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/Problem15_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:32:36,482 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:32:36,485 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:32:36,502 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:32:36,502 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:32:36,504 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:32:36,506 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:32:36,508 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:32:36,511 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:32:36,512 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:32:36,519 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:32:36,520 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:32:36,522 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:32:36,524 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:32:36,525 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:32:36,528 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:32:36,529 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:32:36,534 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:32:36,540 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:32:36,541 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:32:36,542 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:32:36,545 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:32:36,553 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:32:36,553 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:32:36,554 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:32:36,555 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:32:36,556 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:32:36,557 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:32:36,559 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:32:36,560 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:32:36,560 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:32:36,563 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:32:36,567 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:32:36,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:32:36,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:32:36,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:32:36,591 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:32:36,593 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:32:36,593 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:32:36,593 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:32:36,594 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:32:36,594 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:32:36,594 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:32:36,594 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:32:36,594 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:32:36,594 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:32:36,596 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:32:36,596 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:32:36,596 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:32:36,596 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:32:36,597 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:32:36,597 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:32:36,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:32:36,597 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:32:36,597 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:32:36,598 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:32:36,599 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:32:36,599 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:32:36,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:32:36,599 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:32:36,600 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:32:36,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:32:36,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:32:36,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:32:36,676 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:32:36,677 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:32:36,677 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label13_true-unreach-call.c [2018-10-24 16:32:36,750 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/399fdf145/d03417d43ecf4561887d5104f5714ae2/FLAG6b0fc4f2c [2018-10-24 16:32:37,480 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:32:37,482 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label13_true-unreach-call.c [2018-10-24 16:32:37,505 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/399fdf145/d03417d43ecf4561887d5104f5714ae2/FLAG6b0fc4f2c [2018-10-24 16:32:37,527 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/399fdf145/d03417d43ecf4561887d5104f5714ae2 [2018-10-24 16:32:37,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:32:37,540 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:32:37,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:32:37,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:32:37,545 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:32:37,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:32:37" (1/1) ... [2018-10-24 16:32:37,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6628d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:37, skipping insertion in model container [2018-10-24 16:32:37,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:32:37" (1/1) ... [2018-10-24 16:32:37,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:32:37,660 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:32:38,401 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:32:38,405 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:32:38,691 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:32:38,712 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:32:38,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38 WrapperNode [2018-10-24 16:32:38,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:32:38,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:32:38,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:32:38,714 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:32:38,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (1/1) ... [2018-10-24 16:32:38,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (1/1) ... [2018-10-24 16:32:39,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:32:39,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:32:39,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:32:39,088 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:32:39,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (1/1) ... [2018-10-24 16:32:39,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (1/1) ... [2018-10-24 16:32:39,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (1/1) ... [2018-10-24 16:32:39,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (1/1) ... [2018-10-24 16:32:39,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (1/1) ... [2018-10-24 16:32:39,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (1/1) ... [2018-10-24 16:32:39,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (1/1) ... [2018-10-24 16:32:39,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:32:39,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:32:39,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:32:39,328 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:32:39,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (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 [2018-10-24 16:32:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:32:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:32:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:32:48,112 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:32:48,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:32:48 BoogieIcfgContainer [2018-10-24 16:32:48,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:32:48,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:32:48,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:32:48,118 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:32:48,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:32:37" (1/3) ... [2018-10-24 16:32:48,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f65e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:32:48, skipping insertion in model container [2018-10-24 16:32:48,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:32:38" (2/3) ... [2018-10-24 16:32:48,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f65e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:32:48, skipping insertion in model container [2018-10-24 16:32:48,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:32:48" (3/3) ... [2018-10-24 16:32:48,123 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label13_true-unreach-call.c [2018-10-24 16:32:48,133 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:32:48,143 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:32:48,162 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:32:48,204 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:32:48,204 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:32:48,205 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:32:48,205 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:32:48,205 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:32:48,205 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:32:48,205 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:32:48,206 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:32:48,206 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:32:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-24 16:32:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 16:32:48,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:48,247 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] [2018-10-24 16:32:48,250 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:48,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:48,255 INFO L82 PathProgramCache]: Analyzing trace with hash 55000978, now seen corresponding path program 1 times [2018-10-24 16:32:48,257 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:48,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:48,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:48,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:48,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:48,715 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 16:32:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:32:48,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:48,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:32:48,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:32:48,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:32:48,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:48,756 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-24 16:32:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:32:56,784 INFO L93 Difference]: Finished difference Result 1510 states and 2778 transitions. [2018-10-24 16:32:56,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:32:56,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-24 16:32:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:32:56,818 INFO L225 Difference]: With dead ends: 1510 [2018-10-24 16:32:56,818 INFO L226 Difference]: Without dead ends: 1078 [2018-10-24 16:32:56,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:56,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2018-10-24 16:32:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 742. [2018-10-24 16:32:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2018-10-24 16:32:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1239 transitions. [2018-10-24 16:32:56,949 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1239 transitions. Word has length 49 [2018-10-24 16:32:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:32:56,950 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 1239 transitions. [2018-10-24 16:32:56,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:32:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1239 transitions. [2018-10-24 16:32:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 16:32:56,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:32:56,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:32:56,957 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:32:56,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:32:56,958 INFO L82 PathProgramCache]: Analyzing trace with hash 50618019, now seen corresponding path program 1 times [2018-10-24 16:32:56,958 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:32:56,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:32:56,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:56,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:32:56,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:32:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:32:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:32:57,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:32:57,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:32:57,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:32:57,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:32:57,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:32:57,216 INFO L87 Difference]: Start difference. First operand 742 states and 1239 transitions. Second operand 4 states. [2018-10-24 16:33:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:03,187 INFO L93 Difference]: Finished difference Result 2749 states and 4685 transitions. [2018-10-24 16:33:03,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:33:03,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-24 16:33:03,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:03,201 INFO L225 Difference]: With dead ends: 2749 [2018-10-24 16:33:03,201 INFO L226 Difference]: Without dead ends: 2009 [2018-10-24 16:33:03,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:33:03,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2018-10-24 16:33:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1342. [2018-10-24 16:33:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2018-10-24 16:33:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 2021 transitions. [2018-10-24 16:33:03,244 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 2021 transitions. Word has length 118 [2018-10-24 16:33:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:03,245 INFO L481 AbstractCegarLoop]: Abstraction has 1342 states and 2021 transitions. [2018-10-24 16:33:03,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:33:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 2021 transitions. [2018-10-24 16:33:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 16:33:03,248 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:03,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:33:03,249 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:03,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2043006793, now seen corresponding path program 1 times [2018-10-24 16:33:03,249 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:03,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:03,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:03,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:03,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:03,889 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 13 [2018-10-24 16:33:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:33:03,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:33:03,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:33:03,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:33:03,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:33:03,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:33:03,989 INFO L87 Difference]: Start difference. First operand 1342 states and 2021 transitions. Second operand 6 states. [2018-10-24 16:33:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:15,920 INFO L93 Difference]: Finished difference Result 5410 states and 8155 transitions. [2018-10-24 16:33:15,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:33:15,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-24 16:33:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:15,942 INFO L225 Difference]: With dead ends: 5410 [2018-10-24 16:33:15,942 INFO L226 Difference]: Without dead ends: 4070 [2018-10-24 16:33:15,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:33:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2018-10-24 16:33:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 3753. [2018-10-24 16:33:16,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3753 states. [2018-10-24 16:33:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 4926 transitions. [2018-10-24 16:33:16,021 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 4926 transitions. Word has length 126 [2018-10-24 16:33:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:16,022 INFO L481 AbstractCegarLoop]: Abstraction has 3753 states and 4926 transitions. [2018-10-24 16:33:16,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:33:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 4926 transitions. [2018-10-24 16:33:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 16:33:16,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:16,027 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:33:16,028 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:16,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash 947509284, now seen corresponding path program 1 times [2018-10-24 16:33:16,028 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:16,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:16,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:16,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:16,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 164 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:33:16,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:33:16,554 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:33:16,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:16,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:33:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 93 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:33:17,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:33:17,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2018-10-24 16:33:17,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 16:33:17,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 16:33:17,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:33:17,423 INFO L87 Difference]: Start difference. First operand 3753 states and 4926 transitions. Second operand 12 states. [2018-10-24 16:33:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:33,172 INFO L93 Difference]: Finished difference Result 12338 states and 16539 transitions. [2018-10-24 16:33:33,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 16:33:33,175 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 218 [2018-10-24 16:33:33,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:33,204 INFO L225 Difference]: With dead ends: 12338 [2018-10-24 16:33:33,204 INFO L226 Difference]: Without dead ends: 6160 [2018-10-24 16:33:33,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2018-10-24 16:33:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2018-10-24 16:33:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 5550. [2018-10-24 16:33:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5550 states. [2018-10-24 16:33:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5550 states to 5550 states and 6502 transitions. [2018-10-24 16:33:33,313 INFO L78 Accepts]: Start accepts. Automaton has 5550 states and 6502 transitions. Word has length 218 [2018-10-24 16:33:33,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:33,313 INFO L481 AbstractCegarLoop]: Abstraction has 5550 states and 6502 transitions. [2018-10-24 16:33:33,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 16:33:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5550 states and 6502 transitions. [2018-10-24 16:33:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-24 16:33:33,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:33,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:33:33,321 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:33,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:33,321 INFO L82 PathProgramCache]: Analyzing trace with hash 74061102, now seen corresponding path program 1 times [2018-10-24 16:33:33,321 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:33,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:33,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:33,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:33,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:33:33,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:33:33,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:33:33,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:33:33,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:33:33,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:33:33,800 INFO L87 Difference]: Start difference. First operand 5550 states and 6502 transitions. Second operand 4 states. [2018-10-24 16:33:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:38,505 INFO L93 Difference]: Finished difference Result 16203 states and 19528 transitions. [2018-10-24 16:33:38,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:33:38,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2018-10-24 16:33:38,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:38,559 INFO L225 Difference]: With dead ends: 16203 [2018-10-24 16:33:38,560 INFO L226 Difference]: Without dead ends: 10655 [2018-10-24 16:33:38,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:33:38,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10655 states. [2018-10-24 16:33:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10655 to 10348. [2018-10-24 16:33:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10348 states. [2018-10-24 16:33:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 12026 transitions. [2018-10-24 16:33:38,726 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 12026 transitions. Word has length 332 [2018-10-24 16:33:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:38,727 INFO L481 AbstractCegarLoop]: Abstraction has 10348 states and 12026 transitions. [2018-10-24 16:33:38,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:33:38,727 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 12026 transitions. [2018-10-24 16:33:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-10-24 16:33:38,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:38,741 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:33:38,741 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:38,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:38,742 INFO L82 PathProgramCache]: Analyzing trace with hash 773194967, now seen corresponding path program 1 times [2018-10-24 16:33:38,742 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:38,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:38,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:38,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:38,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 282 proven. 11 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-24 16:33:39,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:33:39,431 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:33:39,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:39,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:33:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-24 16:33:39,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:33:39,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-10-24 16:33:39,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:33:39,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:33:39,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:33:39,763 INFO L87 Difference]: Start difference. First operand 10348 states and 12026 transitions. Second operand 8 states. [2018-10-24 16:33:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:33:57,472 INFO L93 Difference]: Finished difference Result 28517 states and 33213 transitions. [2018-10-24 16:33:57,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:33:57,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 505 [2018-10-24 16:33:57,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:33:57,532 INFO L225 Difference]: With dead ends: 28517 [2018-10-24 16:33:57,532 INFO L226 Difference]: Without dead ends: 18171 [2018-10-24 16:33:57,546 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 510 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:33:57,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18171 states. [2018-10-24 16:33:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18171 to 14398. [2018-10-24 16:33:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14398 states. [2018-10-24 16:33:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14398 states to 14398 states and 16186 transitions. [2018-10-24 16:33:57,765 INFO L78 Accepts]: Start accepts. Automaton has 14398 states and 16186 transitions. Word has length 505 [2018-10-24 16:33:57,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:33:57,766 INFO L481 AbstractCegarLoop]: Abstraction has 14398 states and 16186 transitions. [2018-10-24 16:33:57,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:33:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 14398 states and 16186 transitions. [2018-10-24 16:33:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2018-10-24 16:33:57,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:33:57,793 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:33:57,793 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:33:57,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:33:57,794 INFO L82 PathProgramCache]: Analyzing trace with hash -252788540, now seen corresponding path program 1 times [2018-10-24 16:33:57,794 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:33:57,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:33:57,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:57,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:33:57,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:33:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:33:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-10-24 16:33:58,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:33:58,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:33:58,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:33:58,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:33:58,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:33:58,497 INFO L87 Difference]: Start difference. First operand 14398 states and 16186 transitions. Second operand 3 states. [2018-10-24 16:34:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:34:02,622 INFO L93 Difference]: Finished difference Result 29092 states and 32723 transitions. [2018-10-24 16:34:02,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:34:02,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 649 [2018-10-24 16:34:02,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:34:02,648 INFO L225 Difference]: With dead ends: 29092 [2018-10-24 16:34:02,649 INFO L226 Difference]: Without dead ends: 14696 [2018-10-24 16:34:02,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:34:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14696 states. [2018-10-24 16:34:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14696 to 14396. [2018-10-24 16:34:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14396 states. [2018-10-24 16:34:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14396 states to 14396 states and 16182 transitions. [2018-10-24 16:34:02,846 INFO L78 Accepts]: Start accepts. Automaton has 14396 states and 16182 transitions. Word has length 649 [2018-10-24 16:34:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:34:02,847 INFO L481 AbstractCegarLoop]: Abstraction has 14396 states and 16182 transitions. [2018-10-24 16:34:02,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:34:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 14396 states and 16182 transitions. [2018-10-24 16:34:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2018-10-24 16:34:02,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:34:02,889 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:34:02,890 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:34:02,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:34:02,890 INFO L82 PathProgramCache]: Analyzing trace with hash -357435385, now seen corresponding path program 1 times [2018-10-24 16:34:02,890 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:34:02,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:34:02,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:02,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:02,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2018-10-24 16:34:03,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:34:03,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:34:03,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:34:03,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:34:03,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:34:03,825 INFO L87 Difference]: Start difference. First operand 14396 states and 16182 transitions. Second operand 3 states. [2018-10-24 16:34:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:34:06,777 INFO L93 Difference]: Finished difference Result 37535 states and 42086 transitions. [2018-10-24 16:34:06,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:34:06,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 721 [2018-10-24 16:34:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:34:06,822 INFO L225 Difference]: With dead ends: 37535 [2018-10-24 16:34:06,823 INFO L226 Difference]: Without dead ends: 23141 [2018-10-24 16:34:06,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:34:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23141 states. [2018-10-24 16:34:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23141 to 22535. [2018-10-24 16:34:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22535 states. [2018-10-24 16:34:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22535 states to 22535 states and 24912 transitions. [2018-10-24 16:34:07,133 INFO L78 Accepts]: Start accepts. Automaton has 22535 states and 24912 transitions. Word has length 721 [2018-10-24 16:34:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:34:07,134 INFO L481 AbstractCegarLoop]: Abstraction has 22535 states and 24912 transitions. [2018-10-24 16:34:07,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:34:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 22535 states and 24912 transitions. [2018-10-24 16:34:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2018-10-24 16:34:07,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:34:07,171 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:34:07,171 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:34:07,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:34:07,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1383081430, now seen corresponding path program 1 times [2018-10-24 16:34:07,172 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:34:07,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:34:07,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:07,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:07,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:07,872 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-10-24 16:34:08,228 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 10 [2018-10-24 16:34:08,432 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 3 [2018-10-24 16:34:08,776 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 3 [2018-10-24 16:34:09,384 WARN L179 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2018-10-24 16:34:09,895 WARN L179 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2018-10-24 16:34:10,306 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-24 16:34:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 610 proven. 47 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-10-24 16:34:10,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:34:10,975 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:34:10,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:11,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:34:11,901 WARN L179 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 23 [2018-10-24 16:34:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 657 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-10-24 16:34:13,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:34:13,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-10-24 16:34:13,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 16:34:13,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 16:34:13,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:34:13,807 INFO L87 Difference]: Start difference. First operand 22535 states and 24912 transitions. Second operand 11 states. [2018-10-24 16:34:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:34:39,572 INFO L93 Difference]: Finished difference Result 66629 states and 74442 transitions. [2018-10-24 16:34:39,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 16:34:39,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 791 [2018-10-24 16:34:39,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:34:39,647 INFO L225 Difference]: With dead ends: 66629 [2018-10-24 16:34:39,647 INFO L226 Difference]: Without dead ends: 44096 [2018-10-24 16:34:39,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 801 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2018-10-24 16:34:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44096 states. [2018-10-24 16:34:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44096 to 31919. [2018-10-24 16:34:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31919 states. [2018-10-24 16:34:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31919 states to 31919 states and 34787 transitions. [2018-10-24 16:34:40,133 INFO L78 Accepts]: Start accepts. Automaton has 31919 states and 34787 transitions. Word has length 791 [2018-10-24 16:34:40,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:34:40,135 INFO L481 AbstractCegarLoop]: Abstraction has 31919 states and 34787 transitions. [2018-10-24 16:34:40,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 16:34:40,135 INFO L276 IsEmpty]: Start isEmpty. Operand 31919 states and 34787 transitions. [2018-10-24 16:34:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2018-10-24 16:34:40,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:34:40,207 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:34:40,207 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:34:40,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:34:40,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1908435158, now seen corresponding path program 1 times [2018-10-24 16:34:40,208 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:34:40,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:34:40,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:40,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:40,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1854 backedges. 1155 proven. 306 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2018-10-24 16:34:41,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:34:41,910 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:34:41,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:42,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:34:42,425 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 17 [2018-10-24 16:34:46,794 WARN L179 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2018-10-24 16:34:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1854 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2018-10-24 16:34:48,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:34:48,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-10-24 16:34:48,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:34:48,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:34:48,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:34:48,723 INFO L87 Difference]: Start difference. First operand 31919 states and 34787 transitions. Second operand 7 states. [2018-10-24 16:35:02,786 WARN L179 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 51 [2018-10-24 16:35:47,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:47,331 INFO L93 Difference]: Finished difference Result 102368 states and 112160 transitions. [2018-10-24 16:35:47,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:35:47,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1037 [2018-10-24 16:35:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:47,407 INFO L225 Difference]: With dead ends: 102368 [2018-10-24 16:35:47,408 INFO L226 Difference]: Without dead ends: 70451 [2018-10-24 16:35:47,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 1040 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:35:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70451 states. [2018-10-24 16:35:48,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70451 to 62877. [2018-10-24 16:35:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62877 states. [2018-10-24 16:35:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62877 states to 62877 states and 67747 transitions. [2018-10-24 16:35:48,234 INFO L78 Accepts]: Start accepts. Automaton has 62877 states and 67747 transitions. Word has length 1037 [2018-10-24 16:35:48,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:48,235 INFO L481 AbstractCegarLoop]: Abstraction has 62877 states and 67747 transitions. [2018-10-24 16:35:48,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:35:48,235 INFO L276 IsEmpty]: Start isEmpty. Operand 62877 states and 67747 transitions. [2018-10-24 16:35:48,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2018-10-24 16:35:48,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:48,294 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 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, 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:35:48,294 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:48,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:48,295 INFO L82 PathProgramCache]: Analyzing trace with hash -217383129, now seen corresponding path program 1 times [2018-10-24 16:35:48,295 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:48,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:48,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:48,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:48,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2554 backedges. 1998 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2018-10-24 16:35:50,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:35:50,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:35:50,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:35:50,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:35:50,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:35:50,221 INFO L87 Difference]: Start difference. First operand 62877 states and 67747 transitions. Second operand 4 states. [2018-10-24 16:35:53,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:53,996 INFO L93 Difference]: Finished difference Result 123645 states and 133259 transitions. [2018-10-24 16:35:53,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:35:53,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1310 [2018-10-24 16:35:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:53,997 INFO L225 Difference]: With dead ends: 123645 [2018-10-24 16:35:53,997 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 16:35:54,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:35:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 16:35:54,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 16:35:54,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 16:35:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 16:35:54,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1310 [2018-10-24 16:35:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:54,035 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 16:35:54,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:35:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 16:35:54,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 16:35:54,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 16:35:54,109 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,415 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,443 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,456 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,494 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,536 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,544 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,546 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,546 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,611 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,719 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,761 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,786 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:54,947 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,048 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,115 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,203 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,211 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,336 WARN L179 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 650 DAG size of output: 454 [2018-10-24 16:35:55,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,665 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,787 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,798 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,823 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,836 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,876 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,915 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,925 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,925 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:55,988 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,092 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,132 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,155 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,211 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,290 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,387 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,424 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,526 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,534 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,635 WARN L179 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 650 DAG size of output: 454 [2018-10-24 16:35:56,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,822 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,881 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:56,973 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,017 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,080 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,173 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,259 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,478 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 16:35:57,511 WARN L179 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 617 DAG size of output: 434 [2018-10-24 16:36:08,854 WARN L179 SmtUtils]: Spent 11.33 s on a formula simplification. DAG size of input: 426 DAG size of output: 105 [2018-10-24 16:36:36,305 WARN L179 SmtUtils]: Spent 27.45 s on a formula simplification. DAG size of input: 426 DAG size of output: 119 Received shutdown request... [2018-10-24 16:36:39,216 WARN L187 SmtUtils]: Removed 4 from assertion stack [2018-10-24 16:36:39,217 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-24 16:36:39,218 INFO L168 Benchmark]: Toolchain (without parser) took 241678.29 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -647.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:36:39,219 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:36:39,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1171.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:36:39,221 INFO L168 Benchmark]: Boogie Procedure Inliner took 374.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -879.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:36:39,222 INFO L168 Benchmark]: Boogie Preprocessor took 238.98 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: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:36:39,223 INFO L168 Benchmark]: RCFGBuilder took 8786.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 299.8 MB). Peak memory consumption was 299.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:36:39,223 INFO L168 Benchmark]: TraceAbstraction took 231102.54 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.1 GB in the end (delta: -206.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 16:36:39,229 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1171.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 374.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -879.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 238.98 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: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8786.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 299.8 MB). Peak memory consumption was 299.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231102.54 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.1 GB in the end (delta: -206.2 MB). Peak memory consumption was 2.2 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 416. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown