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_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 06:27:12,466 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 06:27:12,469 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 06:27:12,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 06:27:12,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 06:27:12,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 06:27:12,491 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 06:27:12,496 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 06:27:12,498 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 06:27:12,499 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 06:27:12,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 06:27:12,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 06:27:12,500 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 06:27:12,501 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 06:27:12,501 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 06:27:12,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 06:27:12,504 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 06:27:12,505 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 06:27:12,512 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 06:27:12,514 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 06:27:12,515 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 06:27:12,516 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 06:27:12,519 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 06:27:12,535 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 06:27:12,554 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 06:27:12,554 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 06:27:12,555 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 06:27:12,555 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 06:27:12,556 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 06:27:12,556 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 06:27:12,556 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 06:27:12,557 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 06:27:12,557 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 06:27:12,557 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 06:27:12,557 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 06:27:12,557 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 06:27:12,557 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 06:27:12,558 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 06:27:12,558 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 06:27:12,558 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 06:27:12,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 06:27:12,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 06:27:12,559 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 06:27:12,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 06:27:12,559 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 06:27:12,559 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 06:27:12,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 06:27:12,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 06:27:12,560 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 06:27:12,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 06:27:12,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 06:27:12,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 06:27:12,560 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 06:27:12,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 06:27:12,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 06:27:12,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 06:27:12,638 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 06:27:12,639 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 06:27:12,639 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label29_true-unreach-call.c [2018-07-22 06:27:13,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/5bfaa09c6/e8feef8c032a4a8a8e88bc029d1ea5d3/FLAG9ce2ca058 [2018-07-22 06:27:13,433 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 06:27:13,434 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label29_true-unreach-call.c [2018-07-22 06:27:13,458 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/5bfaa09c6/e8feef8c032a4a8a8e88bc029d1ea5d3/FLAG9ce2ca058 [2018-07-22 06:27:13,474 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/5bfaa09c6/e8feef8c032a4a8a8e88bc029d1ea5d3 [2018-07-22 06:27:13,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 06:27:13,498 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 06:27:13,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 06:27:13,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 06:27:13,505 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 06:27:13,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:27:13" (1/1) ... [2018-07-22 06:27:13,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5a278a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:13, skipping insertion in model container [2018-07-22 06:27:13,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:27:13" (1/1) ... [2018-07-22 06:27:13,785 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 06:27:14,352 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 06:27:14,370 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 06:27:14,745 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 06:27:14,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14 WrapperNode [2018-07-22 06:27:14,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 06:27:14,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 06:27:14,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 06:27:14,844 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 06:27:14,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (1/1) ... [2018-07-22 06:27:14,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (1/1) ... [2018-07-22 06:27:15,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 06:27:15,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 06:27:15,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 06:27:15,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 06:27:15,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (1/1) ... [2018-07-22 06:27:15,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (1/1) ... [2018-07-22 06:27:15,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (1/1) ... [2018-07-22 06:27:15,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (1/1) ... [2018-07-22 06:27:15,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (1/1) ... [2018-07-22 06:27:15,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (1/1) ... [2018-07-22 06:27:15,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (1/1) ... [2018-07-22 06:27:15,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 06:27:15,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 06:27:15,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 06:27:15,564 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 06:27:15,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (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 06:27:15,635 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 06:27:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 06:27:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 06:27:22,798 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 06:27:22,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:27:22 BoogieIcfgContainer [2018-07-22 06:27:22,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 06:27:22,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 06:27:22,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 06:27:22,804 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 06:27:22,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:27:13" (1/3) ... [2018-07-22 06:27:22,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15686d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:27:22, skipping insertion in model container [2018-07-22 06:27:22,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:14" (2/3) ... [2018-07-22 06:27:22,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15686d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:27:22, skipping insertion in model container [2018-07-22 06:27:22,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:27:22" (3/3) ... [2018-07-22 06:27:22,808 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label29_true-unreach-call.c [2018-07-22 06:27:22,816 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 06:27:22,825 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 06:27:22,879 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 06:27:22,880 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 06:27:22,880 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 06:27:22,881 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 06:27:22,881 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 06:27:22,881 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 06:27:22,881 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 06:27:22,881 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 06:27:22,881 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 06:27:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-07-22 06:27:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-07-22 06:27:22,928 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:22,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:27:22,930 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:22,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1558585738, now seen corresponding path program 1 times [2018-07-22 06:27:22,938 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:22,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:22,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:22,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:22,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:23,877 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 06:27:23,880 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:23,880 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:27:23,884 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:27:23,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:27:23,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:27:23,903 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-07-22 06:27:26,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:26,233 INFO L93 Difference]: Finished difference Result 1089 states and 1954 transitions. [2018-07-22 06:27:26,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:27:26,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2018-07-22 06:27:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:26,278 INFO L225 Difference]: With dead ends: 1089 [2018-07-22 06:27:26,279 INFO L226 Difference]: Without dead ends: 779 [2018-07-22 06:27:26,285 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 06:27:26,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2018-07-22 06:27:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 515. [2018-07-22 06:27:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-07-22 06:27:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 887 transitions. [2018-07-22 06:27:26,373 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 887 transitions. Word has length 179 [2018-07-22 06:27:26,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:26,374 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 887 transitions. [2018-07-22 06:27:26,374 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:27:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 887 transitions. [2018-07-22 06:27:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-22 06:27:26,380 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:26,381 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 06:27:26,381 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:26,381 INFO L82 PathProgramCache]: Analyzing trace with hash -86535, now seen corresponding path program 1 times [2018-07-22 06:27:26,382 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:26,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:26,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:26,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:26,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:27:26,504 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:26,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:27:26,506 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:27:26,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:27:26,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:27:26,507 INFO L87 Difference]: Start difference. First operand 515 states and 887 transitions. Second operand 3 states. [2018-07-22 06:27:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:26,869 INFO L93 Difference]: Finished difference Result 1528 states and 2640 transitions. [2018-07-22 06:27:26,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:27:26,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2018-07-22 06:27:26,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:26,875 INFO L225 Difference]: With dead ends: 1528 [2018-07-22 06:27:26,875 INFO L226 Difference]: Without dead ends: 1015 [2018-07-22 06:27:26,881 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 06:27:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2018-07-22 06:27:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1013. [2018-07-22 06:27:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2018-07-22 06:27:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1747 transitions. [2018-07-22 06:27:26,931 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1747 transitions. Word has length 185 [2018-07-22 06:27:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:26,931 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1747 transitions. [2018-07-22 06:27:26,931 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:27:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1747 transitions. [2018-07-22 06:27:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-22 06:27:26,936 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:26,936 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 06:27:26,936 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:26,937 INFO L82 PathProgramCache]: Analyzing trace with hash 534235966, now seen corresponding path program 1 times [2018-07-22 06:27:26,937 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:26,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:26,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:26,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:26,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:27:27,062 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:27,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:27:27,063 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:27:27,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:27:27,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:27:27,064 INFO L87 Difference]: Start difference. First operand 1013 states and 1747 transitions. Second operand 3 states. [2018-07-22 06:27:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:31,798 INFO L93 Difference]: Finished difference Result 2922 states and 5107 transitions. [2018-07-22 06:27:31,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:27:31,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2018-07-22 06:27:31,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:31,839 INFO L225 Difference]: With dead ends: 2922 [2018-07-22 06:27:31,840 INFO L226 Difference]: Without dead ends: 1911 [2018-07-22 06:27:31,843 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 06:27:31,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2018-07-22 06:27:31,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1906. [2018-07-22 06:27:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2018-07-22 06:27:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 3065 transitions. [2018-07-22 06:27:31,909 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 3065 transitions. Word has length 186 [2018-07-22 06:27:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:31,909 INFO L471 AbstractCegarLoop]: Abstraction has 1906 states and 3065 transitions. [2018-07-22 06:27:31,909 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:27:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 3065 transitions. [2018-07-22 06:27:31,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-22 06:27:31,917 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:31,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 06:27:31,917 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:31,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1193220139, now seen corresponding path program 1 times [2018-07-22 06:27:31,918 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:31,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:31,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:31,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:31,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:32,052 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 06:27:32,052 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:32,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:27:32,053 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:27:32,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:27:32,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:27:32,054 INFO L87 Difference]: Start difference. First operand 1906 states and 3065 transitions. Second operand 3 states. [2018-07-22 06:27:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:33,580 INFO L93 Difference]: Finished difference Result 5471 states and 8943 transitions. [2018-07-22 06:27:33,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:27:33,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2018-07-22 06:27:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:33,597 INFO L225 Difference]: With dead ends: 5471 [2018-07-22 06:27:33,597 INFO L226 Difference]: Without dead ends: 3567 [2018-07-22 06:27:33,601 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 06:27:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2018-07-22 06:27:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 3538. [2018-07-22 06:27:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3538 states. [2018-07-22 06:27:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5595 transitions. [2018-07-22 06:27:33,708 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5595 transitions. Word has length 188 [2018-07-22 06:27:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:33,709 INFO L471 AbstractCegarLoop]: Abstraction has 3538 states and 5595 transitions. [2018-07-22 06:27:33,709 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:27:33,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5595 transitions. [2018-07-22 06:27:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-22 06:27:33,718 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:33,718 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 06:27:33,718 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:33,719 INFO L82 PathProgramCache]: Analyzing trace with hash -280439908, now seen corresponding path program 1 times [2018-07-22 06:27:33,719 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:33,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:33,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:33,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:33,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:27:33,930 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:33,931 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:27:33,931 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:27:33,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:27:33,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:27:33,931 INFO L87 Difference]: Start difference. First operand 3538 states and 5595 transitions. Second operand 4 states. [2018-07-22 06:27:38,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:38,784 INFO L93 Difference]: Finished difference Result 13606 states and 21771 transitions. [2018-07-22 06:27:38,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:27:38,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2018-07-22 06:27:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:38,830 INFO L225 Difference]: With dead ends: 13606 [2018-07-22 06:27:38,831 INFO L226 Difference]: Without dead ends: 10070 [2018-07-22 06:27:38,839 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 06:27:38,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10070 states. [2018-07-22 06:27:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10070 to 10067. [2018-07-22 06:27:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10067 states. [2018-07-22 06:27:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10067 states to 10067 states and 13788 transitions. [2018-07-22 06:27:39,136 INFO L78 Accepts]: Start accepts. Automaton has 10067 states and 13788 transitions. Word has length 199 [2018-07-22 06:27:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:39,136 INFO L471 AbstractCegarLoop]: Abstraction has 10067 states and 13788 transitions. [2018-07-22 06:27:39,136 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:27:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 10067 states and 13788 transitions. [2018-07-22 06:27:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-22 06:27:39,157 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:39,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:39,158 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:39,158 INFO L82 PathProgramCache]: Analyzing trace with hash 693271054, now seen corresponding path program 1 times [2018-07-22 06:27:39,158 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:39,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:39,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:39,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:39,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:39,741 WARN L169 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-07-22 06:27:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 06:27:39,801 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:39,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 06:27:39,802 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 06:27:39,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 06:27:39,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 06:27:39,802 INFO L87 Difference]: Start difference. First operand 10067 states and 13788 transitions. Second operand 5 states. [2018-07-22 06:27:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:42,701 INFO L93 Difference]: Finished difference Result 34813 states and 48040 transitions. [2018-07-22 06:27:42,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 06:27:42,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2018-07-22 06:27:42,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:42,782 INFO L225 Difference]: With dead ends: 34813 [2018-07-22 06:27:42,782 INFO L226 Difference]: Without dead ends: 24748 [2018-07-22 06:27:42,798 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 06:27:42,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24748 states. [2018-07-22 06:27:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24748 to 20512. [2018-07-22 06:27:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20512 states. [2018-07-22 06:27:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 27599 transitions. [2018-07-22 06:27:43,125 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 27599 transitions. Word has length 219 [2018-07-22 06:27:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:43,126 INFO L471 AbstractCegarLoop]: Abstraction has 20512 states and 27599 transitions. [2018-07-22 06:27:43,127 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 06:27:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 27599 transitions. [2018-07-22 06:27:43,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-22 06:27:43,162 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:43,162 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 06:27:43,162 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:43,162 INFO L82 PathProgramCache]: Analyzing trace with hash -233162514, now seen corresponding path program 1 times [2018-07-22 06:27:43,163 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:43,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:43,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:43,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:43,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-22 06:27:43,366 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:43,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:27:43,366 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:27:43,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:27:43,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:27:43,367 INFO L87 Difference]: Start difference. First operand 20512 states and 27599 transitions. Second operand 3 states. [2018-07-22 06:27:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:44,308 INFO L93 Difference]: Finished difference Result 40940 states and 55084 transitions. [2018-07-22 06:27:44,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:27:44,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2018-07-22 06:27:44,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:44,349 INFO L225 Difference]: With dead ends: 40940 [2018-07-22 06:27:44,349 INFO L226 Difference]: Without dead ends: 20430 [2018-07-22 06:27:44,373 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 06:27:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2018-07-22 06:27:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 20430. [2018-07-22 06:27:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20430 states. [2018-07-22 06:27:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20430 states to 20430 states and 26833 transitions. [2018-07-22 06:27:44,649 INFO L78 Accepts]: Start accepts. Automaton has 20430 states and 26833 transitions. Word has length 244 [2018-07-22 06:27:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:44,652 INFO L471 AbstractCegarLoop]: Abstraction has 20430 states and 26833 transitions. [2018-07-22 06:27:44,652 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:27:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 20430 states and 26833 transitions. [2018-07-22 06:27:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-22 06:27:44,671 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:44,672 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:44,672 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1395890500, now seen corresponding path program 1 times [2018-07-22 06:27:44,672 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:44,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:44,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:44,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:44,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-22 06:27:45,066 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:45,066 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:27:45,066 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:27:45,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:27:45,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:27:45,067 INFO L87 Difference]: Start difference. First operand 20430 states and 26833 transitions. Second operand 4 states. [2018-07-22 06:27:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:46,493 INFO L93 Difference]: Finished difference Result 40871 states and 53690 transitions. [2018-07-22 06:27:46,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:27:46,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 270 [2018-07-22 06:27:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:46,540 INFO L225 Difference]: With dead ends: 40871 [2018-07-22 06:27:46,540 INFO L226 Difference]: Without dead ends: 20443 [2018-07-22 06:27:46,565 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 06:27:46,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20443 states. [2018-07-22 06:27:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20443 to 20430. [2018-07-22 06:27:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20430 states. [2018-07-22 06:27:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20430 states to 20430 states and 26641 transitions. [2018-07-22 06:27:46,851 INFO L78 Accepts]: Start accepts. Automaton has 20430 states and 26641 transitions. Word has length 270 [2018-07-22 06:27:46,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:46,851 INFO L471 AbstractCegarLoop]: Abstraction has 20430 states and 26641 transitions. [2018-07-22 06:27:46,852 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:27:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 20430 states and 26641 transitions. [2018-07-22 06:27:46,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-22 06:27:46,868 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:46,869 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:46,869 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:46,869 INFO L82 PathProgramCache]: Analyzing trace with hash -882248623, now seen corresponding path program 1 times [2018-07-22 06:27:46,869 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:46,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:46,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:46,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:46,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-22 06:27:47,249 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:47,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:27:47,249 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:27:47,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:27:47,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:27:47,250 INFO L87 Difference]: Start difference. First operand 20430 states and 26641 transitions. Second operand 3 states. [2018-07-22 06:27:48,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:48,079 INFO L93 Difference]: Finished difference Result 40739 states and 53160 transitions. [2018-07-22 06:27:48,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:27:48,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2018-07-22 06:27:48,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:48,104 INFO L225 Difference]: With dead ends: 40739 [2018-07-22 06:27:48,104 INFO L226 Difference]: Without dead ends: 20311 [2018-07-22 06:27:48,123 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 06:27:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20311 states. [2018-07-22 06:27:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20311 to 20306. [2018-07-22 06:27:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20306 states. [2018-07-22 06:27:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20306 states to 20306 states and 24850 transitions. [2018-07-22 06:27:48,390 INFO L78 Accepts]: Start accepts. Automaton has 20306 states and 24850 transitions. Word has length 271 [2018-07-22 06:27:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:48,390 INFO L471 AbstractCegarLoop]: Abstraction has 20306 states and 24850 transitions. [2018-07-22 06:27:48,390 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:27:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 20306 states and 24850 transitions. [2018-07-22 06:27:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-22 06:27:48,407 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:48,407 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:48,407 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:48,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1302232778, now seen corresponding path program 1 times [2018-07-22 06:27:48,408 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:48,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:48,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:48,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:48,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-22 06:27:48,883 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:48,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:27:48,883 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:27:48,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:27:48,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:27:48,884 INFO L87 Difference]: Start difference. First operand 20306 states and 24850 transitions. Second operand 4 states. [2018-07-22 06:27:49,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:49,843 INFO L93 Difference]: Finished difference Result 60498 states and 73952 transitions. [2018-07-22 06:27:49,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:27:49,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 282 [2018-07-22 06:27:49,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:49,885 INFO L225 Difference]: With dead ends: 60498 [2018-07-22 06:27:49,885 INFO L226 Difference]: Without dead ends: 40194 [2018-07-22 06:27:49,900 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 06:27:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40194 states. [2018-07-22 06:27:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40194 to 40192. [2018-07-22 06:27:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40192 states. [2018-07-22 06:27:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40192 states to 40192 states and 49048 transitions. [2018-07-22 06:27:50,467 INFO L78 Accepts]: Start accepts. Automaton has 40192 states and 49048 transitions. Word has length 282 [2018-07-22 06:27:50,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:50,467 INFO L471 AbstractCegarLoop]: Abstraction has 40192 states and 49048 transitions. [2018-07-22 06:27:50,467 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:27:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 40192 states and 49048 transitions. [2018-07-22 06:27:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-07-22 06:27:50,498 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:50,498 INFO L358 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:27:50,498 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:50,499 INFO L82 PathProgramCache]: Analyzing trace with hash 452991151, now seen corresponding path program 1 times [2018-07-22 06:27:50,499 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:50,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:50,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:50,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:50,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-22 06:27:50,787 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:50,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 06:27:50,788 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:27:50,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:27:50,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:27:50,788 INFO L87 Difference]: Start difference. First operand 40192 states and 49048 transitions. Second operand 3 states. [2018-07-22 06:27:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:51,428 INFO L93 Difference]: Finished difference Result 80374 states and 98086 transitions. [2018-07-22 06:27:51,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:27:51,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 342 [2018-07-22 06:27:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:51,467 INFO L225 Difference]: With dead ends: 80374 [2018-07-22 06:27:51,468 INFO L226 Difference]: Without dead ends: 40184 [2018-07-22 06:27:51,494 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 06:27:51,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40184 states. [2018-07-22 06:27:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40184 to 40184. [2018-07-22 06:27:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40184 states. [2018-07-22 06:27:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40184 states to 40184 states and 49032 transitions. [2018-07-22 06:27:52,082 INFO L78 Accepts]: Start accepts. Automaton has 40184 states and 49032 transitions. Word has length 342 [2018-07-22 06:27:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:52,082 INFO L471 AbstractCegarLoop]: Abstraction has 40184 states and 49032 transitions. [2018-07-22 06:27:52,082 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:27:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 40184 states and 49032 transitions. [2018-07-22 06:27:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-07-22 06:27:52,093 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:52,094 INFO L358 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:27:52,094 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:52,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1916250390, now seen corresponding path program 1 times [2018-07-22 06:27:52,094 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:52,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:52,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:52,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:52,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:52,890 WARN L169 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-07-22 06:27:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-07-22 06:27:52,999 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:27:52,999 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 06:27:53,000 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 06:27:53,000 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 06:27:53,000 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 06:27:53,000 INFO L87 Difference]: Start difference. First operand 40184 states and 49032 transitions. Second operand 5 states. [2018-07-22 06:27:55,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:27:55,550 INFO L93 Difference]: Finished difference Result 180581 states and 220272 transitions. [2018-07-22 06:27:55,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 06:27:55,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 348 [2018-07-22 06:27:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:27:55,688 INFO L225 Difference]: With dead ends: 180581 [2018-07-22 06:27:55,688 INFO L226 Difference]: Without dead ends: 140399 [2018-07-22 06:27:55,727 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 06:27:55,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140399 states. [2018-07-22 06:27:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140399 to 100215. [2018-07-22 06:27:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100215 states. [2018-07-22 06:27:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100215 states to 100215 states and 122047 transitions. [2018-07-22 06:27:57,177 INFO L78 Accepts]: Start accepts. Automaton has 100215 states and 122047 transitions. Word has length 348 [2018-07-22 06:27:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:27:57,178 INFO L471 AbstractCegarLoop]: Abstraction has 100215 states and 122047 transitions. [2018-07-22 06:27:57,178 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 06:27:57,178 INFO L276 IsEmpty]: Start isEmpty. Operand 100215 states and 122047 transitions. [2018-07-22 06:27:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-07-22 06:27:57,189 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:27:57,189 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 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] [2018-07-22 06:27:57,189 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:27:57,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1251848632, now seen corresponding path program 1 times [2018-07-22 06:27:57,189 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:27:57,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:27:57,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:57,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:57,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:27:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:57,904 WARN L169 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-07-22 06:27:58,330 WARN L169 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-07-22 06:27:58,818 WARN L169 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-22 06:27:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 196 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-22 06:27:59,080 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 06:27:59,080 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 06:27:59,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:27:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:27:59,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 06:28:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-22 06:28:01,564 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 06:28:01,564 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-07-22 06:28:01,565 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-22 06:28:01,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-22 06:28:01,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-22 06:28:01,566 INFO L87 Difference]: Start difference. First operand 100215 states and 122047 transitions. Second operand 8 states. [2018-07-22 06:28:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:28:12,015 INFO L93 Difference]: Finished difference Result 1007484 states and 1204861 transitions. [2018-07-22 06:28:12,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-22 06:28:12,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 349 [2018-07-22 06:28:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:28:13,313 INFO L225 Difference]: With dead ends: 1007484 [2018-07-22 06:28:13,314 INFO L226 Difference]: Without dead ends: 907271 [2018-07-22 06:28:13,448 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 359 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2018-07-22 06:28:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907271 states. [2018-07-22 06:28:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907271 to 550330. [2018-07-22 06:28:29,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550330 states. [2018-07-22 06:28:39,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550330 states to 550330 states and 638909 transitions. [2018-07-22 06:28:39,884 INFO L78 Accepts]: Start accepts. Automaton has 550330 states and 638909 transitions. Word has length 349 [2018-07-22 06:28:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:28:39,884 INFO L471 AbstractCegarLoop]: Abstraction has 550330 states and 638909 transitions. [2018-07-22 06:28:39,884 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-22 06:28:39,884 INFO L276 IsEmpty]: Start isEmpty. Operand 550330 states and 638909 transitions. [2018-07-22 06:28:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-07-22 06:28:39,928 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:28:39,929 INFO L358 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 06:28:39,929 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:28:39,929 INFO L82 PathProgramCache]: Analyzing trace with hash 939175171, now seen corresponding path program 1 times [2018-07-22 06:28:39,930 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:28:39,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:28:39,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:28:39,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:28:39,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:28:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:28:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-07-22 06:28:40,218 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:28:40,218 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:28:40,218 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 06:28:40,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 06:28:40,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 06:28:40,219 INFO L87 Difference]: Start difference. First operand 550330 states and 638909 transitions. Second operand 3 states. [2018-07-22 06:28:46,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:28:46,240 INFO L93 Difference]: Finished difference Result 1081952 states and 1254202 transitions. [2018-07-22 06:28:46,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 06:28:46,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 351 [2018-07-22 06:28:46,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:28:46,909 INFO L225 Difference]: With dead ends: 1081952 [2018-07-22 06:28:46,909 INFO L226 Difference]: Without dead ends: 531624 [2018-07-22 06:28:55,744 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 06:28:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531624 states. [2018-07-22 06:29:01,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531624 to 515664. [2018-07-22 06:29:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515664 states. [2018-07-22 06:29:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515664 states to 515664 states and 576765 transitions. [2018-07-22 06:29:02,284 INFO L78 Accepts]: Start accepts. Automaton has 515664 states and 576765 transitions. Word has length 351 [2018-07-22 06:29:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:29:02,284 INFO L471 AbstractCegarLoop]: Abstraction has 515664 states and 576765 transitions. [2018-07-22 06:29:02,285 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 06:29:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 515664 states and 576765 transitions. [2018-07-22 06:29:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-07-22 06:29:02,320 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:29:02,321 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:29:02,321 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:29:02,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1332020650, now seen corresponding path program 1 times [2018-07-22 06:29:02,321 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:29:02,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:29:02,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:29:02,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:29:02,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:29:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:29:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-07-22 06:29:03,758 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:29:03,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 06:29:03,759 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:29:03,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:29:03,759 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:29:03,759 INFO L87 Difference]: Start difference. First operand 515664 states and 576765 transitions. Second operand 4 states. [2018-07-22 06:29:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:29:17,327 INFO L93 Difference]: Finished difference Result 1242609 states and 1382693 transitions. [2018-07-22 06:29:17,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:29:17,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 377 [2018-07-22 06:29:17,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:29:18,722 INFO L225 Difference]: With dead ends: 1242609 [2018-07-22 06:29:18,722 INFO L226 Difference]: Without dead ends: 726947 [2018-07-22 06:29:18,871 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 06:29:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726947 states. [2018-07-22 06:29:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726947 to 726826. [2018-07-22 06:29:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726826 states. [2018-07-22 06:29:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726826 states to 726826 states and 796898 transitions. [2018-07-22 06:29:29,373 INFO L78 Accepts]: Start accepts. Automaton has 726826 states and 796898 transitions. Word has length 377 [2018-07-22 06:29:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 06:29:29,373 INFO L471 AbstractCegarLoop]: Abstraction has 726826 states and 796898 transitions. [2018-07-22 06:29:29,373 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 06:29:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 726826 states and 796898 transitions. [2018-07-22 06:29:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-07-22 06:29:29,421 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 06:29:29,421 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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, 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] [2018-07-22 06:29:29,421 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 06:29:29,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2002998044, now seen corresponding path program 1 times [2018-07-22 06:29:29,421 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 06:29:29,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 06:29:29,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:29:29,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 06:29:29,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 06:29:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 06:29:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-22 06:29:38,367 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 06:29:38,368 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 06:29:38,371 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 06:29:38,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 06:29:38,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 06:29:38,372 INFO L87 Difference]: Start difference. First operand 726826 states and 796898 transitions. Second operand 4 states. [2018-07-22 06:29:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 06:29:47,706 INFO L93 Difference]: Finished difference Result 2173885 states and 2377110 transitions. [2018-07-22 06:29:47,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 06:29:47,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2018-07-22 06:29:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 06:30:00,968 INFO L225 Difference]: With dead ends: 2173885 [2018-07-22 06:30:00,968 INFO L226 Difference]: Without dead ends: 1447061 [2018-07-22 06:30:01,268 INFO L578 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 [2018-07-22 06:30:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447061 states. Received shutdown request...