java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 06:46:34,287 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 06:46:34,288 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 06:46:34,301 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 06:46:34,301 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 06:46:34,302 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 06:46:34,303 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 06:46:34,308 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 06:46:34,310 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 06:46:34,310 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 06:46:34,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 06:46:34,311 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 06:46:34,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 06:46:34,322 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 06:46:34,323 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 06:46:34,323 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 06:46:34,324 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 06:46:34,325 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 06:46:34,327 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 06:46:34,329 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 06:46:34,330 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 06:46:34,331 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 06:46:34,333 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 06:46:34,343 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 06:46:34,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 06:46:34,361 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 06:46:34,362 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 06:46:34,362 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 06:46:34,362 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 06:46:34,363 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 06:46:34,363 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 06:46:34,363 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 06:46:34,363 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 06:46:34,364 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 06:46:34,364 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 06:46:34,364 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 06:46:34,364 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 06:46:34,364 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 06:46:34,364 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 06:46:34,365 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 06:46:34,365 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 06:46:34,365 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 06:46:34,365 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 06:46:34,365 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 06:46:34,367 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 06:46:34,367 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 06:46:34,367 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 06:46:34,367 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 06:46:34,368 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 06:46:34,368 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 06:46:34,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 06:46:34,368 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 06:46:34,368 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 06:46:34,417 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 06:46:34,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 06:46:34,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 06:46:34,442 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 06:46:34,443 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 06:46:34,444 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c [2018-07-22 06:46:34,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d7dd902e3/71a34ac20c9b45498f733a967e94bd8b/FLAG48f6e9e1e [2018-07-22 06:46:35,209 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 06:46:35,210 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c [2018-07-22 06:46:35,253 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d7dd902e3/71a34ac20c9b45498f733a967e94bd8b/FLAG48f6e9e1e [2018-07-22 06:46:35,276 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d7dd902e3/71a34ac20c9b45498f733a967e94bd8b [2018-07-22 06:46:35,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 06:46:35,295 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 06:46:35,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 06:46:35,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 06:46:35,305 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 06:46:35,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:46:35" (1/1) ... [2018-07-22 06:46:35,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c517e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:35, skipping insertion in model container [2018-07-22 06:46:35,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:46:35" (1/1) ... [2018-07-22 06:46:35,533 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 06:46:36,101 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 06:46:36,121 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 06:46:36,519 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 06:46:36,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36 WrapperNode [2018-07-22 06:46:36,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 06:46:36,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 06:46:36,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 06:46:36,597 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 06:46:36,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... [2018-07-22 06:46:36,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... [2018-07-22 06:46:36,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 06:46:36,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 06:46:36,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 06:46:36,773 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 06:46:36,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... [2018-07-22 06:46:36,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... [2018-07-22 06:46:36,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... [2018-07-22 06:46:36,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... [2018-07-22 06:46:36,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... [2018-07-22 06:46:36,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... [2018-07-22 06:46:36,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... [2018-07-22 06:46:36,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 06:46:36,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 06:46:36,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 06:46:36,931 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 06:46:36,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 06:46:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 06:46:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 06:46:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 06:46:43,426 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 06:46:43,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:46:43 BoogieIcfgContainer [2018-07-22 06:46:43,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 06:46:43,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 06:46:43,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 06:46:43,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 06:46:43,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:46:35" (1/3) ... [2018-07-22 06:46:43,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27323f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:46:43, skipping insertion in model container [2018-07-22 06:46:43,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:46:36" (2/3) ... [2018-07-22 06:46:43,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27323f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:46:43, skipping insertion in model container [2018-07-22 06:46:43,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:46:43" (3/3) ... [2018-07-22 06:46:43,451 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label58_true-unreach-call.c [2018-07-22 06:46:43,465 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 06:46:43,477 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 06:46:43,539 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 06:46:43,539 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 06:46:43,540 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 06:46:43,540 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 06:46:43,540 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 06:46:43,540 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 06:46:43,540 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 06:46:43,540 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 06:46:43,540 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 06:46:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-07-22 06:46:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-22 06:46:43,583 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:46:43,584 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:46:43,584 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:46:43,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1203458046, now seen corresponding path program 1 times [2018-07-22 06:46:43,589 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:46:43,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:46:43,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:43,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:46:43,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:46:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:46:44,560 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:46:44,561 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:46:44,564 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:46:44,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:46:44,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:46:44,582 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-07-22 06:46:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:46:48,062 INFO L93 Difference]: Finished difference Result 1079 states and 1933 transitions. [2018-07-22 06:46:48,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:46:48,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-07-22 06:46:48,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:46:48,102 INFO L225 Difference]: With dead ends: 1079 [2018-07-22 06:46:48,102 INFO L226 Difference]: Without dead ends: 769 [2018-07-22 06:46:48,107 INFO L578 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 [2018-07-22 06:46:48,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2018-07-22 06:46:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 513. [2018-07-22 06:46:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2018-07-22 06:46:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 851 transitions. [2018-07-22 06:46:48,205 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 851 transitions. Word has length 161 [2018-07-22 06:46:48,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:46:48,206 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 851 transitions. [2018-07-22 06:46:48,206 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:46:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 851 transitions. [2018-07-22 06:46:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-22 06:46:48,213 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:46:48,214 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 06:46:48,214 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:46:48,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1809269533, now seen corresponding path program 1 times [2018-07-22 06:46:48,215 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:46:48,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:46:48,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:48,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:46:48,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:46:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:46:48,373 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:46:48,374 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:46:48,376 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:46:48,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:46:48,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:46:48,377 INFO L87 Difference]: Start difference. First operand 513 states and 851 transitions. Second operand 3 states. [2018-07-22 06:46:50,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:46:50,193 INFO L93 Difference]: Finished difference Result 1449 states and 2462 transitions. [2018-07-22 06:46:50,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:46:50,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2018-07-22 06:46:50,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:46:50,199 INFO L225 Difference]: With dead ends: 1449 [2018-07-22 06:46:50,200 INFO L226 Difference]: Without dead ends: 938 [2018-07-22 06:46:50,207 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:46:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2018-07-22 06:46:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 923. [2018-07-22 06:46:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2018-07-22 06:46:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1514 transitions. [2018-07-22 06:46:50,263 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1514 transitions. Word has length 170 [2018-07-22 06:46:50,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:46:50,263 INFO L471 AbstractCegarLoop]: Abstraction has 923 states and 1514 transitions. [2018-07-22 06:46:50,263 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:46:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1514 transitions. [2018-07-22 06:46:50,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-22 06:46:50,271 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:46:50,273 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 06:46:50,273 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:46:50,273 INFO L82 PathProgramCache]: Analyzing trace with hash -161212219, now seen corresponding path program 1 times [2018-07-22 06:46:50,273 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:46:50,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:46:50,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:50,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:46:50,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:46:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:46:50,412 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:46:50,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:46:50,415 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:46:50,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:46:50,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:46:50,416 INFO L87 Difference]: Start difference. First operand 923 states and 1514 transitions. Second operand 3 states. [2018-07-22 06:46:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:46:52,271 INFO L93 Difference]: Finished difference Result 1823 states and 2997 transitions. [2018-07-22 06:46:52,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:46:52,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2018-07-22 06:46:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:46:52,277 INFO L225 Difference]: With dead ends: 1823 [2018-07-22 06:46:52,277 INFO L226 Difference]: Without dead ends: 902 [2018-07-22 06:46:52,279 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:46:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2018-07-22 06:46:52,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 902. [2018-07-22 06:46:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2018-07-22 06:46:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1435 transitions. [2018-07-22 06:46:52,310 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1435 transitions. Word has length 175 [2018-07-22 06:46:52,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:46:52,311 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1435 transitions. [2018-07-22 06:46:52,311 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:46:52,311 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1435 transitions. [2018-07-22 06:46:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-22 06:46:52,315 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:46:52,315 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:46:52,315 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:46:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash -632556310, now seen corresponding path program 1 times [2018-07-22 06:46:52,316 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:46:52,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:46:52,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:52,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:46:52,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:46:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-22 06:46:52,416 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:46:52,416 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:46:52,416 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:46:52,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:46:52,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:46:52,417 INFO L87 Difference]: Start difference. First operand 902 states and 1435 transitions. Second operand 4 states. [2018-07-22 06:46:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:46:54,852 INFO L93 Difference]: Finished difference Result 3436 states and 5554 transitions. [2018-07-22 06:46:54,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:46:54,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-07-22 06:46:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:46:54,864 INFO L225 Difference]: With dead ends: 3436 [2018-07-22 06:46:54,864 INFO L226 Difference]: Without dead ends: 2536 [2018-07-22 06:46:54,866 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:46:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2018-07-22 06:46:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2534. [2018-07-22 06:46:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2534 states. [2018-07-22 06:46:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3507 transitions. [2018-07-22 06:46:54,944 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3507 transitions. Word has length 177 [2018-07-22 06:46:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:46:54,944 INFO L471 AbstractCegarLoop]: Abstraction has 2534 states and 3507 transitions. [2018-07-22 06:46:54,944 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:46:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3507 transitions. [2018-07-22 06:46:54,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-22 06:46:54,950 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:46:54,950 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2018-07-22 06:46:54,950 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:46:54,950 INFO L82 PathProgramCache]: Analyzing trace with hash -181583935, now seen corresponding path program 1 times [2018-07-22 06:46:54,951 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:46:54,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:46:54,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:54,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:46:54,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:46:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-22 06:46:55,231 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:46:55,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:46:55,232 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:46:55,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:46:55,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:46:55,232 INFO L87 Difference]: Start difference. First operand 2534 states and 3507 transitions. Second operand 4 states. [2018-07-22 06:46:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:46:57,848 INFO L93 Difference]: Finished difference Result 9801 states and 13569 transitions. [2018-07-22 06:46:57,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:46:57,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-07-22 06:46:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:46:57,878 INFO L225 Difference]: With dead ends: 9801 [2018-07-22 06:46:57,879 INFO L226 Difference]: Without dead ends: 7269 [2018-07-22 06:46:57,883 INFO L578 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 [2018-07-22 06:46:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2018-07-22 06:46:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 4987. [2018-07-22 06:46:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4987 states. [2018-07-22 06:46:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 6611 transitions. [2018-07-22 06:46:58,030 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 6611 transitions. Word has length 182 [2018-07-22 06:46:58,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:46:58,031 INFO L471 AbstractCegarLoop]: Abstraction has 4987 states and 6611 transitions. [2018-07-22 06:46:58,031 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:46:58,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 6611 transitions. [2018-07-22 06:46:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-22 06:46:58,039 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:46:58,039 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:46:58,040 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:46:58,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1313542557, now seen corresponding path program 1 times [2018-07-22 06:46:58,040 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:46:58,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:46:58,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:58,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:46:58,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:46:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-22 06:46:58,190 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:46:58,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:46:58,191 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:46:58,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:46:58,191 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:46:58,191 INFO L87 Difference]: Start difference. First operand 4987 states and 6611 transitions. Second operand 3 states. [2018-07-22 06:46:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:46:59,564 INFO L93 Difference]: Finished difference Result 14462 states and 19064 transitions. [2018-07-22 06:46:59,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:46:59,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2018-07-22 06:46:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:46:59,590 INFO L225 Difference]: With dead ends: 14462 [2018-07-22 06:46:59,591 INFO L226 Difference]: Without dead ends: 9477 [2018-07-22 06:46:59,598 INFO L578 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 [2018-07-22 06:46:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9477 states. [2018-07-22 06:46:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9477 to 9476. [2018-07-22 06:46:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9476 states. [2018-07-22 06:46:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9476 states to 9476 states and 11764 transitions. [2018-07-22 06:46:59,819 INFO L78 Accepts]: Start accepts. Automaton has 9476 states and 11764 transitions. Word has length 186 [2018-07-22 06:46:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:46:59,820 INFO L471 AbstractCegarLoop]: Abstraction has 9476 states and 11764 transitions. [2018-07-22 06:46:59,820 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:46:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 9476 states and 11764 transitions. [2018-07-22 06:46:59,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-22 06:46:59,833 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:46:59,834 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:46:59,834 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:46:59,834 INFO L82 PathProgramCache]: Analyzing trace with hash 278254863, now seen corresponding path program 1 times [2018-07-22 06:46:59,834 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:46:59,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:46:59,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:59,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:46:59,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:46:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-22 06:47:00,090 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:47:00,090 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:47:00,090 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:47:00,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:47:00,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:47:00,091 INFO L87 Difference]: Start difference. First operand 9476 states and 11764 transitions. Second operand 4 states. [2018-07-22 06:47:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:47:01,420 INFO L93 Difference]: Finished difference Result 18949 states and 23525 transitions. [2018-07-22 06:47:01,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:47:01,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2018-07-22 06:47:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:47:01,449 INFO L225 Difference]: With dead ends: 18949 [2018-07-22 06:47:01,449 INFO L226 Difference]: Without dead ends: 9475 [2018-07-22 06:47:01,465 INFO L578 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 [2018-07-22 06:47:01,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9475 states. [2018-07-22 06:47:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9475 to 9475. [2018-07-22 06:47:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9475 states. [2018-07-22 06:47:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9475 states to 9475 states and 11673 transitions. [2018-07-22 06:47:01,660 INFO L78 Accepts]: Start accepts. Automaton has 9475 states and 11673 transitions. Word has length 197 [2018-07-22 06:47:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:47:01,660 INFO L471 AbstractCegarLoop]: Abstraction has 9475 states and 11673 transitions. [2018-07-22 06:47:01,660 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:47:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand 9475 states and 11673 transitions. [2018-07-22 06:47:01,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-22 06:47:01,677 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:47:01,677 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:47:01,677 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:47:01,678 INFO L82 PathProgramCache]: Analyzing trace with hash 355056212, now seen corresponding path program 1 times [2018-07-22 06:47:01,678 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:47:01,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:47:01,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:01,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:47:01,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-22 06:47:01,869 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:47:01,869 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 06:47:01,869 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:47:01,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:47:01,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:47:01,870 INFO L87 Difference]: Start difference. First operand 9475 states and 11673 transitions. Second operand 4 states. [2018-07-22 06:47:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:47:02,911 INFO L93 Difference]: Finished difference Result 37871 states and 46657 transitions. [2018-07-22 06:47:02,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:47:02,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2018-07-22 06:47:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:47:02,966 INFO L225 Difference]: With dead ends: 37871 [2018-07-22 06:47:02,967 INFO L226 Difference]: Without dead ends: 28398 [2018-07-22 06:47:02,982 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:47:03,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28398 states. [2018-07-22 06:47:03,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28398 to 18934. [2018-07-22 06:47:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18934 states. [2018-07-22 06:47:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18934 states to 18934 states and 23005 transitions. [2018-07-22 06:47:03,425 INFO L78 Accepts]: Start accepts. Automaton has 18934 states and 23005 transitions. Word has length 199 [2018-07-22 06:47:03,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:47:03,426 INFO L471 AbstractCegarLoop]: Abstraction has 18934 states and 23005 transitions. [2018-07-22 06:47:03,426 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:47:03,426 INFO L276 IsEmpty]: Start isEmpty. Operand 18934 states and 23005 transitions. [2018-07-22 06:47:03,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-22 06:47:03,450 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:47:03,451 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:47:03,451 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:47:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1214562110, now seen corresponding path program 1 times [2018-07-22 06:47:03,451 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:47:03,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:47:03,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:03,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:47:03,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-22 06:47:03,654 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:47:03,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:47:03,654 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:47:03,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:47:03,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:47:03,655 INFO L87 Difference]: Start difference. First operand 18934 states and 23005 transitions. Second operand 3 states. [2018-07-22 06:47:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:47:05,005 INFO L93 Difference]: Finished difference Result 47540 states and 57472 transitions. [2018-07-22 06:47:05,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:47:05,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2018-07-22 06:47:05,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:47:05,101 INFO L225 Difference]: With dead ends: 47540 [2018-07-22 06:47:05,101 INFO L226 Difference]: Without dead ends: 28608 [2018-07-22 06:47:05,121 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:47:05,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2018-07-22 06:47:05,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 28606. [2018-07-22 06:47:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28606 states. [2018-07-22 06:47:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28606 states to 28606 states and 34413 transitions. [2018-07-22 06:47:05,554 INFO L78 Accepts]: Start accepts. Automaton has 28606 states and 34413 transitions. Word has length 209 [2018-07-22 06:47:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:47:05,554 INFO L471 AbstractCegarLoop]: Abstraction has 28606 states and 34413 transitions. [2018-07-22 06:47:05,554 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:47:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 28606 states and 34413 transitions. [2018-07-22 06:47:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-22 06:47:05,581 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:47:05,581 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 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] [2018-07-22 06:47:05,582 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:47:05,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1473000598, now seen corresponding path program 2 times [2018-07-22 06:47:05,582 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:47:05,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:47:05,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:05,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:47:05,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-07-22 06:47:05,753 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:47:05,754 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:47:05,754 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:47:05,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:47:05,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:47:05,755 INFO L87 Difference]: Start difference. First operand 28606 states and 34413 transitions. Second operand 3 states. [2018-07-22 06:47:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:47:07,234 INFO L93 Difference]: Finished difference Result 57216 states and 68836 transitions. [2018-07-22 06:47:07,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:47:07,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2018-07-22 06:47:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:47:07,271 INFO L225 Difference]: With dead ends: 57216 [2018-07-22 06:47:07,272 INFO L226 Difference]: Without dead ends: 28612 [2018-07-22 06:47:07,298 INFO L578 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 [2018-07-22 06:47:07,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28612 states. [2018-07-22 06:47:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28612 to 28606. [2018-07-22 06:47:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28606 states. [2018-07-22 06:47:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28606 states to 28606 states and 33805 transitions. [2018-07-22 06:47:07,665 INFO L78 Accepts]: Start accepts. Automaton has 28606 states and 33805 transitions. Word has length 217 [2018-07-22 06:47:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:47:07,666 INFO L471 AbstractCegarLoop]: Abstraction has 28606 states and 33805 transitions. [2018-07-22 06:47:07,666 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:47:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 28606 states and 33805 transitions. [2018-07-22 06:47:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-22 06:47:07,690 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:47:07,691 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:47:07,691 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:47:07,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1409940924, now seen corresponding path program 1 times [2018-07-22 06:47:07,691 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:47:07,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:47:07,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:07,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-22 06:47:07,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:47:07,900 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:47:07,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:47:07,901 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:47:07,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:47:07,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:47:07,902 INFO L87 Difference]: Start difference. First operand 28606 states and 33805 transitions. Second operand 3 states. [2018-07-22 06:47:09,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:47:09,083 INFO L93 Difference]: Finished difference Result 81302 states and 95621 transitions. [2018-07-22 06:47:09,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:47:09,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2018-07-22 06:47:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:47:09,151 INFO L225 Difference]: With dead ends: 81302 [2018-07-22 06:47:09,159 INFO L226 Difference]: Without dead ends: 52698 [2018-07-22 06:47:09,190 INFO L578 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 [2018-07-22 06:47:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52698 states. [2018-07-22 06:47:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52698 to 52678. [2018-07-22 06:47:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52678 states. [2018-07-22 06:47:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52678 states to 52678 states and 60433 transitions. [2018-07-22 06:47:10,110 INFO L78 Accepts]: Start accepts. Automaton has 52678 states and 60433 transitions. Word has length 233 [2018-07-22 06:47:10,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:47:10,110 INFO L471 AbstractCegarLoop]: Abstraction has 52678 states and 60433 transitions. [2018-07-22 06:47:10,111 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:47:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 52678 states and 60433 transitions. [2018-07-22 06:47:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-22 06:47:10,138 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:47:10,138 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:47:10,138 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:47:10,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1224727443, now seen corresponding path program 1 times [2018-07-22 06:47:10,139 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:47:10,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:47:10,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:10,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:47:10,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-07-22 06:47:10,527 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:47:10,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:47:10,528 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:47:10,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:47:10,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:47:10,528 INFO L87 Difference]: Start difference. First operand 52678 states and 60433 transitions. Second operand 4 states. [2018-07-22 06:47:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:47:14,426 INFO L93 Difference]: Finished difference Result 156196 states and 179436 transitions. [2018-07-22 06:47:14,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:47:14,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2018-07-22 06:47:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:47:14,518 INFO L225 Difference]: With dead ends: 156196 [2018-07-22 06:47:14,518 INFO L226 Difference]: Without dead ends: 103520 [2018-07-22 06:47:14,548 INFO L578 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 [2018-07-22 06:47:14,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103520 states. [2018-07-22 06:47:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103520 to 103516. [2018-07-22 06:47:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103516 states. [2018-07-22 06:47:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103516 states to 103516 states and 118811 transitions. [2018-07-22 06:47:15,642 INFO L78 Accepts]: Start accepts. Automaton has 103516 states and 118811 transitions. Word has length 264 [2018-07-22 06:47:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:47:15,642 INFO L471 AbstractCegarLoop]: Abstraction has 103516 states and 118811 transitions. [2018-07-22 06:47:15,642 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:47:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 103516 states and 118811 transitions. [2018-07-22 06:47:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-22 06:47:15,654 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:47:15,654 INFO L358 BasicCegarLoop]: trace histogram [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, 3, 3, 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] [2018-07-22 06:47:15,655 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:47:15,655 INFO L82 PathProgramCache]: Analyzing trace with hash 269890987, now seen corresponding path program 1 times [2018-07-22 06:47:15,655 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:47:15,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:47:15,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:15,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:47:15,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 111 proven. 4 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-22 06:47:15,931 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 06:47:15,931 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 06:47:15,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:47:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:16,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 06:47:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-22 06:47:16,196 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 06:47:16,196 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 06:47:16,196 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 06:47:16,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 06:47:16,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-22 06:47:16,197 INFO L87 Difference]: Start difference. First operand 103516 states and 118811 transitions. Second operand 6 states. [2018-07-22 06:47:21,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:47:21,451 INFO L93 Difference]: Finished difference Result 363794 states and 417119 transitions. [2018-07-22 06:47:21,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-22 06:47:21,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 271 [2018-07-22 06:47:21,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:47:21,744 INFO L225 Difference]: With dead ends: 363794 [2018-07-22 06:47:21,744 INFO L226 Difference]: Without dead ends: 260280 [2018-07-22 06:47:21,797 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-22 06:47:21,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260280 states. [2018-07-22 06:47:29,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260280 to 247575. [2018-07-22 06:47:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247575 states. [2018-07-22 06:47:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247575 states to 247575 states and 271699 transitions. [2018-07-22 06:47:29,616 INFO L78 Accepts]: Start accepts. Automaton has 247575 states and 271699 transitions. Word has length 271 [2018-07-22 06:47:29,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:47:29,616 INFO L471 AbstractCegarLoop]: Abstraction has 247575 states and 271699 transitions. [2018-07-22 06:47:29,616 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 06:47:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand 247575 states and 271699 transitions. [2018-07-22 06:47:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-07-22 06:47:29,710 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:47:29,710 INFO L358 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 06:47:29,710 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:47:29,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1332524935, now seen corresponding path program 1 times [2018-07-22 06:47:29,711 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:47:29,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:47:29,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:29,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:47:29,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:30,400 WARN L169 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-07-22 06:47:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-07-22 06:47:30,612 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:47:30,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:47:30,613 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:47:30,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:47:30,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:47:30,615 INFO L87 Difference]: Start difference. First operand 247575 states and 271699 transitions. Second operand 4 states. [2018-07-22 06:47:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:47:34,332 INFO L93 Difference]: Finished difference Result 543296 states and 595052 transitions. [2018-07-22 06:47:34,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:47:34,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 506 [2018-07-22 06:47:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:47:34,630 INFO L225 Difference]: With dead ends: 543296 [2018-07-22 06:47:34,630 INFO L226 Difference]: Without dead ends: 295723 [2018-07-22 06:47:34,755 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:47:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295723 states. [2018-07-22 06:47:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295723 to 243019. [2018-07-22 06:47:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243019 states. [2018-07-22 06:47:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243019 states to 243019 states and 262391 transitions. [2018-07-22 06:47:43,756 INFO L78 Accepts]: Start accepts. Automaton has 243019 states and 262391 transitions. Word has length 506 [2018-07-22 06:47:43,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:47:43,756 INFO L471 AbstractCegarLoop]: Abstraction has 243019 states and 262391 transitions. [2018-07-22 06:47:43,756 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:47:43,756 INFO L276 IsEmpty]: Start isEmpty. Operand 243019 states and 262391 transitions. [2018-07-22 06:47:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-07-22 06:47:43,820 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:47:43,820 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:47:43,820 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:47:43,820 INFO L82 PathProgramCache]: Analyzing trace with hash 183644965, now seen corresponding path program 2 times [2018-07-22 06:47:43,820 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:47:43,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:47:43,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:43,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:47:43,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:47:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:47:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 374 proven. 4 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-07-22 06:47:44,619 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 06:47:44,688 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 06:47:44,698 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-07-22 06:47:44,975 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-07-22 06:47:44,976 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-07-22 06:47:45,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 06:47:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-07-22 06:47:45,867 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 06:47:45,867 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-07-22 06:47:45,868 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 06:47:45,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 06:47:45,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-22 06:47:45,869 INFO L87 Difference]: Start difference. First operand 243019 states and 262391 transitions. Second operand 6 states. [2018-07-22 06:47:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:47:52,301 INFO L93 Difference]: Finished difference Result 963596 states and 1039118 transitions. [2018-07-22 06:47:52,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-22 06:47:52,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 514 [2018-07-22 06:47:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:47:53,858 INFO L225 Difference]: With dead ends: 963596 [2018-07-22 06:47:53,858 INFO L226 Difference]: Without dead ends: 697824 [2018-07-22 06:47:53,995 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-07-22 06:47:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697824 states. [2018-07-22 06:48:08,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697824 to 673956. [2018-07-22 06:48:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673956 states. [2018-07-22 06:48:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673956 states to 673956 states and 723927 transitions. [2018-07-22 06:48:09,066 INFO L78 Accepts]: Start accepts. Automaton has 673956 states and 723927 transitions. Word has length 514 [2018-07-22 06:48:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:48:09,066 INFO L471 AbstractCegarLoop]: Abstraction has 673956 states and 723927 transitions. [2018-07-22 06:48:09,066 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 06:48:09,067 INFO L276 IsEmpty]: Start isEmpty. Operand 673956 states and 723927 transitions. [2018-07-22 06:48:16,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2018-07-22 06:48:16,535 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:48:16,536 INFO L358 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:48:16,536 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:48:16,536 INFO L82 PathProgramCache]: Analyzing trace with hash -82822993, now seen corresponding path program 1 times [2018-07-22 06:48:16,536 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:48:16,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:48:16,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:48:16,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-07-22 06:48:16,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:48:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:48:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-07-22 06:48:17,468 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:48:17,468 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 06:48:17,469 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:48:17,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:48:17,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:48:17,469 INFO L87 Difference]: Start difference. First operand 673956 states and 723927 transitions. Second operand 4 states. [2018-07-22 06:48:36,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:48:36,414 INFO L93 Difference]: Finished difference Result 2494378 states and 2675763 transitions. [2018-07-22 06:48:36,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:48:36,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 660 [2018-07-22 06:48:36,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:48:38,785 INFO L225 Difference]: With dead ends: 2494378 [2018-07-22 06:48:38,785 INFO L226 Difference]: Without dead ends: 1744197 [2018-07-22 06:48:40,172 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:48:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744197 states.