java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:10:05,656 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:10:05,658 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:10:05,672 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:10:05,673 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:10:05,674 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:10:05,675 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:10:05,677 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:10:05,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:10:05,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:10:05,680 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:10:05,680 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:10:05,681 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:10:05,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:10:05,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:10:05,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:10:05,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:10:05,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:10:05,688 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:10:05,690 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:10:05,691 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:10:05,692 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:10:05,695 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:10:05,704 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 22:10:05,737 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:10:05,737 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:10:05,739 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:10:05,739 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:10:05,739 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:10:05,741 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:10:05,741 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:10:05,741 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:10:05,741 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:10:05,741 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:10:05,742 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:10:05,742 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:10:05,742 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:10:05,742 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:10:05,743 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:10:05,743 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:10:05,743 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:10:05,743 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:10:05,743 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:10:05,744 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:10:05,744 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:10:05,744 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:10:05,744 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:10:05,744 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:10:05,744 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:10:05,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:10:05,746 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:10:05,746 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:10:05,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:10:05,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:10:05,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:10:05,820 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:10:05,820 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:10:05,821 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-26 22:10:05,882 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5aa2c9a18/d82135c0ef284ae59e23bff99e6448f6/FLAG28fd4f15e [2018-10-26 22:10:06,782 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:10:06,782 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-26 22:10:06,832 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5aa2c9a18/d82135c0ef284ae59e23bff99e6448f6/FLAG28fd4f15e [2018-10-26 22:10:06,855 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5aa2c9a18/d82135c0ef284ae59e23bff99e6448f6 [2018-10-26 22:10:06,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:10:06,874 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:10:06,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:10:06,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:10:06,881 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:10:06,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:10:06" (1/1) ... [2018-10-26 22:10:06,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a25570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:06, skipping insertion in model container [2018-10-26 22:10:06,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:10:06" (1/1) ... [2018-10-26 22:10:06,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:10:07,134 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:10:09,056 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:10:09,061 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:10:10,066 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:10:10,125 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:10:10,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10 WrapperNode [2018-10-26 22:10:10,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:10:10,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:10:10,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:10:10,128 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:10:10,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... [2018-10-26 22:10:10,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... [2018-10-26 22:10:11,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:10:11,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:10:11,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:10:11,254 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:10:11,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... [2018-10-26 22:10:11,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... [2018-10-26 22:10:11,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... [2018-10-26 22:10:11,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... [2018-10-26 22:10:11,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... [2018-10-26 22:10:11,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... [2018-10-26 22:10:11,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... [2018-10-26 22:10:12,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:10:12,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:10:12,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:10:12,209 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:10:12,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:10:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:10:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:10:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:10:29,333 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:10:29,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:10:29 BoogieIcfgContainer [2018-10-26 22:10:29,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:10:29,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:10:29,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:10:29,339 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:10:29,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:10:06" (1/3) ... [2018-10-26 22:10:29,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c555a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:10:29, skipping insertion in model container [2018-10-26 22:10:29,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:10:10" (2/3) ... [2018-10-26 22:10:29,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c555a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:10:29, skipping insertion in model container [2018-10-26 22:10:29,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:10:29" (3/3) ... [2018-10-26 22:10:29,343 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label25_true-unreach-call.c [2018-10-26 22:10:29,353 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:10:29,365 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:10:29,382 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:10:29,428 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:10:29,428 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:10:29,429 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:10:29,429 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:10:29,429 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:10:29,429 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:10:29,429 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:10:29,429 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:10:29,430 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:10:29,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:10:29,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-26 22:10:29,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:10:29,502 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:10:29,507 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:10:29,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:10:29,514 INFO L82 PathProgramCache]: Analyzing trace with hash 680225122, now seen corresponding path program 1 times [2018-10-26 22:10:29,517 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:10:29,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:10:29,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:29,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:10:29,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:10:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:10:29,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:10:29,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:10:29,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:10:29,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:10:29,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:29,996 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 22:10:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:10:52,316 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-10-26 22:10:52,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:10:52,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-26 22:10:52,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:10:52,375 INFO L225 Difference]: With dead ends: 6326 [2018-10-26 22:10:52,375 INFO L226 Difference]: Without dead ends: 4570 [2018-10-26 22:10:52,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:52,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-26 22:10:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-10-26 22:10:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-26 22:10:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-10-26 22:10:52,702 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 37 [2018-10-26 22:10:52,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:10:52,702 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-10-26 22:10:52,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:10:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-10-26 22:10:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-26 22:10:52,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:10:52,711 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:10:52,711 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:10:52,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:10:52,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1877327220, now seen corresponding path program 1 times [2018-10-26 22:10:52,712 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:10:52,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:10:52,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:52,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:10:52,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:10:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:10:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:10:53,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:10:53,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:10:53,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:10:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:10:53,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:53,041 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-10-26 22:11:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:11:17,988 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-10-26 22:11:17,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:11:17,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-26 22:11:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:11:18,060 INFO L225 Difference]: With dead ends: 17552 [2018-10-26 22:11:18,060 INFO L226 Difference]: Without dead ends: 12990 [2018-10-26 22:11:18,069 INFO L605 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 [2018-10-26 22:11:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-26 22:11:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-10-26 22:11:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-10-26 22:11:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-10-26 22:11:18,278 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 141 [2018-10-26 22:11:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:11:18,278 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-10-26 22:11:18,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:11:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-10-26 22:11:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-26 22:11:18,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:11:18,290 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:11:18,290 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:11:18,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:11:18,291 INFO L82 PathProgramCache]: Analyzing trace with hash -570705154, now seen corresponding path program 1 times [2018-10-26 22:11:18,291 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:11:18,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:11:18,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:18,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:11:18,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:11:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:11:18,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:11:18,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:11:18,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:11:18,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:11:18,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:11:18,707 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-10-26 22:11:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:11:40,594 INFO L93 Difference]: Finished difference Result 33844 states and 54415 transitions. [2018-10-26 22:11:40,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:11:40,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2018-10-26 22:11:40,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:11:40,666 INFO L225 Difference]: With dead ends: 33844 [2018-10-26 22:11:40,666 INFO L226 Difference]: Without dead ends: 25180 [2018-10-26 22:11:40,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:11:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2018-10-26 22:11:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 25142. [2018-10-26 22:11:41,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25142 states. [2018-10-26 22:11:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 35892 transitions. [2018-10-26 22:11:41,116 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 35892 transitions. Word has length 145 [2018-10-26 22:11:41,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:11:41,117 INFO L481 AbstractCegarLoop]: Abstraction has 25142 states and 35892 transitions. [2018-10-26 22:11:41,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:11:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 35892 transitions. [2018-10-26 22:11:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-26 22:11:41,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:11:41,120 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:11:41,121 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:11:41,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:11:41,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2131193034, now seen corresponding path program 1 times [2018-10-26 22:11:41,121 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:11:41,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:11:41,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:41,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:11:41,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:11:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:11:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:11:41,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:11:41,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:11:41,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:11:41,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:11:41,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:11:41,494 INFO L87 Difference]: Start difference. First operand 25142 states and 35892 transitions. Second operand 4 states. [2018-10-26 22:12:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:12:01,422 INFO L93 Difference]: Finished difference Result 98404 states and 140796 transitions. [2018-10-26 22:12:01,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:12:01,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2018-10-26 22:12:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:12:01,548 INFO L225 Difference]: With dead ends: 98404 [2018-10-26 22:12:01,549 INFO L226 Difference]: Without dead ends: 73264 [2018-10-26 22:12:01,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:12:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73264 states. [2018-10-26 22:12:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73264 to 73244. [2018-10-26 22:12:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73244 states. [2018-10-26 22:12:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73244 states to 73244 states and 91793 transitions. [2018-10-26 22:12:02,538 INFO L78 Accepts]: Start accepts. Automaton has 73244 states and 91793 transitions. Word has length 168 [2018-10-26 22:12:02,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:12:02,539 INFO L481 AbstractCegarLoop]: Abstraction has 73244 states and 91793 transitions. [2018-10-26 22:12:02,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:12:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand 73244 states and 91793 transitions. [2018-10-26 22:12:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-10-26 22:12:02,552 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:12:02,553 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:12:02,553 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:12:02,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:12:02,554 INFO L82 PathProgramCache]: Analyzing trace with hash 936486196, now seen corresponding path program 1 times [2018-10-26 22:12:02,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:12:02,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:12:02,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:02,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:12:02,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:12:03,075 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:12:03,590 WARN L179 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-26 22:12:03,863 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-26 22:12:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-10-26 22:12:04,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:12:04,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:12:04,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:12:04,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:12:04,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:12:04,282 INFO L87 Difference]: Start difference. First operand 73244 states and 91793 transitions. Second operand 7 states. [2018-10-26 22:12:04,578 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-26 22:12:39,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:12:39,747 INFO L93 Difference]: Finished difference Result 172454 states and 210825 transitions. [2018-10-26 22:12:39,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:12:39,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 492 [2018-10-26 22:12:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:12:39,853 INFO L225 Difference]: With dead ends: 172454 [2018-10-26 22:12:39,853 INFO L226 Difference]: Without dead ends: 99212 [2018-10-26 22:12:39,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:12:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99212 states. [2018-10-26 22:12:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99212 to 95108. [2018-10-26 22:12:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95108 states. [2018-10-26 22:12:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95108 states to 95108 states and 114314 transitions. [2018-10-26 22:12:41,013 INFO L78 Accepts]: Start accepts. Automaton has 95108 states and 114314 transitions. Word has length 492 [2018-10-26 22:12:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:12:41,014 INFO L481 AbstractCegarLoop]: Abstraction has 95108 states and 114314 transitions. [2018-10-26 22:12:41,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:12:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 95108 states and 114314 transitions. [2018-10-26 22:12:41,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-10-26 22:12:41,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:12:41,027 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:12:41,027 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:12:41,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:12:41,027 INFO L82 PathProgramCache]: Analyzing trace with hash 817388878, now seen corresponding path program 1 times [2018-10-26 22:12:41,027 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:12:41,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:12:41,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:41,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:12:41,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:12:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:12:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-26 22:12:41,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:12:41,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:12:41,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:12:41,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:12:41,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:12:41,669 INFO L87 Difference]: Start difference. First operand 95108 states and 114314 transitions. Second operand 4 states. [2018-10-26 22:13:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:13:00,466 INFO L93 Difference]: Finished difference Result 238036 states and 291029 transitions. [2018-10-26 22:13:00,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:13:00,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 520 [2018-10-26 22:13:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:13:00,630 INFO L225 Difference]: With dead ends: 238036 [2018-10-26 22:13:00,630 INFO L226 Difference]: Without dead ends: 142930 [2018-10-26 22:13:00,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142930 states. [2018-10-26 22:13:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142930 to 142919. [2018-10-26 22:13:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142919 states. [2018-10-26 22:13:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142919 states to 142919 states and 167348 transitions. [2018-10-26 22:13:02,852 INFO L78 Accepts]: Start accepts. Automaton has 142919 states and 167348 transitions. Word has length 520 [2018-10-26 22:13:02,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:13:02,853 INFO L481 AbstractCegarLoop]: Abstraction has 142919 states and 167348 transitions. [2018-10-26 22:13:02,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:13:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 142919 states and 167348 transitions. [2018-10-26 22:13:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2018-10-26 22:13:02,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:13:02,897 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:13:02,897 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:13:02,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:13:02,900 INFO L82 PathProgramCache]: Analyzing trace with hash 338414201, now seen corresponding path program 1 times [2018-10-26 22:13:02,900 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:13:02,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:13:02,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:02,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:02,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-26 22:13:04,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:13:04,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:13:04,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:13:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:13:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:04,099 INFO L87 Difference]: Start difference. First operand 142919 states and 167348 transitions. Second operand 4 states. [2018-10-26 22:13:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:13:22,717 INFO L93 Difference]: Finished difference Result 285839 states and 334703 transitions. [2018-10-26 22:13:22,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:13:22,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 892 [2018-10-26 22:13:22,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:13:22,904 INFO L225 Difference]: With dead ends: 285839 [2018-10-26 22:13:22,904 INFO L226 Difference]: Without dead ends: 142922 [2018-10-26 22:13:22,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142922 states. [2018-10-26 22:13:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142922 to 131983. [2018-10-26 22:13:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131983 states. [2018-10-26 22:13:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131983 states to 131983 states and 147276 transitions. [2018-10-26 22:13:24,167 INFO L78 Accepts]: Start accepts. Automaton has 131983 states and 147276 transitions. Word has length 892 [2018-10-26 22:13:24,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:13:24,169 INFO L481 AbstractCegarLoop]: Abstraction has 131983 states and 147276 transitions. [2018-10-26 22:13:24,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:13:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 131983 states and 147276 transitions. [2018-10-26 22:13:24,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-10-26 22:13:24,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:13:24,184 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:13:24,184 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:13:24,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:13:24,185 INFO L82 PathProgramCache]: Analyzing trace with hash 203195525, now seen corresponding path program 1 times [2018-10-26 22:13:24,185 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:13:24,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:13:24,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:24,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:24,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-26 22:13:26,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:13:26,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:13:26,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:13:26,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:13:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:26,155 INFO L87 Difference]: Start difference. First operand 131983 states and 147276 transitions. Second operand 4 states. [2018-10-26 22:13:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:13:50,855 INFO L93 Difference]: Finished difference Result 451279 states and 505202 transitions. [2018-10-26 22:13:50,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:13:50,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 910 [2018-10-26 22:13:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:13:51,172 INFO L225 Difference]: With dead ends: 451279 [2018-10-26 22:13:51,173 INFO L226 Difference]: Without dead ends: 308366 [2018-10-26 22:13:51,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:13:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308366 states. [2018-10-26 22:13:55,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308366 to 304114. [2018-10-26 22:13:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304114 states. [2018-10-26 22:13:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304114 states to 304114 states and 333815 transitions. [2018-10-26 22:13:55,508 INFO L78 Accepts]: Start accepts. Automaton has 304114 states and 333815 transitions. Word has length 910 [2018-10-26 22:13:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:13:55,510 INFO L481 AbstractCegarLoop]: Abstraction has 304114 states and 333815 transitions. [2018-10-26 22:13:55,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:13:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 304114 states and 333815 transitions. [2018-10-26 22:13:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2018-10-26 22:13:55,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:13:55,540 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:13:55,540 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:13:55,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:13:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1739348221, now seen corresponding path program 1 times [2018-10-26 22:13:55,541 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:13:55,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:13:55,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:55,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:55,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:13:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 512 proven. 4 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-26 22:13:59,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:13:59,486 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:13:59,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:13:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:13:59,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown