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_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:11:38,679 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:11:38,681 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:11:38,693 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:11:38,693 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:11:38,694 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:11:38,695 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:11:38,697 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:11:38,701 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:11:38,703 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:11:38,709 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:11:38,709 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:11:38,710 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:11:38,714 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:11:38,715 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:11:38,719 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:11:38,720 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:11:38,723 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:11:38,725 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:11:38,730 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:11:38,732 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:11:38,733 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:11:38,737 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:11:38,738 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:11:38,738 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:11:38,739 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:11:38,740 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:11:38,741 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:11:38,741 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:11:38,745 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:11:38,745 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:11:38,746 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:11:38,746 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:11:38,747 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:11:38,747 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:11:38,750 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:11:38,750 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 [2018-10-26 19:11:38,769 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:11:38,769 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:11:38,770 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:11:38,770 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:11:38,771 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:11:38,771 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:11:38,771 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:11:38,772 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:11:38,772 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:11:38,772 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:11:38,772 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:11:38,772 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:11:38,772 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:11:38,773 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:11:38,773 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:11:38,773 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:11:38,773 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:11:38,773 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:11:38,774 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:11:38,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:11:38,774 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:11:38,774 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:11:38,774 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:11:38,775 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:11:38,775 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:11:38,775 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:11:38,775 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:11:38,775 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:11:38,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:11:38,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:11:38,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:11:38,863 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:11:38,863 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:11:38,864 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label06_false-unreach-call.c [2018-10-26 19:11:38,927 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8b0e4dc50/019ccbc784b14df9960ebe4eaaa8ce2e/FLAG54e0ac389 [2018-10-26 19:11:39,687 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:11:39,688 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label06_false-unreach-call.c [2018-10-26 19:11:39,729 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8b0e4dc50/019ccbc784b14df9960ebe4eaaa8ce2e/FLAG54e0ac389 [2018-10-26 19:11:39,754 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8b0e4dc50/019ccbc784b14df9960ebe4eaaa8ce2e [2018-10-26 19:11:39,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:11:39,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:11:39,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:11:39,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:11:39,776 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:11:39,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:11:39" (1/1) ... [2018-10-26 19:11:39,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a00482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:39, skipping insertion in model container [2018-10-26 19:11:39,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:11:39" (1/1) ... [2018-10-26 19:11:39,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:11:39,996 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:11:41,436 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:11:41,442 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:11:42,246 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:11:42,286 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:11:42,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42 WrapperNode [2018-10-26 19:11:42,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:11:42,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:11:42,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:11:42,288 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:11:42,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (1/1) ... [2018-10-26 19:11:42,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (1/1) ... [2018-10-26 19:11:43,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:11:43,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:11:43,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:11:43,180 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:11:43,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (1/1) ... [2018-10-26 19:11:43,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (1/1) ... [2018-10-26 19:11:43,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (1/1) ... [2018-10-26 19:11:43,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (1/1) ... [2018-10-26 19:11:43,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (1/1) ... [2018-10-26 19:11:43,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (1/1) ... [2018-10-26 19:11:43,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (1/1) ... [2018-10-26 19:11:43,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:11:43,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:11:43,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:11:43,775 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:11:43,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (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 [2018-10-26 19:11:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:11:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:11:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:11:57,302 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:11:57,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:11:57 BoogieIcfgContainer [2018-10-26 19:11:57,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:11:57,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:11:57,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:11:57,308 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:11:57,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:11:39" (1/3) ... [2018-10-26 19:11:57,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2b2522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:11:57, skipping insertion in model container [2018-10-26 19:11:57,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:11:42" (2/3) ... [2018-10-26 19:11:57,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2b2522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:11:57, skipping insertion in model container [2018-10-26 19:11:57,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:11:57" (3/3) ... [2018-10-26 19:11:57,312 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label06_false-unreach-call.c [2018-10-26 19:11:57,322 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:11:57,333 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:11:57,351 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:11:57,398 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:11:57,399 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:11:57,399 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:11:57,399 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:11:57,399 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:11:57,399 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:11:57,400 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:11:57,400 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:11:57,400 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:11:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 19:11:57,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 19:11:57,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:57,451 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] [2018-10-26 19:11:57,454 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:57,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1580163962, now seen corresponding path program 1 times [2018-10-26 19:11:57,461 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:57,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:57,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:57,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:57,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:11:57,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:57,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:11:57,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:11:57,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:11:57,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:57,865 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 19:12:12,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:12,741 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-26 19:12:12,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:12:12,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-26 19:12:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:12,794 INFO L225 Difference]: With dead ends: 3896 [2018-10-26 19:12:12,794 INFO L226 Difference]: Without dead ends: 2790 [2018-10-26 19:12:12,802 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 [2018-10-26 19:12:12,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-26 19:12:12,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-26 19:12:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-26 19:12:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-26 19:12:12,950 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 26 [2018-10-26 19:12:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:12,951 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-26 19:12:12,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:12:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-26 19:12:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-26 19:12:12,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:12,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:12,955 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:12,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:12,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1245921282, now seen corresponding path program 1 times [2018-10-26 19:12:12,956 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:12,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:12,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:12,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:12,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:13,869 WARN L179 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 19:12:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:12:13,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:13,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:12:13,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:12:13,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:12:13,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:12:13,967 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-26 19:12:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:34,766 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-26 19:12:34,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:12:34,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2018-10-26 19:12:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:34,792 INFO L225 Difference]: With dead ends: 7061 [2018-10-26 19:12:34,792 INFO L226 Difference]: Without dead ends: 5118 [2018-10-26 19:12:34,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:12:34,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-26 19:12:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-26 19:12:34,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-26 19:12:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-26 19:12:34,898 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 92 [2018-10-26 19:12:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:34,899 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-26 19:12:34,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:12:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-26 19:12:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-26 19:12:34,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:34,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:34,905 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:34,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1189910277, now seen corresponding path program 1 times [2018-10-26 19:12:34,905 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:34,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:34,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:34,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:34,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:12:35,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:12:35,120 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 [2018-10-26 19:12:35,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:35,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:12:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-26 19:12:35,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:12:35,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-26 19:12:35,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:12:35,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:12:35,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:12:35,411 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 6 states. [2018-10-26 19:13:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:11,532 INFO L93 Difference]: Finished difference Result 32600 states and 52590 transitions. [2018-10-26 19:13:11,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:13:11,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-10-26 19:13:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:11,642 INFO L225 Difference]: With dead ends: 32600 [2018-10-26 19:13:11,642 INFO L226 Difference]: Without dead ends: 28273 [2018-10-26 19:13:11,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:13:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28273 states. [2018-10-26 19:13:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28273 to 28062. [2018-10-26 19:13:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28062 states. [2018-10-26 19:13:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28062 states to 28062 states and 36224 transitions. [2018-10-26 19:13:12,198 INFO L78 Accepts]: Start accepts. Automaton has 28062 states and 36224 transitions. Word has length 152 [2018-10-26 19:13:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:12,199 INFO L481 AbstractCegarLoop]: Abstraction has 28062 states and 36224 transitions. [2018-10-26 19:13:12,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:13:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 28062 states and 36224 transitions. [2018-10-26 19:13:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-26 19:13:12,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:12,218 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:13:12,218 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:12,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:12,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1157692297, now seen corresponding path program 1 times [2018-10-26 19:13:12,219 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:12,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:12,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:12,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:12,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-26 19:13:12,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:12,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:13:12,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:13:12,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:13:12,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:13:12,583 INFO L87 Difference]: Start difference. First operand 28062 states and 36224 transitions. Second operand 3 states. [2018-10-26 19:13:22,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:22,192 INFO L93 Difference]: Finished difference Result 78970 states and 102983 transitions. [2018-10-26 19:13:22,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:13:22,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2018-10-26 19:13:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:22,326 INFO L225 Difference]: With dead ends: 78970 [2018-10-26 19:13:22,326 INFO L226 Difference]: Without dead ends: 51698 [2018-10-26 19:13:22,362 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 [2018-10-26 19:13:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51698 states. [2018-10-26 19:13:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51698 to 51696. [2018-10-26 19:13:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51696 states. [2018-10-26 19:13:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51696 states to 51696 states and 63064 transitions. [2018-10-26 19:13:23,069 INFO L78 Accepts]: Start accepts. Automaton has 51696 states and 63064 transitions. Word has length 258 [2018-10-26 19:13:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:23,071 INFO L481 AbstractCegarLoop]: Abstraction has 51696 states and 63064 transitions. [2018-10-26 19:13:23,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:13:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 51696 states and 63064 transitions. [2018-10-26 19:13:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-26 19:13:23,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:23,087 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:23,087 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:23,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:23,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1360738627, now seen corresponding path program 1 times [2018-10-26 19:13:23,088 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:23,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:23,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:23,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:23,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 211 proven. 66 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-10-26 19:13:23,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:13:23,531 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:13:23,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:23,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:13:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-26 19:13:23,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:13:23,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 19:13:23,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:13:23,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:13:23,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:13:23,863 INFO L87 Difference]: Start difference. First operand 51696 states and 63064 transitions. Second operand 5 states. [2018-10-26 19:13:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:37,700 INFO L93 Difference]: Finished difference Result 179090 states and 220801 transitions. [2018-10-26 19:13:37,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:13:37,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2018-10-26 19:13:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:37,999 INFO L225 Difference]: With dead ends: 179090 [2018-10-26 19:13:38,000 INFO L226 Difference]: Without dead ends: 128184 [2018-10-26 19:13:38,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:13:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128184 states. [2018-10-26 19:13:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128184 to 105276. [2018-10-26 19:13:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105276 states. [2018-10-26 19:13:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105276 states to 105276 states and 122360 transitions. [2018-10-26 19:13:39,727 INFO L78 Accepts]: Start accepts. Automaton has 105276 states and 122360 transitions. Word has length 321 [2018-10-26 19:13:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:39,727 INFO L481 AbstractCegarLoop]: Abstraction has 105276 states and 122360 transitions. [2018-10-26 19:13:39,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:13:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 105276 states and 122360 transitions. [2018-10-26 19:13:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-10-26 19:13:39,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:39,744 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:39,744 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:39,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:39,745 INFO L82 PathProgramCache]: Analyzing trace with hash -798224648, now seen corresponding path program 1 times [2018-10-26 19:13:39,745 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:39,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:39,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:39,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:39,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-26 19:13:40,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:40,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:13:40,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:40,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:40,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:40,282 INFO L87 Difference]: Start difference. First operand 105276 states and 122360 transitions. Second operand 4 states. [2018-10-26 19:13:51,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:51,711 INFO L93 Difference]: Finished difference Result 288598 states and 342197 transitions. [2018-10-26 19:13:51,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:13:51,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 361 [2018-10-26 19:13:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:51,937 INFO L225 Difference]: With dead ends: 288598 [2018-10-26 19:13:51,938 INFO L226 Difference]: Without dead ends: 184112 [2018-10-26 19:13:52,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:52,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184112 states. [2018-10-26 19:13:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184112 to 184076. [2018-10-26 19:13:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184076 states. [2018-10-26 19:13:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184076 states to 184076 states and 210961 transitions. [2018-10-26 19:13:53,713 INFO L78 Accepts]: Start accepts. Automaton has 184076 states and 210961 transitions. Word has length 361 [2018-10-26 19:13:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:53,714 INFO L481 AbstractCegarLoop]: Abstraction has 184076 states and 210961 transitions. [2018-10-26 19:13:53,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:13:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 184076 states and 210961 transitions. [2018-10-26 19:13:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-10-26 19:13:53,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:53,732 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:53,732 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:53,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:53,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1127689357, now seen corresponding path program 1 times [2018-10-26 19:13:53,733 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:53,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:53,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:53,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:53,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-26 19:13:55,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:55,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:13:55,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:55,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:55,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:55,091 INFO L87 Difference]: Start difference. First operand 184076 states and 210961 transitions. Second operand 4 states. [2018-10-26 19:14:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:04,915 INFO L93 Difference]: Finished difference Result 383908 states and 439484 transitions. [2018-10-26 19:14:04,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:14:04,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 407 [2018-10-26 19:14:04,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:05,112 INFO L225 Difference]: With dead ends: 383908 [2018-10-26 19:14:05,113 INFO L226 Difference]: Without dead ends: 174539 [2018-10-26 19:14:05,215 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 [2018-10-26 19:14:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174539 states. [2018-10-26 19:14:07,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174539 to 161141. [2018-10-26 19:14:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161141 states. [2018-10-26 19:14:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161141 states to 161141 states and 181502 transitions. [2018-10-26 19:14:07,753 INFO L78 Accepts]: Start accepts. Automaton has 161141 states and 181502 transitions. Word has length 407 [2018-10-26 19:14:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:07,753 INFO L481 AbstractCegarLoop]: Abstraction has 161141 states and 181502 transitions. [2018-10-26 19:14:07,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:14:07,753 INFO L276 IsEmpty]: Start isEmpty. Operand 161141 states and 181502 transitions. [2018-10-26 19:14:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-10-26 19:14:07,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:07,762 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 19:14:07,762 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:07,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:07,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1727764676, now seen corresponding path program 1 times [2018-10-26 19:14:07,763 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:07,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:07,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:07,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:07,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 363 proven. 24 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-26 19:14:08,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:14:08,453 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:14:08,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:08,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:14:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2018-10-26 19:14:08,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:14:08,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 19:14:08,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:14:08,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:14:08,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:14:08,852 INFO L87 Difference]: Start difference. First operand 161141 states and 181502 transitions. Second operand 5 states. [2018-10-26 19:14:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:19,350 INFO L93 Difference]: Finished difference Result 323843 states and 366078 transitions. [2018-10-26 19:14:19,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:14:19,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 451 [2018-10-26 19:14:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:19,544 INFO L225 Difference]: With dead ends: 323843 [2018-10-26 19:14:19,544 INFO L226 Difference]: Without dead ends: 163492 [2018-10-26 19:14:19,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 452 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:14:19,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163492 states. [2018-10-26 19:14:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163492 to 154818. [2018-10-26 19:14:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154818 states. [2018-10-26 19:14:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154818 states to 154818 states and 169149 transitions. [2018-10-26 19:14:22,504 INFO L78 Accepts]: Start accepts. Automaton has 154818 states and 169149 transitions. Word has length 451 [2018-10-26 19:14:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:22,505 INFO L481 AbstractCegarLoop]: Abstraction has 154818 states and 169149 transitions. [2018-10-26 19:14:22,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:14:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 154818 states and 169149 transitions. [2018-10-26 19:14:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-10-26 19:14:22,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:22,523 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:14:22,523 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:22,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:22,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1925283330, now seen corresponding path program 1 times [2018-10-26 19:14:22,523 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:22,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:22,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:22,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:22,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-10-26 19:14:23,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:14:23,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:14:23,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:14:23,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:14:23,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:14:23,034 INFO L87 Difference]: Start difference. First operand 154818 states and 169149 transitions. Second operand 4 states. [2018-10-26 19:14:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:36,674 INFO L93 Difference]: Finished difference Result 333278 states and 364878 transitions. [2018-10-26 19:14:36,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:14:36,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 619 [2018-10-26 19:14:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:36,915 INFO L225 Difference]: With dead ends: 333278 [2018-10-26 19:14:36,915 INFO L226 Difference]: Without dead ends: 178461 [2018-10-26 19:14:36,981 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 [2018-10-26 19:14:37,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178461 states. [2018-10-26 19:14:43,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178461 to 177648. [2018-10-26 19:14:43,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177648 states. [2018-10-26 19:14:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177648 states to 177648 states and 189751 transitions. [2018-10-26 19:14:43,584 INFO L78 Accepts]: Start accepts. Automaton has 177648 states and 189751 transitions. Word has length 619 [2018-10-26 19:14:43,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:43,585 INFO L481 AbstractCegarLoop]: Abstraction has 177648 states and 189751 transitions. [2018-10-26 19:14:43,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:14:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 177648 states and 189751 transitions. [2018-10-26 19:14:43,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2018-10-26 19:14:43,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:43,622 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:14:43,622 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:43,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:43,623 INFO L82 PathProgramCache]: Analyzing trace with hash -669336003, now seen corresponding path program 1 times [2018-10-26 19:14:43,623 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:43,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:43,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:43,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:43,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:44,212 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-26 19:14:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2018-10-26 19:14:44,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:14:44,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:14:44,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:14:44,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:14:44,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:14:44,976 INFO L87 Difference]: Start difference. First operand 177648 states and 189751 transitions. Second operand 4 states. [2018-10-26 19:14:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:55,662 INFO L93 Difference]: Finished difference Result 355309 states and 379540 transitions. [2018-10-26 19:14:55,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:14:55,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 805 [2018-10-26 19:14:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:55,900 INFO L225 Difference]: With dead ends: 355309 [2018-10-26 19:14:55,900 INFO L226 Difference]: Without dead ends: 177662 [2018-10-26 19:14:56,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:14:56,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177662 states. [2018-10-26 19:14:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177662 to 172920. [2018-10-26 19:14:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172920 states. [2018-10-26 19:14:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172920 states to 172920 states and 181803 transitions. [2018-10-26 19:14:58,557 INFO L78 Accepts]: Start accepts. Automaton has 172920 states and 181803 transitions. Word has length 805 [2018-10-26 19:14:58,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:58,560 INFO L481 AbstractCegarLoop]: Abstraction has 172920 states and 181803 transitions. [2018-10-26 19:14:58,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:14:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 172920 states and 181803 transitions. [2018-10-26 19:14:58,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2018-10-26 19:14:58,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:58,607 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:14:58,608 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:58,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:58,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1472153123, now seen corresponding path program 1 times [2018-10-26 19:14:58,608 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:58,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:58,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:58,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:58,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 1324 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-10-26 19:14:59,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:14:59,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:14:59,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:14:59,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:14:59,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:14:59,891 INFO L87 Difference]: Start difference. First operand 172920 states and 181803 transitions. Second operand 3 states. [2018-10-26 19:15:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:06,686 INFO L93 Difference]: Finished difference Result 347391 states and 365037 transitions. [2018-10-26 19:15:06,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:15:06,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 891 [2018-10-26 19:15:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:06,867 INFO L225 Difference]: With dead ends: 347391 [2018-10-26 19:15:06,867 INFO L226 Difference]: Without dead ends: 173678 [2018-10-26 19:15:06,922 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 [2018-10-26 19:15:07,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173678 states. [2018-10-26 19:15:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173678 to 165792. [2018-10-26 19:15:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165792 states. [2018-10-26 19:15:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165792 states to 165792 states and 172349 transitions. [2018-10-26 19:15:08,926 INFO L78 Accepts]: Start accepts. Automaton has 165792 states and 172349 transitions. Word has length 891 [2018-10-26 19:15:08,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:08,927 INFO L481 AbstractCegarLoop]: Abstraction has 165792 states and 172349 transitions. [2018-10-26 19:15:08,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:15:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 165792 states and 172349 transitions. [2018-10-26 19:15:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-10-26 19:15:08,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:08,970 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:15:08,971 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:08,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:08,971 INFO L82 PathProgramCache]: Analyzing trace with hash 86811946, now seen corresponding path program 1 times [2018-10-26 19:15:08,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:08,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:08,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:08,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:08,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2018-10-26 19:15:10,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:15:10,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:15:10,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:15:10,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:15:10,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:15:10,579 INFO L87 Difference]: Start difference. First operand 165792 states and 172349 transitions. Second operand 3 states. [2018-10-26 19:15:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:14,540 INFO L93 Difference]: Finished difference Result 329996 states and 343045 transitions. [2018-10-26 19:15:14,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:15:14,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 910 [2018-10-26 19:15:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:14,741 INFO L225 Difference]: With dead ends: 329996 [2018-10-26 19:15:14,742 INFO L226 Difference]: Without dead ends: 164992 [2018-10-26 19:15:14,827 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 [2018-10-26 19:15:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164992 states. [2018-10-26 19:15:16,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164992 to 164992. [2018-10-26 19:15:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164992 states. [2018-10-26 19:15:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164992 states to 164992 states and 171474 transitions. [2018-10-26 19:15:16,961 INFO L78 Accepts]: Start accepts. Automaton has 164992 states and 171474 transitions. Word has length 910 [2018-10-26 19:15:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:16,961 INFO L481 AbstractCegarLoop]: Abstraction has 164992 states and 171474 transitions. [2018-10-26 19:15:16,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:15:16,962 INFO L276 IsEmpty]: Start isEmpty. Operand 164992 states and 171474 transitions. [2018-10-26 19:15:17,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2018-10-26 19:15:17,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:17,017 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:17,017 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:17,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:17,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1054953850, now seen corresponding path program 1 times [2018-10-26 19:15:17,018 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:17,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:17,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:17,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:17,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 717 proven. 182 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-26 19:15:19,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:15:19,165 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:15:19,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:19,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:15:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-10-26 19:15:21,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:15:21,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-26 19:15:21,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:15:21,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:15:21,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:15:21,119 INFO L87 Difference]: Start difference. First operand 164992 states and 171474 transitions. Second operand 7 states. Received shutdown request... [2018-10-26 19:15:24,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:15:24,575 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:15:24,581 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:15:24,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:15:24 BoogieIcfgContainer [2018-10-26 19:15:24,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:15:24,582 INFO L168 Benchmark]: Toolchain (without parser) took 224814.14 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -608.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-26 19:15:24,583 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-10-26 19:15:24,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2516.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:15:24,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 891.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 820.5 MB). Free memory was 1.1 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. [2018-10-26 19:15:24,585 INFO L168 Benchmark]: Boogie Preprocessor took 594.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 70.4 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:15:24,586 INFO L168 Benchmark]: RCFGBuilder took 13528.77 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 247.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 12.3 MB). Peak memory consumption was 605.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:15:24,587 INFO L168 Benchmark]: TraceAbstraction took 207276.97 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 79.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-26 19:15:24,592 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2516.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 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 891.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 820.5 MB). Free memory was 1.1 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 594.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 70.4 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13528.77 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 247.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 12.3 MB). Peak memory consumption was 605.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207276.97 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 79.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was constructing difference of abstraction (164992states) and FLOYD_HOARE automaton (currently 5 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (9713 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 207.1s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 168.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9482 SDtfs, 32399 SDslu, 2911 SDs, 0 SdLazy, 62157 SolverSat, 17934 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 133.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2049 GetRequests, 2004 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184076occurred in iteration=6, 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: 23.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 59516 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 8355 NumberOfCodeBlocks, 8355 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 8338 ConstructedInterpolants, 90 QuantifiedInterpolants, 12792476 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2537 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 9883/10173 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown