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/Problem11_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:03:02,830 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:03:02,832 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:03:02,849 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:03:02,849 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:03:02,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:03:02,852 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:03:02,854 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:03:02,858 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:03:02,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:03:02,866 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:03:02,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:03:02,867 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:03:02,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:03:02,871 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:03:02,873 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:03:02,874 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:03:02,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:03:02,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:03:02,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:03:02,882 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:03:02,883 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:03:02,885 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:03:02,901 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 21:03:02,932 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:03:02,932 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:03:02,933 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:03:02,933 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:03:02,934 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:03:02,934 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:03:02,934 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:03:02,934 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:03:02,934 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:03:02,935 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:03:02,935 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:03:02,935 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:03:02,935 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:03:02,935 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:03:02,936 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:03:02,936 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:03:02,936 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:03:02,936 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:03:02,936 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:03:02,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:03:02,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:03:02,937 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:03:02,937 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:03:02,937 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:03:02,938 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:03:02,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:03:02,938 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:03:02,938 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:03:02,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:03:03,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:03:03,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:03:03,020 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:03:03,020 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:03:03,021 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-11-06 21:03:03,083 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2db261b/b951428f0efa4d27af3b35e3c9759f97/FLAG15fda1e97 [2018-11-06 21:03:03,734 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:03:03,735 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-11-06 21:03:03,756 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2db261b/b951428f0efa4d27af3b35e3c9759f97/FLAG15fda1e97 [2018-11-06 21:03:03,777 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c2db261b/b951428f0efa4d27af3b35e3c9759f97 [2018-11-06 21:03:03,789 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:03:03,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:03:03,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:03:03,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:03:03,797 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:03:03,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:03:03" (1/1) ... [2018-11-06 21:03:03,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16027c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:03, skipping insertion in model container [2018-11-06 21:03:03,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:03:03" (1/1) ... [2018-11-06 21:03:03,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:03:03,901 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:03:04,505 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:03:04,510 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:03:04,723 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:03:04,744 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:03:04,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04 WrapperNode [2018-11-06 21:03:04,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:03:04,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:03:04,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:03:04,747 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:03:04,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (1/1) ... [2018-11-06 21:03:04,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (1/1) ... [2018-11-06 21:03:05,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:03:05,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:03:05,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:03:05,035 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:03:05,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (1/1) ... [2018-11-06 21:03:05,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (1/1) ... [2018-11-06 21:03:05,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (1/1) ... [2018-11-06 21:03:05,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (1/1) ... [2018-11-06 21:03:05,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (1/1) ... [2018-11-06 21:03:05,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (1/1) ... [2018-11-06 21:03:05,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (1/1) ... [2018-11-06 21:03:05,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:03:05,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:03:05,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:03:05,160 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:03:05,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (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 21:03:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:03:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:03:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:03:10,082 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:03:10,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:03:10 BoogieIcfgContainer [2018-11-06 21:03:10,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:03:10,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:03:10,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:03:10,088 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:03:10,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:03:03" (1/3) ... [2018-11-06 21:03:10,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b68ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:03:10, skipping insertion in model container [2018-11-06 21:03:10,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:04" (2/3) ... [2018-11-06 21:03:10,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b68ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:03:10, skipping insertion in model container [2018-11-06 21:03:10,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:03:10" (3/3) ... [2018-11-06 21:03:10,092 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label22_true-unreach-call.c [2018-11-06 21:03:10,102 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:03:10,111 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:03:10,128 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:03:10,162 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:03:10,162 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:03:10,162 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:03:10,163 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:03:10,163 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:03:10,163 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:03:10,164 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:03:10,164 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:03:10,164 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:03:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-11-06 21:03:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-06 21:03:10,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:10,205 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] [2018-11-06 21:03:10,207 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:10,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:10,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1860758514, now seen corresponding path program 1 times [2018-11-06 21:03:10,219 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:10,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:10,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:10,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:10,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:10,713 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 21:03:10,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:10,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:03:10,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:10,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:10,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:10,740 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-11-06 21:03:13,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:13,723 INFO L93 Difference]: Finished difference Result 958 states and 1725 transitions. [2018-11-06 21:03:13,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:13,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-11-06 21:03:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:13,754 INFO L225 Difference]: With dead ends: 958 [2018-11-06 21:03:13,755 INFO L226 Difference]: Without dead ends: 667 [2018-11-06 21:03:13,760 INFO L604 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 [2018-11-06 21:03:13,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-11-06 21:03:13,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-11-06 21:03:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-11-06 21:03:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 983 transitions. [2018-11-06 21:03:13,858 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 983 transitions. Word has length 56 [2018-11-06 21:03:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:13,859 INFO L480 AbstractCegarLoop]: Abstraction has 667 states and 983 transitions. [2018-11-06 21:03:13,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 983 transitions. [2018-11-06 21:03:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-06 21:03:13,866 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:13,866 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, 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 21:03:13,867 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:13,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:13,867 INFO L82 PathProgramCache]: Analyzing trace with hash 414757932, now seen corresponding path program 1 times [2018-11-06 21:03:13,868 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:13,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:13,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:13,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:13,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:03:14,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:14,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:03:14,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:14,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:14,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:14,144 INFO L87 Difference]: Start difference. First operand 667 states and 983 transitions. Second operand 4 states. [2018-11-06 21:03:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:19,169 INFO L93 Difference]: Finished difference Result 2463 states and 3710 transitions. [2018-11-06 21:03:19,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:19,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-11-06 21:03:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:19,181 INFO L225 Difference]: With dead ends: 2463 [2018-11-06 21:03:19,182 INFO L226 Difference]: Without dead ends: 1798 [2018-11-06 21:03:19,187 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:03:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2018-11-06 21:03:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1595. [2018-11-06 21:03:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2018-11-06 21:03:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2260 transitions. [2018-11-06 21:03:19,243 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2260 transitions. Word has length 126 [2018-11-06 21:03:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:19,244 INFO L480 AbstractCegarLoop]: Abstraction has 1595 states and 2260 transitions. [2018-11-06 21:03:19,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2260 transitions. [2018-11-06 21:03:19,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-06 21:03:19,249 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:19,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:19,250 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:19,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:19,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1862992232, now seen corresponding path program 1 times [2018-11-06 21:03:19,250 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:19,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:19,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:19,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:19,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:03:19,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:19,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:03:19,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:19,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:19,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:19,537 INFO L87 Difference]: Start difference. First operand 1595 states and 2260 transitions. Second operand 4 states. [2018-11-06 21:03:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:22,830 INFO L93 Difference]: Finished difference Result 6177 states and 8809 transitions. [2018-11-06 21:03:22,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:22,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-11-06 21:03:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:22,855 INFO L225 Difference]: With dead ends: 6177 [2018-11-06 21:03:22,855 INFO L226 Difference]: Without dead ends: 4584 [2018-11-06 21:03:22,859 INFO L604 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 [2018-11-06 21:03:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4584 states. [2018-11-06 21:03:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4584 to 4578. [2018-11-06 21:03:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4578 states. [2018-11-06 21:03:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 5909 transitions. [2018-11-06 21:03:22,953 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 5909 transitions. Word has length 139 [2018-11-06 21:03:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:22,954 INFO L480 AbstractCegarLoop]: Abstraction has 4578 states and 5909 transitions. [2018-11-06 21:03:22,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 5909 transitions. [2018-11-06 21:03:22,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-06 21:03:22,962 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:22,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:22,963 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:22,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:22,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1672306407, now seen corresponding path program 1 times [2018-11-06 21:03:22,963 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:22,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:22,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:22,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:22,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:03:23,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:23,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:03:23,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:03:23,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:03:23,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:03:23,450 INFO L87 Difference]: Start difference. First operand 4578 states and 5909 transitions. Second operand 5 states. [2018-11-06 21:03:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:29,182 INFO L93 Difference]: Finished difference Result 16425 states and 21952 transitions. [2018-11-06 21:03:29,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:03:29,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2018-11-06 21:03:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:29,250 INFO L225 Difference]: With dead ends: 16425 [2018-11-06 21:03:29,250 INFO L226 Difference]: Without dead ends: 11849 [2018-11-06 21:03:29,258 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:03:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11849 states. [2018-11-06 21:03:29,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11849 to 10331. [2018-11-06 21:03:29,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10331 states. [2018-11-06 21:03:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10331 states to 10331 states and 13266 transitions. [2018-11-06 21:03:29,489 INFO L78 Accepts]: Start accepts. Automaton has 10331 states and 13266 transitions. Word has length 184 [2018-11-06 21:03:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:29,490 INFO L480 AbstractCegarLoop]: Abstraction has 10331 states and 13266 transitions. [2018-11-06 21:03:29,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:03:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 10331 states and 13266 transitions. [2018-11-06 21:03:29,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-06 21:03:29,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:29,507 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, 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] [2018-11-06 21:03:29,507 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:29,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:29,507 INFO L82 PathProgramCache]: Analyzing trace with hash 89924629, now seen corresponding path program 1 times [2018-11-06 21:03:29,507 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:29,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:29,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:29,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:29,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:29,962 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-11-06 21:03:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-06 21:03:30,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:30,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:03:30,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:30,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:30,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:30,010 INFO L87 Difference]: Start difference. First operand 10331 states and 13266 transitions. Second operand 4 states. [2018-11-06 21:03:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:32,056 INFO L93 Difference]: Finished difference Result 27150 states and 35049 transitions. [2018-11-06 21:03:32,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:32,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-11-06 21:03:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:32,121 INFO L225 Difference]: With dead ends: 27150 [2018-11-06 21:03:32,122 INFO L226 Difference]: Without dead ends: 13641 [2018-11-06 21:03:32,144 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13641 states. [2018-11-06 21:03:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13641 to 12517. [2018-11-06 21:03:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12517 states. [2018-11-06 21:03:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 15474 transitions. [2018-11-06 21:03:32,375 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 15474 transitions. Word has length 247 [2018-11-06 21:03:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:32,375 INFO L480 AbstractCegarLoop]: Abstraction has 12517 states and 15474 transitions. [2018-11-06 21:03:32,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 15474 transitions. [2018-11-06 21:03:32,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-11-06 21:03:32,388 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:32,389 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, 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] [2018-11-06 21:03:32,389 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:32,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1289748365, now seen corresponding path program 1 times [2018-11-06 21:03:32,389 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:32,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:32,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:32,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:32,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-06 21:03:32,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:32,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:03:32,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:32,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:32,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:32,688 INFO L87 Difference]: Start difference. First operand 12517 states and 15474 transitions. Second operand 4 states. [2018-11-06 21:03:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:34,898 INFO L93 Difference]: Finished difference Result 31529 states and 39132 transitions. [2018-11-06 21:03:34,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:34,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2018-11-06 21:03:34,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:34,936 INFO L225 Difference]: With dead ends: 31529 [2018-11-06 21:03:34,936 INFO L226 Difference]: Without dead ends: 19199 [2018-11-06 21:03:34,951 INFO L604 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 [2018-11-06 21:03:34,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19199 states. [2018-11-06 21:03:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19199 to 18806. [2018-11-06 21:03:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18806 states. [2018-11-06 21:03:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18806 states to 18806 states and 22391 transitions. [2018-11-06 21:03:35,207 INFO L78 Accepts]: Start accepts. Automaton has 18806 states and 22391 transitions. Word has length 298 [2018-11-06 21:03:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:35,207 INFO L480 AbstractCegarLoop]: Abstraction has 18806 states and 22391 transitions. [2018-11-06 21:03:35,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 18806 states and 22391 transitions. [2018-11-06 21:03:35,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-11-06 21:03:35,227 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:35,227 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:03:35,227 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:35,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:35,228 INFO L82 PathProgramCache]: Analyzing trace with hash -434510474, now seen corresponding path program 1 times [2018-11-06 21:03:35,228 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:35,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:35,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:35,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:35,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-11-06 21:03:35,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:03:35,710 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 21:03:35,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:35,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:03:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-06 21:03:36,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:03:36,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-11-06 21:03:36,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:36,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:36,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:36,012 INFO L87 Difference]: Start difference. First operand 18806 states and 22391 transitions. Second operand 4 states. [2018-11-06 21:03:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:39,580 INFO L93 Difference]: Finished difference Result 39292 states and 47011 transitions. [2018-11-06 21:03:39,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:39,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2018-11-06 21:03:39,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:39,625 INFO L225 Difference]: With dead ends: 39292 [2018-11-06 21:03:39,625 INFO L226 Difference]: Without dead ends: 22528 [2018-11-06 21:03:39,645 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 305 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 21:03:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22528 states. [2018-11-06 21:03:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22528 to 19170. [2018-11-06 21:03:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19170 states. [2018-11-06 21:03:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19170 states to 19170 states and 22445 transitions. [2018-11-06 21:03:40,153 INFO L78 Accepts]: Start accepts. Automaton has 19170 states and 22445 transitions. Word has length 304 [2018-11-06 21:03:40,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:40,154 INFO L480 AbstractCegarLoop]: Abstraction has 19170 states and 22445 transitions. [2018-11-06 21:03:40,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 19170 states and 22445 transitions. [2018-11-06 21:03:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-11-06 21:03:40,181 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:40,182 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:03:40,182 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:40,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash -463266020, now seen corresponding path program 1 times [2018-11-06 21:03:40,183 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:40,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:40,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:40,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:40,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:40,782 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-06 21:03:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 107 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:03:40,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:03:40,909 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 21:03:40,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:41,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:03:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 107 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:03:41,323 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:03:41,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-11-06 21:03:41,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:03:41,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:03:41,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:03:41,325 INFO L87 Difference]: Start difference. First operand 19170 states and 22445 transitions. Second operand 5 states. [2018-11-06 21:03:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:44,565 INFO L93 Difference]: Finished difference Result 45027 states and 52908 transitions. [2018-11-06 21:03:44,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 21:03:44,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2018-11-06 21:03:44,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:44,608 INFO L225 Difference]: With dead ends: 45027 [2018-11-06 21:03:44,609 INFO L226 Difference]: Without dead ends: 27899 [2018-11-06 21:03:44,629 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:03:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27899 states. [2018-11-06 21:03:44,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27899 to 19910. [2018-11-06 21:03:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19910 states. [2018-11-06 21:03:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19910 states to 19910 states and 23330 transitions. [2018-11-06 21:03:44,946 INFO L78 Accepts]: Start accepts. Automaton has 19910 states and 23330 transitions. Word has length 360 [2018-11-06 21:03:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:44,947 INFO L480 AbstractCegarLoop]: Abstraction has 19910 states and 23330 transitions. [2018-11-06 21:03:44,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:03:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19910 states and 23330 transitions. [2018-11-06 21:03:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-11-06 21:03:44,987 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:44,987 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:44,988 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:44,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:44,988 INFO L82 PathProgramCache]: Analyzing trace with hash 346379941, now seen corresponding path program 1 times [2018-11-06 21:03:44,988 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:44,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:44,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:44,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:44,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-06 21:03:45,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:45,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 21:03:45,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:03:45,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:03:45,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:03:45,687 INFO L87 Difference]: Start difference. First operand 19910 states and 23330 transitions. Second operand 3 states. [2018-11-06 21:03:46,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:46,659 INFO L93 Difference]: Finished difference Result 37963 states and 44540 transitions. [2018-11-06 21:03:46,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:03:46,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 426 [2018-11-06 21:03:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:46,682 INFO L225 Difference]: With dead ends: 37963 [2018-11-06 21:03:46,683 INFO L226 Difference]: Without dead ends: 19539 [2018-11-06 21:03:46,695 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:03:46,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19539 states. [2018-11-06 21:03:46,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19539 to 19539. [2018-11-06 21:03:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19539 states. [2018-11-06 21:03:46,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19539 states to 19539 states and 22547 transitions. [2018-11-06 21:03:46,929 INFO L78 Accepts]: Start accepts. Automaton has 19539 states and 22547 transitions. Word has length 426 [2018-11-06 21:03:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:46,930 INFO L480 AbstractCegarLoop]: Abstraction has 19539 states and 22547 transitions. [2018-11-06 21:03:46,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:03:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand 19539 states and 22547 transitions. [2018-11-06 21:03:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-11-06 21:03:46,982 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:46,983 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:46,983 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:46,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:46,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1151368560, now seen corresponding path program 1 times [2018-11-06 21:03:46,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:46,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:46,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:46,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:46,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:47,652 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-11-06 21:03:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2018-11-06 21:03:47,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:47,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:03:47,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:47,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:47,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:47,827 INFO L87 Difference]: Start difference. First operand 19539 states and 22547 transitions. Second operand 4 states. [2018-11-06 21:03:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:49,579 INFO L93 Difference]: Finished difference Result 39644 states and 45778 transitions. [2018-11-06 21:03:49,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:49,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 611 [2018-11-06 21:03:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:49,599 INFO L225 Difference]: With dead ends: 39644 [2018-11-06 21:03:49,599 INFO L226 Difference]: Without dead ends: 20477 [2018-11-06 21:03:49,611 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:49,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20477 states. [2018-11-06 21:03:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20477 to 19723. [2018-11-06 21:03:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19723 states. [2018-11-06 21:03:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19723 states to 19723 states and 22122 transitions. [2018-11-06 21:03:49,842 INFO L78 Accepts]: Start accepts. Automaton has 19723 states and 22122 transitions. Word has length 611 [2018-11-06 21:03:49,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:49,843 INFO L480 AbstractCegarLoop]: Abstraction has 19723 states and 22122 transitions. [2018-11-06 21:03:49,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 19723 states and 22122 transitions. [2018-11-06 21:03:49,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2018-11-06 21:03:49,884 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:49,885 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:49,885 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:49,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:49,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1317709288, now seen corresponding path program 1 times [2018-11-06 21:03:49,886 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:49,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:49,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:49,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:49,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:50,550 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-06 21:03:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2018-11-06 21:03:50,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:50,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:03:50,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:03:50,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:03:50,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:03:50,814 INFO L87 Difference]: Start difference. First operand 19723 states and 22122 transitions. Second operand 5 states. [2018-11-06 21:03:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:53,212 INFO L93 Difference]: Finished difference Result 46113 states and 51776 transitions. [2018-11-06 21:03:53,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:03:53,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 754 [2018-11-06 21:03:53,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:53,244 INFO L225 Difference]: With dead ends: 46113 [2018-11-06 21:03:53,244 INFO L226 Difference]: Without dead ends: 26762 [2018-11-06 21:03:53,260 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:03:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26762 states. [2018-11-06 21:03:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26762 to 26204. [2018-11-06 21:03:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26204 states. [2018-11-06 21:03:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26204 states to 26204 states and 28557 transitions. [2018-11-06 21:03:53,717 INFO L78 Accepts]: Start accepts. Automaton has 26204 states and 28557 transitions. Word has length 754 [2018-11-06 21:03:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:53,718 INFO L480 AbstractCegarLoop]: Abstraction has 26204 states and 28557 transitions. [2018-11-06 21:03:53,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:03:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 26204 states and 28557 transitions. [2018-11-06 21:03:53,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2018-11-06 21:03:53,743 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:53,743 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-11-06 21:03:53,744 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:53,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:53,744 INFO L82 PathProgramCache]: Analyzing trace with hash -246020562, now seen corresponding path program 1 times [2018-11-06 21:03:53,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:53,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:53,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:53,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:53,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:54,297 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-11-06 21:03:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1997 backedges. 1102 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2018-11-06 21:03:54,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:54,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:03:54,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:54,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:54,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:54,857 INFO L87 Difference]: Start difference. First operand 26204 states and 28557 transitions. Second operand 4 states. [2018-11-06 21:03:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:56,572 INFO L93 Difference]: Finished difference Result 50935 states and 55546 transitions. [2018-11-06 21:03:56,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:56,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 828 [2018-11-06 21:03:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:56,601 INFO L225 Difference]: With dead ends: 50935 [2018-11-06 21:03:56,602 INFO L226 Difference]: Without dead ends: 26774 [2018-11-06 21:03:56,616 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26774 states. [2018-11-06 21:03:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26774 to 25834. [2018-11-06 21:03:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25834 states. [2018-11-06 21:03:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25834 states to 25834 states and 28118 transitions. [2018-11-06 21:03:57,255 INFO L78 Accepts]: Start accepts. Automaton has 25834 states and 28118 transitions. Word has length 828 [2018-11-06 21:03:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:57,256 INFO L480 AbstractCegarLoop]: Abstraction has 25834 states and 28118 transitions. [2018-11-06 21:03:57,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 25834 states and 28118 transitions. [2018-11-06 21:03:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2018-11-06 21:03:57,284 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:57,284 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2018-11-06 21:03:57,284 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:57,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:57,285 INFO L82 PathProgramCache]: Analyzing trace with hash 39384976, now seen corresponding path program 1 times [2018-11-06 21:03:57,285 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:57,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:57,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:57,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:57,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2023 backedges. 1128 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2018-11-06 21:03:58,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:58,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:03:58,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:58,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:58,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:58,203 INFO L87 Difference]: Start difference. First operand 25834 states and 28118 transitions. Second operand 4 states. [2018-11-06 21:03:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:59,559 INFO L93 Difference]: Finished difference Result 50188 states and 54656 transitions. [2018-11-06 21:03:59,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:59,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 844 [2018-11-06 21:03:59,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:59,582 INFO L225 Difference]: With dead ends: 50188 [2018-11-06 21:03:59,582 INFO L226 Difference]: Without dead ends: 26211 [2018-11-06 21:03:59,595 INFO L604 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 [2018-11-06 21:03:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26211 states. [2018-11-06 21:03:59,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26211 to 25278. [2018-11-06 21:03:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25278 states. [2018-11-06 21:03:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25278 states to 25278 states and 27477 transitions. [2018-11-06 21:03:59,816 INFO L78 Accepts]: Start accepts. Automaton has 25278 states and 27477 transitions. Word has length 844 [2018-11-06 21:03:59,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:59,816 INFO L480 AbstractCegarLoop]: Abstraction has 25278 states and 27477 transitions. [2018-11-06 21:03:59,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 25278 states and 27477 transitions. [2018-11-06 21:03:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2018-11-06 21:03:59,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:59,841 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 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] [2018-11-06 21:03:59,842 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:59,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:59,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1654802679, now seen corresponding path program 1 times [2018-11-06 21:03:59,842 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:59,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:59,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:59,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:59,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:04:00,570 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 21:04:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1718 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2018-11-06 21:04:01,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:04:01,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:04:01,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:04:01,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:04:01,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:04:01,238 INFO L87 Difference]: Start difference. First operand 25278 states and 27477 transitions. Second operand 4 states. [2018-11-06 21:04:03,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:04:03,049 INFO L93 Difference]: Finished difference Result 49268 states and 53596 transitions. [2018-11-06 21:04:03,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:04:03,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 888 [2018-11-06 21:04:03,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:04:03,072 INFO L225 Difference]: With dead ends: 49268 [2018-11-06 21:04:03,072 INFO L226 Difference]: Without dead ends: 24177 [2018-11-06 21:04:03,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:04:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24177 states. [2018-11-06 21:04:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24177 to 21564. [2018-11-06 21:04:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21564 states. [2018-11-06 21:04:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21564 states to 21564 states and 23182 transitions. [2018-11-06 21:04:03,284 INFO L78 Accepts]: Start accepts. Automaton has 21564 states and 23182 transitions. Word has length 888 [2018-11-06 21:04:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:04:03,285 INFO L480 AbstractCegarLoop]: Abstraction has 21564 states and 23182 transitions. [2018-11-06 21:04:03,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:04:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 21564 states and 23182 transitions. [2018-11-06 21:04:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2018-11-06 21:04:03,300 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:04:03,301 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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, 1, 1, 1, 1, 1, 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 21:04:03,301 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:04:03,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:04:03,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1276705020, now seen corresponding path program 1 times [2018-11-06 21:04:03,301 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:04:03,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:04:03,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:03,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:04:03,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:04:03,951 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-11-06 21:04:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 1554 proven. 0 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2018-11-06 21:04:04,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:04:04,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:04:04,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:04:04,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:04:04,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:04:04,435 INFO L87 Difference]: Start difference. First operand 21564 states and 23182 transitions. Second operand 4 states. [2018-11-06 21:04:06,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:04:06,058 INFO L93 Difference]: Finished difference Result 43325 states and 46568 transitions. [2018-11-06 21:04:06,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:04:06,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 904 [2018-11-06 21:04:06,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:04:06,078 INFO L225 Difference]: With dead ends: 43325 [2018-11-06 21:04:06,078 INFO L226 Difference]: Without dead ends: 22874 [2018-11-06 21:04:06,088 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:04:06,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22874 states. [2018-11-06 21:04:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22874 to 21193. [2018-11-06 21:04:06,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21193 states. [2018-11-06 21:04:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21193 states to 21193 states and 22712 transitions. [2018-11-06 21:04:06,261 INFO L78 Accepts]: Start accepts. Automaton has 21193 states and 22712 transitions. Word has length 904 [2018-11-06 21:04:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:04:06,262 INFO L480 AbstractCegarLoop]: Abstraction has 21193 states and 22712 transitions. [2018-11-06 21:04:06,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:04:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 21193 states and 22712 transitions. [2018-11-06 21:04:06,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-11-06 21:04:06,278 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:04:06,279 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 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 21:04:06,279 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:04:06,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:04:06,279 INFO L82 PathProgramCache]: Analyzing trace with hash 740592222, now seen corresponding path program 1 times [2018-11-06 21:04:06,280 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:04:06,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:04:06,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:06,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:04:06,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:04:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 1433 proven. 220 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-11-06 21:04:07,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:04:07,518 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 21:04:07,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:04:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:04:07,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:04:13,368 WARN L179 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-11-06 21:04:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 1639 proven. 600 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-11-06 21:04:16,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:04:16,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2018-11-06 21:04:16,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:04:16,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:04:16,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:04:16,150 INFO L87 Difference]: Start difference. First operand 21193 states and 22712 transitions. Second operand 9 states. [2018-11-06 21:05:24,599 WARN L179 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2018-11-06 21:05:36,449 WARN L179 SmtUtils]: Spent 8.88 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2018-11-06 21:06:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:06:01,780 INFO L93 Difference]: Finished difference Result 47597 states and 50938 transitions. [2018-11-06 21:06:01,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 21:06:01,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 931 [2018-11-06 21:06:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:06:01,805 INFO L225 Difference]: With dead ends: 47597 [2018-11-06 21:06:01,805 INFO L226 Difference]: Without dead ends: 25286 [2018-11-06 21:06:01,818 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2018-11-06 21:06:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25286 states. [2018-11-06 21:06:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25286 to 22680. [2018-11-06 21:06:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22680 states. [2018-11-06 21:06:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22680 states to 22680 states and 24184 transitions. [2018-11-06 21:06:02,077 INFO L78 Accepts]: Start accepts. Automaton has 22680 states and 24184 transitions. Word has length 931 [2018-11-06 21:06:02,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:06:02,077 INFO L480 AbstractCegarLoop]: Abstraction has 22680 states and 24184 transitions. [2018-11-06 21:06:02,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:06:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 22680 states and 24184 transitions. [2018-11-06 21:06:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2018-11-06 21:06:02,103 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:06:02,104 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:06:02,105 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:06:02,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:06:02,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1946018418, now seen corresponding path program 1 times [2018-11-06 21:06:02,105 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:06:02,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:06:02,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:06:02,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:06:02,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:06:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:06:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1859 proven. 286 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2018-11-06 21:06:03,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:06:03,564 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 21:06:03,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:06:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:06:03,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:06:05,257 WARN L179 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2018-11-06 21:06:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1841 proven. 304 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2018-11-06 21:06:09,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:06:09,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-11-06 21:06:09,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 21:06:09,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 21:06:09,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-06 21:06:09,508 INFO L87 Difference]: Start difference. First operand 22680 states and 24184 transitions. Second operand 10 states. [2018-11-06 21:06:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:06:19,710 INFO L93 Difference]: Finished difference Result 49335 states and 52653 transitions. [2018-11-06 21:06:19,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 21:06:19,710 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1062 [2018-11-06 21:06:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:06:19,732 INFO L225 Difference]: With dead ends: 49335 [2018-11-06 21:06:19,732 INFO L226 Difference]: Without dead ends: 27954 [2018-11-06 21:06:19,744 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1041 SyntacticMatches, 17 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-11-06 21:06:19,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27954 states. [2018-11-06 21:06:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27954 to 24598. [2018-11-06 21:06:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24598 states. [2018-11-06 21:06:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24598 states to 24598 states and 26189 transitions. [2018-11-06 21:06:20,048 INFO L78 Accepts]: Start accepts. Automaton has 24598 states and 26189 transitions. Word has length 1062 [2018-11-06 21:06:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:06:20,049 INFO L480 AbstractCegarLoop]: Abstraction has 24598 states and 26189 transitions. [2018-11-06 21:06:20,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 21:06:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 24598 states and 26189 transitions. [2018-11-06 21:06:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2018-11-06 21:06:20,075 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:06:20,076 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-06 21:06:20,076 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:06:20,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:06:20,077 INFO L82 PathProgramCache]: Analyzing trace with hash 154286354, now seen corresponding path program 1 times [2018-11-06 21:06:20,077 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:06:20,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:06:20,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:06:20,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:06:20,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:06:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:06:22,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3582 backedges. 1874 proven. 1278 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2018-11-06 21:06:22,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:06:22,501 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 21:06:22,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:06:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:06:22,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:06:23,011 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 14 [2018-11-06 21:06:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3582 backedges. 2924 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2018-11-06 21:06:25,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:06:25,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2018-11-06 21:06:25,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:06:25,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:06:25,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:06:25,093 INFO L87 Difference]: Start difference. First operand 24598 states and 26189 transitions. Second operand 9 states. [2018-11-06 21:06:29,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:06:29,711 INFO L93 Difference]: Finished difference Result 61431 states and 65350 transitions. [2018-11-06 21:06:29,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 21:06:29,711 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1063 [2018-11-06 21:06:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:06:29,744 INFO L225 Difference]: With dead ends: 61431 [2018-11-06 21:06:29,745 INFO L226 Difference]: Without dead ends: 37762 [2018-11-06 21:06:29,762 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:06:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37762 states. [2018-11-06 21:06:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37762 to 28682. [2018-11-06 21:06:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28682 states. [2018-11-06 21:06:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28682 states to 28682 states and 30502 transitions. [2018-11-06 21:06:30,104 INFO L78 Accepts]: Start accepts. Automaton has 28682 states and 30502 transitions. Word has length 1063 [2018-11-06 21:06:30,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:06:30,105 INFO L480 AbstractCegarLoop]: Abstraction has 28682 states and 30502 transitions. [2018-11-06 21:06:30,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:06:30,105 INFO L276 IsEmpty]: Start isEmpty. Operand 28682 states and 30502 transitions. [2018-11-06 21:06:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2018-11-06 21:06:30,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:06:30,129 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:30,130 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:06:30,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:06:30,130 INFO L82 PathProgramCache]: Analyzing trace with hash 21190241, now seen corresponding path program 1 times [2018-11-06 21:06:30,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:06:30,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:06:30,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:06:30,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:06:30,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:06:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:06:30,993 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 21:06:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3759 backedges. 2058 proven. 233 refuted. 0 times theorem prover too weak. 1468 trivial. 0 not checked. [2018-11-06 21:06:32,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:06:32,668 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 21:06:32,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:06:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:06:32,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:06:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3759 backedges. 2954 proven. 260 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2018-11-06 21:06:35,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:06:35,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2018-11-06 21:06:35,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-06 21:06:35,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-06 21:06:35,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-11-06 21:06:35,105 INFO L87 Difference]: Start difference. First operand 28682 states and 30502 transitions. Second operand 14 states. [2018-11-06 21:06:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:06:49,671 INFO L93 Difference]: Finished difference Result 52489 states and 55752 transitions. [2018-11-06 21:06:49,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-06 21:06:49,672 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1149 [2018-11-06 21:06:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:06:49,672 INFO L225 Difference]: With dead ends: 52489 [2018-11-06 21:06:49,672 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 21:06:49,686 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1168 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=357, Invalid=975, Unknown=0, NotChecked=0, Total=1332 [2018-11-06 21:06:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 21:06:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 21:06:49,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 21:06:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 21:06:49,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1149 [2018-11-06 21:06:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:06:49,687 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 21:06:49,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-06 21:06:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 21:06:49,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 21:06:49,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 21:06:49,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,938 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,954 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:49,998 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,732 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,751 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,834 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,876 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,893 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,927 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,943 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:50,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,006 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,089 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,180 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,594 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,625 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,626 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,722 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,723 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,724 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,741 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,762 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,771 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,810 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,920 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,940 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,960 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:51,981 WARN L179 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 861 DAG size of output: 592 [2018-11-06 21:06:52,029 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,030 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,039 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,042 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,048 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,049 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,055 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,181 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,689 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,704 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,722 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,759 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,791 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,791 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,838 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,920 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,962 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,970 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:52,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,016 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,230 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,257 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,275 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,327 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,328 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,328 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,349 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,436 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:06:53,470 WARN L179 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 861 DAG size of output: 592 Received shutdown request... [2018-11-06 21:06:59,792 WARN L187 SmtUtils]: Removed 2 from assertion stack [2018-11-06 21:06:59,792 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-11-06 21:06:59,794 INFO L168 Benchmark]: Toolchain (without parser) took 236003.20 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-06 21:06:59,796 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. [2018-11-06 21:06:59,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 953.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:06:59,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 287.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -856.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-06 21:06:59,798 INFO L168 Benchmark]: Boogie Preprocessor took 125.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:06:59,798 INFO L168 Benchmark]: RCFGBuilder took 4923.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.6 MB). Peak memory consumption was 187.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:06:59,799 INFO L168 Benchmark]: TraceAbstraction took 229708.48 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-06 21:06:59,803 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 953.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 287.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -856.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4923.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.6 MB). Peak memory consumption was 187.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229708.48 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 171]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 551. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown