java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:28:56,762 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:28:56,764 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:28:56,778 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:28:56,779 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:28:56,781 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:28:56,783 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:28:56,785 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:28:56,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:28:56,789 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:28:56,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:28:56,795 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:28:56,796 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:28:56,797 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:28:56,804 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:28:56,805 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:28:56,806 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:28:56,809 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:28:56,810 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:28:56,815 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:28:56,816 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:28:56,818 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:28:56,821 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:28:56,835 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 21:28:56,835 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 21:28:56,836 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 21:28:56,836 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 21:28:56,837 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:28:56,867 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:28:56,867 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:28:56,868 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:28:56,868 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:28:56,869 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:28:56,869 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:28:56,869 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:28:56,870 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:28:56,870 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:28:56,870 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:28:56,870 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:28:56,870 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:28:56,871 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:28:56,872 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:28:56,872 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:28:56,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:28:56,872 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:28:56,872 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:28:56,873 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:28:56,873 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:28:56,873 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:28:56,873 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:28:56,873 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:28:56,875 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:28:56,875 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:28:56,875 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:28:56,875 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:28:56,875 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:28:56,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:28:56,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:28:56,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:28:56,956 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:28:56,956 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:28:56,957 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-11-06 21:28:57,013 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de49f5d4/23fcbe0e570e47a5b2d56a8976aa0af3/FLAG8e00e9015 [2018-11-06 21:28:57,692 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:28:57,693 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-11-06 21:28:57,720 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de49f5d4/23fcbe0e570e47a5b2d56a8976aa0af3/FLAG8e00e9015 [2018-11-06 21:28:57,740 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9de49f5d4/23fcbe0e570e47a5b2d56a8976aa0af3 [2018-11-06 21:28:57,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:28:57,754 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:28:57,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:28:57,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:28:57,759 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:28:57,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:57" (1/1) ... [2018-11-06 21:28:57,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a15b74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:57, skipping insertion in model container [2018-11-06 21:28:57,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:57" (1/1) ... [2018-11-06 21:28:57,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:28:57,878 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:28:58,699 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:28:58,704 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:28:58,983 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:28:59,008 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:28:59,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59 WrapperNode [2018-11-06 21:28:59,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:28:59,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:28:59,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:28:59,011 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:28:59,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... [2018-11-06 21:28:59,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... [2018-11-06 21:28:59,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:28:59,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:28:59,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:28:59,431 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:28:59,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... [2018-11-06 21:28:59,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... [2018-11-06 21:28:59,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... [2018-11-06 21:28:59,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... [2018-11-06 21:28:59,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... [2018-11-06 21:28:59,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... [2018-11-06 21:28:59,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... [2018-11-06 21:28:59,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:28:59,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:28:59,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:28:59,685 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:28:59,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:28:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:28:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:28:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:29:07,478 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:29:07,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:29:07 BoogieIcfgContainer [2018-11-06 21:29:07,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:29:07,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:29:07,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:29:07,485 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:29:07,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:28:57" (1/3) ... [2018-11-06 21:29:07,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbf36c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:29:07, skipping insertion in model container [2018-11-06 21:29:07,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:59" (2/3) ... [2018-11-06 21:29:07,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbf36c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:29:07, skipping insertion in model container [2018-11-06 21:29:07,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:29:07" (3/3) ... [2018-11-06 21:29:07,489 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label12_true-unreach-call.c [2018-11-06 21:29:07,501 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:29:07,515 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:29:07,534 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:29:07,578 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:29:07,578 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:29:07,579 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:29:07,579 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:29:07,579 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:29:07,579 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:29:07,579 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:29:07,579 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:29:07,580 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:29:07,613 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-11-06 21:29:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-06 21:29:07,624 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:07,625 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:07,628 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:07,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:07,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1074201598, now seen corresponding path program 1 times [2018-11-06 21:29:07,638 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:07,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:07,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:07,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:07,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:08,184 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-06 21:29:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:08,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:08,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:29:08,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:29:08,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:29:08,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:08,234 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-11-06 21:29:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:14,913 INFO L93 Difference]: Finished difference Result 1474 states and 2723 transitions. [2018-11-06 21:29:14,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:14,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-06 21:29:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:14,941 INFO L225 Difference]: With dead ends: 1474 [2018-11-06 21:29:14,941 INFO L226 Difference]: Without dead ends: 1042 [2018-11-06 21:29:14,946 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2018-11-06 21:29:15,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1040. [2018-11-06 21:29:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2018-11-06 21:29:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1638 transitions. [2018-11-06 21:29:15,076 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1638 transitions. Word has length 60 [2018-11-06 21:29:15,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:15,077 INFO L480 AbstractCegarLoop]: Abstraction has 1040 states and 1638 transitions. [2018-11-06 21:29:15,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:29:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1638 transitions. [2018-11-06 21:29:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-06 21:29:15,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:15,085 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:15,085 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:15,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:15,085 INFO L82 PathProgramCache]: Analyzing trace with hash 694588061, now seen corresponding path program 1 times [2018-11-06 21:29:15,086 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:15,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:15,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:15,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:15,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:15,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:15,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:29:15,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:29:15,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:29:15,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:15,477 INFO L87 Difference]: Start difference. First operand 1040 states and 1638 transitions. Second operand 4 states. [2018-11-06 21:29:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:21,643 INFO L93 Difference]: Finished difference Result 3886 states and 6226 transitions. [2018-11-06 21:29:21,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:21,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-11-06 21:29:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:21,660 INFO L225 Difference]: With dead ends: 3886 [2018-11-06 21:29:21,661 INFO L226 Difference]: Without dead ends: 2848 [2018-11-06 21:29:21,666 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2018-11-06 21:29:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2846. [2018-11-06 21:29:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2846 states. [2018-11-06 21:29:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 4045 transitions. [2018-11-06 21:29:21,749 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 4045 transitions. Word has length 126 [2018-11-06 21:29:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:21,749 INFO L480 AbstractCegarLoop]: Abstraction has 2846 states and 4045 transitions. [2018-11-06 21:29:21,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:29:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 4045 transitions. [2018-11-06 21:29:21,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-06 21:29:21,768 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:21,769 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:21,769 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:21,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:21,771 INFO L82 PathProgramCache]: Analyzing trace with hash -441522345, now seen corresponding path program 1 times [2018-11-06 21:29:21,771 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:21,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:21,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:21,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:21,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 267 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-11-06 21:29:22,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:29:22,203 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:29:22,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:22,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:29:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-06 21:29:22,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:29:22,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:29:22,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:29:22,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:29:22,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:22,582 INFO L87 Difference]: Start difference. First operand 2846 states and 4045 transitions. Second operand 4 states. [2018-11-06 21:29:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:28,354 INFO L93 Difference]: Finished difference Result 10860 states and 15562 transitions. [2018-11-06 21:29:28,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:28,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2018-11-06 21:29:28,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:28,400 INFO L225 Difference]: With dead ends: 10860 [2018-11-06 21:29:28,400 INFO L226 Difference]: Without dead ends: 8016 [2018-11-06 21:29:28,406 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8016 states. [2018-11-06 21:29:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8016 to 4647. [2018-11-06 21:29:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4647 states. [2018-11-06 21:29:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 6280 transitions. [2018-11-06 21:29:28,514 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 6280 transitions. Word has length 305 [2018-11-06 21:29:28,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:28,515 INFO L480 AbstractCegarLoop]: Abstraction has 4647 states and 6280 transitions. [2018-11-06 21:29:28,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:29:28,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 6280 transitions. [2018-11-06 21:29:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-11-06 21:29:28,524 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:28,525 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:28,525 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:28,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:28,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1395770003, now seen corresponding path program 1 times [2018-11-06 21:29:28,526 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:28,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:28,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:28,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:28,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-06 21:29:29,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:29,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:29:29,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:29:29,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:29:29,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:29:29,160 INFO L87 Difference]: Start difference. First operand 4647 states and 6280 transitions. Second operand 5 states. [2018-11-06 21:29:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:33,228 INFO L93 Difference]: Finished difference Result 11094 states and 14546 transitions. [2018-11-06 21:29:33,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:33,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2018-11-06 21:29:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:33,260 INFO L225 Difference]: With dead ends: 11094 [2018-11-06 21:29:33,260 INFO L226 Difference]: Without dead ends: 6449 [2018-11-06 21:29:33,268 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:29:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6449 states. [2018-11-06 21:29:33,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6449 to 6148. [2018-11-06 21:29:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6148 states. [2018-11-06 21:29:33,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 7879 transitions. [2018-11-06 21:29:33,374 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 7879 transitions. Word has length 334 [2018-11-06 21:29:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:33,375 INFO L480 AbstractCegarLoop]: Abstraction has 6148 states and 7879 transitions. [2018-11-06 21:29:33,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:29:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 7879 transitions. [2018-11-06 21:29:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-11-06 21:29:33,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:33,386 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:33,386 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:33,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:33,386 INFO L82 PathProgramCache]: Analyzing trace with hash 834978299, now seen corresponding path program 1 times [2018-11-06 21:29:33,386 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:33,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:33,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:33,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:33,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:34,007 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:29:34,569 WARN L179 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-11-06 21:29:34,813 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-11-06 21:29:35,198 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-06 21:29:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 115 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:35,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:29:35,432 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:29:35,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:35,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:29:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:35,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:29:35,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2018-11-06 21:29:35,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 21:29:35,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 21:29:35,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:29:35,861 INFO L87 Difference]: Start difference. First operand 6148 states and 7879 transitions. Second operand 11 states. [2018-11-06 21:29:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:49,209 INFO L93 Difference]: Finished difference Result 19376 states and 25507 transitions. [2018-11-06 21:29:49,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-06 21:29:49,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 408 [2018-11-06 21:29:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:49,264 INFO L225 Difference]: With dead ends: 19376 [2018-11-06 21:29:49,264 INFO L226 Difference]: Without dead ends: 13230 [2018-11-06 21:29:49,272 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 417 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2018-11-06 21:29:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13230 states. [2018-11-06 21:29:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13230 to 12180. [2018-11-06 21:29:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12180 states. [2018-11-06 21:29:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 15424 transitions. [2018-11-06 21:29:49,510 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 15424 transitions. Word has length 408 [2018-11-06 21:29:49,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:49,511 INFO L480 AbstractCegarLoop]: Abstraction has 12180 states and 15424 transitions. [2018-11-06 21:29:49,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 21:29:49,512 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 15424 transitions. [2018-11-06 21:29:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-11-06 21:29:49,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:49,551 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:49,551 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:49,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:49,552 INFO L82 PathProgramCache]: Analyzing trace with hash 366757803, now seen corresponding path program 1 times [2018-11-06 21:29:49,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:49,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:49,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:49,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:49,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2018-11-06 21:29:50,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:50,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:29:50,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:29:50,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:29:50,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:29:50,338 INFO L87 Difference]: Start difference. First operand 12180 states and 15424 transitions. Second operand 3 states. [2018-11-06 21:29:52,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:52,726 INFO L93 Difference]: Finished difference Result 24656 states and 31221 transitions. [2018-11-06 21:29:52,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:29:52,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 715 [2018-11-06 21:29:52,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:52,754 INFO L225 Difference]: With dead ends: 24656 [2018-11-06 21:29:52,754 INFO L226 Difference]: Without dead ends: 12478 [2018-11-06 21:29:52,770 INFO L604 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 [2018-11-06 21:29:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12478 states. [2018-11-06 21:29:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12478 to 12178. [2018-11-06 21:29:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12178 states. [2018-11-06 21:29:52,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12178 states to 12178 states and 15420 transitions. [2018-11-06 21:29:52,960 INFO L78 Accepts]: Start accepts. Automaton has 12178 states and 15420 transitions. Word has length 715 [2018-11-06 21:29:52,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:52,961 INFO L480 AbstractCegarLoop]: Abstraction has 12178 states and 15420 transitions. [2018-11-06 21:29:52,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:29:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 12178 states and 15420 transitions. [2018-11-06 21:29:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2018-11-06 21:29:52,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:52,999 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, 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, 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, 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] [2018-11-06 21:29:52,999 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:52,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash 2142341883, now seen corresponding path program 1 times [2018-11-06 21:29:53,000 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:53,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:53,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:53,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:53,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:53,868 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-11-06 21:29:54,191 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-11-06 21:29:54,477 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2018-11-06 21:29:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 853 proven. 4 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2018-11-06 21:29:55,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:29:55,433 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:29:55,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:55,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:29:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2018-11-06 21:29:56,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:29:56,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 21:29:56,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:29:56,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:29:56,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:29:56,009 INFO L87 Difference]: Start difference. First operand 12178 states and 15420 transitions. Second operand 8 states. [2018-11-06 21:30:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:03,243 INFO L93 Difference]: Finished difference Result 28724 states and 35516 transitions. [2018-11-06 21:30:03,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 21:30:03,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 742 [2018-11-06 21:30:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:03,269 INFO L225 Difference]: With dead ends: 28724 [2018-11-06 21:30:03,269 INFO L226 Difference]: Without dead ends: 12473 [2018-11-06 21:30:03,284 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 745 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:30:03,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12473 states. [2018-11-06 21:30:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12473 to 12173. [2018-11-06 21:30:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12173 states. [2018-11-06 21:30:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12173 states to 12173 states and 13667 transitions. [2018-11-06 21:30:03,450 INFO L78 Accepts]: Start accepts. Automaton has 12173 states and 13667 transitions. Word has length 742 [2018-11-06 21:30:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:03,450 INFO L480 AbstractCegarLoop]: Abstraction has 12173 states and 13667 transitions. [2018-11-06 21:30:03,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:30:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 12173 states and 13667 transitions. [2018-11-06 21:30:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2018-11-06 21:30:03,491 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:03,492 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:30:03,492 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:03,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:03,493 INFO L82 PathProgramCache]: Analyzing trace with hash -170606789, now seen corresponding path program 1 times [2018-11-06 21:30:03,493 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:03,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:03,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:03,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:03,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 58 proven. 555 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-11-06 21:30:05,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:30:05,269 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:30:05,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:05,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:30:05,840 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 16 [2018-11-06 21:30:06,313 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 23 [2018-11-06 21:30:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 58 proven. 555 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-11-06 21:30:07,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:30:07,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-11-06 21:30:07,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:30:07,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:30:07,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:30:07,948 INFO L87 Difference]: Start difference. First operand 12173 states and 13667 transitions. Second operand 9 states. [2018-11-06 21:32:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:32:02,873 INFO L93 Difference]: Finished difference Result 53058 states and 59504 transitions. [2018-11-06 21:32:02,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-06 21:32:02,874 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 755 [2018-11-06 21:32:02,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:32:02,942 INFO L225 Difference]: With dead ends: 53058 [2018-11-06 21:32:02,942 INFO L226 Difference]: Without dead ends: 40887 [2018-11-06 21:32:02,961 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:32:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40887 states. [2018-11-06 21:32:03,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40887 to 27576. [2018-11-06 21:32:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27576 states. [2018-11-06 21:32:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27576 states to 27576 states and 31394 transitions. [2018-11-06 21:32:03,467 INFO L78 Accepts]: Start accepts. Automaton has 27576 states and 31394 transitions. Word has length 755 [2018-11-06 21:32:03,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:32:03,469 INFO L480 AbstractCegarLoop]: Abstraction has 27576 states and 31394 transitions. [2018-11-06 21:32:03,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:32:03,469 INFO L276 IsEmpty]: Start isEmpty. Operand 27576 states and 31394 transitions. [2018-11-06 21:32:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-11-06 21:32:03,509 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:32:03,510 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:32:03,510 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:32:03,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:32:03,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1189992754, now seen corresponding path program 1 times [2018-11-06 21:32:03,511 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:32:03,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:32:03,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:32:03,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:32:03,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:32:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:32:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-06 21:32:04,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:32:04,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:32:04,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:32:04,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:32:04,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:32:04,595 INFO L87 Difference]: Start difference. First operand 27576 states and 31394 transitions. Second operand 4 states. [2018-11-06 21:32:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:32:08,637 INFO L93 Difference]: Finished difference Result 54851 states and 62487 transitions. [2018-11-06 21:32:08,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:32:08,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 784 [2018-11-06 21:32:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:32:08,685 INFO L225 Difference]: With dead ends: 54851 [2018-11-06 21:32:08,686 INFO L226 Difference]: Without dead ends: 27577 [2018-11-06 21:32:08,706 INFO L604 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 [2018-11-06 21:32:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27577 states. [2018-11-06 21:32:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27577 to 27567. [2018-11-06 21:32:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27567 states. [2018-11-06 21:32:09,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27567 states to 27567 states and 30513 transitions. [2018-11-06 21:32:09,081 INFO L78 Accepts]: Start accepts. Automaton has 27567 states and 30513 transitions. Word has length 784 [2018-11-06 21:32:09,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:32:09,082 INFO L480 AbstractCegarLoop]: Abstraction has 27567 states and 30513 transitions. [2018-11-06 21:32:09,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:32:09,082 INFO L276 IsEmpty]: Start isEmpty. Operand 27567 states and 30513 transitions. [2018-11-06 21:32:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-11-06 21:32:09,110 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:32:09,110 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:32:09,111 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:32:09,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:32:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1223067402, now seen corresponding path program 1 times [2018-11-06 21:32:09,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:32:09,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:32:09,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:32:09,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:32:09,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:32:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:32:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 636 proven. 53 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-11-06 21:32:10,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:32:10,111 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:32:10,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:32:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:32:10,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:32:10,928 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 20 [2018-11-06 21:32:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 707 proven. 135 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-11-06 21:32:12,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:32:12,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-06 21:32:12,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:32:12,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:32:12,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:32:12,072 INFO L87 Difference]: Start difference. First operand 27567 states and 30513 transitions. Second operand 8 states. [2018-11-06 21:32:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:32:22,277 INFO L93 Difference]: Finished difference Result 96021 states and 106811 transitions. [2018-11-06 21:32:22,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 21:32:22,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 790 [2018-11-06 21:32:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:32:22,393 INFO L225 Difference]: With dead ends: 96021 [2018-11-06 21:32:22,393 INFO L226 Difference]: Without dead ends: 68756 [2018-11-06 21:32:22,423 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 793 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:32:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68756 states. [2018-11-06 21:32:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68756 to 46702. [2018-11-06 21:32:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46702 states. [2018-11-06 21:32:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46702 states to 46702 states and 50175 transitions. [2018-11-06 21:32:23,446 INFO L78 Accepts]: Start accepts. Automaton has 46702 states and 50175 transitions. Word has length 790 [2018-11-06 21:32:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:32:23,447 INFO L480 AbstractCegarLoop]: Abstraction has 46702 states and 50175 transitions. [2018-11-06 21:32:23,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:32:23,447 INFO L276 IsEmpty]: Start isEmpty. Operand 46702 states and 50175 transitions. [2018-11-06 21:32:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2018-11-06 21:32:23,472 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:32:23,473 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:32:23,473 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:32:23,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:32:23,474 INFO L82 PathProgramCache]: Analyzing trace with hash 360317674, now seen corresponding path program 1 times [2018-11-06 21:32:23,474 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:32:23,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:32:23,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:32:23,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:32:23,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:32:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:32:24,201 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-11-06 21:32:24,413 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 10 [2018-11-06 21:32:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 643 proven. 58 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-11-06 21:32:25,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:32:25,058 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:32:25,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:32:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:32:25,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:32:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-11-06 21:32:27,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:32:27,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-11-06 21:32:27,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 21:32:27,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 21:32:27,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:32:27,216 INFO L87 Difference]: Start difference. First operand 46702 states and 50175 transitions. Second operand 11 states. Received shutdown request... [2018-11-06 21:33:06,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-06 21:33:06,117 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:33:06,124 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:33:06,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:33:06 BoogieIcfgContainer [2018-11-06 21:33:06,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:33:06,125 INFO L168 Benchmark]: Toolchain (without parser) took 248372.58 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-06 21:33:06,126 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:33:06,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1254.22 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. [2018-11-06 21:33:06,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 420.35 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -840.6 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:33:06,129 INFO L168 Benchmark]: Boogie Preprocessor took 253.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2018-11-06 21:33:06,130 INFO L168 Benchmark]: RCFGBuilder took 7795.58 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 327.4 MB). Peak memory consumption was 327.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:33:06,130 INFO L168 Benchmark]: TraceAbstraction took 238643.60 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.8 GB in the end (delta: -992.1 MB). Peak memory consumption was 765.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:33:06,135 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1254.22 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 420.35 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -840.6 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 253.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7795.58 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 327.4 MB). Peak memory consumption was 327.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238643.60 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.8 GB in the end (delta: -992.1 MB). Peak memory consumption was 765.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 184]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 184). Cancelled while BasicCegarLoop was constructing difference of abstraction (46702states) and FLOYD_HOARE automaton (currently 28 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (112673 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 238.5s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 214.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2981 SDtfs, 24482 SDslu, 2869 SDs, 0 SdLazy, 46686 SolverSat, 10026 SolverUnsat, 73 SolverUnknown, 0 SolverNotchecked, 197.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3941 GetRequests, 3839 SyntacticMatches, 15 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46702occurred in iteration=10, 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: 2.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 40699 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 9623 NumberOfCodeBlocks, 9623 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 9606 ConstructedInterpolants, 710 QuantifiedInterpolants, 36553932 SizeOfPredicates, 4 NumberOfNonLiveVariables, 4515 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 10999/12439 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown