java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:07:41,467 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:07:41,469 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:07:41,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:07:41,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:07:41,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:07:41,491 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:07:41,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:07:41,497 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:07:41,499 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:07:41,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:07:41,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:07:41,504 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:07:41,505 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:07:41,506 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:07:41,509 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:07:41,511 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:07:41,513 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:07:41,523 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:07:41,524 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:07:41,525 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:07:41,528 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:07:41,532 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:07:41,533 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:07:41,533 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:07:41,534 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:07:41,535 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:07:41,537 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:07:41,538 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:07:41,540 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:07:41,540 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:07:41,541 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 21:07:41,541 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 21:07:41,541 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 21:07:41,542 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 21:07:41,543 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 21:07:41,544 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:07:41,558 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:07:41,559 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:07:41,559 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:07:41,560 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:07:41,560 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:07:41,561 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:07:41,561 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:07:41,561 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:07:41,561 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:07:41,561 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:07:41,562 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:07:41,562 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:07:41,562 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:07:41,562 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:07:41,562 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:07:41,563 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:07:41,563 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:07:41,563 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:07:41,563 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:07:41,563 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:07:41,564 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:07:41,564 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:07:41,564 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:07:41,564 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:07:41,564 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:07:41,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:07:41,565 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:07:41,565 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:07:41,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:07:41,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:07:41,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:07:41,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:07:41,654 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:07:41,654 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-11-06 21:07:41,728 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b2de152/2ea4ecfd817f413c91cb7e576d6d864b/FLAGf9f5f3946 [2018-11-06 21:07:42,539 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:07:42,540 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-11-06 21:07:42,572 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b2de152/2ea4ecfd817f413c91cb7e576d6d864b/FLAGf9f5f3946 [2018-11-06 21:07:42,594 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b2de152/2ea4ecfd817f413c91cb7e576d6d864b [2018-11-06 21:07:42,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:07:42,609 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:07:42,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:07:42,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:07:42,615 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:07:42,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:42" (1/1) ... [2018-11-06 21:07:42,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30738b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:42, skipping insertion in model container [2018-11-06 21:07:42,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:07:42" (1/1) ... [2018-11-06 21:07:42,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:07:42,778 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:07:44,100 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:07:44,105 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:07:44,773 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:07:44,810 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:07:44,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44 WrapperNode [2018-11-06 21:07:44,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:07:44,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:07:44,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:07:44,812 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:07:44,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... [2018-11-06 21:07:45,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... [2018-11-06 21:07:45,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:07:45,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:07:45,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:07:45,464 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:07:45,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... [2018-11-06 21:07:45,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... [2018-11-06 21:07:45,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... [2018-11-06 21:07:45,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... [2018-11-06 21:07:45,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... [2018-11-06 21:07:45,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... [2018-11-06 21:07:45,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... [2018-11-06 21:07:45,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:07:45,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:07:45,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:07:45,790 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:07:45,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:07:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:07:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:07:45,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:07:54,337 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:07:54,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:54 BoogieIcfgContainer [2018-11-06 21:07:54,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:07:54,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:07:54,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:07:54,342 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:07:54,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:07:42" (1/3) ... [2018-11-06 21:07:54,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d852702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:54, skipping insertion in model container [2018-11-06 21:07:54,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:07:44" (2/3) ... [2018-11-06 21:07:54,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d852702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:07:54, skipping insertion in model container [2018-11-06 21:07:54,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:07:54" (3/3) ... [2018-11-06 21:07:54,347 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label05_true-unreach-call.c [2018-11-06 21:07:54,358 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:07:54,368 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:07:54,385 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:07:54,429 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:07:54,430 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:07:54,430 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:07:54,430 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:07:54,430 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:07:54,431 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:07:54,431 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:07:54,431 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:07:54,431 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:07:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-11-06 21:07:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-06 21:07:54,494 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:07:54,495 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:07:54,498 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:07:54,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:07:54,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1074201598, now seen corresponding path program 1 times [2018-11-06 21:07:54,508 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:07:54,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:07:54,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:07:54,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:07:54,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:07:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:07:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:07:54,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:07:54,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:07:54,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:07:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:07:54,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:07:55,002 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-11-06 21:08:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:08:08,288 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-11-06 21:08:08,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:08:08,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-06 21:08:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:08:08,339 INFO L225 Difference]: With dead ends: 3146 [2018-11-06 21:08:08,339 INFO L226 Difference]: Without dead ends: 2320 [2018-11-06 21:08:08,347 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:08:08,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-11-06 21:08:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-11-06 21:08:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-11-06 21:08:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-11-06 21:08:08,512 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 60 [2018-11-06 21:08:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:08:08,513 INFO L480 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-11-06 21:08:08,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:08:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-11-06 21:08:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-06 21:08:08,519 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:08:08,519 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:08:08,520 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:08:08,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:08:08,520 INFO L82 PathProgramCache]: Analyzing trace with hash -739096271, now seen corresponding path program 1 times [2018-11-06 21:08:08,520 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:08:08,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:08:08,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:08:08,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:08:08,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:08:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:08:09,127 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-11-06 21:08:09,309 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 52 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:08:09,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:08:09,309 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:08:09,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:08:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:08:09,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:08:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:08:09,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:08:09,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 21:08:09,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:08:09,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:08:09,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:08:09,620 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 7 states. [2018-11-06 21:08:11,466 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-11-06 21:08:34,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:08:34,015 INFO L93 Difference]: Finished difference Result 15950 states and 27417 transitions. [2018-11-06 21:08:34,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 21:08:34,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2018-11-06 21:08:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:08:34,069 INFO L225 Difference]: With dead ends: 15950 [2018-11-06 21:08:34,069 INFO L226 Difference]: Without dead ends: 11373 [2018-11-06 21:08:34,078 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:08:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2018-11-06 21:08:34,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 6831. [2018-11-06 21:08:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6831 states. [2018-11-06 21:08:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6831 states to 6831 states and 8672 transitions. [2018-11-06 21:08:34,238 INFO L78 Accepts]: Start accepts. Automaton has 6831 states and 8672 transitions. Word has length 132 [2018-11-06 21:08:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:08:34,238 INFO L480 AbstractCegarLoop]: Abstraction has 6831 states and 8672 transitions. [2018-11-06 21:08:34,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:08:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 6831 states and 8672 transitions. [2018-11-06 21:08:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-11-06 21:08:34,252 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:08:34,253 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:08:34,253 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:08:34,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:08:34,254 INFO L82 PathProgramCache]: Analyzing trace with hash 959738635, now seen corresponding path program 1 times [2018-11-06 21:08:34,254 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:08:34,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:08:34,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:08:34,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:08:34,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:08:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:08:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:08:34,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:08:34,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:08:34,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:08:34,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:08:34,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:08:34,828 INFO L87 Difference]: Start difference. First operand 6831 states and 8672 transitions. Second operand 4 states. [2018-11-06 21:08:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:08:42,679 INFO L93 Difference]: Finished difference Result 26444 states and 33663 transitions. [2018-11-06 21:08:42,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:08:42,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 275 [2018-11-06 21:08:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:08:42,750 INFO L225 Difference]: With dead ends: 26444 [2018-11-06 21:08:42,750 INFO L226 Difference]: Without dead ends: 19615 [2018-11-06 21:08:42,765 INFO L604 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 [2018-11-06 21:08:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19615 states. [2018-11-06 21:08:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19615 to 19615. [2018-11-06 21:08:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19615 states. [2018-11-06 21:08:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19615 states to 19615 states and 24199 transitions. [2018-11-06 21:08:43,135 INFO L78 Accepts]: Start accepts. Automaton has 19615 states and 24199 transitions. Word has length 275 [2018-11-06 21:08:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:08:43,136 INFO L480 AbstractCegarLoop]: Abstraction has 19615 states and 24199 transitions. [2018-11-06 21:08:43,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:08:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 19615 states and 24199 transitions. [2018-11-06 21:08:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-11-06 21:08:43,145 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:08:43,145 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:08:43,146 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:08:43,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:08:43,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1039496053, now seen corresponding path program 1 times [2018-11-06 21:08:43,146 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:08:43,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:08:43,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:08:43,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:08:43,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:08:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:08:43,546 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 21:08:43,813 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-11-06 21:08:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-06 21:08:44,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:08:44,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:08:44,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:08:44,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:08:44,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:08:44,135 INFO L87 Difference]: Start difference. First operand 19615 states and 24199 transitions. Second operand 6 states. [2018-11-06 21:08:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:08:52,961 INFO L93 Difference]: Finished difference Result 57277 states and 70860 transitions. [2018-11-06 21:08:52,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:08:52,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2018-11-06 21:08:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:08:53,030 INFO L225 Difference]: With dead ends: 57277 [2018-11-06 21:08:53,031 INFO L226 Difference]: Without dead ends: 37664 [2018-11-06 21:08:53,059 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:08:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37664 states. [2018-11-06 21:08:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37664 to 37664. [2018-11-06 21:08:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37664 states. [2018-11-06 21:08:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37664 states to 37664 states and 44629 transitions. [2018-11-06 21:08:53,738 INFO L78 Accepts]: Start accepts. Automaton has 37664 states and 44629 transitions. Word has length 275 [2018-11-06 21:08:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:08:53,739 INFO L480 AbstractCegarLoop]: Abstraction has 37664 states and 44629 transitions. [2018-11-06 21:08:53,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:08:53,739 INFO L276 IsEmpty]: Start isEmpty. Operand 37664 states and 44629 transitions. [2018-11-06 21:08:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-11-06 21:08:53,750 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:08:53,751 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:08:53,751 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:08:53,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:08:53,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1631092900, now seen corresponding path program 1 times [2018-11-06 21:08:53,752 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:08:53,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:08:53,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:08:53,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:08:53,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:08:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:08:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 115 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-06 21:08:54,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:08:54,468 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:08:54,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:08:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:08:54,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:08:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:08:54,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:08:54,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:08:54,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:08:54,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:08:54,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:08:54,719 INFO L87 Difference]: Start difference. First operand 37664 states and 44629 transitions. Second operand 4 states. [2018-11-06 21:09:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:09:01,930 INFO L93 Difference]: Finished difference Result 113739 states and 137973 transitions. [2018-11-06 21:09:01,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:09:01,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2018-11-06 21:09:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:09:02,093 INFO L225 Difference]: With dead ends: 113739 [2018-11-06 21:09:02,093 INFO L226 Difference]: Without dead ends: 76077 [2018-11-06 21:09:02,151 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:09:02,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76077 states. [2018-11-06 21:09:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76077 to 50448. [2018-11-06 21:09:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50448 states. [2018-11-06 21:09:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50448 states to 50448 states and 59938 transitions. [2018-11-06 21:09:03,295 INFO L78 Accepts]: Start accepts. Automaton has 50448 states and 59938 transitions. Word has length 308 [2018-11-06 21:09:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:09:03,296 INFO L480 AbstractCegarLoop]: Abstraction has 50448 states and 59938 transitions. [2018-11-06 21:09:03,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:09:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 50448 states and 59938 transitions. [2018-11-06 21:09:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-06 21:09:03,308 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:09:03,308 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-06 21:09:03,309 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:09:03,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:09:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash 444586520, now seen corresponding path program 1 times [2018-11-06 21:09:03,309 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:09:03,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:09:03,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:03,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:03,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 21:09:03,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:09:03,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:09:03,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:09:03,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:09:03,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:09:03,644 INFO L87 Difference]: Start difference. First operand 50448 states and 59938 transitions. Second operand 3 states. [2018-11-06 21:09:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:09:08,296 INFO L93 Difference]: Finished difference Result 111422 states and 133221 transitions. [2018-11-06 21:09:08,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:09:08,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 362 [2018-11-06 21:09:08,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:09:08,406 INFO L225 Difference]: With dead ends: 111422 [2018-11-06 21:09:08,407 INFO L226 Difference]: Without dead ends: 60976 [2018-11-06 21:09:08,445 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:09:08,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60976 states. [2018-11-06 21:09:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60976 to 58720. [2018-11-06 21:09:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58720 states. [2018-11-06 21:09:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58720 states to 58720 states and 68483 transitions. [2018-11-06 21:09:09,093 INFO L78 Accepts]: Start accepts. Automaton has 58720 states and 68483 transitions. Word has length 362 [2018-11-06 21:09:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:09:09,094 INFO L480 AbstractCegarLoop]: Abstraction has 58720 states and 68483 transitions. [2018-11-06 21:09:09,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:09:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 58720 states and 68483 transitions. [2018-11-06 21:09:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-11-06 21:09:09,109 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:09:09,110 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:09:09,110 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:09:09,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:09:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1785389000, now seen corresponding path program 1 times [2018-11-06 21:09:09,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:09:09,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:09:09,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:09,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:09,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 21:09:09,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:09:09,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:09:09,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:09:09,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:09:09,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:09:09,464 INFO L87 Difference]: Start difference. First operand 58720 states and 68483 transitions. Second operand 4 states. [2018-11-06 21:09:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:09:16,779 INFO L93 Difference]: Finished difference Result 119694 states and 139344 transitions. [2018-11-06 21:09:16,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:09:16,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 394 [2018-11-06 21:09:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:09:16,849 INFO L225 Difference]: With dead ends: 119694 [2018-11-06 21:09:16,849 INFO L226 Difference]: Without dead ends: 60976 [2018-11-06 21:09:16,890 INFO L604 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 [2018-11-06 21:09:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60976 states. [2018-11-06 21:09:17,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60976 to 60223. [2018-11-06 21:09:17,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60223 states. [2018-11-06 21:09:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60223 states to 60223 states and 68815 transitions. [2018-11-06 21:09:17,460 INFO L78 Accepts]: Start accepts. Automaton has 60223 states and 68815 transitions. Word has length 394 [2018-11-06 21:09:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:09:17,460 INFO L480 AbstractCegarLoop]: Abstraction has 60223 states and 68815 transitions. [2018-11-06 21:09:17,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:09:17,461 INFO L276 IsEmpty]: Start isEmpty. Operand 60223 states and 68815 transitions. [2018-11-06 21:09:17,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-11-06 21:09:17,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:09:17,471 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:09:17,471 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:09:17,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:09:17,472 INFO L82 PathProgramCache]: Analyzing trace with hash -484989361, now seen corresponding path program 1 times [2018-11-06 21:09:17,472 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:09:17,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:09:17,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:17,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:17,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 21:09:17,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:09:17,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:09:17,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:09:17,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:09:17,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:09:17,891 INFO L87 Difference]: Start difference. First operand 60223 states and 68815 transitions. Second operand 3 states. [2018-11-06 21:09:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:09:23,129 INFO L93 Difference]: Finished difference Result 136988 states and 158243 transitions. [2018-11-06 21:09:23,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:09:23,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 401 [2018-11-06 21:09:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:09:23,211 INFO L225 Difference]: With dead ends: 136988 [2018-11-06 21:09:23,211 INFO L226 Difference]: Without dead ends: 76767 [2018-11-06 21:09:23,243 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:09:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76767 states. [2018-11-06 21:09:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76767 to 76767. [2018-11-06 21:09:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76767 states. [2018-11-06 21:09:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76767 states to 76767 states and 88455 transitions. [2018-11-06 21:09:23,885 INFO L78 Accepts]: Start accepts. Automaton has 76767 states and 88455 transitions. Word has length 401 [2018-11-06 21:09:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:09:23,886 INFO L480 AbstractCegarLoop]: Abstraction has 76767 states and 88455 transitions. [2018-11-06 21:09:23,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:09:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 76767 states and 88455 transitions. [2018-11-06 21:09:23,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-11-06 21:09:23,897 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:09:23,898 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:09:23,898 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:09:23,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:09:23,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1560089356, now seen corresponding path program 1 times [2018-11-06 21:09:23,899 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:09:23,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:09:23,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:23,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:23,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 21:09:24,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:09:24,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:09:24,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:09:24,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:09:24,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:09:24,209 INFO L87 Difference]: Start difference. First operand 76767 states and 88455 transitions. Second operand 4 states. [2018-11-06 21:09:31,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:09:31,202 INFO L93 Difference]: Finished difference Result 210684 states and 243695 transitions. [2018-11-06 21:09:31,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:09:31,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2018-11-06 21:09:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:09:31,326 INFO L225 Difference]: With dead ends: 210684 [2018-11-06 21:09:31,326 INFO L226 Difference]: Without dead ends: 127893 [2018-11-06 21:09:31,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:09:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127893 states. [2018-11-06 21:09:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127893 to 125637. [2018-11-06 21:09:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125637 states. [2018-11-06 21:09:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125637 states to 125637 states and 138432 transitions. [2018-11-06 21:09:32,397 INFO L78 Accepts]: Start accepts. Automaton has 125637 states and 138432 transitions. Word has length 418 [2018-11-06 21:09:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:09:32,398 INFO L480 AbstractCegarLoop]: Abstraction has 125637 states and 138432 transitions. [2018-11-06 21:09:32,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:09:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 125637 states and 138432 transitions. [2018-11-06 21:09:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-11-06 21:09:32,407 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:09:32,408 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:09:32,408 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:09:32,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:09:32,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2056982082, now seen corresponding path program 1 times [2018-11-06 21:09:32,408 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:09:32,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:09:32,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:32,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:32,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:32,944 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-11-06 21:09:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 310 proven. 58 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 21:09:33,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:09:33,060 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:09:33,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:33,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:09:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 310 proven. 58 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 21:09:33,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:09:33,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-11-06 21:09:33,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:09:33,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:09:33,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:09:33,545 INFO L87 Difference]: Start difference. First operand 125637 states and 138432 transitions. Second operand 6 states. [2018-11-06 21:09:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:09:48,761 INFO L93 Difference]: Finished difference Result 323472 states and 355373 transitions. [2018-11-06 21:09:48,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:09:48,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 422 [2018-11-06 21:09:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:09:48,979 INFO L225 Difference]: With dead ends: 323472 [2018-11-06 21:09:48,979 INFO L226 Difference]: Without dead ends: 196330 [2018-11-06 21:09:49,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 423 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:09:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196330 states. [2018-11-06 21:09:51,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196330 to 166243. [2018-11-06 21:09:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166243 states. [2018-11-06 21:09:51,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166243 states to 166243 states and 181013 transitions. [2018-11-06 21:09:51,314 INFO L78 Accepts]: Start accepts. Automaton has 166243 states and 181013 transitions. Word has length 422 [2018-11-06 21:09:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:09:51,314 INFO L480 AbstractCegarLoop]: Abstraction has 166243 states and 181013 transitions. [2018-11-06 21:09:51,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:09:51,314 INFO L276 IsEmpty]: Start isEmpty. Operand 166243 states and 181013 transitions. [2018-11-06 21:09:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-11-06 21:09:51,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:09:51,325 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:09:51,325 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:09:51,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:09:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash -322583633, now seen corresponding path program 1 times [2018-11-06 21:09:51,326 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:09:51,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:09:51,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:51,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:51,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:52,058 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-11-06 21:09:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 311 proven. 143 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-06 21:09:52,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:09:52,525 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:09:52,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:52,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:09:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 399 proven. 55 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-06 21:09:53,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:09:53,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-11-06 21:09:53,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 21:09:53,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 21:09:53,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-06 21:09:53,415 INFO L87 Difference]: Start difference. First operand 166243 states and 181013 transitions. Second operand 10 states. [2018-11-06 21:10:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:17,325 INFO L93 Difference]: Finished difference Result 349780 states and 381190 transitions. [2018-11-06 21:10:17,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 21:10:17,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 449 [2018-11-06 21:10:17,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:17,582 INFO L225 Difference]: With dead ends: 349780 [2018-11-06 21:10:17,582 INFO L226 Difference]: Without dead ends: 176762 [2018-11-06 21:10:17,667 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 446 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-11-06 21:10:17,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176762 states. [2018-11-06 21:10:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176762 to 166986. [2018-11-06 21:10:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166986 states. [2018-11-06 21:10:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166986 states to 166986 states and 180669 transitions. [2018-11-06 21:10:20,421 INFO L78 Accepts]: Start accepts. Automaton has 166986 states and 180669 transitions. Word has length 449 [2018-11-06 21:10:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:20,421 INFO L480 AbstractCegarLoop]: Abstraction has 166986 states and 180669 transitions. [2018-11-06 21:10:20,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 21:10:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 166986 states and 180669 transitions. [2018-11-06 21:10:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-11-06 21:10:20,430 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:20,430 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:10:20,431 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:20,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:20,431 INFO L82 PathProgramCache]: Analyzing trace with hash -382110508, now seen corresponding path program 1 times [2018-11-06 21:10:20,431 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:20,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:20,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:20,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:20,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 21:10:20,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:10:20,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:10:20,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:10:20,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:10:20,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:10:20,837 INFO L87 Difference]: Start difference. First operand 166986 states and 180669 transitions. Second operand 4 states. [2018-11-06 21:10:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:29,179 INFO L93 Difference]: Finished difference Result 346002 states and 374537 transitions. [2018-11-06 21:10:29,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:10:29,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 463 [2018-11-06 21:10:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:29,383 INFO L225 Difference]: With dead ends: 346002 [2018-11-06 21:10:29,383 INFO L226 Difference]: Without dead ends: 179770 [2018-11-06 21:10:29,457 INFO L604 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 [2018-11-06 21:10:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179770 states. [2018-11-06 21:10:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179770 to 179770. [2018-11-06 21:10:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179770 states. [2018-11-06 21:10:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179770 states to 179770 states and 192043 transitions. [2018-11-06 21:10:31,999 INFO L78 Accepts]: Start accepts. Automaton has 179770 states and 192043 transitions. Word has length 463 [2018-11-06 21:10:31,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:32,000 INFO L480 AbstractCegarLoop]: Abstraction has 179770 states and 192043 transitions. [2018-11-06 21:10:32,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:10:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 179770 states and 192043 transitions. [2018-11-06 21:10:32,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-11-06 21:10:32,014 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:32,015 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:10:32,015 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:32,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:32,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1020320554, now seen corresponding path program 1 times [2018-11-06 21:10:32,015 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:32,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:32,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:32,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:32,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 21:10:32,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:10:32,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:10:32,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:10:32,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:10:32,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:10:32,560 INFO L87 Difference]: Start difference. First operand 179770 states and 192043 transitions. Second operand 4 states. [2018-11-06 21:10:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:39,752 INFO L93 Difference]: Finished difference Result 358786 states and 383327 transitions. [2018-11-06 21:10:39,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:10:39,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 492 [2018-11-06 21:10:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:39,960 INFO L225 Difference]: With dead ends: 358786 [2018-11-06 21:10:39,960 INFO L226 Difference]: Without dead ends: 179017 [2018-11-06 21:10:40,048 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:10:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179017 states. [2018-11-06 21:10:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179017 to 176761. [2018-11-06 21:10:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176761 states. [2018-11-06 21:10:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176761 states to 176761 states and 187136 transitions. [2018-11-06 21:10:45,991 INFO L78 Accepts]: Start accepts. Automaton has 176761 states and 187136 transitions. Word has length 492 [2018-11-06 21:10:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:45,992 INFO L480 AbstractCegarLoop]: Abstraction has 176761 states and 187136 transitions. [2018-11-06 21:10:45,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:10:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 176761 states and 187136 transitions. [2018-11-06 21:10:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-11-06 21:10:46,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:46,001 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:10:46,002 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:46,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:46,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1700244961, now seen corresponding path program 1 times [2018-11-06 21:10:46,002 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:46,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:46,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:46,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:46,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2018-11-06 21:10:46,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:10:46,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:10:46,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:10:46,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:10:46,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:10:46,566 INFO L87 Difference]: Start difference. First operand 176761 states and 187136 transitions. Second operand 5 states. [2018-11-06 21:10:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:57,036 INFO L93 Difference]: Finished difference Result 485132 states and 513325 transitions. [2018-11-06 21:10:57,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:10:57,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 497 [2018-11-06 21:10:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:57,381 INFO L225 Difference]: With dead ends: 485132 [2018-11-06 21:10:57,381 INFO L226 Difference]: Without dead ends: 309125 [2018-11-06 21:10:57,464 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:10:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309125 states. [2018-11-06 21:11:00,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309125 to 244451. [2018-11-06 21:11:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244451 states. [2018-11-06 21:11:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244451 states to 244451 states and 255830 transitions. [2018-11-06 21:11:00,710 INFO L78 Accepts]: Start accepts. Automaton has 244451 states and 255830 transitions. Word has length 497 [2018-11-06 21:11:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:00,710 INFO L480 AbstractCegarLoop]: Abstraction has 244451 states and 255830 transitions. [2018-11-06 21:11:00,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:11:00,710 INFO L276 IsEmpty]: Start isEmpty. Operand 244451 states and 255830 transitions. [2018-11-06 21:11:00,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-11-06 21:11:00,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:00,718 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:11:00,719 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:00,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:00,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1051512501, now seen corresponding path program 1 times [2018-11-06 21:11:00,719 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:00,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:00,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:00,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:00,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2018-11-06 21:11:01,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:01,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:11:01,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:11:01,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:11:01,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:11:01,186 INFO L87 Difference]: Start difference. First operand 244451 states and 255830 transitions. Second operand 4 states. [2018-11-06 21:11:09,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:09,685 INFO L93 Difference]: Finished difference Result 525752 states and 551043 transitions. [2018-11-06 21:11:09,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:11:09,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 518 [2018-11-06 21:11:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:10,024 INFO L225 Difference]: With dead ends: 525752 [2018-11-06 21:11:10,024 INFO L226 Difference]: Without dead ends: 282055 [2018-11-06 21:11:10,160 INFO L604 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 [2018-11-06 21:11:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282055 states. [2018-11-06 21:11:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282055 to 250466. [2018-11-06 21:11:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250466 states. [2018-11-06 21:11:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250466 states to 250466 states and 260313 transitions. [2018-11-06 21:11:13,468 INFO L78 Accepts]: Start accepts. Automaton has 250466 states and 260313 transitions. Word has length 518 [2018-11-06 21:11:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:13,468 INFO L480 AbstractCegarLoop]: Abstraction has 250466 states and 260313 transitions. [2018-11-06 21:11:13,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:11:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 250466 states and 260313 transitions. [2018-11-06 21:11:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-11-06 21:11:13,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:13,474 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:11:13,475 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:13,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:13,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2133234042, now seen corresponding path program 1 times [2018-11-06 21:11:13,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:13,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:13,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:13,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:13,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 21:11:15,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:15,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:11:15,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:11:15,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:11:15,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:11:15,237 INFO L87 Difference]: Start difference. First operand 250466 states and 260313 transitions. Second operand 4 states. [2018-11-06 21:11:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:23,591 INFO L93 Difference]: Finished difference Result 497919 states and 517596 transitions. [2018-11-06 21:11:23,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:11:23,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 524 [2018-11-06 21:11:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:23,855 INFO L225 Difference]: With dead ends: 497919 [2018-11-06 21:11:23,856 INFO L226 Difference]: Without dead ends: 212823 [2018-11-06 21:11:23,943 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:11:24,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212823 states. Received shutdown request... [2018-11-06 21:11:24,821 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:11:24,825 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:11:24,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:11:24 BoogieIcfgContainer [2018-11-06 21:11:24,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:11:24,826 INFO L168 Benchmark]: Toolchain (without parser) took 222218.74 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 1.3 GB in the end (delta: 103.3 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-06 21:11:24,827 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:11:24,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2200.53 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-06 21:11:24,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 651.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -962.2 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:11:24,830 INFO L168 Benchmark]: Boogie Preprocessor took 325.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. [2018-11-06 21:11:24,831 INFO L168 Benchmark]: RCFGBuilder took 8548.50 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 242.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -218.6 MB). Peak memory consumption was 645.1 MB. Max. memory is 7.1 GB. [2018-11-06 21:11:24,832 INFO L168 Benchmark]: TraceAbstraction took 210487.35 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-06 21:11:24,837 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2200.53 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 651.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -962.2 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 325.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8548.50 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 242.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -218.6 MB). Peak memory consumption was 645.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210487.35 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 16 OverallIterations, 5 TraceHistogramMax, 171.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10571 SDtfs, 46940 SDslu, 1462 SDs, 0 SdLazy, 90242 SolverSat, 16542 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 127.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1403 GetRequests, 1332 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250466occurred in iteration=15, 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: 26.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 173818 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 7301 NumberOfCodeBlocks, 7301 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 7281 ConstructedInterpolants, 0 QuantifiedInterpolants, 8367946 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1694 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 7784/8107 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown