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_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:35:09,672 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:35:09,674 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:35:09,692 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:35:09,692 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:35:09,694 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:35:09,696 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:35:09,699 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:35:09,701 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:35:09,702 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:35:09,703 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:35:09,710 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:35:09,711 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:35:09,712 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:35:09,715 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:35:09,716 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:35:09,716 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:35:09,719 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:35:09,723 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:35:09,725 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:35:09,728 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:35:09,730 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:35:09,733 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:35:09,745 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 16:35:09,773 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:35:09,773 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:35:09,774 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:35:09,774 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:35:09,776 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:35:09,776 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:35:09,776 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:35:09,776 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:35:09,777 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:35:09,777 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:35:09,777 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:35:09,777 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:35:09,777 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:35:09,778 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:35:09,779 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:35:09,779 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:35:09,779 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:35:09,779 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:35:09,780 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:35:09,780 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:35:09,780 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:35:09,780 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:35:09,780 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:35:09,781 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:35:09,782 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:35:09,782 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:35:09,782 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:35:09,783 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:35:09,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:35:09,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:35:09,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:35:09,866 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:35:09,866 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:35:09,867 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-10-24 16:35:09,950 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/52bb26ba7/f7344c81a2214502a90e708ee2c418f8/FLAG941770cf0 [2018-10-24 16:35:10,603 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:35:10,604 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-10-24 16:35:10,626 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/52bb26ba7/f7344c81a2214502a90e708ee2c418f8/FLAG941770cf0 [2018-10-24 16:35:10,646 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/52bb26ba7/f7344c81a2214502a90e708ee2c418f8 [2018-10-24 16:35:10,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:35:10,659 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:35:10,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:35:10,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:35:10,664 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:35:10,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:35:10" (1/1) ... [2018-10-24 16:35:10,668 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 04:35:10, skipping insertion in model container [2018-10-24 16:35:10,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:35:10" (1/1) ... [2018-10-24 16:35:10,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:35:10,763 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:35:11,617 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:35:11,622 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:35:11,908 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:35:11,932 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:35:11,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11 WrapperNode [2018-10-24 16:35:11,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:35:11,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:35:11,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:35:11,934 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:35:11,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... [2018-10-24 16:35:11,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... [2018-10-24 16:35:12,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:35:12,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:35:12,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:35:12,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:35:12,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... [2018-10-24 16:35:12,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... [2018-10-24 16:35:12,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... [2018-10-24 16:35:12,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... [2018-10-24 16:35:12,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... [2018-10-24 16:35:12,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... [2018-10-24 16:35:12,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... [2018-10-24 16:35:12,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:35:12,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:35:12,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:35:12,558 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:35:12,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:35:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:35:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:35:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:35:19,312 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:35:19,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:35:19 BoogieIcfgContainer [2018-10-24 16:35:19,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:35:19,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:35:19,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:35:19,318 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:35:19,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:35:10" (1/3) ... [2018-10-24 16:35:19,320 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 04:35:19, skipping insertion in model container [2018-10-24 16:35:19,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:35:11" (2/3) ... [2018-10-24 16:35:19,320 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 04:35:19, skipping insertion in model container [2018-10-24 16:35:19,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:35:19" (3/3) ... [2018-10-24 16:35:19,322 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label24_true-unreach-call.c [2018-10-24 16:35:19,333 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:35:19,343 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:35:19,361 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:35:19,406 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:35:19,407 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:35:19,407 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:35:19,407 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:35:19,407 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:35:19,408 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:35:19,408 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:35:19,408 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:35:19,408 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:35:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-24 16:35:19,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-24 16:35:19,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:19,455 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] [2018-10-24 16:35:19,458 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:19,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:19,464 INFO L82 PathProgramCache]: Analyzing trace with hash 861450858, now seen corresponding path program 1 times [2018-10-24 16:35:19,466 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:19,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:19,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:19,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:19,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:19,949 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 16:35:19,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:35:19,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:35:19,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:35:19,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:35:19,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:35:19,979 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-24 16:35:27,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:27,767 INFO L93 Difference]: Finished difference Result 1470 states and 2719 transitions. [2018-10-24 16:35:27,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:35:27,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-24 16:35:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:27,796 INFO L225 Difference]: With dead ends: 1470 [2018-10-24 16:35:27,796 INFO L226 Difference]: Without dead ends: 1038 [2018-10-24 16:35:27,802 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 16:35:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-10-24 16:35:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2018-10-24 16:35:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2018-10-24 16:35:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1553 transitions. [2018-10-24 16:35:27,911 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1553 transitions. Word has length 39 [2018-10-24 16:35:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:27,911 INFO L481 AbstractCegarLoop]: Abstraction has 1036 states and 1553 transitions. [2018-10-24 16:35:27,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:35:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1553 transitions. [2018-10-24 16:35:27,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-24 16:35:27,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:27,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:27,917 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:27,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:27,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1100739570, now seen corresponding path program 1 times [2018-10-24 16:35:27,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:27,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:27,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:27,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:27,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:28,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:35:28,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:35:28,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:35:28,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:35:28,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:35:28,203 INFO L87 Difference]: Start difference. First operand 1036 states and 1553 transitions. Second operand 4 states. [2018-10-24 16:35:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:35,535 INFO L93 Difference]: Finished difference Result 3885 states and 5906 transitions. [2018-10-24 16:35:35,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:35:35,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-10-24 16:35:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:35,558 INFO L225 Difference]: With dead ends: 3885 [2018-10-24 16:35:35,558 INFO L226 Difference]: Without dead ends: 2851 [2018-10-24 16:35:35,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 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 16:35:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2018-10-24 16:35:35,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2546. [2018-10-24 16:35:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2546 states. [2018-10-24 16:35:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3538 transitions. [2018-10-24 16:35:35,641 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3538 transitions. Word has length 105 [2018-10-24 16:35:35,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:35,642 INFO L481 AbstractCegarLoop]: Abstraction has 2546 states and 3538 transitions. [2018-10-24 16:35:35,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:35:35,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3538 transitions. [2018-10-24 16:35:35,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-24 16:35:35,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:35,663 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:35:35,664 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:35,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:35,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1099166109, now seen corresponding path program 1 times [2018-10-24 16:35:35,664 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:35,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:35,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:35,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:35,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 16:35:36,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:35:36,249 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 16:35:36,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:36,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:35:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:36,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:35:36,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:35:36,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:35:36,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:35:36,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:35:36,558 INFO L87 Difference]: Start difference. First operand 2546 states and 3538 transitions. Second operand 4 states. [2018-10-24 16:35:43,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:43,528 INFO L93 Difference]: Finished difference Result 9960 states and 13879 transitions. [2018-10-24 16:35:43,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:35:43,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2018-10-24 16:35:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:43,563 INFO L225 Difference]: With dead ends: 9960 [2018-10-24 16:35:43,564 INFO L226 Difference]: Without dead ends: 7416 [2018-10-24 16:35:43,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 251 SyntacticMatches, 1 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 16:35:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7416 states. [2018-10-24 16:35:43,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7416 to 4347. [2018-10-24 16:35:43,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4347 states. [2018-10-24 16:35:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5745 transitions. [2018-10-24 16:35:43,671 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5745 transitions. Word has length 251 [2018-10-24 16:35:43,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:43,672 INFO L481 AbstractCegarLoop]: Abstraction has 4347 states and 5745 transitions. [2018-10-24 16:35:43,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:35:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5745 transitions. [2018-10-24 16:35:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-24 16:35:43,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:43,679 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:35:43,679 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:43,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:43,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1026009555, now seen corresponding path program 1 times [2018-10-24 16:35:43,680 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:43,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:43,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:43,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:43,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:44,377 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-24 16:35:44,750 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 16:35:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-24 16:35:45,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:35:45,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:35:45,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:35:45,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:35:45,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:35:45,127 INFO L87 Difference]: Start difference. First operand 4347 states and 5745 transitions. Second operand 5 states. [2018-10-24 16:35:50,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:50,588 INFO L93 Difference]: Finished difference Result 10494 states and 13456 transitions. [2018-10-24 16:35:50,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:35:50,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2018-10-24 16:35:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:50,614 INFO L225 Difference]: With dead ends: 10494 [2018-10-24 16:35:50,614 INFO L226 Difference]: Without dead ends: 6149 [2018-10-24 16:35:50,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:35:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2018-10-24 16:35:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 5848. [2018-10-24 16:35:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5848 states. [2018-10-24 16:35:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 7328 transitions. [2018-10-24 16:35:50,717 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 7328 transitions. Word has length 318 [2018-10-24 16:35:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:50,718 INFO L481 AbstractCegarLoop]: Abstraction has 5848 states and 7328 transitions. [2018-10-24 16:35:50,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:35:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 7328 transitions. [2018-10-24 16:35:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-24 16:35:50,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:50,728 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:35:50,728 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:50,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:50,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1682379131, now seen corresponding path program 1 times [2018-10-24 16:35:50,729 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:50,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:50,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:50,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:50,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:51,274 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:35:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 83 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:52,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:35:52,016 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 16:35:52,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:52,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:35:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:52,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:35:52,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-24 16:35:52,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:35:52,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:35:52,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:35:52,417 INFO L87 Difference]: Start difference. First operand 5848 states and 7328 transitions. Second operand 9 states. [2018-10-24 16:36:04,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:04,712 INFO L93 Difference]: Finished difference Result 13595 states and 17187 transitions. [2018-10-24 16:36:04,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:36:04,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 392 [2018-10-24 16:36:04,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:04,745 INFO L225 Difference]: With dead ends: 13595 [2018-10-24 16:36:04,745 INFO L226 Difference]: Without dead ends: 7749 [2018-10-24 16:36:04,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 395 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:36:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7749 states. [2018-10-24 16:36:04,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7749 to 7350. [2018-10-24 16:36:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7350 states. [2018-10-24 16:36:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7350 states to 7350 states and 8791 transitions. [2018-10-24 16:36:04,877 INFO L78 Accepts]: Start accepts. Automaton has 7350 states and 8791 transitions. Word has length 392 [2018-10-24 16:36:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:04,878 INFO L481 AbstractCegarLoop]: Abstraction has 7350 states and 8791 transitions. [2018-10-24 16:36:04,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:36:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 7350 states and 8791 transitions. [2018-10-24 16:36:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-10-24 16:36:04,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:04,888 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:04,889 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:04,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:04,889 INFO L82 PathProgramCache]: Analyzing trace with hash 759146144, now seen corresponding path program 1 times [2018-10-24 16:36:04,890 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:04,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:04,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:04,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:04,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 16:36:05,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:05,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:36:05,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:36:05,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:36:05,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:36:05,505 INFO L87 Difference]: Start difference. First operand 7350 states and 8791 transitions. Second operand 4 states. [2018-10-24 16:36:11,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:11,369 INFO L93 Difference]: Finished difference Result 16198 states and 19538 transitions. [2018-10-24 16:36:11,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:36:11,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 411 [2018-10-24 16:36:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:11,398 INFO L225 Difference]: With dead ends: 16198 [2018-10-24 16:36:11,398 INFO L226 Difference]: Without dead ends: 8850 [2018-10-24 16:36:11,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:36:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8850 states. [2018-10-24 16:36:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8850 to 8847. [2018-10-24 16:36:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2018-10-24 16:36:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 10351 transitions. [2018-10-24 16:36:11,555 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 10351 transitions. Word has length 411 [2018-10-24 16:36:11,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:11,556 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 10351 transitions. [2018-10-24 16:36:11,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:36:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 10351 transitions. [2018-10-24 16:36:11,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-24 16:36:11,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:11,571 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:11,571 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:11,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:11,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1268327467, now seen corresponding path program 1 times [2018-10-24 16:36:11,572 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:11,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:11,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:11,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:11,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-10-24 16:36:11,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:11,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:36:11,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:36:11,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:36:11,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:36:11,999 INFO L87 Difference]: Start difference. First operand 8847 states and 10351 transitions. Second operand 3 states. [2018-10-24 16:36:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:15,319 INFO L93 Difference]: Finished difference Result 19491 states and 23162 transitions. [2018-10-24 16:36:15,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:36:15,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 506 [2018-10-24 16:36:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:15,341 INFO L225 Difference]: With dead ends: 19491 [2018-10-24 16:36:15,342 INFO L226 Difference]: Without dead ends: 10646 [2018-10-24 16:36:15,350 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 16:36:15,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10646 states. [2018-10-24 16:36:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10646 to 10646. [2018-10-24 16:36:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10646 states. [2018-10-24 16:36:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 12395 transitions. [2018-10-24 16:36:15,500 INFO L78 Accepts]: Start accepts. Automaton has 10646 states and 12395 transitions. Word has length 506 [2018-10-24 16:36:15,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:15,501 INFO L481 AbstractCegarLoop]: Abstraction has 10646 states and 12395 transitions. [2018-10-24 16:36:15,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:36:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 10646 states and 12395 transitions. [2018-10-24 16:36:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2018-10-24 16:36:15,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:15,529 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2018-10-24 16:36:15,529 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:15,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash 629788706, now seen corresponding path program 1 times [2018-10-24 16:36:15,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:15,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:15,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:15,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:15,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:16,376 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-24 16:36:16,741 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-24 16:36:17,242 WARN L179 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2018-10-24 16:36:17,873 WARN L179 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2018-10-24 16:36:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 610 proven. 4 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-10-24 16:36:18,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:36:18,593 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 16:36:18,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:18,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:36:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 575 proven. 39 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-10-24 16:36:19,909 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:36:19,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-24 16:36:19,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:36:19,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:36:19,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:36:19,912 INFO L87 Difference]: Start difference. First operand 10646 states and 12395 transitions. Second operand 9 states. [2018-10-24 16:36:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:32,778 INFO L93 Difference]: Finished difference Result 29259 states and 33742 transitions. [2018-10-24 16:36:32,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:36:32,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 598 [2018-10-24 16:36:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:32,800 INFO L225 Difference]: With dead ends: 29259 [2018-10-24 16:36:32,800 INFO L226 Difference]: Without dead ends: 11191 [2018-10-24 16:36:32,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 595 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-24 16:36:32,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11191 states. [2018-10-24 16:36:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11191 to 6687. [2018-10-24 16:36:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6687 states. [2018-10-24 16:36:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 7120 transitions. [2018-10-24 16:36:32,918 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 7120 transitions. Word has length 598 [2018-10-24 16:36:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:32,919 INFO L481 AbstractCegarLoop]: Abstraction has 6687 states and 7120 transitions. [2018-10-24 16:36:32,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:36:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 7120 transitions. [2018-10-24 16:36:32,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-10-24 16:36:32,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:32,928 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:36:32,928 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:32,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:32,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1761383920, now seen corresponding path program 1 times [2018-10-24 16:36:32,929 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:32,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:32,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:32,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:32,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2018-10-24 16:36:33,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:33,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:36:33,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:36:33,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:36:33,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:36:33,296 INFO L87 Difference]: Start difference. First operand 6687 states and 7120 transitions. Second operand 3 states. [2018-10-24 16:36:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:34,902 INFO L93 Difference]: Finished difference Result 13370 states and 14236 transitions. [2018-10-24 16:36:34,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:36:34,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 640 [2018-10-24 16:36:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:34,915 INFO L225 Difference]: With dead ends: 13370 [2018-10-24 16:36:34,915 INFO L226 Difference]: Without dead ends: 6685 [2018-10-24 16:36:34,922 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 16:36:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6685 states. [2018-10-24 16:36:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6685 to 6685. [2018-10-24 16:36:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6685 states. [2018-10-24 16:36:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6685 states to 6685 states and 7116 transitions. [2018-10-24 16:36:35,005 INFO L78 Accepts]: Start accepts. Automaton has 6685 states and 7116 transitions. Word has length 640 [2018-10-24 16:36:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:35,007 INFO L481 AbstractCegarLoop]: Abstraction has 6685 states and 7116 transitions. [2018-10-24 16:36:35,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:36:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6685 states and 7116 transitions. [2018-10-24 16:36:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2018-10-24 16:36:35,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:35,016 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:36:35,017 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:35,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:35,017 INFO L82 PathProgramCache]: Analyzing trace with hash 633160268, now seen corresponding path program 1 times [2018-10-24 16:36:35,017 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:35,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:35,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:35,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:35,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:35,629 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 16:36:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-10-24 16:36:36,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:36,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:36:36,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:36:36,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:36:36,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:36:36,186 INFO L87 Difference]: Start difference. First operand 6685 states and 7116 transitions. Second operand 4 states. [2018-10-24 16:36:38,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:38,976 INFO L93 Difference]: Finished difference Result 18479 states and 19740 transitions. [2018-10-24 16:36:38,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:36:38,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 675 [2018-10-24 16:36:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:38,994 INFO L225 Difference]: With dead ends: 18479 [2018-10-24 16:36:38,994 INFO L226 Difference]: Without dead ends: 11796 [2018-10-24 16:36:39,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:36:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11796 states. [2018-10-24 16:36:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11796 to 8786. [2018-10-24 16:36:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8786 states. [2018-10-24 16:36:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8786 states to 8786 states and 9334 transitions. [2018-10-24 16:36:39,132 INFO L78 Accepts]: Start accepts. Automaton has 8786 states and 9334 transitions. Word has length 675 [2018-10-24 16:36:39,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:39,133 INFO L481 AbstractCegarLoop]: Abstraction has 8786 states and 9334 transitions. [2018-10-24 16:36:39,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:36:39,134 INFO L276 IsEmpty]: Start isEmpty. Operand 8786 states and 9334 transitions. [2018-10-24 16:36:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-10-24 16:36:39,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:39,146 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:36:39,147 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:39,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:39,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1603711671, now seen corresponding path program 1 times [2018-10-24 16:36:39,147 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:39,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:39,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:39,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:39,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:39,823 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 16:36:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2018-10-24 16:36:40,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:40,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:36:40,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:36:40,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:36:40,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:36:40,096 INFO L87 Difference]: Start difference. First operand 8786 states and 9334 transitions. Second operand 5 states. [2018-10-24 16:36:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:44,160 INFO L93 Difference]: Finished difference Result 21483 states and 22912 transitions. [2018-10-24 16:36:44,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:36:44,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 700 [2018-10-24 16:36:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:44,177 INFO L225 Difference]: With dead ends: 21483 [2018-10-24 16:36:44,177 INFO L226 Difference]: Without dead ends: 12091 [2018-10-24 16:36:44,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:36:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12091 states. [2018-10-24 16:36:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12091 to 9680. [2018-10-24 16:36:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9680 states. [2018-10-24 16:36:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9680 states to 9680 states and 10180 transitions. [2018-10-24 16:36:44,450 INFO L78 Accepts]: Start accepts. Automaton has 9680 states and 10180 transitions. Word has length 700 [2018-10-24 16:36:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:44,451 INFO L481 AbstractCegarLoop]: Abstraction has 9680 states and 10180 transitions. [2018-10-24 16:36:44,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:36:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 9680 states and 10180 transitions. [2018-10-24 16:36:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-10-24 16:36:44,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:44,463 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:36:44,463 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:44,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:44,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2057296553, now seen corresponding path program 1 times [2018-10-24 16:36:44,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:44,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:44,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:44,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:44,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-10-24 16:36:45,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:45,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:36:45,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:36:45,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:36:45,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:36:45,295 INFO L87 Difference]: Start difference. First operand 9680 states and 10180 transitions. Second operand 5 states. [2018-10-24 16:36:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:48,325 INFO L93 Difference]: Finished difference Result 22668 states and 23835 transitions. [2018-10-24 16:36:48,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:36:48,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 712 [2018-10-24 16:36:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:48,337 INFO L225 Difference]: With dead ends: 22668 [2018-10-24 16:36:48,337 INFO L226 Difference]: Without dead ends: 12990 [2018-10-24 16:36:48,345 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 [2018-10-24 16:36:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-24 16:36:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8780. [2018-10-24 16:36:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8780 states. [2018-10-24 16:36:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8780 states to 8780 states and 9196 transitions. [2018-10-24 16:36:48,443 INFO L78 Accepts]: Start accepts. Automaton has 8780 states and 9196 transitions. Word has length 712 [2018-10-24 16:36:48,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:48,443 INFO L481 AbstractCegarLoop]: Abstraction has 8780 states and 9196 transitions. [2018-10-24 16:36:48,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:36:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 8780 states and 9196 transitions. [2018-10-24 16:36:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2018-10-24 16:36:48,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:48,456 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:36:48,456 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:48,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:48,456 INFO L82 PathProgramCache]: Analyzing trace with hash 115147648, now seen corresponding path program 1 times [2018-10-24 16:36:48,457 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:48,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:48,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:48,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:48,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 37 proven. 543 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:36:50,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:36:50,054 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 16:36:50,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:50,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:37:07,142 WARN L179 SmtUtils]: Spent 16.75 s on a formula simplification. DAG size of input: 118 DAG size of output: 36 [2018-10-24 16:37:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2018-10-24 16:37:07,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:37:07,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:37:07,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:37:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:37:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:37:07,864 INFO L87 Difference]: Start difference. First operand 8780 states and 9196 transitions. Second operand 7 states. [2018-10-24 16:37:14,723 WARN L179 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2018-10-24 16:37:19,434 WARN L179 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2018-10-24 16:37:31,541 WARN L179 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 40 [2018-10-24 16:37:35,721 WARN L179 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 41 DAG size of output: 28 Received shutdown request... [2018-10-24 16:39:25,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:39:25,377 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:39:25,383 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:39:25,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:39:25 BoogieIcfgContainer [2018-10-24 16:39:25,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:39:25,385 INFO L168 Benchmark]: Toolchain (without parser) took 254726.95 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 467.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:39:25,387 INFO L168 Benchmark]: CDTParser took 0.25 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 16:39:25,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1273.16 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:39:25,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 415.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -889.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:39:25,391 INFO L168 Benchmark]: Boogie Preprocessor took 207.05 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: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:39:25,394 INFO L168 Benchmark]: RCFGBuilder took 6756.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 297.7 MB). Peak memory consumption was 297.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:39:25,395 INFO L168 Benchmark]: TraceAbstraction took 246069.07 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.4 GB in the end (delta: -1.5 GB). Peak memory consumption was 141.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:39:25,408 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1273.16 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 415.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -889.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 207.05 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: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6756.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 297.7 MB). Peak memory consumption was 297.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246069.07 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.4 GB in the end (delta: -1.5 GB). Peak memory consumption was 141.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (8780states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (8085 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 245.9s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 211.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3311 SDtfs, 15648 SDslu, 2188 SDs, 0 SdLazy, 32635 SolverSat, 5353 SolverUnsat, 51 SolverUnknown, 0 SolverNotchecked, 185.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2090 GetRequests, 2025 SyntacticMatches, 13 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 37.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10646occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 18214 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 26.9s InterpolantComputationTime, 8118 NumberOfCodeBlocks, 8118 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 8101 ConstructedInterpolants, 37 QuantifiedInterpolants, 18920754 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2425 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 7492/8153 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown