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/Problem19_label51_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:42:53,781 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:42:53,782 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:42:53,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:42:53,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:42:53,803 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:42:53,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:42:53,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:42:53,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:42:53,809 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:42:53,810 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:42:53,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:42:53,812 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:42:53,813 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:42:53,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:42:53,818 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:42:53,819 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:42:53,821 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:42:53,823 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:42:53,825 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:42:53,826 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:42:53,827 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:42:53,829 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:42:53,837 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:42:53,859 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:42:53,859 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:42:53,860 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:42:53,860 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:42:53,862 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:42:53,862 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:42:53,862 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:42:53,862 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:42:53,862 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:42:53,863 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:42:53,863 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:42:53,863 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:42:53,863 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:42:53,863 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:42:53,864 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:42:53,864 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:42:53,864 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:42:53,864 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:42:53,864 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:42:53,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:42:53,866 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:42:53,866 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:42:53,866 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:42:53,866 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:42:53,866 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:42:53,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:42:53,867 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:42:53,867 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:42:53,937 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:42:53,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:42:53,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:42:53,958 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:42:53,958 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:42:53,959 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label51_false-unreach-call.c [2018-10-23 18:42:54,024 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/81f23d950/5b299833db1e45f78d6ebe94e163fab9/FLAG03375f64c [2018-10-23 18:42:54,962 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:42:54,963 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label51_false-unreach-call.c [2018-10-23 18:42:55,011 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/81f23d950/5b299833db1e45f78d6ebe94e163fab9/FLAG03375f64c [2018-10-23 18:42:55,034 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/81f23d950/5b299833db1e45f78d6ebe94e163fab9 [2018-10-23 18:42:55,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:42:55,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:42:55,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:42:55,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:42:55,056 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:42:55,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:55" (1/1) ... [2018-10-23 18:42:55,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2992fe0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:55, skipping insertion in model container [2018-10-23 18:42:55,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:55" (1/1) ... [2018-10-23 18:42:55,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:42:55,315 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:42:57,210 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:42:57,216 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:42:58,275 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:42:58,329 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:42:58,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58 WrapperNode [2018-10-23 18:42:58,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:42:58,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:42:58,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:42:58,331 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:42:58,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... [2018-10-23 18:42:58,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... [2018-10-23 18:42:59,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:42:59,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:42:59,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:42:59,500 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:42:59,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... [2018-10-23 18:42:59,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... [2018-10-23 18:42:59,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... [2018-10-23 18:42:59,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... [2018-10-23 18:42:59,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... [2018-10-23 18:42:59,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... [2018-10-23 18:43:00,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... [2018-10-23 18:43:00,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:43:00,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:43:00,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:43:00,293 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:43:00,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:43:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:43:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:43:00,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:43:17,492 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:43:17,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:17 BoogieIcfgContainer [2018-10-23 18:43:17,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:43:17,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:43:17,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:43:17,498 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:43:17,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:55" (1/3) ... [2018-10-23 18:43:17,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50721c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:17, skipping insertion in model container [2018-10-23 18:43:17,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:58" (2/3) ... [2018-10-23 18:43:17,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50721c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:17, skipping insertion in model container [2018-10-23 18:43:17,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:17" (3/3) ... [2018-10-23 18:43:17,502 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label51_false-unreach-call.c [2018-10-23 18:43:17,511 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:43:17,521 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:43:17,538 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:43:17,585 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:43:17,586 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:43:17,586 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:43:17,586 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:43:17,587 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:43:17,587 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:43:17,587 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:43:17,587 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:43:17,587 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:43:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:43:17,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-23 18:43:17,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:17,649 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:43:17,651 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:17,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:17,658 INFO L82 PathProgramCache]: Analyzing trace with hash 670581594, now seen corresponding path program 1 times [2018-10-23 18:43:17,660 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:17,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:17,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:17,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:17,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:43:18,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:18,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:43:18,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:43:18,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:43:18,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:18,028 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 18:43:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:43:44,822 INFO L93 Difference]: Finished difference Result 6322 states and 12078 transitions. [2018-10-23 18:43:44,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:43:44,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-23 18:43:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:43:44,887 INFO L225 Difference]: With dead ends: 6322 [2018-10-23 18:43:44,888 INFO L226 Difference]: Without dead ends: 4566 [2018-10-23 18:43:44,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-10-23 18:43:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4562. [2018-10-23 18:43:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4562 states. [2018-10-23 18:43:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 7763 transitions. [2018-10-23 18:43:45,132 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 7763 transitions. Word has length 18 [2018-10-23 18:43:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:43:45,132 INFO L481 AbstractCegarLoop]: Abstraction has 4562 states and 7763 transitions. [2018-10-23 18:43:45,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:43:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 7763 transitions. [2018-10-23 18:43:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-23 18:43:45,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:45,137 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:43:45,137 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:45,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:45,139 INFO L82 PathProgramCache]: Analyzing trace with hash 586332882, now seen corresponding path program 1 times [2018-10-23 18:43:45,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:45,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:45,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:45,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:45,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:43:45,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:45,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:43:45,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:43:45,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:43:45,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:45,587 INFO L87 Difference]: Start difference. First operand 4562 states and 7763 transitions. Second operand 4 states. [2018-10-23 18:44:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:44:14,097 INFO L93 Difference]: Finished difference Result 17536 states and 30099 transitions. [2018-10-23 18:44:14,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:44:14,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2018-10-23 18:44:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:44:14,165 INFO L225 Difference]: With dead ends: 17536 [2018-10-23 18:44:14,165 INFO L226 Difference]: Without dead ends: 12976 [2018-10-23 18:44:14,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2018-10-23 18:44:14,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 8660. [2018-10-23 18:44:14,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8660 states. [2018-10-23 18:44:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14380 transitions. [2018-10-23 18:44:14,371 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14380 transitions. Word has length 88 [2018-10-23 18:44:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:44:14,372 INFO L481 AbstractCegarLoop]: Abstraction has 8660 states and 14380 transitions. [2018-10-23 18:44:14,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:44:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14380 transitions. [2018-10-23 18:44:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-23 18:44:14,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:44:14,376 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:44:14,377 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:44:14,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:44:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash 872305381, now seen corresponding path program 1 times [2018-10-23 18:44:14,377 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:44:14,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:44:14,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:14,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:44:14,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:44:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:44:14,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:44:14,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:44:14,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:44:14,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:44:14,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:14,739 INFO L87 Difference]: Start difference. First operand 8660 states and 14380 transitions. Second operand 4 states. [2018-10-23 18:44:35,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:44:35,270 INFO L93 Difference]: Finished difference Result 33813 states and 56473 transitions. [2018-10-23 18:44:35,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:44:35,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-23 18:44:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:44:35,348 INFO L225 Difference]: With dead ends: 33813 [2018-10-23 18:44:35,349 INFO L226 Difference]: Without dead ends: 25155 [2018-10-23 18:44:35,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25155 states. [2018-10-23 18:44:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25155 to 16865. [2018-10-23 18:44:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16865 states. [2018-10-23 18:44:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 24314 transitions. [2018-10-23 18:44:35,695 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 24314 transitions. Word has length 110 [2018-10-23 18:44:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:44:35,695 INFO L481 AbstractCegarLoop]: Abstraction has 16865 states and 24314 transitions. [2018-10-23 18:44:35,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:44:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 24314 transitions. [2018-10-23 18:44:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-23 18:44:35,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:44:35,702 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:44:35,703 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:44:35,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:44:35,703 INFO L82 PathProgramCache]: Analyzing trace with hash -453547303, now seen corresponding path program 1 times [2018-10-23 18:44:35,703 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:44:35,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:44:35,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:35,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:44:35,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:44:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:44:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:44:35,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:44:35,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:44:35,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:44:35,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:44:35,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:44:35,982 INFO L87 Difference]: Start difference. First operand 16865 states and 24314 transitions. Second operand 4 states. [2018-10-23 18:45:01,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:45:01,200 INFO L93 Difference]: Finished difference Result 65426 states and 94868 transitions. [2018-10-23 18:45:01,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:45:01,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-23 18:45:01,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:45:01,294 INFO L225 Difference]: With dead ends: 65426 [2018-10-23 18:45:01,295 INFO L226 Difference]: Without dead ends: 48563 [2018-10-23 18:45:01,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:45:01,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48563 states. [2018-10-23 18:45:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48563 to 48550. [2018-10-23 18:45:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48550 states. [2018-10-23 18:45:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48550 states to 48550 states and 63476 transitions. [2018-10-23 18:45:01,939 INFO L78 Accepts]: Start accepts. Automaton has 48550 states and 63476 transitions. Word has length 119 [2018-10-23 18:45:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:45:01,940 INFO L481 AbstractCegarLoop]: Abstraction has 48550 states and 63476 transitions. [2018-10-23 18:45:01,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:45:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 48550 states and 63476 transitions. [2018-10-23 18:45:01,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-23 18:45:01,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:45:01,943 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:45:01,944 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:45:01,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:45:01,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1820684780, now seen corresponding path program 1 times [2018-10-23 18:45:01,944 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:45:01,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:45:01,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:01,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:01,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:02,219 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 18:45:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-23 18:45:02,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:45:02,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:45:02,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:45:02,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:45:02,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:45:02,316 INFO L87 Difference]: Start difference. First operand 48550 states and 63476 transitions. Second operand 4 states. [2018-10-23 18:45:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:45:18,964 INFO L93 Difference]: Finished difference Result 112127 states and 144782 transitions. [2018-10-23 18:45:18,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:45:18,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-10-23 18:45:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:45:19,064 INFO L225 Difference]: With dead ends: 112127 [2018-10-23 18:45:19,065 INFO L226 Difference]: Without dead ends: 63579 [2018-10-23 18:45:19,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:45:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63579 states. [2018-10-23 18:45:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63579 to 63570. [2018-10-23 18:45:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63570 states. [2018-10-23 18:45:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63570 states to 63570 states and 77362 transitions. [2018-10-23 18:45:20,351 INFO L78 Accepts]: Start accepts. Automaton has 63570 states and 77362 transitions. Word has length 181 [2018-10-23 18:45:20,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:45:20,351 INFO L481 AbstractCegarLoop]: Abstraction has 63570 states and 77362 transitions. [2018-10-23 18:45:20,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:45:20,351 INFO L276 IsEmpty]: Start isEmpty. Operand 63570 states and 77362 transitions. [2018-10-23 18:45:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2018-10-23 18:45:20,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:45:20,375 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:45:20,375 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:45:20,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:45:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash -830257455, now seen corresponding path program 1 times [2018-10-23 18:45:20,378 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:45:20,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:45:20,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:20,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:20,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:21,448 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-23 18:45:22,057 WARN L179 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-10-23 18:45:22,674 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-10-23 18:45:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-23 18:45:23,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:45:23,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 18:45:23,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:45:23,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:45:23,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:45:23,816 INFO L87 Difference]: Start difference. First operand 63570 states and 77362 transitions. Second operand 8 states. [2018-10-23 18:45:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:45:49,111 INFO L93 Difference]: Finished difference Result 174483 states and 212371 transitions. [2018-10-23 18:45:49,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 18:45:49,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 754 [2018-10-23 18:45:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:45:49,264 INFO L225 Difference]: With dead ends: 174483 [2018-10-23 18:45:49,264 INFO L226 Difference]: Without dead ends: 110915 [2018-10-23 18:45:49,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-23 18:45:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110915 states. [2018-10-23 18:45:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110915 to 64936. [2018-10-23 18:45:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64936 states. [2018-10-23 18:45:50,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64936 states to 64936 states and 78734 transitions. [2018-10-23 18:45:50,409 INFO L78 Accepts]: Start accepts. Automaton has 64936 states and 78734 transitions. Word has length 754 [2018-10-23 18:45:50,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:45:50,410 INFO L481 AbstractCegarLoop]: Abstraction has 64936 states and 78734 transitions. [2018-10-23 18:45:50,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:45:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 64936 states and 78734 transitions. [2018-10-23 18:45:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2018-10-23 18:45:50,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:45:50,450 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:45:50,450 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:45:50,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:45:50,451 INFO L82 PathProgramCache]: Analyzing trace with hash -447355457, now seen corresponding path program 1 times [2018-10-23 18:45:50,451 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:45:50,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:45:50,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:50,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:45:50,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:45:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:45:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-10-23 18:45:51,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:45:51,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:45:51,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:45:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:45:51,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:45:51,554 INFO L87 Difference]: Start difference. First operand 64936 states and 78734 transitions. Second operand 5 states. [2018-10-23 18:46:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:46:22,536 INFO L93 Difference]: Finished difference Result 229770 states and 282836 transitions. [2018-10-23 18:46:22,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:46:22,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 873 [2018-10-23 18:46:22,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:46:22,708 INFO L225 Difference]: With dead ends: 229770 [2018-10-23 18:46:22,708 INFO L226 Difference]: Without dead ends: 166202 [2018-10-23 18:46:22,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:46:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166202 states. [2018-10-23 18:46:23,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166202 to 127786. [2018-10-23 18:46:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127786 states. [2018-10-23 18:46:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127786 states to 127786 states and 154610 transitions. [2018-10-23 18:46:24,077 INFO L78 Accepts]: Start accepts. Automaton has 127786 states and 154610 transitions. Word has length 873 [2018-10-23 18:46:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:46:24,078 INFO L481 AbstractCegarLoop]: Abstraction has 127786 states and 154610 transitions. [2018-10-23 18:46:24,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:46:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 127786 states and 154610 transitions. [2018-10-23 18:46:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-10-23 18:46:24,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:46:24,092 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:46:24,093 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:46:24,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:46:24,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2138505184, now seen corresponding path program 1 times [2018-10-23 18:46:24,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:46:24,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:46:24,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:24,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:46:24,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:46:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 18:46:26,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:46:26,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:46:26,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:46:26,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:46:26,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:46:26,114 INFO L87 Difference]: Start difference. First operand 127786 states and 154610 transitions. Second operand 4 states. [2018-10-23 18:46:45,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:46:45,009 INFO L93 Difference]: Finished difference Result 254197 states and 307839 transitions. [2018-10-23 18:46:45,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:46:45,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 931 [2018-10-23 18:46:45,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:46:45,155 INFO L225 Difference]: With dead ends: 254197 [2018-10-23 18:46:45,156 INFO L226 Difference]: Without dead ends: 127779 [2018-10-23 18:46:45,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:46:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127779 states. [2018-10-23 18:46:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127779 to 116844. [2018-10-23 18:46:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116844 states. [2018-10-23 18:46:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116844 states to 116844 states and 134228 transitions. [2018-10-23 18:46:46,345 INFO L78 Accepts]: Start accepts. Automaton has 116844 states and 134228 transitions. Word has length 931 [2018-10-23 18:46:46,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:46:46,347 INFO L481 AbstractCegarLoop]: Abstraction has 116844 states and 134228 transitions. [2018-10-23 18:46:46,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:46:46,347 INFO L276 IsEmpty]: Start isEmpty. Operand 116844 states and 134228 transitions. [2018-10-23 18:46:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2018-10-23 18:46:46,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:46:46,361 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:46:46,361 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:46:46,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:46:46,362 INFO L82 PathProgramCache]: Analyzing trace with hash -447044229, now seen corresponding path program 1 times [2018-10-23 18:46:46,362 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:46:46,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:46:46,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:46,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:46:46,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:46:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:46:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-10-23 18:46:48,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:46:48,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:46:48,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:46:48,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:46:48,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:46:48,322 INFO L87 Difference]: Start difference. First operand 116844 states and 134228 transitions. Second operand 3 states. Received shutdown request... [2018-10-23 18:46:49,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:46:49,885 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:46:49,890 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:46:49,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:46:49 BoogieIcfgContainer [2018-10-23 18:46:49,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:46:49,891 INFO L168 Benchmark]: Toolchain (without parser) took 234842.21 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -260.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 18:46:49,892 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:46:49,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3279.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:49,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 1168.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 877.1 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:49,895 INFO L168 Benchmark]: Boogie Preprocessor took 792.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 100.2 MB). Peak memory consumption was 100.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:49,896 INFO L168 Benchmark]: RCFGBuilder took 17201.41 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.0 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -367.3 MB). Peak memory consumption was 833.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:46:49,897 INFO L168 Benchmark]: TraceAbstraction took 212395.75 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.4 GB in the beginning and 1.7 GB in the end (delta: 766.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 18:46:49,902 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3279.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1168.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 877.1 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 792.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 100.2 MB). Peak memory consumption was 100.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17201.41 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.0 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -367.3 MB). Peak memory consumption was 833.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212395.75 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.4 GB in the beginning and 1.7 GB in the end (delta: 766.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 67). Cancelled while BasicCegarLoop was constructing difference of abstraction (116844states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (3540 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 212.3s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 195.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13479 SDtfs, 38417 SDslu, 8844 SDs, 0 SdLazy, 71432 SolverSat, 18980 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 167.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127786occurred 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: 6.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 107962 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 4031 NumberOfCodeBlocks, 4031 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4022 ConstructedInterpolants, 0 QuantifiedInterpolants, 9196229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 2348/2348 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown