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/Problem14_label53_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:27:36,561 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:27:36,563 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:27:36,574 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:27:36,575 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:27:36,576 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:27:36,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:27:36,579 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:27:36,580 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:27:36,581 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:27:36,582 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:27:36,582 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:27:36,583 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:27:36,584 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:27:36,585 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:27:36,586 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:27:36,587 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:27:36,588 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:27:36,590 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:27:36,592 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:27:36,593 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:27:36,597 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:27:36,599 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:27:36,609 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 [2018-10-23 20:27:36,623 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:27:36,623 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:27:36,624 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:27:36,624 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:27:36,625 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:27:36,625 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:27:36,625 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:27:36,625 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:27:36,626 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:27:36,626 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:27:36,626 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:27:36,626 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:27:36,626 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:27:36,627 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:27:36,627 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:27:36,627 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:27:36,627 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:27:36,627 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:27:36,628 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:27:36,628 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:27:36,628 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:27:36,628 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:27:36,628 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:27:36,629 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:27:36,629 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:27:36,629 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:27:36,629 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:27:36,629 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:27:36,672 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:27:36,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:27:36,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:27:36,689 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:27:36,689 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:27:36,690 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-10-23 20:27:36,746 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3a9d4027d/bba286d6c1e54cd6b960da8ea71b6d88/FLAG5f1e8bd17 [2018-10-23 20:27:37,329 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:27:37,330 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-10-23 20:27:37,353 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3a9d4027d/bba286d6c1e54cd6b960da8ea71b6d88/FLAG5f1e8bd17 [2018-10-23 20:27:37,381 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3a9d4027d/bba286d6c1e54cd6b960da8ea71b6d88 [2018-10-23 20:27:37,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:27:37,395 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:27:37,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:27:37,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:27:37,402 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:27:37,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:27:37" (1/1) ... [2018-10-23 20:27:37,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73cc07b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:37, skipping insertion in model container [2018-10-23 20:27:37,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:27:37" (1/1) ... [2018-10-23 20:27:37,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:27:37,490 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:27:38,006 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:27:38,011 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:27:38,168 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:27:38,187 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:27:38,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38 WrapperNode [2018-10-23 20:27:38,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:27:38,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:27:38,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:27:38,189 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:27:38,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (1/1) ... [2018-10-23 20:27:38,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (1/1) ... [2018-10-23 20:27:38,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:27:38,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:27:38,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:27:38,403 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:27:38,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (1/1) ... [2018-10-23 20:27:38,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (1/1) ... [2018-10-23 20:27:38,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (1/1) ... [2018-10-23 20:27:38,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (1/1) ... [2018-10-23 20:27:38,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (1/1) ... [2018-10-23 20:27:38,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (1/1) ... [2018-10-23 20:27:38,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (1/1) ... [2018-10-23 20:27:38,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:27:38,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:27:38,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:27:38,503 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:27:38,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (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 [2018-10-23 20:27:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:27:38,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:27:38,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:27:42,439 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:27:42,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:27:42 BoogieIcfgContainer [2018-10-23 20:27:42,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:27:42,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:27:42,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:27:42,445 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:27:42,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:27:37" (1/3) ... [2018-10-23 20:27:42,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee9cc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:27:42, skipping insertion in model container [2018-10-23 20:27:42,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:38" (2/3) ... [2018-10-23 20:27:42,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee9cc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:27:42, skipping insertion in model container [2018-10-23 20:27:42,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:27:42" (3/3) ... [2018-10-23 20:27:42,449 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label53_true-unreach-call_false-termination.c [2018-10-23 20:27:42,459 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:27:42,468 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:27:42,486 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:27:42,521 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:27:42,522 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:27:42,522 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:27:42,523 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:27:42,523 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:27:42,523 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:27:42,523 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:27:42,524 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:27:42,524 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:27:42,549 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2018-10-23 20:27:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-23 20:27:42,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:27:42,560 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:27:42,563 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:27:42,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:27:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1705034714, now seen corresponding path program 1 times [2018-10-23 20:27:42,570 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:27:42,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:27:42,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:42,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:27:42,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:27:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:27:43,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:27:43,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:27:43,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:27:43,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:27:43,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:27:43,091 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 4 states. [2018-10-23 20:27:46,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:27:46,127 INFO L93 Difference]: Finished difference Result 870 states and 1578 transitions. [2018-10-23 20:27:46,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:27:46,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-23 20:27:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:27:46,154 INFO L225 Difference]: With dead ends: 870 [2018-10-23 20:27:46,154 INFO L226 Difference]: Without dead ends: 617 [2018-10-23 20:27:46,159 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 [2018-10-23 20:27:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2018-10-23 20:27:46,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2018-10-23 20:27:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2018-10-23 20:27:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 940 transitions. [2018-10-23 20:27:46,263 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 940 transitions. Word has length 50 [2018-10-23 20:27:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:27:46,265 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 940 transitions. [2018-10-23 20:27:46,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:27:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 940 transitions. [2018-10-23 20:27:46,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-23 20:27:46,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:27:46,280 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:27:46,281 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:27:46,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:27:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1356226657, now seen corresponding path program 1 times [2018-10-23 20:27:46,282 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:27:46,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:27:46,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:46,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:27:46,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:27:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:27:46,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:27:46,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:27:46,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:27:46,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:27:46,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:27:46,822 INFO L87 Difference]: Start difference. First operand 617 states and 940 transitions. Second operand 6 states. [2018-10-23 20:27:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:27:52,604 INFO L93 Difference]: Finished difference Result 3026 states and 4618 transitions. [2018-10-23 20:27:52,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:27:52,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-10-23 20:27:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:27:52,620 INFO L225 Difference]: With dead ends: 3026 [2018-10-23 20:27:52,620 INFO L226 Difference]: Without dead ends: 2411 [2018-10-23 20:27:52,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:27:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2018-10-23 20:27:52,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1870. [2018-10-23 20:27:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2018-10-23 20:27:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2494 transitions. [2018-10-23 20:27:52,714 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2494 transitions. Word has length 159 [2018-10-23 20:27:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:27:52,714 INFO L481 AbstractCegarLoop]: Abstraction has 1870 states and 2494 transitions. [2018-10-23 20:27:52,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:27:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2494 transitions. [2018-10-23 20:27:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-23 20:27:52,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:27:52,729 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:27:52,730 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:27:52,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:27:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash 156167985, now seen corresponding path program 1 times [2018-10-23 20:27:52,730 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:27:52,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:27:52,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:52,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:27:52,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:27:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-23 20:27:52,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:27:52,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:27:52,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:27:52,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:27:52,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:27:52,973 INFO L87 Difference]: Start difference. First operand 1870 states and 2494 transitions. Second operand 4 states. [2018-10-23 20:27:56,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:27:56,174 INFO L93 Difference]: Finished difference Result 5170 states and 7227 transitions. [2018-10-23 20:27:56,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:27:56,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2018-10-23 20:27:56,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:27:56,191 INFO L225 Difference]: With dead ends: 5170 [2018-10-23 20:27:56,191 INFO L226 Difference]: Without dead ends: 3302 [2018-10-23 20:27:56,194 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 [2018-10-23 20:27:56,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2018-10-23 20:27:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3302. [2018-10-23 20:27:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3302 states. [2018-10-23 20:27:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4301 transitions. [2018-10-23 20:27:56,254 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4301 transitions. Word has length 226 [2018-10-23 20:27:56,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:27:56,255 INFO L481 AbstractCegarLoop]: Abstraction has 3302 states and 4301 transitions. [2018-10-23 20:27:56,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:27:56,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4301 transitions. [2018-10-23 20:27:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-23 20:27:56,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:27:56,261 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:27:56,261 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:27:56,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:27:56,261 INFO L82 PathProgramCache]: Analyzing trace with hash 976070452, now seen corresponding path program 1 times [2018-10-23 20:27:56,261 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:27:56,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:27:56,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:56,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:27:56,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:27:56,705 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-10-23 20:27:56,861 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-23 20:27:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 152 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-23 20:27:56,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:27:56,975 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 [2018-10-23 20:27:56,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:27:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:27:57,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:27:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-23 20:27:57,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:27:57,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 20:27:57,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:27:57,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:27:57,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:27:57,293 INFO L87 Difference]: Start difference. First operand 3302 states and 4301 transitions. Second operand 6 states. [2018-10-23 20:27:58,705 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-23 20:28:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:06,079 INFO L93 Difference]: Finished difference Result 11476 states and 15022 transitions. [2018-10-23 20:28:06,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 20:28:06,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 240 [2018-10-23 20:28:06,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:06,108 INFO L225 Difference]: With dead ends: 11476 [2018-10-23 20:28:06,108 INFO L226 Difference]: Without dead ends: 7605 [2018-10-23 20:28:06,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:28:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2018-10-23 20:28:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 5075. [2018-10-23 20:28:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5075 states. [2018-10-23 20:28:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5075 states to 5075 states and 5965 transitions. [2018-10-23 20:28:06,221 INFO L78 Accepts]: Start accepts. Automaton has 5075 states and 5965 transitions. Word has length 240 [2018-10-23 20:28:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:06,221 INFO L481 AbstractCegarLoop]: Abstraction has 5075 states and 5965 transitions. [2018-10-23 20:28:06,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:28:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5075 states and 5965 transitions. [2018-10-23 20:28:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-10-23 20:28:06,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:06,239 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:28:06,239 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:06,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:06,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1869283549, now seen corresponding path program 1 times [2018-10-23 20:28:06,240 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:06,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:06,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:06,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:06,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:06,783 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-10-23 20:28:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 556 proven. 46 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-10-23 20:28:07,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:28:07,354 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 [2018-10-23 20:28:07,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:07,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:28:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 579 proven. 23 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-10-23 20:28:07,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:28:07,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-23 20:28:07,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:28:07,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:28:07,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:28:07,896 INFO L87 Difference]: Start difference. First operand 5075 states and 5965 transitions. Second operand 9 states. [2018-10-23 20:28:09,218 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2018-10-23 20:28:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:11,181 INFO L93 Difference]: Finished difference Result 10411 states and 12198 transitions. [2018-10-23 20:28:11,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:28:11,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 546 [2018-10-23 20:28:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:11,205 INFO L225 Difference]: With dead ends: 10411 [2018-10-23 20:28:11,206 INFO L226 Difference]: Without dead ends: 5517 [2018-10-23 20:28:11,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:28:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2018-10-23 20:28:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5254. [2018-10-23 20:28:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5254 states. [2018-10-23 20:28:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 6144 transitions. [2018-10-23 20:28:11,303 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 6144 transitions. Word has length 546 [2018-10-23 20:28:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:11,304 INFO L481 AbstractCegarLoop]: Abstraction has 5254 states and 6144 transitions. [2018-10-23 20:28:11,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:28:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 6144 transitions. [2018-10-23 20:28:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-10-23 20:28:11,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:11,327 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:28:11,328 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:11,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:11,328 INFO L82 PathProgramCache]: Analyzing trace with hash 858768957, now seen corresponding path program 1 times [2018-10-23 20:28:11,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:11,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:11,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:11,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:11,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 1040 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-23 20:28:11,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:28:11,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:28:11,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:28:11,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:28:11,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:28:11,976 INFO L87 Difference]: Start difference. First operand 5254 states and 6144 transitions. Second operand 4 states. [2018-10-23 20:28:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:14,496 INFO L93 Difference]: Finished difference Result 12833 states and 15192 transitions. [2018-10-23 20:28:14,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:28:14,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 603 [2018-10-23 20:28:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:14,526 INFO L225 Difference]: With dead ends: 12833 [2018-10-23 20:28:14,526 INFO L226 Difference]: Without dead ends: 7760 [2018-10-23 20:28:14,534 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 [2018-10-23 20:28:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2018-10-23 20:28:14,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 7760. [2018-10-23 20:28:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7760 states. [2018-10-23 20:28:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7760 states to 7760 states and 8862 transitions. [2018-10-23 20:28:14,703 INFO L78 Accepts]: Start accepts. Automaton has 7760 states and 8862 transitions. Word has length 603 [2018-10-23 20:28:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:14,703 INFO L481 AbstractCegarLoop]: Abstraction has 7760 states and 8862 transitions. [2018-10-23 20:28:14,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:28:14,704 INFO L276 IsEmpty]: Start isEmpty. Operand 7760 states and 8862 transitions. [2018-10-23 20:28:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2018-10-23 20:28:14,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:14,730 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:28:14,730 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:14,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:14,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1547299867, now seen corresponding path program 1 times [2018-10-23 20:28:14,731 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:14,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:14,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:14,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:14,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:15,257 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 20:28:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1546 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2018-10-23 20:28:15,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:28:15,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:28:15,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:28:15,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:28:15,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:28:15,573 INFO L87 Difference]: Start difference. First operand 7760 states and 8862 transitions. Second operand 3 states. [2018-10-23 20:28:16,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:16,755 INFO L93 Difference]: Finished difference Result 16055 states and 18466 transitions. [2018-10-23 20:28:16,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:28:16,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 717 [2018-10-23 20:28:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:16,779 INFO L225 Difference]: With dead ends: 16055 [2018-10-23 20:28:16,780 INFO L226 Difference]: Without dead ends: 8476 [2018-10-23 20:28:16,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:28:16,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2018-10-23 20:28:16,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 8476. [2018-10-23 20:28:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8476 states. [2018-10-23 20:28:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 9463 transitions. [2018-10-23 20:28:16,900 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 9463 transitions. Word has length 717 [2018-10-23 20:28:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:16,901 INFO L481 AbstractCegarLoop]: Abstraction has 8476 states and 9463 transitions. [2018-10-23 20:28:16,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:28:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 9463 transitions. [2018-10-23 20:28:16,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2018-10-23 20:28:16,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:16,941 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, 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:28:16,941 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:16,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:16,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1003385662, now seen corresponding path program 1 times [2018-10-23 20:28:16,942 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:16,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:16,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:16,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:16,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2329 backedges. 1639 proven. 201 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-10-23 20:28:18,959 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:28:18,959 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 [2018-10-23 20:28:18,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:19,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:28:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2329 backedges. 1546 proven. 93 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2018-10-23 20:28:20,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:28:20,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 8 [2018-10-23 20:28:20,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:28:20,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:28:20,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:28:20,240 INFO L87 Difference]: Start difference. First operand 8476 states and 9463 transitions. Second operand 9 states. [2018-10-23 20:28:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:23,311 INFO L93 Difference]: Finished difference Result 17606 states and 19786 transitions. [2018-10-23 20:28:23,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 20:28:23,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 883 [2018-10-23 20:28:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:23,326 INFO L225 Difference]: With dead ends: 17606 [2018-10-23 20:28:23,326 INFO L226 Difference]: Without dead ends: 9311 [2018-10-23 20:28:23,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-10-23 20:28:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9311 states. [2018-10-23 20:28:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9311 to 9012. [2018-10-23 20:28:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9012 states. [2018-10-23 20:28:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 10035 transitions. [2018-10-23 20:28:23,448 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 10035 transitions. Word has length 883 [2018-10-23 20:28:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:23,450 INFO L481 AbstractCegarLoop]: Abstraction has 9012 states and 10035 transitions. [2018-10-23 20:28:23,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:28:23,450 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 10035 transitions. [2018-10-23 20:28:23,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2018-10-23 20:28:23,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:23,471 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2018-10-23 20:28:23,471 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:23,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:23,472 INFO L82 PathProgramCache]: Analyzing trace with hash -406949178, now seen corresponding path program 1 times [2018-10-23 20:28:23,472 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:23,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:23,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:23,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:23,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:24,455 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 20:28:24,745 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-23 20:28:24,949 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 20:28:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 808 proven. 617 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2018-10-23 20:28:27,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:28:27,036 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 [2018-10-23 20:28:27,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:27,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:28:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2598 backedges. 1370 proven. 55 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2018-10-23 20:28:29,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:28:29,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-10-23 20:28:29,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:28:29,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:28:29,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:28:29,031 INFO L87 Difference]: Start difference. First operand 9012 states and 10035 transitions. Second operand 8 states. [2018-10-23 20:28:32,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:32,561 INFO L93 Difference]: Finished difference Result 20269 states and 22466 transitions. [2018-10-23 20:28:32,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 20:28:32,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 951 [2018-10-23 20:28:32,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:32,583 INFO L225 Difference]: With dead ends: 20269 [2018-10-23 20:28:32,584 INFO L226 Difference]: Without dead ends: 11438 [2018-10-23 20:28:32,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 961 GetRequests, 950 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-10-23 20:28:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11438 states. [2018-10-23 20:28:32,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11438 to 9012. [2018-10-23 20:28:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9012 states. [2018-10-23 20:28:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 10025 transitions. [2018-10-23 20:28:32,719 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 10025 transitions. Word has length 951 [2018-10-23 20:28:32,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:32,721 INFO L481 AbstractCegarLoop]: Abstraction has 9012 states and 10025 transitions. [2018-10-23 20:28:32,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:28:32,721 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 10025 transitions. [2018-10-23 20:28:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2018-10-23 20:28:32,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:32,744 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:28:32,744 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:32,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:32,745 INFO L82 PathProgramCache]: Analyzing trace with hash -23615872, now seen corresponding path program 1 times [2018-10-23 20:28:32,745 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:32,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:32,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:32,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:32,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 1479 proven. 0 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2018-10-23 20:28:33,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:28:33,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:28:33,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:28:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:28:33,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:28:33,881 INFO L87 Difference]: Start difference. First operand 9012 states and 10025 transitions. Second operand 7 states. [2018-10-23 20:28:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:35,910 INFO L93 Difference]: Finished difference Result 18464 states and 20594 transitions. [2018-10-23 20:28:35,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:28:35,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 954 [2018-10-23 20:28:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:35,931 INFO L225 Difference]: With dead ends: 18464 [2018-10-23 20:28:35,932 INFO L226 Difference]: Without dead ends: 9009 [2018-10-23 20:28:35,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:28:35,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9009 states. [2018-10-23 20:28:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9009 to 9009. [2018-10-23 20:28:36,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9009 states. [2018-10-23 20:28:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9009 states to 9009 states and 9941 transitions. [2018-10-23 20:28:36,047 INFO L78 Accepts]: Start accepts. Automaton has 9009 states and 9941 transitions. Word has length 954 [2018-10-23 20:28:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:36,048 INFO L481 AbstractCegarLoop]: Abstraction has 9009 states and 9941 transitions. [2018-10-23 20:28:36,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:28:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 9009 states and 9941 transitions. [2018-10-23 20:28:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2018-10-23 20:28:36,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:36,065 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:28:36,065 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:36,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:36,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1719850170, now seen corresponding path program 1 times [2018-10-23 20:28:36,066 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:36,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:36,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:36,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:36,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 1599 proven. 0 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2018-10-23 20:28:37,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:28:37,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:28:37,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:28:37,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:28:37,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:28:37,075 INFO L87 Difference]: Start difference. First operand 9009 states and 9941 transitions. Second operand 5 states. [2018-10-23 20:28:39,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:39,407 INFO L93 Difference]: Finished difference Result 20368 states and 22523 transitions. [2018-10-23 20:28:39,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:28:39,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 961 [2018-10-23 20:28:39,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:39,420 INFO L225 Difference]: With dead ends: 20368 [2018-10-23 20:28:39,420 INFO L226 Difference]: Without dead ends: 11540 [2018-10-23 20:28:39,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:28:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11540 states. [2018-10-23 20:28:39,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11540 to 9915. [2018-10-23 20:28:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9915 states. [2018-10-23 20:28:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 11014 transitions. [2018-10-23 20:28:39,563 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 11014 transitions. Word has length 961 [2018-10-23 20:28:39,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:39,563 INFO L481 AbstractCegarLoop]: Abstraction has 9915 states and 11014 transitions. [2018-10-23 20:28:39,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:28:39,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 11014 transitions. [2018-10-23 20:28:39,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2018-10-23 20:28:39,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:39,580 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2018-10-23 20:28:39,581 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:39,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash 514789948, now seen corresponding path program 1 times [2018-10-23 20:28:39,581 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:39,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:39,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:39,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:39,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:40,463 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-23 20:28:40,648 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 20:28:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1113 proven. 323 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2018-10-23 20:28:42,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:28:42,334 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 [2018-10-23 20:28:42,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:42,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:28:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1429 proven. 7 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2018-10-23 20:28:43,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:28:43,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2018-10-23 20:28:43,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:28:43,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:28:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:28:43,936 INFO L87 Difference]: Start difference. First operand 9915 states and 11014 transitions. Second operand 7 states. [2018-10-23 20:28:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:48,565 INFO L93 Difference]: Finished difference Result 24270 states and 26671 transitions. [2018-10-23 20:28:48,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 20:28:48,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 962 [2018-10-23 20:28:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:48,583 INFO L225 Difference]: With dead ends: 24270 [2018-10-23 20:28:48,583 INFO L226 Difference]: Without dead ends: 14232 [2018-10-23 20:28:48,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 961 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:28:48,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14232 states. [2018-10-23 20:28:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14232 to 10161. [2018-10-23 20:28:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10161 states. [2018-10-23 20:28:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10161 states to 10161 states and 11243 transitions. [2018-10-23 20:28:48,738 INFO L78 Accepts]: Start accepts. Automaton has 10161 states and 11243 transitions. Word has length 962 [2018-10-23 20:28:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:48,739 INFO L481 AbstractCegarLoop]: Abstraction has 10161 states and 11243 transitions. [2018-10-23 20:28:48,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:28:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 10161 states and 11243 transitions. [2018-10-23 20:28:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-10-23 20:28:48,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:48,760 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:28:48,761 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:48,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:48,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1123744733, now seen corresponding path program 1 times [2018-10-23 20:28:48,761 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:48,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:48,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:48,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:48,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3738 backedges. 1079 proven. 0 refuted. 0 times theorem prover too weak. 2659 trivial. 0 not checked. [2018-10-23 20:28:49,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:28:49,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:28:49,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:28:49,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:28:49,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:28:49,683 INFO L87 Difference]: Start difference. First operand 10161 states and 11243 transitions. Second operand 4 states. [2018-10-23 20:28:51,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:51,672 INFO L93 Difference]: Finished difference Result 21027 states and 23348 transitions. [2018-10-23 20:28:51,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:28:51,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1070 [2018-10-23 20:28:51,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:51,684 INFO L225 Difference]: With dead ends: 21027 [2018-10-23 20:28:51,684 INFO L226 Difference]: Without dead ends: 11047 [2018-10-23 20:28:51,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:28:51,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11047 states. [2018-10-23 20:28:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11047 to 10809. [2018-10-23 20:28:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10809 states. [2018-10-23 20:28:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10809 states to 10809 states and 11642 transitions. [2018-10-23 20:28:51,825 INFO L78 Accepts]: Start accepts. Automaton has 10809 states and 11642 transitions. Word has length 1070 [2018-10-23 20:28:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:51,826 INFO L481 AbstractCegarLoop]: Abstraction has 10809 states and 11642 transitions. [2018-10-23 20:28:51,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:28:51,827 INFO L276 IsEmpty]: Start isEmpty. Operand 10809 states and 11642 transitions. [2018-10-23 20:28:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2018-10-23 20:28:51,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:51,844 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:28:51,844 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:51,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:51,845 INFO L82 PathProgramCache]: Analyzing trace with hash 574050992, now seen corresponding path program 1 times [2018-10-23 20:28:51,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:51,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:51,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:51,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:51,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:52,659 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 20:28:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3779 backedges. 1762 proven. 0 refuted. 0 times theorem prover too weak. 2017 trivial. 0 not checked. [2018-10-23 20:28:53,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:28:53,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:28:53,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:28:53,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:28:53,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:28:53,189 INFO L87 Difference]: Start difference. First operand 10809 states and 11642 transitions. Second operand 5 states. [2018-10-23 20:28:55,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:55,220 INFO L93 Difference]: Finished difference Result 20350 states and 21934 transitions. [2018-10-23 20:28:55,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:28:55,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1088 [2018-10-23 20:28:55,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:55,229 INFO L225 Difference]: With dead ends: 20350 [2018-10-23 20:28:55,229 INFO L226 Difference]: Without dead ends: 9722 [2018-10-23 20:28:55,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:28:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9722 states. [2018-10-23 20:28:55,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9722 to 9722. [2018-10-23 20:28:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9722 states. [2018-10-23 20:28:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9722 states to 9722 states and 10203 transitions. [2018-10-23 20:28:55,331 INFO L78 Accepts]: Start accepts. Automaton has 9722 states and 10203 transitions. Word has length 1088 [2018-10-23 20:28:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:55,331 INFO L481 AbstractCegarLoop]: Abstraction has 9722 states and 10203 transitions. [2018-10-23 20:28:55,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:28:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 9722 states and 10203 transitions. [2018-10-23 20:28:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1521 [2018-10-23 20:28:55,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:55,351 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:28:55,351 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:55,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:55,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1168062938, now seen corresponding path program 1 times [2018-10-23 20:28:55,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:55,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:55,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:55,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:55,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7278 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 6703 trivial. 0 not checked. [2018-10-23 20:28:57,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:28:57,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:28:57,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:28:57,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:28:57,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:28:57,049 INFO L87 Difference]: Start difference. First operand 9722 states and 10203 transitions. Second operand 4 states. [2018-10-23 20:28:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:28:58,176 INFO L93 Difference]: Finished difference Result 22660 states and 23772 transitions. [2018-10-23 20:28:58,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:28:58,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1520 [2018-10-23 20:28:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:28:58,187 INFO L225 Difference]: With dead ends: 22660 [2018-10-23 20:28:58,188 INFO L226 Difference]: Without dead ends: 11859 [2018-10-23 20:28:58,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:28:58,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11859 states. [2018-10-23 20:28:58,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11859 to 11679. [2018-10-23 20:28:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11679 states. [2018-10-23 20:28:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11679 states to 11679 states and 12120 transitions. [2018-10-23 20:28:58,322 INFO L78 Accepts]: Start accepts. Automaton has 11679 states and 12120 transitions. Word has length 1520 [2018-10-23 20:28:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:28:58,324 INFO L481 AbstractCegarLoop]: Abstraction has 11679 states and 12120 transitions. [2018-10-23 20:28:58,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:28:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 11679 states and 12120 transitions. [2018-10-23 20:28:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1677 [2018-10-23 20:28:58,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:28:58,352 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:28:58,352 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:28:58,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:28:58,353 INFO L82 PathProgramCache]: Analyzing trace with hash 487171339, now seen corresponding path program 1 times [2018-10-23 20:28:58,353 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:28:58,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:28:58,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:58,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:28:58,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:28:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:28:59,232 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 20:29:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8598 backedges. 2918 proven. 0 refuted. 0 times theorem prover too weak. 5680 trivial. 0 not checked. [2018-10-23 20:29:00,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:29:00,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:29:00,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:29:00,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:29:00,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:29:00,394 INFO L87 Difference]: Start difference. First operand 11679 states and 12120 transitions. Second operand 4 states. [2018-10-23 20:29:01,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:29:01,498 INFO L93 Difference]: Finished difference Result 22278 states and 23135 transitions. [2018-10-23 20:29:01,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:29:01,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1676 [2018-10-23 20:29:01,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:29:01,503 INFO L225 Difference]: With dead ends: 22278 [2018-10-23 20:29:01,503 INFO L226 Difference]: Without dead ends: 5202 [2018-10-23 20:29:01,510 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 [2018-10-23 20:29:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5202 states. [2018-10-23 20:29:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5202 to 4843. [2018-10-23 20:29:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4843 states. [2018-10-23 20:29:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 4942 transitions. [2018-10-23 20:29:01,561 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 4942 transitions. Word has length 1676 [2018-10-23 20:29:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:29:01,562 INFO L481 AbstractCegarLoop]: Abstraction has 4843 states and 4942 transitions. [2018-10-23 20:29:01,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:29:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 4942 transitions. [2018-10-23 20:29:01,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1749 [2018-10-23 20:29:01,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:29:01,580 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:29:01,580 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:29:01,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:29:01,581 INFO L82 PathProgramCache]: Analyzing trace with hash -126785660, now seen corresponding path program 1 times [2018-10-23 20:29:01,581 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:29:01,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:29:01,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:01,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:01,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9888 backedges. 4874 proven. 393 refuted. 0 times theorem prover too weak. 4621 trivial. 0 not checked. [2018-10-23 20:29:04,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:29:04,121 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:29:04,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:04,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:29:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9888 backedges. 2867 proven. 179 refuted. 0 times theorem prover too weak. 6842 trivial. 0 not checked. [2018-10-23 20:29:06,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:29:06,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2018-10-23 20:29:06,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:29:06,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:29:06,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:29:06,646 INFO L87 Difference]: Start difference. First operand 4843 states and 4942 transitions. Second operand 10 states. [2018-10-23 20:29:14,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:29:14,741 INFO L93 Difference]: Finished difference Result 14353 states and 14708 transitions. [2018-10-23 20:29:14,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 20:29:14,748 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1748 [2018-10-23 20:29:14,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:29:14,757 INFO L225 Difference]: With dead ends: 14353 [2018-10-23 20:29:14,757 INFO L226 Difference]: Without dead ends: 7715 [2018-10-23 20:29:14,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1774 GetRequests, 1754 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-10-23 20:29:14,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7715 states. [2018-10-23 20:29:14,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7715 to 4842. [2018-10-23 20:29:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4842 states. [2018-10-23 20:29:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 4918 transitions. [2018-10-23 20:29:14,842 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 4918 transitions. Word has length 1748 [2018-10-23 20:29:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:29:14,843 INFO L481 AbstractCegarLoop]: Abstraction has 4842 states and 4918 transitions. [2018-10-23 20:29:14,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:29:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 4918 transitions. [2018-10-23 20:29:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1920 [2018-10-23 20:29:14,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:29:14,874 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:29:14,875 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:29:14,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:29:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash -813060872, now seen corresponding path program 1 times [2018-10-23 20:29:14,876 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:29:14,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:29:14,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:14,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:14,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11629 backedges. 3245 proven. 0 refuted. 0 times theorem prover too weak. 8384 trivial. 0 not checked. [2018-10-23 20:29:18,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:29:18,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:29:18,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:29:18,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:29:18,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:29:18,761 INFO L87 Difference]: Start difference. First operand 4842 states and 4918 transitions. Second operand 7 states. [2018-10-23 20:29:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:29:19,970 INFO L93 Difference]: Finished difference Result 7205 states and 7335 transitions. [2018-10-23 20:29:19,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:29:19,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1919 [2018-10-23 20:29:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:29:19,974 INFO L225 Difference]: With dead ends: 7205 [2018-10-23 20:29:19,975 INFO L226 Difference]: Without dead ends: 4662 [2018-10-23 20:29:19,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:29:19,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2018-10-23 20:29:20,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 4662. [2018-10-23 20:29:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4662 states. [2018-10-23 20:29:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4662 states to 4662 states and 4725 transitions. [2018-10-23 20:29:20,015 INFO L78 Accepts]: Start accepts. Automaton has 4662 states and 4725 transitions. Word has length 1919 [2018-10-23 20:29:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:29:20,016 INFO L481 AbstractCegarLoop]: Abstraction has 4662 states and 4725 transitions. [2018-10-23 20:29:20,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:29:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4662 states and 4725 transitions. [2018-10-23 20:29:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2053 [2018-10-23 20:29:20,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:29:20,039 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 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, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:29:20,039 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:29:20,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:29:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash -256691129, now seen corresponding path program 1 times [2018-10-23 20:29:20,040 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:29:20,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:29:20,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:20,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:20,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:29:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13345 backedges. 3459 proven. 120 refuted. 0 times theorem prover too weak. 9766 trivial. 0 not checked. [2018-10-23 20:29:23,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:29:23,152 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:29:23,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:29:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:29:23,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:29:23,875 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-10-23 20:29:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13345 backedges. 3483 proven. 96 refuted. 0 times theorem prover too weak. 9766 trivial. 0 not checked. [2018-10-23 20:29:28,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:29:28,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2018-10-23 20:29:28,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:29:28,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:29:28,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:29:28,813 INFO L87 Difference]: Start difference. First operand 4662 states and 4725 transitions. Second operand 10 states. [2018-10-23 20:29:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:29:36,936 INFO L93 Difference]: Finished difference Result 9156 states and 9290 transitions. [2018-10-23 20:29:36,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:29:36,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2052 [2018-10-23 20:29:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:29:36,938 INFO L225 Difference]: With dead ends: 9156 [2018-10-23 20:29:36,938 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 20:29:36,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2066 GetRequests, 2053 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:29:36,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 20:29:36,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 20:29:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 20:29:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 20:29:36,942 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2052 [2018-10-23 20:29:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:29:36,943 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 20:29:36,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:29:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 20:29:36,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 20:29:36,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 20:29:37,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,157 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,328 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,433 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,625 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,767 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,878 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:37,922 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,078 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 579 DAG size of output: 422 [2018-10-23 20:29:38,116 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,139 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,219 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,295 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,386 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,468 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,613 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,648 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,715 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,746 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,825 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:29:38,954 WARN L179 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 579 DAG size of output: 422 Received shutdown request... [2018-10-23 20:31:40,021 WARN L187 SmtUtils]: Removed 26 from assertion stack [2018-10-23 20:31:40,021 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-23 20:31:40,022 INFO L168 Benchmark]: Toolchain (without parser) took 242629.27 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -338.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 20:31:40,023 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 20:31:40,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:31:40,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 213.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -857.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:31:40,025 INFO L168 Benchmark]: Boogie Preprocessor took 99.43 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:31:40,026 INFO L168 Benchmark]: RCFGBuilder took 3937.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 141.3 MB). Peak memory consumption was 141.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:31:40,027 INFO L168 Benchmark]: TraceAbstraction took 237580.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 321.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 20:31:40,032 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 792.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 213.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -857.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.43 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3937.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 141.3 MB). Peak memory consumption was 141.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237580.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 321.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 151]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 364. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown