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/Problem19_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:00:00,492 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:00:00,499 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:00:00,515 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:00:00,515 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:00:00,516 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:00:00,518 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:00:00,520 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:00:00,521 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:00:00,522 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:00:00,523 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:00:00,523 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:00:00,524 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:00:00,525 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:00:00,526 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:00:00,527 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:00:00,528 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:00:00,530 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:00:00,532 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:00:00,534 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:00:00,537 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:00:00,538 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:00:00,544 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:00:00,544 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:00:00,544 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:00:00,545 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:00:00,546 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:00:00,547 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:00:00,548 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:00:00,549 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:00:00,549 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:00:00,549 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 22:00:00,552 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 22:00:00,567 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:00:00,567 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:00:00,568 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:00:00,568 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:00:00,568 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:00:00,569 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:00:00,569 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:00:00,569 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:00:00,569 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:00:00,569 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:00:00,570 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:00:00,570 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:00:00,570 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:00:00,570 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:00:00,570 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:00:00,571 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:00:00,571 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:00:00,571 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:00:00,571 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:00:00,571 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:00:00,572 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:00:00,572 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:00:00,572 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:00:00,572 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:00:00,572 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:00:00,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:00:00,573 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:00:00,573 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:00:00,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:00:00,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:00:00,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:00:00,662 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:00:00,663 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:00:00,663 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label30_true-unreach-call.c [2018-11-06 22:00:00,737 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e12b3c0a8/43b4951ed7b3433bb629253446affa3f/FLAG376557fd7 [2018-11-06 22:00:01,642 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:00:01,645 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label30_true-unreach-call.c [2018-11-06 22:00:01,695 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e12b3c0a8/43b4951ed7b3433bb629253446affa3f/FLAG376557fd7 [2018-11-06 22:00:01,713 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e12b3c0a8/43b4951ed7b3433bb629253446affa3f [2018-11-06 22:00:01,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:00:01,729 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:00:01,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:00:01,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:00:01,736 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:00:01,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:01" (1/1) ... [2018-11-06 22:00:01,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4070c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:01, skipping insertion in model container [2018-11-06 22:00:01,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:01" (1/1) ... [2018-11-06 22:00:01,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:00:02,012 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:00:03,935 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:00:03,940 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:00:04,992 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:00:05,054 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:00:05,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05 WrapperNode [2018-11-06 22:00:05,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:00:05,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:00:05,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:00:05,059 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:00:05,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2018-11-06 22:00:05,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2018-11-06 22:00:06,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:00:06,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:00:06,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:00:06,275 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:00:06,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2018-11-06 22:00:06,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2018-11-06 22:00:06,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2018-11-06 22:00:06,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2018-11-06 22:00:06,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2018-11-06 22:00:06,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2018-11-06 22:00:06,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (1/1) ... [2018-11-06 22:00:07,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:00:07,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:00:07,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:00:07,085 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:00:07,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (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 22:00:07,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 22:00:07,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:00:07,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:00:23,235 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:00:23,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:23 BoogieIcfgContainer [2018-11-06 22:00:23,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:00:23,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:00:23,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:00:23,243 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:00:23,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:01" (1/3) ... [2018-11-06 22:00:23,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54168b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:23, skipping insertion in model container [2018-11-06 22:00:23,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:05" (2/3) ... [2018-11-06 22:00:23,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54168b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:23, skipping insertion in model container [2018-11-06 22:00:23,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:23" (3/3) ... [2018-11-06 22:00:23,250 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label30_true-unreach-call.c [2018-11-06 22:00:23,260 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:00:23,274 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:00:23,290 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:00:23,348 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:00:23,348 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:00:23,349 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:00:23,349 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:00:23,349 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:00:23,349 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:00:23,349 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:00:23,349 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:00:23,350 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:00:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 22:00:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-06 22:00:23,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:23,424 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:00:23,427 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:23,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:23,434 INFO L82 PathProgramCache]: Analyzing trace with hash 55000978, now seen corresponding path program 1 times [2018-11-06 22:00:23,436 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:23,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:23,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:23,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:23,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:23,905 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 22:00:23,976 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 22:00:23,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:23,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:00:23,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:00:24,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:00:24,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:24,004 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 22:00:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:00:43,919 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-11-06 22:00:43,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:00:43,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-11-06 22:00:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:00:43,981 INFO L225 Difference]: With dead ends: 6326 [2018-11-06 22:00:43,981 INFO L226 Difference]: Without dead ends: 4570 [2018-11-06 22:00:43,991 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-11-06 22:00:44,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-11-06 22:00:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-11-06 22:00:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-11-06 22:00:44,201 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 49 [2018-11-06 22:00:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:00:44,202 INFO L480 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-11-06 22:00:44,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:00:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-11-06 22:00:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-06 22:00:44,212 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:44,213 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:00:44,213 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:44,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:44,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1633161244, now seen corresponding path program 1 times [2018-11-06 22:00:44,214 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:44,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:44,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:44,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:44,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:00:44,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:44,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:00:44,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:00:44,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:00:44,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:44,566 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-11-06 22:01:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:05,402 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-11-06 22:01:05,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:05,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-11-06 22:01:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:05,471 INFO L225 Difference]: With dead ends: 17552 [2018-11-06 22:01:05,471 INFO L226 Difference]: Without dead ends: 12990 [2018-11-06 22:01:05,480 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:05,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-11-06 22:01:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-11-06 22:01:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-11-06 22:01:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-11-06 22:01:05,682 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 153 [2018-11-06 22:01:05,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:05,682 INFO L480 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-11-06 22:01:05,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:01:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-11-06 22:01:05,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-06 22:01:05,686 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:05,686 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:01:05,687 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:05,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:05,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1048162706, now seen corresponding path program 1 times [2018-11-06 22:01:05,687 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:05,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:05,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:05,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:05,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:06,005 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-06 22:01:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:01:06,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:06,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:01:06,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:01:06,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:01:06,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:06,030 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-11-06 22:01:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:22,162 INFO L93 Difference]: Finished difference Result 33844 states and 54415 transitions. [2018-11-06 22:01:22,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:22,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-11-06 22:01:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:22,234 INFO L225 Difference]: With dead ends: 33844 [2018-11-06 22:01:22,235 INFO L226 Difference]: Without dead ends: 25180 [2018-11-06 22:01:22,248 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 22:01:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2018-11-06 22:01:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 25142. [2018-11-06 22:01:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25142 states. [2018-11-06 22:01:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 35892 transitions. [2018-11-06 22:01:22,686 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 35892 transitions. Word has length 157 [2018-11-06 22:01:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:22,687 INFO L480 AbstractCegarLoop]: Abstraction has 25142 states and 35892 transitions. [2018-11-06 22:01:22,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:01:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 35892 transitions. [2018-11-06 22:01:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-06 22:01:22,689 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:22,690 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:01:22,690 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:22,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:22,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1188813862, now seen corresponding path program 1 times [2018-11-06 22:01:22,690 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:22,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:22,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:22,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:22,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:01:23,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:23,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:01:23,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:01:23,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:01:23,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:23,080 INFO L87 Difference]: Start difference. First operand 25142 states and 35892 transitions. Second operand 4 states. [2018-11-06 22:01:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:38,244 INFO L93 Difference]: Finished difference Result 98404 states and 140796 transitions. [2018-11-06 22:01:38,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:38,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2018-11-06 22:01:38,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:38,395 INFO L225 Difference]: With dead ends: 98404 [2018-11-06 22:01:38,395 INFO L226 Difference]: Without dead ends: 73264 [2018-11-06 22:01:38,444 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 22:01:38,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73264 states. [2018-11-06 22:01:39,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73264 to 73244. [2018-11-06 22:01:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73244 states. [2018-11-06 22:01:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73244 states to 73244 states and 91793 transitions. [2018-11-06 22:01:39,451 INFO L78 Accepts]: Start accepts. Automaton has 73244 states and 91793 transitions. Word has length 180 [2018-11-06 22:01:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:39,452 INFO L480 AbstractCegarLoop]: Abstraction has 73244 states and 91793 transitions. [2018-11-06 22:01:39,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:01:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 73244 states and 91793 transitions. [2018-11-06 22:01:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-11-06 22:01:39,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:39,469 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:39,470 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:39,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:39,470 INFO L82 PathProgramCache]: Analyzing trace with hash 5728548, now seen corresponding path program 1 times [2018-11-06 22:01:39,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:39,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:39,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:39,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:39,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:40,046 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 22:01:40,608 WARN L179 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-11-06 22:01:41,226 WARN L179 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-11-06 22:01:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-06 22:01:42,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:42,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 22:01:42,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:01:42,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:01:42,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:01:42,068 INFO L87 Difference]: Start difference. First operand 73244 states and 91793 transitions. Second operand 7 states. [2018-11-06 22:02:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:15,816 INFO L93 Difference]: Finished difference Result 172454 states and 210825 transitions. [2018-11-06 22:02:15,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:02:15,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 504 [2018-11-06 22:02:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:15,928 INFO L225 Difference]: With dead ends: 172454 [2018-11-06 22:02:15,929 INFO L226 Difference]: Without dead ends: 99212 [2018-11-06 22:02:15,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:02:16,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99212 states. [2018-11-06 22:02:17,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99212 to 95108. [2018-11-06 22:02:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95108 states. [2018-11-06 22:02:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95108 states to 95108 states and 114314 transitions. [2018-11-06 22:02:17,143 INFO L78 Accepts]: Start accepts. Automaton has 95108 states and 114314 transitions. Word has length 504 [2018-11-06 22:02:17,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:17,143 INFO L480 AbstractCegarLoop]: Abstraction has 95108 states and 114314 transitions. [2018-11-06 22:02:17,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:02:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 95108 states and 114314 transitions. [2018-11-06 22:02:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-11-06 22:02:17,158 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:17,159 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:17,159 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:17,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:17,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1551641150, now seen corresponding path program 1 times [2018-11-06 22:02:17,160 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:17,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:17,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:17,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:17,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:17,622 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 22:02:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-11-06 22:02:17,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:17,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:02:17,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:17,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:17,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:17,828 INFO L87 Difference]: Start difference. First operand 95108 states and 114314 transitions. Second operand 4 states. [2018-11-06 22:02:34,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:34,663 INFO L93 Difference]: Finished difference Result 238036 states and 291029 transitions. [2018-11-06 22:02:34,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:34,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 532 [2018-11-06 22:02:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:34,841 INFO L225 Difference]: With dead ends: 238036 [2018-11-06 22:02:34,841 INFO L226 Difference]: Without dead ends: 142930 [2018-11-06 22:02:34,945 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142930 states. [2018-11-06 22:02:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142930 to 142919. [2018-11-06 22:02:36,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142919 states. [2018-11-06 22:02:37,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142919 states to 142919 states and 167348 transitions. [2018-11-06 22:02:37,344 INFO L78 Accepts]: Start accepts. Automaton has 142919 states and 167348 transitions. Word has length 532 [2018-11-06 22:02:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:37,345 INFO L480 AbstractCegarLoop]: Abstraction has 142919 states and 167348 transitions. [2018-11-06 22:02:37,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:02:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 142919 states and 167348 transitions. [2018-11-06 22:02:37,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2018-11-06 22:02:37,383 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:37,384 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:02:37,384 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:37,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:37,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1642943849, now seen corresponding path program 1 times [2018-11-06 22:02:37,386 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:37,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:37,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:37,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:37,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:38,147 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 22:02:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-11-06 22:02:38,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:38,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:02:38,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:38,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:38,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:38,638 INFO L87 Difference]: Start difference. First operand 142919 states and 167348 transitions. Second operand 4 states. [2018-11-06 22:02:53,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:02:53,740 INFO L93 Difference]: Finished difference Result 285839 states and 334703 transitions. [2018-11-06 22:02:53,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:02:53,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 904 [2018-11-06 22:02:53,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:02:53,918 INFO L225 Difference]: With dead ends: 285839 [2018-11-06 22:02:53,918 INFO L226 Difference]: Without dead ends: 142922 [2018-11-06 22:02:53,992 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:54,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142922 states. [2018-11-06 22:02:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142922 to 131983. [2018-11-06 22:02:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131983 states. [2018-11-06 22:02:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131983 states to 131983 states and 147276 transitions. [2018-11-06 22:02:55,175 INFO L78 Accepts]: Start accepts. Automaton has 131983 states and 147276 transitions. Word has length 904 [2018-11-06 22:02:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:02:55,176 INFO L480 AbstractCegarLoop]: Abstraction has 131983 states and 147276 transitions. [2018-11-06 22:02:55,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:02:55,176 INFO L276 IsEmpty]: Start isEmpty. Operand 131983 states and 147276 transitions. [2018-11-06 22:02:55,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2018-11-06 22:02:55,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:02:55,191 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:55,191 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:02:55,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:02:55,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1882583691, now seen corresponding path program 1 times [2018-11-06 22:02:55,192 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:02:55,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:02:55,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:55,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:02:55,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:02:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:02:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-11-06 22:02:57,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:02:57,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:02:57,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:02:57,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:02:57,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:02:57,359 INFO L87 Difference]: Start difference. First operand 131983 states and 147276 transitions. Second operand 4 states. [2018-11-06 22:03:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:03:15,990 INFO L93 Difference]: Finished difference Result 451279 states and 505202 transitions. [2018-11-06 22:03:15,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:03:15,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 922 [2018-11-06 22:03:15,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:03:16,396 INFO L225 Difference]: With dead ends: 451279 [2018-11-06 22:03:16,397 INFO L226 Difference]: Without dead ends: 308366 [2018-11-06 22:03:16,491 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:03:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308366 states. [2018-11-06 22:03:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308366 to 304114. [2018-11-06 22:03:20,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304114 states. [2018-11-06 22:03:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304114 states to 304114 states and 333815 transitions. [2018-11-06 22:03:20,440 INFO L78 Accepts]: Start accepts. Automaton has 304114 states and 333815 transitions. Word has length 922 [2018-11-06 22:03:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:03:20,442 INFO L480 AbstractCegarLoop]: Abstraction has 304114 states and 333815 transitions. [2018-11-06 22:03:20,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:03:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 304114 states and 333815 transitions. [2018-11-06 22:03:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2018-11-06 22:03:20,462 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:03:20,463 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:20,463 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:03:20,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:03:20,463 INFO L82 PathProgramCache]: Analyzing trace with hash 617028723, now seen corresponding path program 1 times [2018-11-06 22:03:20,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:03:20,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:03:20,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:20,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:03:20,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:03:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 524 proven. 4 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-11-06 22:03:25,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:03:25,067 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 22:03:25,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:03:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:03:25,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:03:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-11-06 22:03:27,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:03:27,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 22:03:27,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:03:27,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:03:27,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:03:27,888 INFO L87 Difference]: Start difference. First operand 304114 states and 333815 transitions. Second operand 5 states. Received shutdown request... [2018-11-06 22:03:43,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:03:43,105 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:03:43,110 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:03:43,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:03:43 BoogieIcfgContainer [2018-11-06 22:03:43,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:03:43,111 INFO L168 Benchmark]: Toolchain (without parser) took 221383.38 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 568.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:43,112 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:03:43,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3325.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:43,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 1215.15 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 851.4 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:43,115 INFO L168 Benchmark]: Boogie Preprocessor took 809.59 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 112.9 MB). Peak memory consumption was 112.9 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:43,116 INFO L168 Benchmark]: RCFGBuilder took 16154.45 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 305.1 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -366.8 MB). Peak memory consumption was 802.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:43,117 INFO L168 Benchmark]: TraceAbstraction took 199870.85 ms. Allocated memory was 2.7 GB in the beginning and 4.4 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. [2018-11-06 22:03:43,122 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3325.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1215.15 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 851.4 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 809.59 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 112.9 MB). Peak memory consumption was 112.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16154.45 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 305.1 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -366.8 MB). Peak memory consumption was 802.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199870.85 ms. Allocated memory was 2.7 GB in the beginning and 4.4 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was constructing difference of abstraction (304114states) and FLOYD_HOARE automaton (currently 6 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (43913 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 199.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 173.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10234 SDtfs, 35811 SDslu, 3900 SDs, 0 SdLazy, 88595 SolverSat, 18756 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 141.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1145 GetRequests, 1108 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=304114occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 23694 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 5593 NumberOfCodeBlocks, 5593 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 5583 ConstructedInterpolants, 0 QuantifiedInterpolants, 11655803 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1226 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3796/3800 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown