java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:08:29,452 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:08:29,454 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:08:29,467 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:08:29,467 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:08:29,468 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:08:29,469 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:08:29,471 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:08:29,473 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:08:29,474 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:08:29,475 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:08:29,475 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:08:29,476 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:08:29,477 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:08:29,478 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:08:29,479 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:08:29,479 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:08:29,481 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:08:29,483 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:08:29,485 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:08:29,486 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:08:29,487 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:08:29,490 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:08:29,490 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:08:29,490 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:08:29,491 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:08:29,492 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:08:29,493 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:08:29,494 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:08:29,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:08:29,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:08:29,496 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:08:29,498 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:08:29,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:08:29,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:08:29,514 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:08:29,514 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:08:29,515 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:08:29,515 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:08:29,515 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:08:29,516 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:08:29,516 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:08:29,516 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:08:29,516 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:08:29,516 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:08:29,517 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:08:29,517 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:08:29,517 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:08:29,517 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:08:29,518 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:08:29,518 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:08:29,518 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:08:29,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:08:29,518 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:08:29,519 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:08:29,519 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:08:29,519 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:08:29,519 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:08:29,519 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:08:29,520 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:08:29,520 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:08:29,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:08:29,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:08:29,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:08:29,582 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:08:29,583 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:08:29,584 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-10-23 18:08:29,648 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a640fd5ab/77a214560b8b48a8b093f468d8229205/FLAG76dbdd65a [2018-10-23 18:08:30,448 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:08:30,450 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-10-23 18:08:30,495 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a640fd5ab/77a214560b8b48a8b093f468d8229205/FLAG76dbdd65a [2018-10-23 18:08:30,515 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a640fd5ab/77a214560b8b48a8b093f468d8229205 [2018-10-23 18:08:30,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:08:30,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:08:30,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:08:30,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:08:30,535 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:08:30,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:08:30" (1/1) ... [2018-10-23 18:08:30,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9642eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:30, skipping insertion in model container [2018-10-23 18:08:30,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:08:30" (1/1) ... [2018-10-23 18:08:30,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:08:30,726 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:08:32,214 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:08:32,219 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:08:33,377 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:08:33,419 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:08:33,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33 WrapperNode [2018-10-23 18:08:33,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:08:33,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:08:33,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:08:33,421 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:08:33,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... [2018-10-23 18:08:33,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... [2018-10-23 18:08:34,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:08:34,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:08:34,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:08:34,396 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:08:34,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... [2018-10-23 18:08:34,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... [2018-10-23 18:08:34,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... [2018-10-23 18:08:34,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... [2018-10-23 18:08:34,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... [2018-10-23 18:08:34,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... [2018-10-23 18:08:34,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... [2018-10-23 18:08:34,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:08:34,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:08:34,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:08:34,852 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:08:34,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:08:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:08:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:08:34,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:08:52,508 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:08:52,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:08:52 BoogieIcfgContainer [2018-10-23 18:08:52,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:08:52,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:08:52,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:08:52,513 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:08:52,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:08:30" (1/3) ... [2018-10-23 18:08:52,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fffb2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:08:52, skipping insertion in model container [2018-10-23 18:08:52,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:08:33" (2/3) ... [2018-10-23 18:08:52,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fffb2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:08:52, skipping insertion in model container [2018-10-23 18:08:52,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:08:52" (3/3) ... [2018-10-23 18:08:52,518 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label45_false-unreach-call.c [2018-10-23 18:08:52,528 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:08:52,537 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:08:52,555 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:08:52,602 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:08:52,603 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:08:52,603 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:08:52,603 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:08:52,603 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:08:52,603 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:08:52,603 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:08:52,604 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:08:52,604 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:08:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 18:08:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-23 18:08:52,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:08:52,660 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:08:52,663 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:08:52,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:08:52,669 INFO L82 PathProgramCache]: Analyzing trace with hash 150940466, now seen corresponding path program 1 times [2018-10-23 18:08:52,672 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:08:52,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:08:52,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:52,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:08:52,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:08:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:08:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:08:52,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:08:52,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:08:52,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:08:52,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:08:52,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:08:52,916 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 3 states. [2018-10-23 18:09:03,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:03,786 INFO L93 Difference]: Finished difference Result 3038 states and 5646 transitions. [2018-10-23 18:09:03,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:09:03,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-23 18:09:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:03,830 INFO L225 Difference]: With dead ends: 3038 [2018-10-23 18:09:03,831 INFO L226 Difference]: Without dead ends: 1935 [2018-10-23 18:09:03,841 INFO L605 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 [2018-10-23 18:09:03,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2018-10-23 18:09:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1921. [2018-10-23 18:09:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2018-10-23 18:09:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3004 transitions. [2018-10-23 18:09:04,000 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3004 transitions. Word has length 8 [2018-10-23 18:09:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:04,000 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 3004 transitions. [2018-10-23 18:09:04,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:09:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3004 transitions. [2018-10-23 18:09:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-23 18:09:04,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:04,005 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:09:04,006 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:04,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1966810658, now seen corresponding path program 1 times [2018-10-23 18:09:04,006 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:04,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:04,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:04,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:04,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:04,726 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 18:09:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:09:04,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:04,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:09:04,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:09:04,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:09:04,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:09:04,984 INFO L87 Difference]: Start difference. First operand 1921 states and 3004 transitions. Second operand 5 states. [2018-10-23 18:09:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:26,999 INFO L93 Difference]: Finished difference Result 7027 states and 10524 transitions. [2018-10-23 18:09:27,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:09:27,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2018-10-23 18:09:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:27,029 INFO L225 Difference]: With dead ends: 7027 [2018-10-23 18:09:27,029 INFO L226 Difference]: Without dead ends: 5108 [2018-10-23 18:09:27,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:09:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5108 states. [2018-10-23 18:09:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5108 to 5107. [2018-10-23 18:09:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5107 states. [2018-10-23 18:09:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 6806 transitions. [2018-10-23 18:09:27,149 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 6806 transitions. Word has length 81 [2018-10-23 18:09:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:27,150 INFO L481 AbstractCegarLoop]: Abstraction has 5107 states and 6806 transitions. [2018-10-23 18:09:27,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:09:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 6806 transitions. [2018-10-23 18:09:27,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-23 18:09:27,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:27,169 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:27,169 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:27,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:27,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1519502355, now seen corresponding path program 1 times [2018-10-23 18:09:27,170 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:27,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:27,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:27,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:27,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-23 18:09:27,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:09:27,539 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:09:27,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:27,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:09:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:09:27,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:09:27,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:09:27,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:09:27,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:09:27,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:27,716 INFO L87 Difference]: Start difference. First operand 5107 states and 6806 transitions. Second operand 4 states. [2018-10-23 18:09:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:09:39,162 INFO L93 Difference]: Finished difference Result 16577 states and 23048 transitions. [2018-10-23 18:09:39,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:09:39,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-10-23 18:09:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:09:39,233 INFO L225 Difference]: With dead ends: 16577 [2018-10-23 18:09:39,233 INFO L226 Difference]: Without dead ends: 12260 [2018-10-23 18:09:39,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:09:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12260 states. [2018-10-23 18:09:39,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12260 to 8276. [2018-10-23 18:09:39,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8276 states. [2018-10-23 18:09:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8276 states to 8276 states and 10661 transitions. [2018-10-23 18:09:39,441 INFO L78 Accepts]: Start accepts. Automaton has 8276 states and 10661 transitions. Word has length 177 [2018-10-23 18:09:39,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:09:39,442 INFO L481 AbstractCegarLoop]: Abstraction has 8276 states and 10661 transitions. [2018-10-23 18:09:39,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:09:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8276 states and 10661 transitions. [2018-10-23 18:09:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-23 18:09:39,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:09:39,447 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:09:39,451 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:09:39,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:09:39,451 INFO L82 PathProgramCache]: Analyzing trace with hash 234639946, now seen corresponding path program 1 times [2018-10-23 18:09:39,451 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:09:39,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:09:39,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:39,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:09:39,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:09:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:09:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:09:39,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:09:39,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:09:39,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:09:39,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:09:39,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:09:39,852 INFO L87 Difference]: Start difference. First operand 8276 states and 10661 transitions. Second operand 5 states. [2018-10-23 18:10:00,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:00,179 INFO L93 Difference]: Finished difference Result 35769 states and 47453 transitions. [2018-10-23 18:10:00,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:10:00,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2018-10-23 18:10:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:00,273 INFO L225 Difference]: With dead ends: 35769 [2018-10-23 18:10:00,273 INFO L226 Difference]: Without dead ends: 28283 [2018-10-23 18:10:00,287 INFO L605 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 [2018-10-23 18:10:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28283 states. [2018-10-23 18:10:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28283 to 28107. [2018-10-23 18:10:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28107 states. [2018-10-23 18:10:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28107 states to 28107 states and 34886 transitions. [2018-10-23 18:10:00,717 INFO L78 Accepts]: Start accepts. Automaton has 28107 states and 34886 transitions. Word has length 191 [2018-10-23 18:10:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:00,718 INFO L481 AbstractCegarLoop]: Abstraction has 28107 states and 34886 transitions. [2018-10-23 18:10:00,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:10:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 28107 states and 34886 transitions. [2018-10-23 18:10:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-23 18:10:00,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:00,723 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:10:00,723 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:00,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:00,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1170448595, now seen corresponding path program 1 times [2018-10-23 18:10:00,724 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:00,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:00,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:00,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:00,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-23 18:10:00,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:00,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:10:00,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:10:00,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:10:00,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:10:00,994 INFO L87 Difference]: Start difference. First operand 28107 states and 34886 transitions. Second operand 3 states. [2018-10-23 18:10:10,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:10,452 INFO L93 Difference]: Finished difference Result 79846 states and 99837 transitions. [2018-10-23 18:10:10,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:10:10,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2018-10-23 18:10:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:10,560 INFO L225 Difference]: With dead ends: 79846 [2018-10-23 18:10:10,560 INFO L226 Difference]: Without dead ends: 52529 [2018-10-23 18:10:10,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:10:10,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52529 states. [2018-10-23 18:10:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52529 to 50159. [2018-10-23 18:10:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50159 states. [2018-10-23 18:10:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50159 states to 50159 states and 59198 transitions. [2018-10-23 18:10:11,601 INFO L78 Accepts]: Start accepts. Automaton has 50159 states and 59198 transitions. Word has length 207 [2018-10-23 18:10:11,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:11,602 INFO L481 AbstractCegarLoop]: Abstraction has 50159 states and 59198 transitions. [2018-10-23 18:10:11,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:10:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 50159 states and 59198 transitions. [2018-10-23 18:10:11,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-10-23 18:10:11,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:11,613 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:10:11,614 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:11,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:11,614 INFO L82 PathProgramCache]: Analyzing trace with hash -343111697, now seen corresponding path program 1 times [2018-10-23 18:10:11,614 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:11,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:11,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:11,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:11,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 18:10:11,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:11,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:10:11,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:10:11,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:10:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:10:11,868 INFO L87 Difference]: Start difference. First operand 50159 states and 59198 transitions. Second operand 3 states. [2018-10-23 18:10:20,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:20,012 INFO L93 Difference]: Finished difference Result 123962 states and 149063 transitions. [2018-10-23 18:10:20,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:10:20,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 296 [2018-10-23 18:10:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:20,199 INFO L225 Difference]: With dead ends: 123962 [2018-10-23 18:10:20,199 INFO L226 Difference]: Without dead ends: 74593 [2018-10-23 18:10:20,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:10:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74593 states. [2018-10-23 18:10:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74593 to 70641. [2018-10-23 18:10:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70641 states. [2018-10-23 18:10:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70641 states to 70641 states and 81400 transitions. [2018-10-23 18:10:21,621 INFO L78 Accepts]: Start accepts. Automaton has 70641 states and 81400 transitions. Word has length 296 [2018-10-23 18:10:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:21,622 INFO L481 AbstractCegarLoop]: Abstraction has 70641 states and 81400 transitions. [2018-10-23 18:10:21,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:10:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 70641 states and 81400 transitions. [2018-10-23 18:10:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-23 18:10:21,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:21,633 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 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] [2018-10-23 18:10:21,633 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:21,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1978878205, now seen corresponding path program 1 times [2018-10-23 18:10:21,634 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:21,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:21,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:21,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:21,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 18:10:22,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:22,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:10:22,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:10:22,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:10:22,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:22,018 INFO L87 Difference]: Start difference. First operand 70641 states and 81400 transitions. Second operand 4 states. [2018-10-23 18:10:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:35,460 INFO L93 Difference]: Finished difference Result 183088 states and 217174 transitions. [2018-10-23 18:10:35,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:10:35,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2018-10-23 18:10:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:35,624 INFO L225 Difference]: With dead ends: 183088 [2018-10-23 18:10:35,625 INFO L226 Difference]: Without dead ends: 113237 [2018-10-23 18:10:35,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:10:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113237 states. [2018-10-23 18:10:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113237 to 107670. [2018-10-23 18:10:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107670 states. [2018-10-23 18:10:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107670 states to 107670 states and 124991 transitions. [2018-10-23 18:10:36,726 INFO L78 Accepts]: Start accepts. Automaton has 107670 states and 124991 transitions. Word has length 309 [2018-10-23 18:10:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:10:36,727 INFO L481 AbstractCegarLoop]: Abstraction has 107670 states and 124991 transitions. [2018-10-23 18:10:36,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:10:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 107670 states and 124991 transitions. [2018-10-23 18:10:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-10-23 18:10:36,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:10:36,739 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-23 18:10:36,740 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:10:36,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:10:36,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1415611987, now seen corresponding path program 1 times [2018-10-23 18:10:36,740 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:10:36,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:10:36,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:36,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:10:36,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:10:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:10:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-23 18:10:37,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:10:37,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:10:37,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:10:37,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:10:37,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:10:37,147 INFO L87 Difference]: Start difference. First operand 107670 states and 124991 transitions. Second operand 6 states. [2018-10-23 18:10:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:10:57,662 INFO L93 Difference]: Finished difference Result 283313 states and 328716 transitions. [2018-10-23 18:10:57,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:10:57,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 341 [2018-10-23 18:10:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:10:57,880 INFO L225 Difference]: With dead ends: 283313 [2018-10-23 18:10:57,880 INFO L226 Difference]: Without dead ends: 176433 [2018-10-23 18:10:57,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:10:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176433 states. [2018-10-23 18:11:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176433 to 170806. [2018-10-23 18:11:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170806 states. [2018-10-23 18:11:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170806 states to 170806 states and 195739 transitions. [2018-10-23 18:11:00,436 INFO L78 Accepts]: Start accepts. Automaton has 170806 states and 195739 transitions. Word has length 341 [2018-10-23 18:11:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:11:00,437 INFO L481 AbstractCegarLoop]: Abstraction has 170806 states and 195739 transitions. [2018-10-23 18:11:00,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:11:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 170806 states and 195739 transitions. [2018-10-23 18:11:00,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-23 18:11:00,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:11:00,446 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:11:00,446 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:11:00,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:11:00,447 INFO L82 PathProgramCache]: Analyzing trace with hash 34356073, now seen corresponding path program 1 times [2018-10-23 18:11:00,447 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:11:00,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:11:00,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:00,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:11:00,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:11:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 18:11:00,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:11:00,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:11:00,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:11:00,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:11:00,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:11:00,844 INFO L87 Difference]: Start difference. First operand 170806 states and 195739 transitions. Second operand 4 states. [2018-10-23 18:11:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:11:12,868 INFO L93 Difference]: Finished difference Result 358943 states and 410518 transitions. [2018-10-23 18:11:12,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:11:12,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 366 [2018-10-23 18:11:12,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:11:13,063 INFO L225 Difference]: With dead ends: 358943 [2018-10-23 18:11:13,064 INFO L226 Difference]: Without dead ends: 173119 [2018-10-23 18:11:13,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:11:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173119 states. [2018-10-23 18:11:14,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173119 to 169169. [2018-10-23 18:11:14,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169169 states. [2018-10-23 18:11:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169169 states to 169169 states and 189678 transitions. [2018-10-23 18:11:14,550 INFO L78 Accepts]: Start accepts. Automaton has 169169 states and 189678 transitions. Word has length 366 [2018-10-23 18:11:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:11:14,550 INFO L481 AbstractCegarLoop]: Abstraction has 169169 states and 189678 transitions. [2018-10-23 18:11:14,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:11:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 169169 states and 189678 transitions. [2018-10-23 18:11:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-23 18:11:14,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:11:14,553 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:11:14,553 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:11:14,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:11:14,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2074722948, now seen corresponding path program 1 times [2018-10-23 18:11:14,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:11:14,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:11:14,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:14,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:11:14,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:11:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 18:11:14,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:11:14,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:11:14,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:11:14,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:11:14,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:11:14,931 INFO L87 Difference]: Start difference. First operand 169169 states and 189678 transitions. Second operand 4 states. [2018-10-23 18:11:28,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:11:28,359 INFO L93 Difference]: Finished difference Result 335983 states and 376960 transitions. [2018-10-23 18:11:28,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:11:28,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2018-10-23 18:11:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:11:28,534 INFO L225 Difference]: With dead ends: 335983 [2018-10-23 18:11:28,534 INFO L226 Difference]: Without dead ends: 162854 [2018-10-23 18:11:28,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:11:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162854 states. [2018-10-23 18:11:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162854 to 157302. [2018-10-23 18:11:30,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157302 states. [2018-10-23 18:11:31,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157302 states to 157302 states and 169128 transitions. [2018-10-23 18:11:31,139 INFO L78 Accepts]: Start accepts. Automaton has 157302 states and 169128 transitions. Word has length 414 [2018-10-23 18:11:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:11:31,140 INFO L481 AbstractCegarLoop]: Abstraction has 157302 states and 169128 transitions. [2018-10-23 18:11:31,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:11:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 157302 states and 169128 transitions. [2018-10-23 18:11:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-10-23 18:11:31,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:11:31,144 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:11:31,145 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:11:31,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:11:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2029809358, now seen corresponding path program 1 times [2018-10-23 18:11:31,145 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:11:31,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:11:31,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:31,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:11:31,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:11:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-10-23 18:11:36,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:11:36,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:11:36,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:11:36,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:11:36,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:11:36,119 INFO L87 Difference]: Start difference. First operand 157302 states and 169128 transitions. Second operand 3 states. [2018-10-23 18:11:42,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:11:42,592 INFO L93 Difference]: Finished difference Result 309866 states and 333145 transitions. [2018-10-23 18:11:42,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:11:42,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 558 [2018-10-23 18:11:42,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:11:42,785 INFO L225 Difference]: With dead ends: 309866 [2018-10-23 18:11:42,786 INFO L226 Difference]: Without dead ends: 153354 [2018-10-23 18:11:42,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:11:42,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153354 states. [2018-10-23 18:11:44,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153354 to 150201. [2018-10-23 18:11:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150201 states. [2018-10-23 18:11:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150201 states to 150201 states and 158768 transitions. [2018-10-23 18:11:44,843 INFO L78 Accepts]: Start accepts. Automaton has 150201 states and 158768 transitions. Word has length 558 [2018-10-23 18:11:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:11:44,844 INFO L481 AbstractCegarLoop]: Abstraction has 150201 states and 158768 transitions. [2018-10-23 18:11:44,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:11:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 150201 states and 158768 transitions. [2018-10-23 18:11:44,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2018-10-23 18:11:44,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:11:44,856 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:11:44,856 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:11:44,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:11:44,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1860205593, now seen corresponding path program 1 times [2018-10-23 18:11:44,857 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:11:44,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:11:44,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:44,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:11:44,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:11:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:11:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 18:11:46,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:11:46,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:11:46,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:11:46,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:11:46,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:11:46,034 INFO L87 Difference]: Start difference. First operand 150201 states and 158768 transitions. Second operand 5 states. [2018-10-23 18:12:04,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:12:04,937 INFO L93 Difference]: Finished difference Result 395017 states and 417676 transitions. [2018-10-23 18:12:04,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:12:04,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 713 [2018-10-23 18:12:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:12:05,208 INFO L225 Difference]: With dead ends: 395017 [2018-10-23 18:12:05,208 INFO L226 Difference]: Without dead ends: 245606 [2018-10-23 18:12:05,295 INFO L605 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 [2018-10-23 18:12:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245606 states. [2018-10-23 18:12:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245606 to 225881. [2018-10-23 18:12:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225881 states. [2018-10-23 18:12:08,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225881 states to 225881 states and 236283 transitions. [2018-10-23 18:12:08,563 INFO L78 Accepts]: Start accepts. Automaton has 225881 states and 236283 transitions. Word has length 713 [2018-10-23 18:12:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:12:08,564 INFO L481 AbstractCegarLoop]: Abstraction has 225881 states and 236283 transitions. [2018-10-23 18:12:08,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:12:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 225881 states and 236283 transitions. [2018-10-23 18:12:08,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2018-10-23 18:12:08,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:12:08,575 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-23 18:12:08,575 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:12:08,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:12:08,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2123966827, now seen corresponding path program 1 times [2018-10-23 18:12:08,576 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:12:08,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:12:08,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:12:08,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:12:08,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:12:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:12:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 666 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2018-10-23 18:12:09,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:12:09,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:12:09,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:12:09,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:12:09,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:12:09,270 INFO L87 Difference]: Start difference. First operand 225881 states and 236283 transitions. Second operand 3 states. [2018-10-23 18:12:16,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:12:16,593 INFO L93 Difference]: Finished difference Result 450160 states and 470938 transitions. [2018-10-23 18:12:16,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:12:16,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 742 [2018-10-23 18:12:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:12:16,868 INFO L225 Difference]: With dead ends: 450160 [2018-10-23 18:12:16,869 INFO L226 Difference]: Without dead ends: 221907 [2018-10-23 18:12:16,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:12:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221907 states. Received shutdown request... [2018-10-23 18:12:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221907 to 206931. [2018-10-23 18:12:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206931 states. [2018-10-23 18:12:19,300 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:12:19,305 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:12:19,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:12:19 BoogieIcfgContainer [2018-10-23 18:12:19,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:12:19,307 INFO L168 Benchmark]: Toolchain (without parser) took 228777.95 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -404.8 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-23 18:12:19,308 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:12:19,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2889.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:12:19,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 973.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:12:19,311 INFO L168 Benchmark]: Boogie Preprocessor took 455.71 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:12:19,314 INFO L168 Benchmark]: RCFGBuilder took 17657.63 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 236.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 30.1 MB). Peak memory consumption was 618.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:12:19,315 INFO L168 Benchmark]: TraceAbstraction took 206796.07 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 263.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-23 18:12:19,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2889.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 973.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 455.71 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17657.63 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 236.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 30.1 MB). Peak memory consumption was 618.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206796.07 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 263.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 206.7s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 177.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13871 SDtfs, 25300 SDslu, 3796 SDs, 0 SdLazy, 63291 SolverSat, 13378 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 144.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 194 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225881occurred in iteration=12, 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: 18.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 54071 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 4580 NumberOfCodeBlocks, 4580 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4566 ConstructedInterpolants, 0 QuantifiedInterpolants, 4450358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 275 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 2911/2915 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown