java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:20:55,335 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:20:55,337 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:20:55,355 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:20:55,356 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:20:55,357 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:20:55,358 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:20:55,361 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:20:55,363 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:20:55,364 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:20:55,364 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:20:55,365 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:20:55,366 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:20:55,367 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:20:55,368 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:20:55,369 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:20:55,370 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:20:55,372 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:20:55,374 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:20:55,376 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:20:55,377 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:20:55,378 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:20:55,380 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:20:55,388 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:20:55,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:20:55,404 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:20:55,404 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:20:55,405 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:20:55,405 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:20:55,405 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:20:55,406 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:20:55,406 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:20:55,406 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:20:55,406 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:20:55,406 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:20:55,407 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:20:55,407 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:20:55,407 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:20:55,407 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:20:55,407 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:20:55,408 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:20:55,408 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:20:55,408 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:20:55,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:20:55,408 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:20:55,409 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:20:55,409 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:20:55,409 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:20:55,409 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:20:55,409 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:20:55,410 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:20:55,410 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:20:55,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:20:55,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:20:55,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:20:55,472 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:20:55,472 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:20:55,473 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-10-24 16:20:55,548 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f016a9d3/bf23106a09404091920f19f7fa77e4a0/FLAGe153fa8fb [2018-10-24 16:20:56,342 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:20:56,343 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-10-24 16:20:56,374 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f016a9d3/bf23106a09404091920f19f7fa77e4a0/FLAGe153fa8fb [2018-10-24 16:20:56,390 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f016a9d3/bf23106a09404091920f19f7fa77e4a0 [2018-10-24 16:20:56,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:20:56,403 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:20:56,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:20:56,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:20:56,409 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:20:56,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:20:56" (1/1) ... [2018-10-24 16:20:56,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0d0dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:56, skipping insertion in model container [2018-10-24 16:20:56,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:20:56" (1/1) ... [2018-10-24 16:20:56,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:20:56,585 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:20:58,201 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:20:58,206 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:20:58,948 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:20:58,990 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:20:58,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58 WrapperNode [2018-10-24 16:20:58,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:20:58,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:20:58,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:20:58,996 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:20:59,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... [2018-10-24 16:20:59,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... [2018-10-24 16:20:59,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:20:59,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:20:59,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:20:59,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:20:59,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... [2018-10-24 16:20:59,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... [2018-10-24 16:21:00,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... [2018-10-24 16:21:00,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... [2018-10-24 16:21:00,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... [2018-10-24 16:21:00,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... [2018-10-24 16:21:00,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... [2018-10-24 16:21:00,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:21:00,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:21:00,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:21:00,405 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:21:00,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:21:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:21:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:21:00,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:21:15,079 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:21:15,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:21:15 BoogieIcfgContainer [2018-10-24 16:21:15,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:21:15,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:21:15,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:21:15,084 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:21:15,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:20:56" (1/3) ... [2018-10-24 16:21:15,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69313cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:21:15, skipping insertion in model container [2018-10-24 16:21:15,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:20:58" (2/3) ... [2018-10-24 16:21:15,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69313cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:21:15, skipping insertion in model container [2018-10-24 16:21:15,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:21:15" (3/3) ... [2018-10-24 16:21:15,088 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label18_true-unreach-call.c [2018-10-24 16:21:15,098 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:21:15,109 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:21:15,127 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:21:15,174 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:21:15,175 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:21:15,175 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:21:15,175 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:21:15,175 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:21:15,176 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:21:15,176 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:21:15,176 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:21:15,176 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:21:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:21:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-24 16:21:15,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:15,227 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:15,229 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:15,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:15,236 INFO L82 PathProgramCache]: Analyzing trace with hash -344880110, now seen corresponding path program 1 times [2018-10-24 16:21:15,238 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:15,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:15,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:15,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:15,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:15,784 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:21:16,071 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:21:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:21:16,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:16,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:16,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:21:16,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:21:16,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:16,364 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-24 16:21:32,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:32,417 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-24 16:21:32,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:21:32,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2018-10-24 16:21:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:32,577 INFO L225 Difference]: With dead ends: 4624 [2018-10-24 16:21:32,577 INFO L226 Difference]: Without dead ends: 3515 [2018-10-24 16:21:32,587 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:21:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-24 16:21:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-24 16:21:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-24 16:21:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-24 16:21:32,792 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 64 [2018-10-24 16:21:32,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:32,793 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-24 16:21:32,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:21:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-24 16:21:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-24 16:21:32,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:32,811 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, 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] [2018-10-24 16:21:32,811 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:32,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:32,812 INFO L82 PathProgramCache]: Analyzing trace with hash 580556029, now seen corresponding path program 1 times [2018-10-24 16:21:32,812 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:32,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:32,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:32,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:32,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-24 16:21:33,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:21:33,303 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:21:33,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:33,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:21:33,776 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 16:21:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:21:34,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:21:34,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2018-10-24 16:21:34,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:21:34,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:21:34,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:21:34,115 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 7 states. [2018-10-24 16:21:34,767 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 16:22:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:04,434 INFO L93 Difference]: Finished difference Result 18149 states and 30382 transitions. [2018-10-24 16:22:04,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:22:04,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2018-10-24 16:22:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:04,510 INFO L225 Difference]: With dead ends: 18149 [2018-10-24 16:22:04,510 INFO L226 Difference]: Without dead ends: 15425 [2018-10-24 16:22:04,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:22:04,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2018-10-24 16:22:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 15379. [2018-10-24 16:22:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15379 states. [2018-10-24 16:22:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15379 states to 15379 states and 20533 transitions. [2018-10-24 16:22:05,030 INFO L78 Accepts]: Start accepts. Automaton has 15379 states and 20533 transitions. Word has length 190 [2018-10-24 16:22:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:05,032 INFO L481 AbstractCegarLoop]: Abstraction has 15379 states and 20533 transitions. [2018-10-24 16:22:05,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:22:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 15379 states and 20533 transitions. [2018-10-24 16:22:05,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-24 16:22:05,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:05,055 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, 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, 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] [2018-10-24 16:22:05,056 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:05,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:05,056 INFO L82 PathProgramCache]: Analyzing trace with hash -507043185, now seen corresponding path program 1 times [2018-10-24 16:22:05,056 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:05,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:05,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:05,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:05,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-10-24 16:22:05,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:05,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:22:05,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:22:05,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:22:05,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:05,530 INFO L87 Difference]: Start difference. First operand 15379 states and 20533 transitions. Second operand 3 states. [2018-10-24 16:22:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:13,320 INFO L93 Difference]: Finished difference Result 39426 states and 54607 transitions. [2018-10-24 16:22:13,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:22:13,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 378 [2018-10-24 16:22:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:13,414 INFO L225 Difference]: With dead ends: 39426 [2018-10-24 16:22:13,414 INFO L226 Difference]: Without dead ends: 24837 [2018-10-24 16:22:13,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24837 states. [2018-10-24 16:22:13,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24837 to 24835. [2018-10-24 16:22:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24835 states. [2018-10-24 16:22:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24835 states to 24835 states and 31976 transitions. [2018-10-24 16:22:13,897 INFO L78 Accepts]: Start accepts. Automaton has 24835 states and 31976 transitions. Word has length 378 [2018-10-24 16:22:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:13,898 INFO L481 AbstractCegarLoop]: Abstraction has 24835 states and 31976 transitions. [2018-10-24 16:22:13,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:22:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 24835 states and 31976 transitions. [2018-10-24 16:22:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-24 16:22:13,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:13,918 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:22:13,918 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:13,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:13,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2007712104, now seen corresponding path program 1 times [2018-10-24 16:22:13,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:13,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:13,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:13,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:13,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 16:22:14,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:14,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:14,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:22:14,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:22:14,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:14,415 INFO L87 Difference]: Start difference. First operand 24835 states and 31976 transitions. Second operand 3 states. [2018-10-24 16:22:21,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:21,650 INFO L93 Difference]: Finished difference Result 48866 states and 63144 transitions. [2018-10-24 16:22:21,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:22:21,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 412 [2018-10-24 16:22:21,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:21,696 INFO L225 Difference]: With dead ends: 48866 [2018-10-24 16:22:21,696 INFO L226 Difference]: Without dead ends: 24821 [2018-10-24 16:22:21,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:21,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24821 states. [2018-10-24 16:22:22,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24821 to 24820. [2018-10-24 16:22:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24820 states. [2018-10-24 16:22:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24820 states to 24820 states and 29747 transitions. [2018-10-24 16:22:22,066 INFO L78 Accepts]: Start accepts. Automaton has 24820 states and 29747 transitions. Word has length 412 [2018-10-24 16:22:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:22,067 INFO L481 AbstractCegarLoop]: Abstraction has 24820 states and 29747 transitions. [2018-10-24 16:22:22,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:22:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 24820 states and 29747 transitions. [2018-10-24 16:22:22,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-10-24 16:22:22,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:22,084 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:22:22,084 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:22,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash 816461091, now seen corresponding path program 1 times [2018-10-24 16:22:22,085 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:22,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:22,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:22,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:22,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 16:22:22,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:22,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:22,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:22,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:22,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:22,689 INFO L87 Difference]: Start difference. First operand 24820 states and 29747 transitions. Second operand 4 states. [2018-10-24 16:22:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:31,577 INFO L93 Difference]: Finished difference Result 53555 states and 64930 transitions. [2018-10-24 16:22:31,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:31,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 430 [2018-10-24 16:22:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:31,622 INFO L225 Difference]: With dead ends: 53555 [2018-10-24 16:22:31,622 INFO L226 Difference]: Without dead ends: 29525 [2018-10-24 16:22:31,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:31,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29525 states. [2018-10-24 16:22:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29525 to 27948. [2018-10-24 16:22:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27948 states. [2018-10-24 16:22:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27948 states to 27948 states and 32353 transitions. [2018-10-24 16:22:32,002 INFO L78 Accepts]: Start accepts. Automaton has 27948 states and 32353 transitions. Word has length 430 [2018-10-24 16:22:32,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:32,003 INFO L481 AbstractCegarLoop]: Abstraction has 27948 states and 32353 transitions. [2018-10-24 16:22:32,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 27948 states and 32353 transitions. [2018-10-24 16:22:32,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2018-10-24 16:22:32,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:32,035 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:32,035 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:32,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:32,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1118451451, now seen corresponding path program 1 times [2018-10-24 16:22:32,036 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:32,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:32,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:32,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:32,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 16:22:33,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:33,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:33,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:33,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:33,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:33,004 INFO L87 Difference]: Start difference. First operand 27948 states and 32353 transitions. Second operand 4 states. [2018-10-24 16:22:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:43,173 INFO L93 Difference]: Finished difference Result 55111 states and 63923 transitions. [2018-10-24 16:22:43,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:43,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 571 [2018-10-24 16:22:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:43,209 INFO L225 Difference]: With dead ends: 55111 [2018-10-24 16:22:43,209 INFO L226 Difference]: Without dead ends: 27953 [2018-10-24 16:22:43,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27953 states. [2018-10-24 16:22:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27953 to 27938. [2018-10-24 16:22:43,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27938 states. [2018-10-24 16:22:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27938 states to 27938 states and 31098 transitions. [2018-10-24 16:22:43,540 INFO L78 Accepts]: Start accepts. Automaton has 27938 states and 31098 transitions. Word has length 571 [2018-10-24 16:22:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:43,541 INFO L481 AbstractCegarLoop]: Abstraction has 27938 states and 31098 transitions. [2018-10-24 16:22:43,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 27938 states and 31098 transitions. [2018-10-24 16:22:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-10-24 16:22:43,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:43,572 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:22:43,572 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:43,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1203895827, now seen corresponding path program 1 times [2018-10-24 16:22:43,573 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:43,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:43,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:43,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:43,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-10-24 16:22:44,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:44,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:44,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:44,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:44,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:44,275 INFO L87 Difference]: Start difference. First operand 27938 states and 31098 transitions. Second operand 4 states. [2018-10-24 16:22:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:53,820 INFO L93 Difference]: Finished difference Result 69298 states and 78498 transitions. [2018-10-24 16:22:53,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:53,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 582 [2018-10-24 16:22:53,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:53,863 INFO L225 Difference]: With dead ends: 69298 [2018-10-24 16:22:53,864 INFO L226 Difference]: Without dead ends: 42150 [2018-10-24 16:22:53,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42150 states. [2018-10-24 16:22:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42150 to 41335. [2018-10-24 16:22:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41335 states. [2018-10-24 16:22:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41335 states to 41335 states and 45917 transitions. [2018-10-24 16:22:54,264 INFO L78 Accepts]: Start accepts. Automaton has 41335 states and 45917 transitions. Word has length 582 [2018-10-24 16:22:54,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:54,264 INFO L481 AbstractCegarLoop]: Abstraction has 41335 states and 45917 transitions. [2018-10-24 16:22:54,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:54,264 INFO L276 IsEmpty]: Start isEmpty. Operand 41335 states and 45917 transitions. [2018-10-24 16:22:54,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-10-24 16:22:54,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:54,299 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:22:54,299 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:54,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:54,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1979989142, now seen corresponding path program 1 times [2018-10-24 16:22:54,300 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:54,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:54,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:54,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:54,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 381 proven. 4 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-10-24 16:22:54,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:22:54,887 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:22:54,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:55,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:22:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-10-24 16:22:55,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:22:55,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:22:55,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:55,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:55,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:55,621 INFO L87 Difference]: Start difference. First operand 41335 states and 45917 transitions. Second operand 4 states. [2018-10-24 16:23:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:06,114 INFO L93 Difference]: Finished difference Result 134752 states and 148704 transitions. [2018-10-24 16:23:06,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:06,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 612 [2018-10-24 16:23:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:06,214 INFO L225 Difference]: With dead ends: 134752 [2018-10-24 16:23:06,214 INFO L226 Difference]: Without dead ends: 85507 [2018-10-24 16:23:06,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:06,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85507 states. [2018-10-24 16:23:06,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85507 to 61008. [2018-10-24 16:23:06,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61008 states. [2018-10-24 16:23:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61008 states to 61008 states and 65582 transitions. [2018-10-24 16:23:06,776 INFO L78 Accepts]: Start accepts. Automaton has 61008 states and 65582 transitions. Word has length 612 [2018-10-24 16:23:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:06,776 INFO L481 AbstractCegarLoop]: Abstraction has 61008 states and 65582 transitions. [2018-10-24 16:23:06,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 61008 states and 65582 transitions. [2018-10-24 16:23:06,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-10-24 16:23:06,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:06,802 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:23:06,803 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:06,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:06,803 INFO L82 PathProgramCache]: Analyzing trace with hash -273215961, now seen corresponding path program 1 times [2018-10-24 16:23:06,804 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:06,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:06,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:06,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:06,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 247 proven. 316 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:23:08,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:23:08,419 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:23:08,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:08,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:23:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-10-24 16:23:09,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:23:09,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:23:09,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:23:09,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:23:09,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:23:09,483 INFO L87 Difference]: Start difference. First operand 61008 states and 65582 transitions. Second operand 7 states. [2018-10-24 16:23:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:49,789 INFO L93 Difference]: Finished difference Result 276678 states and 295724 transitions. [2018-10-24 16:23:49,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:23:49,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 672 [2018-10-24 16:23:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:50,049 INFO L225 Difference]: With dead ends: 276678 [2018-10-24 16:23:50,049 INFO L226 Difference]: Without dead ends: 204593 [2018-10-24 16:23:50,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2018-10-24 16:23:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204593 states. [2018-10-24 16:23:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204593 to 168224. [2018-10-24 16:23:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168224 states. [2018-10-24 16:23:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168224 states to 168224 states and 177212 transitions. [2018-10-24 16:23:52,163 INFO L78 Accepts]: Start accepts. Automaton has 168224 states and 177212 transitions. Word has length 672 [2018-10-24 16:23:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:52,164 INFO L481 AbstractCegarLoop]: Abstraction has 168224 states and 177212 transitions. [2018-10-24 16:23:52,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:23:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 168224 states and 177212 transitions. [2018-10-24 16:23:52,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1754 [2018-10-24 16:23:52,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:52,282 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:23:52,282 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:52,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:52,283 INFO L82 PathProgramCache]: Analyzing trace with hash 775662050, now seen corresponding path program 1 times [2018-10-24 16:23:52,283 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:52,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:52,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:52,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:52,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2726 backedges. 1983 proven. 0 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2018-10-24 16:23:56,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:56,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:56,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:56,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:56,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:56,003 INFO L87 Difference]: Start difference. First operand 168224 states and 177212 transitions. Second operand 4 states. [2018-10-24 16:24:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:11,755 INFO L93 Difference]: Finished difference Result 336461 states and 354472 transitions. [2018-10-24 16:24:11,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:11,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1753 [2018-10-24 16:24:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:11,901 INFO L225 Difference]: With dead ends: 336461 [2018-10-24 16:24:11,901 INFO L226 Difference]: Without dead ends: 168229 [2018-10-24 16:24:11,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168229 states. [2018-10-24 16:24:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168229 to 165056. [2018-10-24 16:24:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165056 states. [2018-10-24 16:24:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165056 states to 165056 states and 171583 transitions. [2018-10-24 16:24:13,348 INFO L78 Accepts]: Start accepts. Automaton has 165056 states and 171583 transitions. Word has length 1753 [2018-10-24 16:24:13,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:13,350 INFO L481 AbstractCegarLoop]: Abstraction has 165056 states and 171583 transitions. [2018-10-24 16:24:13,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 165056 states and 171583 transitions. [2018-10-24 16:24:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1892 [2018-10-24 16:24:13,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:13,484 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:13,484 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:13,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:13,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1068537104, now seen corresponding path program 1 times [2018-10-24 16:24:13,485 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:13,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:13,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:13,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:13,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:15,817 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:24:15,997 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:24:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 2455 proven. 12 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-10-24 16:24:19,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:24:19,412 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:24:19,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:19,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:24:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 2633 proven. 0 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2018-10-24 16:24:23,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:24:23,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2018-10-24 16:24:23,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:24:23,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:24:23,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:24:23,304 INFO L87 Difference]: Start difference. First operand 165056 states and 171583 transitions. Second operand 8 states. [2018-10-24 16:24:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:38,006 INFO L93 Difference]: Finished difference Result 330913 states and 344047 transitions. [2018-10-24 16:24:38,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:24:38,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1891 [2018-10-24 16:24:38,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:38,188 INFO L225 Difference]: With dead ends: 330913 [2018-10-24 16:24:38,188 INFO L226 Difference]: Without dead ends: 166647 [2018-10-24 16:24:38,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1892 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:24:38,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166647 states. [2018-10-24 16:24:39,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166647 to 164264. [2018-10-24 16:24:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164264 states. [2018-10-24 16:24:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164264 states to 164264 states and 170230 transitions. [2018-10-24 16:24:40,106 INFO L78 Accepts]: Start accepts. Automaton has 164264 states and 170230 transitions. Word has length 1891 [2018-10-24 16:24:40,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:40,107 INFO L481 AbstractCegarLoop]: Abstraction has 164264 states and 170230 transitions. [2018-10-24 16:24:40,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:24:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 164264 states and 170230 transitions. [2018-10-24 16:24:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1892 [2018-10-24 16:24:40,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:40,214 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:40,214 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:40,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:40,215 INFO L82 PathProgramCache]: Analyzing trace with hash 386074866, now seen corresponding path program 1 times [2018-10-24 16:24:40,215 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:40,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:40,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:40,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:40,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 2415 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2018-10-24 16:24:43,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:43,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:43,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:43,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:43,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:43,610 INFO L87 Difference]: Start difference. First operand 164264 states and 170230 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 16:24:46,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:46,354 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:24:46,359 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:24:46,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:24:46 BoogieIcfgContainer [2018-10-24 16:24:46,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:24:46,360 INFO L168 Benchmark]: Toolchain (without parser) took 229957.82 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -727.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:24:46,361 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:24:46,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2586.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:24:46,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 931.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:24:46,363 INFO L168 Benchmark]: Boogie Preprocessor took 481.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 63.9 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:24:46,364 INFO L168 Benchmark]: RCFGBuilder took 14674.74 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 263.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -25.4 MB). Peak memory consumption was 634.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:24:46,365 INFO L168 Benchmark]: TraceAbstraction took 211278.73 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -7.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 16:24:46,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2586.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 931.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 481.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 63.9 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14674.74 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 263.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -25.4 MB). Peak memory consumption was 634.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211278.73 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -7.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (164264states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (3417 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 211.1s OverallTime, 12 OverallIterations, 9 TraceHistogramMax, 175.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9170 SDtfs, 47185 SDslu, 3152 SDs, 0 SdLazy, 71887 SolverSat, 24312 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 145.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3442 GetRequests, 3376 SyntacticMatches, 16 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168224occurred in iteration=9, 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: 8.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 68881 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 14.8s InterpolantComputationTime, 12811 NumberOfCodeBlocks, 12811 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 12795 ConstructedInterpolants, 90 QuantifiedInterpolants, 31187815 SizeOfPredicates, 6 NumberOfNonLiveVariables, 4026 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 18649/19013 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown