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/Problem18_label01_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:35:08,465 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:35:08,467 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:35:08,479 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:35:08,479 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:35:08,481 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:35:08,482 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:35:08,484 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:35:08,486 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:35:08,487 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:35:08,488 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:35:08,488 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:35:08,489 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:35:08,490 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:35:08,492 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:35:08,492 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:35:08,493 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:35:08,495 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:35:08,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:35:08,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:35:08,501 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:35:08,502 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:35:08,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:35:08,521 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:35:08,539 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:35:08,539 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:35:08,540 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:35:08,541 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:35:08,541 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:35:08,542 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:35:08,542 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:35:08,542 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:35:08,542 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:35:08,542 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:35:08,543 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:35:08,543 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:35:08,544 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:35:08,544 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:35:08,544 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:35:08,544 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:35:08,544 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:35:08,544 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:35:08,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:35:08,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:35:08,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:35:08,545 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:35:08,545 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:35:08,546 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:35:08,547 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:35:08,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:35:08,547 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:35:08,548 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:35:08,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:35:08,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:35:08,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:35:08,625 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:35:08,625 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:35:08,626 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-10-24 14:35:08,690 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a22a6d58d/41081e4815af423ca3597af2c250a370/FLAGe554fcc23 [2018-10-24 14:35:09,371 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:35:09,372 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-10-24 14:35:09,395 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a22a6d58d/41081e4815af423ca3597af2c250a370/FLAGe554fcc23 [2018-10-24 14:35:09,411 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a22a6d58d/41081e4815af423ca3597af2c250a370 [2018-10-24 14:35:09,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:35:09,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:35:09,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:35:09,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:35:09,431 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:35:09,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:35:09" (1/1) ... [2018-10-24 14:35:09,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6354d7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:09, skipping insertion in model container [2018-10-24 14:35:09,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:35:09" (1/1) ... [2018-10-24 14:35:09,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:35:09,574 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:35:10,703 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:35:10,708 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:35:11,172 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:35:11,207 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:35:11,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11 WrapperNode [2018-10-24 14:35:11,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:35:11,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:35:11,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:35:11,209 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:35:11,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... [2018-10-24 14:35:11,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... [2018-10-24 14:35:11,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:35:11,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:35:11,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:35:11,774 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:35:11,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... [2018-10-24 14:35:11,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... [2018-10-24 14:35:11,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... [2018-10-24 14:35:11,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... [2018-10-24 14:35:11,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... [2018-10-24 14:35:11,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... [2018-10-24 14:35:11,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... [2018-10-24 14:35:11,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:35:11,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:35:11,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:35:11,998 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:35:11,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:35:12,073 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:35:12,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:35:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:35:19,443 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:35:19,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:35:19 BoogieIcfgContainer [2018-10-24 14:35:19,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:35:19,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:35:19,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:35:19,450 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:35:19,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:35:09" (1/3) ... [2018-10-24 14:35:19,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382e76ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:35:19, skipping insertion in model container [2018-10-24 14:35:19,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:35:11" (2/3) ... [2018-10-24 14:35:19,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382e76ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:35:19, skipping insertion in model container [2018-10-24 14:35:19,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:35:19" (3/3) ... [2018-10-24 14:35:19,456 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label01_false-unreach-call.c [2018-10-24 14:35:19,466 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:35:19,477 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:35:19,496 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:35:19,541 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:35:19,541 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:35:19,542 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:35:19,542 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:35:19,542 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:35:19,542 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:35:19,542 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:35:19,542 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:35:19,542 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:35:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-24 14:35:19,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 14:35:19,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:19,593 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] [2018-10-24 14:35:19,596 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:19,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:19,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1740446778, now seen corresponding path program 1 times [2018-10-24 14:35:19,605 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:19,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:19,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:19,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:19,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:19,995 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:35:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:35:20,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:35:20,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:35:20,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:35:20,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:35:20,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:20,033 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-24 14:35:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:32,169 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-24 14:35:32,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:35:32,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-24 14:35:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:32,210 INFO L225 Difference]: With dead ends: 2902 [2018-10-24 14:35:32,210 INFO L226 Difference]: Without dead ends: 2137 [2018-10-24 14:35:32,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:32,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-24 14:35:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-24 14:35:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-24 14:35:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3649 transitions. [2018-10-24 14:35:32,397 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3649 transitions. Word has length 27 [2018-10-24 14:35:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:32,397 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3649 transitions. [2018-10-24 14:35:32,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:35:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3649 transitions. [2018-10-24 14:35:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-24 14:35:32,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:32,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:35:32,404 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:32,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:32,406 INFO L82 PathProgramCache]: Analyzing trace with hash -245512399, now seen corresponding path program 1 times [2018-10-24 14:35:32,406 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:32,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:32,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:32,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:32,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:35:32,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:35:32,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:35:32,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:35:32,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:35:32,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:32,653 INFO L87 Difference]: Start difference. First operand 2137 states and 3649 transitions. Second operand 4 states. [2018-10-24 14:35:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:40,479 INFO L93 Difference]: Finished difference Result 6345 states and 10882 transitions. [2018-10-24 14:35:40,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:35:40,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2018-10-24 14:35:40,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:40,504 INFO L225 Difference]: With dead ends: 6345 [2018-10-24 14:35:40,504 INFO L226 Difference]: Without dead ends: 4210 [2018-10-24 14:35:40,511 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 [2018-10-24 14:35:40,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2018-10-24 14:35:40,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 4210. [2018-10-24 14:35:40,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4210 states. [2018-10-24 14:35:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6149 transitions. [2018-10-24 14:35:40,600 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6149 transitions. Word has length 94 [2018-10-24 14:35:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:40,600 INFO L481 AbstractCegarLoop]: Abstraction has 4210 states and 6149 transitions. [2018-10-24 14:35:40,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:35:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6149 transitions. [2018-10-24 14:35:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 14:35:40,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:40,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:35:40,605 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:40,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:40,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2084624824, now seen corresponding path program 1 times [2018-10-24 14:35:40,606 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:40,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:40,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:40,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:40,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:35:40,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:35:40,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:35:40,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:35:40,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:35:40,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:40,782 INFO L87 Difference]: Start difference. First operand 4210 states and 6149 transitions. Second operand 4 states. [2018-10-24 14:35:48,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:48,221 INFO L93 Difference]: Finished difference Result 16727 states and 24484 transitions. [2018-10-24 14:35:48,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:35:48,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-24 14:35:48,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:48,279 INFO L225 Difference]: With dead ends: 16727 [2018-10-24 14:35:48,279 INFO L226 Difference]: Without dead ends: 12519 [2018-10-24 14:35:48,287 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 [2018-10-24 14:35:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2018-10-24 14:35:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 12517. [2018-10-24 14:35:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12517 states. [2018-10-24 14:35:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 16172 transitions. [2018-10-24 14:35:48,528 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 16172 transitions. Word has length 99 [2018-10-24 14:35:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:48,528 INFO L481 AbstractCegarLoop]: Abstraction has 12517 states and 16172 transitions. [2018-10-24 14:35:48,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:35:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 16172 transitions. [2018-10-24 14:35:48,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 14:35:48,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:48,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:35:48,531 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:48,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:48,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2109012433, now seen corresponding path program 1 times [2018-10-24 14:35:48,532 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:48,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:48,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:48,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:48,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:35:48,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:35:48,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:35:48,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:35:48,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:35:48,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:48,845 INFO L87 Difference]: Start difference. First operand 12517 states and 16172 transitions. Second operand 4 states. [2018-10-24 14:35:56,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:56,811 INFO L93 Difference]: Finished difference Result 49908 states and 64530 transitions. [2018-10-24 14:35:56,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:35:56,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2018-10-24 14:35:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:56,924 INFO L225 Difference]: With dead ends: 49908 [2018-10-24 14:35:56,924 INFO L226 Difference]: Without dead ends: 37393 [2018-10-24 14:35:56,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37393 states. [2018-10-24 14:35:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37393 to 37393. [2018-10-24 14:35:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37393 states. [2018-10-24 14:35:57,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37393 states to 37393 states and 45766 transitions. [2018-10-24 14:35:57,446 INFO L78 Accepts]: Start accepts. Automaton has 37393 states and 45766 transitions. Word has length 121 [2018-10-24 14:35:57,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:57,447 INFO L481 AbstractCegarLoop]: Abstraction has 37393 states and 45766 transitions. [2018-10-24 14:35:57,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:35:57,447 INFO L276 IsEmpty]: Start isEmpty. Operand 37393 states and 45766 transitions. [2018-10-24 14:35:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 14:35:57,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:57,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:35:57,457 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:57,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:57,457 INFO L82 PathProgramCache]: Analyzing trace with hash -803611789, now seen corresponding path program 1 times [2018-10-24 14:35:57,457 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:57,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:57,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:57,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:57,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:35:58,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:35:58,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:35:58,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:35:58,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:35:58,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:35:58,215 INFO L87 Difference]: Start difference. First operand 37393 states and 45766 transitions. Second operand 5 states. [2018-10-24 14:35:58,474 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-10-24 14:36:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:36:07,191 INFO L93 Difference]: Finished difference Result 87222 states and 105468 transitions. [2018-10-24 14:36:07,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:36:07,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-24 14:36:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:36:07,283 INFO L225 Difference]: With dead ends: 87222 [2018-10-24 14:36:07,283 INFO L226 Difference]: Without dead ends: 48448 [2018-10-24 14:36:07,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:36:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48448 states. [2018-10-24 14:36:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48448 to 46375. [2018-10-24 14:36:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46375 states. [2018-10-24 14:36:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46375 states to 46375 states and 55349 transitions. [2018-10-24 14:36:08,145 INFO L78 Accepts]: Start accepts. Automaton has 46375 states and 55349 transitions. Word has length 146 [2018-10-24 14:36:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:08,145 INFO L481 AbstractCegarLoop]: Abstraction has 46375 states and 55349 transitions. [2018-10-24 14:36:08,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:36:08,146 INFO L276 IsEmpty]: Start isEmpty. Operand 46375 states and 55349 transitions. [2018-10-24 14:36:08,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-24 14:36:08,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:08,154 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:36:08,154 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:08,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:08,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1849595770, now seen corresponding path program 1 times [2018-10-24 14:36:08,155 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:08,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:08,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:08,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:08,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:08,742 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:36:09,175 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-24 14:36:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:36:09,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:36:09,462 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:36:09,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:09,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:36:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-24 14:36:09,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:36:09,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:36:09,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:36:09,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:36:09,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:36:09,798 INFO L87 Difference]: Start difference. First operand 46375 states and 55349 transitions. Second operand 6 states. [2018-10-24 14:36:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:36:24,763 INFO L93 Difference]: Finished difference Result 101743 states and 120015 transitions. [2018-10-24 14:36:24,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:36:24,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 329 [2018-10-24 14:36:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:36:24,856 INFO L225 Difference]: With dead ends: 101743 [2018-10-24 14:36:24,856 INFO L226 Difference]: Without dead ends: 51911 [2018-10-24 14:36:24,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:36:24,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51911 states. [2018-10-24 14:36:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51911 to 42211. [2018-10-24 14:36:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42211 states. [2018-10-24 14:36:25,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42211 states to 42211 states and 45784 transitions. [2018-10-24 14:36:25,571 INFO L78 Accepts]: Start accepts. Automaton has 42211 states and 45784 transitions. Word has length 329 [2018-10-24 14:36:25,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:25,571 INFO L481 AbstractCegarLoop]: Abstraction has 42211 states and 45784 transitions. [2018-10-24 14:36:25,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:36:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 42211 states and 45784 transitions. [2018-10-24 14:36:25,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-10-24 14:36:25,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:25,594 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:36:25,595 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:25,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:25,595 INFO L82 PathProgramCache]: Analyzing trace with hash -731024826, now seen corresponding path program 1 times [2018-10-24 14:36:25,595 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:25,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:25,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:25,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:25,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 14:36:26,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:36:26,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:36:26,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:36:26,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:36:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:36:26,498 INFO L87 Difference]: Start difference. First operand 42211 states and 45784 transitions. Second operand 4 states. [2018-10-24 14:36:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:36:31,460 INFO L93 Difference]: Finished difference Result 104467 states and 114925 transitions. [2018-10-24 14:36:31,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:36:31,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 631 [2018-10-24 14:36:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:36:31,548 INFO L225 Difference]: With dead ends: 104467 [2018-10-24 14:36:31,549 INFO L226 Difference]: Without dead ends: 62258 [2018-10-24 14:36:31,580 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 [2018-10-24 14:36:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62258 states. [2018-10-24 14:36:32,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62258 to 53267. [2018-10-24 14:36:32,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53267 states. [2018-10-24 14:36:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53267 states to 53267 states and 57696 transitions. [2018-10-24 14:36:32,206 INFO L78 Accepts]: Start accepts. Automaton has 53267 states and 57696 transitions. Word has length 631 [2018-10-24 14:36:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:32,207 INFO L481 AbstractCegarLoop]: Abstraction has 53267 states and 57696 transitions. [2018-10-24 14:36:32,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:36:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 53267 states and 57696 transitions. [2018-10-24 14:36:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-10-24 14:36:32,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:32,233 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:36:32,234 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:32,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:32,234 INFO L82 PathProgramCache]: Analyzing trace with hash -56922008, now seen corresponding path program 1 times [2018-10-24 14:36:32,234 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:32,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:32,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:32,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:32,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-24 14:36:33,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:36:33,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:36:33,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:36:33,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:36:33,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:36:33,136 INFO L87 Difference]: Start difference. First operand 53267 states and 57696 transitions. Second operand 4 states. [2018-10-24 14:36:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:36:38,917 INFO L93 Difference]: Finished difference Result 125189 states and 135800 transitions. [2018-10-24 14:36:38,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:36:38,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 664 [2018-10-24 14:36:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:36:39,006 INFO L225 Difference]: With dead ends: 125189 [2018-10-24 14:36:39,007 INFO L226 Difference]: Without dead ends: 71924 [2018-10-24 14:36:39,046 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 [2018-10-24 14:36:39,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71924 states. [2018-10-24 14:36:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71924 to 71233. [2018-10-24 14:36:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71233 states. [2018-10-24 14:36:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71233 states to 71233 states and 75926 transitions. [2018-10-24 14:36:40,437 INFO L78 Accepts]: Start accepts. Automaton has 71233 states and 75926 transitions. Word has length 664 [2018-10-24 14:36:40,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:40,438 INFO L481 AbstractCegarLoop]: Abstraction has 71233 states and 75926 transitions. [2018-10-24 14:36:40,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:36:40,438 INFO L276 IsEmpty]: Start isEmpty. Operand 71233 states and 75926 transitions. [2018-10-24 14:36:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2018-10-24 14:36:40,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:40,493 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2018-10-24 14:36:40,494 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:40,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:40,495 INFO L82 PathProgramCache]: Analyzing trace with hash -100247489, now seen corresponding path program 1 times [2018-10-24 14:36:40,495 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:40,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:40,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:40,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:40,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2018-10-24 14:36:41,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:36:41,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:36:41,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:36:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:36:41,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:36:41,575 INFO L87 Difference]: Start difference. First operand 71233 states and 75926 transitions. Second operand 4 states. [2018-10-24 14:36:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:36:46,585 INFO L93 Difference]: Finished difference Result 145228 states and 154723 transitions. [2018-10-24 14:36:46,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:36:46,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 837 [2018-10-24 14:36:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:36:46,657 INFO L225 Difference]: With dead ends: 145228 [2018-10-24 14:36:46,657 INFO L226 Difference]: Without dead ends: 65690 [2018-10-24 14:36:46,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:36:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65690 states. [2018-10-24 14:36:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65690 to 64308. [2018-10-24 14:36:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64308 states. [2018-10-24 14:36:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64308 states to 64308 states and 66452 transitions. [2018-10-24 14:36:47,862 INFO L78 Accepts]: Start accepts. Automaton has 64308 states and 66452 transitions. Word has length 837 [2018-10-24 14:36:47,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:47,864 INFO L481 AbstractCegarLoop]: Abstraction has 64308 states and 66452 transitions. [2018-10-24 14:36:47,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:36:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 64308 states and 66452 transitions. [2018-10-24 14:36:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2018-10-24 14:36:47,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:47,889 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:36:47,890 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:47,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:47,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1243717665, now seen corresponding path program 1 times [2018-10-24 14:36:47,890 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:47,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:47,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:47,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:47,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:48,682 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-24 14:36:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 1113 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2018-10-24 14:36:48,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:36:48,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:36:48,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:36:48,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:36:48,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:36:48,910 INFO L87 Difference]: Start difference. First operand 64308 states and 66452 transitions. Second operand 4 states. [2018-10-24 14:36:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:36:53,605 INFO L93 Difference]: Finished difference Result 143123 states and 148115 transitions. [2018-10-24 14:36:53,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:36:53,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 870 [2018-10-24 14:36:53,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:36:53,691 INFO L225 Difference]: With dead ends: 143123 [2018-10-24 14:36:53,692 INFO L226 Difference]: Without dead ends: 78817 [2018-10-24 14:36:53,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:36:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78817 states. [2018-10-24 14:36:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78817 to 74671. [2018-10-24 14:36:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74671 states. [2018-10-24 14:36:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74671 states to 74671 states and 76872 transitions. [2018-10-24 14:36:54,891 INFO L78 Accepts]: Start accepts. Automaton has 74671 states and 76872 transitions. Word has length 870 [2018-10-24 14:36:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:54,892 INFO L481 AbstractCegarLoop]: Abstraction has 74671 states and 76872 transitions. [2018-10-24 14:36:54,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:36:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 74671 states and 76872 transitions. [2018-10-24 14:36:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2018-10-24 14:36:54,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:54,914 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:36:54,914 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:54,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:54,915 INFO L82 PathProgramCache]: Analyzing trace with hash 71348960, now seen corresponding path program 1 times [2018-10-24 14:36:54,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:54,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:54,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:54,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:54,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:55,572 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:36:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 1033 proven. 452 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-24 14:36:57,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:36:57,404 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:36:57,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:57,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:36:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 620 proven. 0 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2018-10-24 14:36:58,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:36:58,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 11 [2018-10-24 14:36:58,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 14:36:58,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 14:36:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:36:58,121 INFO L87 Difference]: Start difference. First operand 74671 states and 76872 transitions. Second operand 11 states. [2018-10-24 14:37:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:37:21,282 INFO L93 Difference]: Finished difference Result 196930 states and 203256 transitions. [2018-10-24 14:37:21,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-24 14:37:21,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 928 [2018-10-24 14:37:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:37:21,396 INFO L225 Difference]: With dead ends: 196930 [2018-10-24 14:37:21,396 INFO L226 Difference]: Without dead ends: 122952 [2018-10-24 14:37:21,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 947 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2018-10-24 14:37:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122952 states. [2018-10-24 14:37:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122952 to 87109. [2018-10-24 14:37:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87109 states. [2018-10-24 14:37:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87109 states to 87109 states and 89465 transitions. [2018-10-24 14:37:22,196 INFO L78 Accepts]: Start accepts. Automaton has 87109 states and 89465 transitions. Word has length 928 [2018-10-24 14:37:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:37:22,196 INFO L481 AbstractCegarLoop]: Abstraction has 87109 states and 89465 transitions. [2018-10-24 14:37:22,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 14:37:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 87109 states and 89465 transitions. [2018-10-24 14:37:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1491 [2018-10-24 14:37:22,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:37:22,221 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:37:22,221 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:37:22,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:37:22,222 INFO L82 PathProgramCache]: Analyzing trace with hash -904586158, now seen corresponding path program 1 times [2018-10-24 14:37:22,222 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:37:22,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:37:22,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:22,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:22,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:23,693 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-24 14:37:24,084 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-24 14:37:24,415 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-24 14:37:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 1850 proven. 499 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-10-24 14:37:28,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:37:28,805 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:37:28,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:29,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:37:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 1255 proven. 0 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-10-24 14:37:30,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:37:30,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2018-10-24 14:37:30,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 14:37:30,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 14:37:30,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-10-24 14:37:30,505 INFO L87 Difference]: Start difference. First operand 87109 states and 89465 transitions. Second operand 13 states. [2018-10-24 14:37:49,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:37:49,181 INFO L93 Difference]: Finished difference Result 179483 states and 184261 transitions. [2018-10-24 14:37:49,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 14:37:49,182 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1490 [2018-10-24 14:37:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:37:49,270 INFO L225 Difference]: With dead ends: 179483 [2018-10-24 14:37:49,270 INFO L226 Difference]: Without dead ends: 86830 [2018-10-24 14:37:49,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1514 GetRequests, 1490 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2018-10-24 14:37:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86830 states. [2018-10-24 14:37:50,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86830 to 82256. [2018-10-24 14:37:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82256 states. [2018-10-24 14:37:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82256 states to 82256 states and 84213 transitions. [2018-10-24 14:37:50,228 INFO L78 Accepts]: Start accepts. Automaton has 82256 states and 84213 transitions. Word has length 1490 [2018-10-24 14:37:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:37:50,229 INFO L481 AbstractCegarLoop]: Abstraction has 82256 states and 84213 transitions. [2018-10-24 14:37:50,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 14:37:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 82256 states and 84213 transitions. [2018-10-24 14:37:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1579 [2018-10-24 14:37:50,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:37:50,258 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:37:50,259 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:37:50,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:37:50,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1883304120, now seen corresponding path program 1 times [2018-10-24 14:37:50,260 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:37:50,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:37:50,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:50,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:50,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:51,201 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 14:37:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3629 backedges. 2156 proven. 0 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2018-10-24 14:37:52,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:37:52,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 14:37:52,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:37:52,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:37:52,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:37:52,784 INFO L87 Difference]: Start difference. First operand 82256 states and 84213 transitions. Second operand 7 states. [2018-10-24 14:38:01,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:38:01,068 INFO L93 Difference]: Finished difference Result 167396 states and 171458 transitions. [2018-10-24 14:38:01,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:38:01,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1578 [2018-10-24 14:38:01,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:38:01,155 INFO L225 Difference]: With dead ends: 167396 [2018-10-24 14:38:01,155 INFO L226 Difference]: Without dead ends: 84341 [2018-10-24 14:38:01,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:38:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84341 states. [2018-10-24 14:38:01,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84341 to 84325. [2018-10-24 14:38:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84325 states. [2018-10-24 14:38:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84325 states to 84325 states and 86184 transitions. [2018-10-24 14:38:01,799 INFO L78 Accepts]: Start accepts. Automaton has 84325 states and 86184 transitions. Word has length 1578 [2018-10-24 14:38:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:38:01,800 INFO L481 AbstractCegarLoop]: Abstraction has 84325 states and 86184 transitions. [2018-10-24 14:38:01,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:38:01,800 INFO L276 IsEmpty]: Start isEmpty. Operand 84325 states and 86184 transitions. [2018-10-24 14:38:01,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1613 [2018-10-24 14:38:01,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:38:01,826 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-24 14:38:01,826 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:38:01,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:38:01,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1452348509, now seen corresponding path program 1 times [2018-10-24 14:38:01,827 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:38:01,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:38:01,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:01,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:01,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:03,622 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-24 14:38:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1121 proven. 1792 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-10-24 14:38:08,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:38:08,193 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:38:08,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:08,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:38:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1409 proven. 0 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2018-10-24 14:38:09,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:38:09,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 18 [2018-10-24 14:38:09,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 14:38:09,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 14:38:09,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-10-24 14:38:09,849 INFO L87 Difference]: Start difference. First operand 84325 states and 86184 transitions. Second operand 18 states. [2018-10-24 14:38:52,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:38:52,618 INFO L93 Difference]: Finished difference Result 193207 states and 197524 transitions. [2018-10-24 14:38:52,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-24 14:38:52,621 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1612 [2018-10-24 14:38:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:38:52,723 INFO L225 Difference]: With dead ends: 193207 [2018-10-24 14:38:52,723 INFO L226 Difference]: Without dead ends: 104642 [2018-10-24 14:38:52,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1671 GetRequests, 1630 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2018-10-24 14:38:52,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104642 states. [2018-10-24 14:38:53,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104642 to 93302. [2018-10-24 14:38:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93302 states. [2018-10-24 14:38:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93302 states to 93302 states and 95212 transitions. [2018-10-24 14:38:53,570 INFO L78 Accepts]: Start accepts. Automaton has 93302 states and 95212 transitions. Word has length 1612 [2018-10-24 14:38:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:38:53,571 INFO L481 AbstractCegarLoop]: Abstraction has 93302 states and 95212 transitions. [2018-10-24 14:38:53,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 14:38:53,571 INFO L276 IsEmpty]: Start isEmpty. Operand 93302 states and 95212 transitions. [2018-10-24 14:38:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2018-10-24 14:38:53,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:38:53,608 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:38:53,608 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:38:53,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:38:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash 976284470, now seen corresponding path program 1 times [2018-10-24 14:38:53,609 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:38:53,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:38:53,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:53,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:53,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:38:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 14:38:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 1893 proven. 1672 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2018-10-24 14:38:59,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:38:59,301 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:38:59,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:38:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:38:59,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:38:59,716 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 14:38:59,918 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:38:59,918 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:38:59,924 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:38:59,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:38:59 BoogieIcfgContainer [2018-10-24 14:38:59,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:38:59,927 INFO L168 Benchmark]: Toolchain (without parser) took 230502.10 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 9.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 14:38:59,928 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:38:59,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1782.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:59,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 564.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:59,934 INFO L168 Benchmark]: Boogie Preprocessor took 223.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:59,934 INFO L168 Benchmark]: RCFGBuilder took 7446.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 543.6 MB). Peak memory consumption was 543.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:59,940 INFO L168 Benchmark]: TraceAbstraction took 220479.70 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.4 GB in the end (delta: 252.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 14:38:59,950 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1782.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 564.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 223.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7446.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 543.6 MB). Peak memory consumption was 543.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220479.70 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.4 GB in the end (delta: 252.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was analyzing trace of length 1676 with TraceHistMax 9,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 220.3s OverallTime, 15 OverallIterations, 9 TraceHistogramMax, 174.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8096 SDtfs, 53837 SDslu, 3394 SDs, 0 SdLazy, 144358 SolverSat, 10776 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 136.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4548 GetRequests, 4414 SyntacticMatches, 12 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93302occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 78758 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 13785 NumberOfCodeBlocks, 13785 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 13767 ConstructedInterpolants, 0 QuantifiedInterpolants, 65061418 SizeOfPredicates, 1 NumberOfNonLiveVariables, 5092 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 21058/23805 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown