17:11:13,244 INFO L226 Difference]: Without dead ends: 4663 [2018-10-24 17:11:13,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:11:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-10-24 17:11:13,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-10-24 17:11:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-10-24 17:11:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-10-24 17:11:13,471 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 57 [2018-10-24 17:11:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:13,472 INFO L481 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-10-24 17:11:13,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:11:13,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-10-24 17:11:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 17:11:13,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:13,480 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:11:13,481 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:13,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:13,481 INFO L82 PathProgramCache]: Analyzing trace with hash 412483048, now seen corresponding path program 1 times [2018-10-24 17:11:13,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:13,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:13,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:13,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:13,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:11:13,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:11:13,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:11:13,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:11:13,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:11:13,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:11:13,882 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-10-24 17:11:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:44,554 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-10-24 17:11:44,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:11:44,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-24 17:11:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:44,621 INFO L225 Difference]: With dead ends: 17564 [2018-10-24 17:11:44,621 INFO L226 Difference]: Without dead ends: 12993 [2018-10-24 17:11:44,630 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 [2018-10-24 17:11:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-10-24 17:11:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-10-24 17:11:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-10-24 17:11:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-10-24 17:11:44,846 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 141 [2018-10-24 17:11:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:44,847 INFO L481 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-10-24 17:11:44,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:11:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-10-24 17:11:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 17:11:44,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:44,851 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:11:44,851 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:44,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash -331695523, now seen corresponding path program 1 times [2018-10-24 17:11:44,852 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:44,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:44,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:44,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:44,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:11:45,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:11:45,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:11:45,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:11:45,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:11:45,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:11:45,163 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-10-24 17:12:05,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:05,388 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-10-24 17:12:05,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:12:05,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-10-24 17:12:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:05,468 INFO L225 Difference]: With dead ends: 34022 [2018-10-24 17:12:05,469 INFO L226 Difference]: Without dead ends: 25352 [2018-10-24 17:12:05,481 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 [2018-10-24 17:12:05,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-10-24 17:12:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-10-24 17:12:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-10-24 17:12:05,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-10-24 17:12:05,907 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 181 [2018-10-24 17:12:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:12:05,908 INFO L481 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-10-24 17:12:05,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:12:05,908 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-10-24 17:12:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-24 17:12:05,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:12:05,914 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:12:05,914 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:12:05,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:12:05,915 INFO L82 PathProgramCache]: Analyzing trace with hash 852496620, now seen corresponding path program 1 times [2018-10-24 17:12:05,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:12:05,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:12:05,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:05,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:05,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-10-24 17:12:06,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:12:06,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:12:06,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:12:06,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:12:06,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:06,451 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-10-24 17:12:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:24,899 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-10-24 17:12:24,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:12:24,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2018-10-24 17:12:24,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:25,021 INFO L225 Difference]: With dead ends: 93031 [2018-10-24 17:12:25,022 INFO L226 Difference]: Without dead ends: 67695 [2018-10-24 17:12:25,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-10-24 17:12:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-10-24 17:12:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-10-24 17:12:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-10-24 17:12:25,949 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 365 [2018-10-24 17:12:25,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:12:25,949 INFO L481 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-10-24 17:12:25,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:12:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-10-24 17:12:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-10-24 17:12:25,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:12:25,969 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 17:12:25,969 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:12:25,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:12:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1935862081, now seen corresponding path program 1 times [2018-10-24 17:12:25,970 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:12:25,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:12:25,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:25,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:25,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:26,411 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 17:12:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-10-24 17:12:26,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:12:26,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:12:26,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:12:26,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:12:26,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:26,987 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-10-24 17:12:47,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:47,497 INFO L93 Difference]: Finished difference Result 235259 states and 309486 transitions. [2018-10-24 17:12:47,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:12:47,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2018-10-24 17:12:47,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:47,695 INFO L225 Difference]: With dead ends: 235259 [2018-10-24 17:12:47,695 INFO L226 Difference]: Without dead ends: 170305 [2018-10-24 17:12:47,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-10-24 17:12:49,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168873. [2018-10-24 17:12:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168873 states. [2018-10-24 17:12:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168873 states to 168873 states and 202433 transitions. [2018-10-24 17:12:49,411 INFO L78 Accepts]: Start accepts. Automaton has 168873 states and 202433 transitions. Word has length 466 [2018-10-24 17:12:49,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:12:49,411 INFO L481 AbstractCegarLoop]: Abstraction has 168873 states and 202433 transitions. [2018-10-24 17:12:49,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:12:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 168873 states and 202433 transitions. [2018-10-24 17:12:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2018-10-24 17:12:49,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:12:49,463 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:12:49,463 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:12:49,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:12:49,464 INFO L82 PathProgramCache]: Analyzing trace with hash 121612443, now seen corresponding path program 1 times [2018-10-24 17:12:49,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:12:49,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:12:49,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:49,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:49,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:50,254 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 17:12:50,366 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 17:12:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-10-24 17:12:51,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:12:51,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:12:51,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:12:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:12:51,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:12:51,725 INFO L87 Difference]: Start difference. First operand 168873 states and 202433 transitions. Second operand 7 states. [2018-10-24 17:13:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:13:29,571 INFO L93 Difference]: Finished difference Result 377375 states and 447271 transitions. [2018-10-24 17:13:29,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:13:29,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1019 [2018-10-24 17:13:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:13:29,829 INFO L225 Difference]: With dead ends: 377375 [2018-10-24 17:13:29,830 INFO L226 Difference]: Without dead ends: 209870 [2018-10-24 17:13:29,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:13:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209870 states. [2018-10-24 17:13:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209870 to 205764. [2018-10-24 17:13:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205764 states. [2018-10-24 17:13:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205764 states to 205764 states and 240850 transitions. [2018-10-24 17:13:32,306 INFO L78 Accepts]: Start accepts. Automaton has 205764 states and 240850 transitions. Word has length 1019 [2018-10-24 17:13:32,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:32,307 INFO L481 AbstractCegarLoop]: Abstraction has 205764 states and 240850 transitions. [2018-10-24 17:13:32,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:13:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 205764 states and 240850 transitions. [2018-10-24 17:13:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2018-10-24 17:13:32,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:32,376 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2018-10-24 17:13:32,376 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:32,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1001764960, now seen corresponding path program 1 times [2018-10-24 17:13:32,377 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:32,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:32,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:32,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:32,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 17:13:34,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:13:34,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:13:34,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:13:34,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:13:34,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:13:34,718 INFO L87 Difference]: Start difference. First operand 205764 states and 240850 transitions. Second operand 4 states. [2018-10-24 17:13:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:13:54,210 INFO L93 Difference]: Finished difference Result 475731 states and 560740 transitions. [2018-10-24 17:13:54,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:13:54,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1038 [2018-10-24 17:13:54,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:13:54,540 INFO L225 Difference]: With dead ends: 475731 [2018-10-24 17:13:54,541 INFO L226 Difference]: Without dead ends: 267230 [2018-10-24 17:13:54,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:13:54,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267230 states. [2018-10-24 17:13:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267230 to 267218. [2018-10-24 17:13:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267218 states. [2018-10-24 17:13:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267218 states to 267218 states and 298690 transitions. [2018-10-24 17:13:57,892 INFO L78 Accepts]: Start accepts. Automaton has 267218 states and 298690 transitions. Word has length 1038 [2018-10-24 17:13:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:57,893 INFO L481 AbstractCegarLoop]: Abstraction has 267218 states and 298690 transitions. [2018-10-24 17:13:57,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:13:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 267218 states and 298690 transitions. [2018-10-24 17:13:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2018-10-24 17:13:57,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:57,918 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:13:57,919 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:57,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:57,919 INFO L82 PathProgramCache]: Analyzing trace with hash 18831720, now seen corresponding path program 1 times [2018-10-24 17:13:57,919 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:57,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:57,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:57,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:57,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:14:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 774 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-10-24 17:14:00,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:14:00,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:14:00,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:14:00,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:14:00,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:14:00,631 INFO L87 Difference]: Start difference. First operand 267218 states and 298690 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 17:14:21,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:14:21,269 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:14:21,275 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:14:21,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:14:21 BoogieIcfgContainer [2018-10-24 17:14:21,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:14:21,276 INFO L168 Benchmark]: Toolchain (without parser) took 236765.43 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 214.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 17:14:21,277 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:14:21,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3382.01 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: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:14:21,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 1082.81 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 879.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:14:21,279 INFO L168 Benchmark]: Boogie Preprocessor took 658.71 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.3 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:14:21,280 INFO L168 Benchmark]: RCFGBuilder took 17451.29 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 286.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -371.6 MB). Peak memory consumption was 856.9 MB. Max. memory is 7.1 GB. [2018-10-24 17:14:21,281 INFO L168 Benchmark]: TraceAbstraction took 214184.92 ms. Allocated memory was 2.7 GB in the beginning and 3.1 GB in the end (delta: 394.8 MB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 17:14:21,288 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3382.01 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: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1082.81 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 879.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 658.71 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.3 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17451.29 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 286.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -371.6 MB). Peak memory consumption was 856.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214184.92 ms. Allocated memory was 2.7 GB in the beginning and 3.1 GB in the end (delta: 394.8 MB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.2 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 184]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 184). Cancelled while BasicCegarLoop was constructing difference of abstraction (267218states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (306102 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 214.0s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 194.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10793 SDtfs, 33404 SDslu, 3549 SDs, 0 SdLazy, 82686 SolverSat, 21082 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 162.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=267218occurred in iteration=7, 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: 8.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 12714 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 4367 NumberOfCodeBlocks, 4367 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 4359 ConstructedInterpolants, 0 QuantifiedInterpolants, 7523669 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 3826/3826 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown