java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label21_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:06:00,668 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:06:00,672 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:06:00,692 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:06:00,692 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:06:00,693 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:06:00,695 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:06:00,696 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:06:00,698 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:06:00,699 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:06:00,700 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:06:00,700 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:06:00,701 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:06:00,702 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:06:00,704 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:06:00,704 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:06:00,709 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:06:00,712 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:06:00,716 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:06:00,717 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:06:00,720 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:06:00,724 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:06:00,726 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:06:00,726 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:06:00,727 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:06:00,728 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:06:00,729 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:06:00,733 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:06:00,734 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:06:00,735 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:06:00,735 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:06:00,738 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 19:06:00,738 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 19:06:00,738 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 19:06:00,741 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 19:06:00,741 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 19:06:00,742 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:06:00,768 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:06:00,769 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:06:00,770 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:06:00,770 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:06:00,770 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:06:00,773 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:06:00,773 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:06:00,774 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:06:00,774 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:06:00,774 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:06:00,774 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:06:00,775 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:06:00,775 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:06:00,775 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:06:00,775 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:06:00,775 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:06:00,776 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:06:00,776 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:06:00,777 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:06:00,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:06:00,777 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:06:00,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:06:00,777 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:06:00,778 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:06:00,778 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:06:00,779 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:06:00,779 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:06:00,779 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:06:00,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:06:00,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:06:00,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:06:00,857 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:06:00,857 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:06:00,858 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label21_false-unreach-call.c [2018-10-26 19:06:00,932 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/720431682/e4b17caae43b40c98608fad0c93e046e/FLAG2253d6c00 [2018-10-26 19:06:01,654 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:06:01,655 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label21_false-unreach-call.c [2018-10-26 19:06:01,685 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/720431682/e4b17caae43b40c98608fad0c93e046e/FLAG2253d6c00 [2018-10-26 19:06:01,702 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/720431682/e4b17caae43b40c98608fad0c93e046e [2018-10-26 19:06:01,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:06:01,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:06:01,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:06:01,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:06:01,721 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:06:01,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:06:01" (1/1) ... [2018-10-26 19:06:01,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d4e6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:01, skipping insertion in model container [2018-10-26 19:06:01,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:06:01" (1/1) ... [2018-10-26 19:06:01,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:06:01,902 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:06:03,250 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:06:03,256 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:06:03,932 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:06:03,969 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:06:03,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03 WrapperNode [2018-10-26 19:06:03,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:06:03,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:06:03,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:06:03,972 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:06:03,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... [2018-10-26 19:06:04,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... [2018-10-26 19:06:04,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:06:04,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:06:04,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:06:04,646 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:06:04,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... [2018-10-26 19:06:04,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... [2018-10-26 19:06:04,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... [2018-10-26 19:06:04,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... [2018-10-26 19:06:04,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... [2018-10-26 19:06:04,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... [2018-10-26 19:06:04,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... [2018-10-26 19:06:04,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:06:04,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:06:04,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:06:04,983 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:06:04,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:06:05,055 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:06:05,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:06:05,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:06:14,434 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:06:14,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:06:14 BoogieIcfgContainer [2018-10-26 19:06:14,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:06:14,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:06:14,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:06:14,441 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:06:14,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:06:01" (1/3) ... [2018-10-26 19:06:14,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:06:14, skipping insertion in model container [2018-10-26 19:06:14,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:06:03" (2/3) ... [2018-10-26 19:06:14,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:06:14, skipping insertion in model container [2018-10-26 19:06:14,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:06:14" (3/3) ... [2018-10-26 19:06:14,447 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label21_false-unreach-call.c [2018-10-26 19:06:14,458 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:06:14,474 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:06:14,488 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:06:14,534 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:06:14,534 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:06:14,534 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:06:14,534 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:06:14,535 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:06:14,535 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:06:14,535 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:06:14,535 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:06:14,535 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:06:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 19:06:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 19:06:14,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:14,592 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] [2018-10-26 19:06:14,596 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:14,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:14,602 INFO L82 PathProgramCache]: Analyzing trace with hash -314381782, now seen corresponding path program 1 times [2018-10-26 19:06:14,604 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:14,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:14,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:14,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:14,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:15,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:15,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:06:15,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:06:15,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:06:15,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:15,023 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 19:06:30,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:30,499 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 19:06:30,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:06:30,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-26 19:06:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:30,541 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 19:06:30,542 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 19:06:30,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:06:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 19:06:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 19:06:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 19:06:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-26 19:06:30,707 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 23 [2018-10-26 19:06:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:30,708 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-26 19:06:30,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:06:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-26 19:06:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-26 19:06:30,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:30,716 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:06:30,717 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:30,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:30,717 INFO L82 PathProgramCache]: Analyzing trace with hash -595425670, now seen corresponding path program 1 times [2018-10-26 19:06:30,717 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:30,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:30,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:30,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:30,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-26 19:06:31,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:06:31,115 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:06:31,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:31,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:06:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:06:31,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:06:31,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 19:06:31,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:06:31,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:06:31,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:06:31,363 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 5 states. [2018-10-26 19:06:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:06:52,914 INFO L93 Difference]: Finished difference Result 15934 states and 26705 transitions. [2018-10-26 19:06:52,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:06:52,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-10-26 19:06:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:06:52,980 INFO L225 Difference]: With dead ends: 15934 [2018-10-26 19:06:52,980 INFO L226 Difference]: Without dead ends: 13616 [2018-10-26 19:06:52,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:06:52,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13616 states. [2018-10-26 19:06:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13616 to 13616. [2018-10-26 19:06:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13616 states. [2018-10-26 19:06:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13616 states to 13616 states and 18154 transitions. [2018-10-26 19:06:53,237 INFO L78 Accepts]: Start accepts. Automaton has 13616 states and 18154 transitions. Word has length 95 [2018-10-26 19:06:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:06:53,239 INFO L481 AbstractCegarLoop]: Abstraction has 13616 states and 18154 transitions. [2018-10-26 19:06:53,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:06:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 13616 states and 18154 transitions. [2018-10-26 19:06:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-26 19:06:53,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:06:53,258 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:06:53,261 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:06:53,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:06:53,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1257795092, now seen corresponding path program 1 times [2018-10-26 19:06:53,262 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:06:53,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:06:53,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:53,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:06:53,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:06:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:06:53,658 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:06:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-10-26 19:06:53,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:06:53,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:06:53,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:06:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:06:53,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:06:53,807 INFO L87 Difference]: Start difference. First operand 13616 states and 18154 transitions. Second operand 6 states. [2018-10-26 19:07:07,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:07,411 INFO L93 Difference]: Finished difference Result 43022 states and 56898 transitions. [2018-10-26 19:07:07,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:07:07,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-26 19:07:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:07,502 INFO L225 Difference]: With dead ends: 43022 [2018-10-26 19:07:07,502 INFO L226 Difference]: Without dead ends: 29408 [2018-10-26 19:07:07,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:07:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2018-10-26 19:07:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 29408. [2018-10-26 19:07:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29408 states. [2018-10-26 19:07:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29408 states to 29408 states and 38078 transitions. [2018-10-26 19:07:07,993 INFO L78 Accepts]: Start accepts. Automaton has 29408 states and 38078 transitions. Word has length 171 [2018-10-26 19:07:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:07,994 INFO L481 AbstractCegarLoop]: Abstraction has 29408 states and 38078 transitions. [2018-10-26 19:07:07,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:07:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 29408 states and 38078 transitions. [2018-10-26 19:07:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-26 19:07:08,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:08,001 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:08,001 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:08,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:08,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1131822492, now seen corresponding path program 1 times [2018-10-26 19:07:08,002 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:08,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:08,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:08,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:08,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:08,508 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-26 19:07:08,709 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-26 19:07:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 211 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-26 19:07:08,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:07:08,836 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:07:08,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:08,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:07:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-10-26 19:07:09,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:07:09,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 19:07:09,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:07:09,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:07:09,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:07:09,055 INFO L87 Difference]: Start difference. First operand 29408 states and 38078 transitions. Second operand 7 states. [2018-10-26 19:07:09,436 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-26 19:07:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:27,540 INFO L93 Difference]: Finished difference Result 113738 states and 145208 transitions. [2018-10-26 19:07:27,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:07:27,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2018-10-26 19:07:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:27,696 INFO L225 Difference]: With dead ends: 113738 [2018-10-26 19:07:27,697 INFO L226 Difference]: Without dead ends: 82072 [2018-10-26 19:07:27,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:07:27,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82072 states. [2018-10-26 19:07:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82072 to 60229. [2018-10-26 19:07:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60229 states. [2018-10-26 19:07:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60229 states to 60229 states and 70905 transitions. [2018-10-26 19:07:28,636 INFO L78 Accepts]: Start accepts. Automaton has 60229 states and 70905 transitions. Word has length 243 [2018-10-26 19:07:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:28,637 INFO L481 AbstractCegarLoop]: Abstraction has 60229 states and 70905 transitions. [2018-10-26 19:07:28,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:07:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 60229 states and 70905 transitions. [2018-10-26 19:07:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-26 19:07:28,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:28,648 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:07:28,648 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:28,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:28,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1849148943, now seen corresponding path program 1 times [2018-10-26 19:07:28,648 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:28,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:28,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:28,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:28,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-26 19:07:28,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:28,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:07:28,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:07:28,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:07:28,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:07:28,959 INFO L87 Difference]: Start difference. First operand 60229 states and 70905 transitions. Second operand 3 states. [2018-10-26 19:07:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:37,228 INFO L93 Difference]: Finished difference Result 132488 states and 155995 transitions. [2018-10-26 19:07:37,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:07:37,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 325 [2018-10-26 19:07:37,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:37,330 INFO L225 Difference]: With dead ends: 132488 [2018-10-26 19:07:37,330 INFO L226 Difference]: Without dead ends: 73013 [2018-10-26 19:07:37,379 INFO L605 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 [2018-10-26 19:07:37,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73013 states. [2018-10-26 19:07:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73013 to 70757. [2018-10-26 19:07:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70757 states. [2018-10-26 19:07:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70757 states to 70757 states and 80674 transitions. [2018-10-26 19:07:38,227 INFO L78 Accepts]: Start accepts. Automaton has 70757 states and 80674 transitions. Word has length 325 [2018-10-26 19:07:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:38,228 INFO L481 AbstractCegarLoop]: Abstraction has 70757 states and 80674 transitions. [2018-10-26 19:07:38,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:07:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 70757 states and 80674 transitions. [2018-10-26 19:07:38,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-26 19:07:38,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:38,243 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:07:38,244 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:38,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:38,244 INFO L82 PathProgramCache]: Analyzing trace with hash -2033308095, now seen corresponding path program 1 times [2018-10-26 19:07:38,244 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:38,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:38,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:38,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:38,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-26 19:07:38,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:38,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:07:38,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:07:38,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:07:38,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:07:38,896 INFO L87 Difference]: Start difference. First operand 70757 states and 80674 transitions. Second operand 5 states. [2018-10-26 19:07:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:07:50,872 INFO L93 Difference]: Finished difference Result 204730 states and 233278 transitions. [2018-10-26 19:07:50,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:07:50,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 357 [2018-10-26 19:07:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:07:51,056 INFO L225 Difference]: With dead ends: 204730 [2018-10-26 19:07:51,057 INFO L226 Difference]: Without dead ends: 134727 [2018-10-26 19:07:51,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:07:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134727 states. [2018-10-26 19:07:52,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134727 to 106903. [2018-10-26 19:07:52,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106903 states. [2018-10-26 19:07:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106903 states to 106903 states and 117667 transitions. [2018-10-26 19:07:52,484 INFO L78 Accepts]: Start accepts. Automaton has 106903 states and 117667 transitions. Word has length 357 [2018-10-26 19:07:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:07:52,485 INFO L481 AbstractCegarLoop]: Abstraction has 106903 states and 117667 transitions. [2018-10-26 19:07:52,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:07:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 106903 states and 117667 transitions. [2018-10-26 19:07:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2018-10-26 19:07:52,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:07:52,577 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:07:52,578 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:07:52,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:07:52,578 INFO L82 PathProgramCache]: Analyzing trace with hash -38771310, now seen corresponding path program 1 times [2018-10-26 19:07:52,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:07:52,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:07:52,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:52,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:07:52,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:07:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:07:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-26 19:07:53,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:07:53,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:07:53,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:07:53,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:07:53,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:07:53,949 INFO L87 Difference]: Start difference. First operand 106903 states and 117667 transitions. Second operand 4 states. [2018-10-26 19:08:03,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:03,054 INFO L93 Difference]: Finished difference Result 255160 states and 282834 transitions. [2018-10-26 19:08:03,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:08:03,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 708 [2018-10-26 19:08:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:03,243 INFO L225 Difference]: With dead ends: 255160 [2018-10-26 19:08:03,243 INFO L226 Difference]: Without dead ends: 139963 [2018-10-26 19:08:03,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:08:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139963 states. [2018-10-26 19:08:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139963 to 124171. [2018-10-26 19:08:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124171 states. [2018-10-26 19:08:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124171 states to 124171 states and 134945 transitions. [2018-10-26 19:08:05,287 INFO L78 Accepts]: Start accepts. Automaton has 124171 states and 134945 transitions. Word has length 708 [2018-10-26 19:08:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:05,288 INFO L481 AbstractCegarLoop]: Abstraction has 124171 states and 134945 transitions. [2018-10-26 19:08:05,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:08:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 124171 states and 134945 transitions. [2018-10-26 19:08:05,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-10-26 19:08:05,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:05,360 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:08:05,360 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:05,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash 304312078, now seen corresponding path program 1 times [2018-10-26 19:08:05,361 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:05,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:05,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:05,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:05,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:06,282 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 19:08:06,626 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-10-26 19:08:06,857 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-10-26 19:08:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 778 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:08:07,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:08:07,676 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:08:07,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:07,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:08:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 609 proven. 174 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:08:09,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:08:09,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 9 [2018-10-26 19:08:09,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 19:08:09,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 19:08:09,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:08:09,577 INFO L87 Difference]: Start difference. First operand 124171 states and 134945 transitions. Second operand 9 states. [2018-10-26 19:08:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:32,350 INFO L93 Difference]: Finished difference Result 315259 states and 343668 transitions. [2018-10-26 19:08:32,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:08:32,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 812 [2018-10-26 19:08:32,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:32,578 INFO L225 Difference]: With dead ends: 315259 [2018-10-26 19:08:32,578 INFO L226 Difference]: Without dead ends: 184310 [2018-10-26 19:08:32,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 811 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:08:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184310 states. [2018-10-26 19:08:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184310 to 173026. [2018-10-26 19:08:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173026 states. [2018-10-26 19:08:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173026 states to 173026 states and 183844 transitions. [2018-10-26 19:08:35,215 INFO L78 Accepts]: Start accepts. Automaton has 173026 states and 183844 transitions. Word has length 812 [2018-10-26 19:08:35,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:35,216 INFO L481 AbstractCegarLoop]: Abstraction has 173026 states and 183844 transitions. [2018-10-26 19:08:35,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 19:08:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 173026 states and 183844 transitions. [2018-10-26 19:08:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2018-10-26 19:08:35,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:35,281 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:08:35,281 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:35,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:35,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1109618244, now seen corresponding path program 1 times [2018-10-26 19:08:35,282 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:35,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:35,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:35,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:35,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 1031 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-26 19:08:37,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:08:37,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:08:37,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:08:37,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:08:37,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:08:37,004 INFO L87 Difference]: Start difference. First operand 173026 states and 183844 transitions. Second operand 5 states. [2018-10-26 19:08:52,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:08:52,014 INFO L93 Difference]: Finished difference Result 437061 states and 464507 transitions. [2018-10-26 19:08:52,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:08:52,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 869 [2018-10-26 19:08:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:08:52,353 INFO L225 Difference]: With dead ends: 437061 [2018-10-26 19:08:52,353 INFO L226 Difference]: Without dead ends: 264789 [2018-10-26 19:08:52,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:08:52,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264789 states. [2018-10-26 19:08:56,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264789 to 250496. [2018-10-26 19:08:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250496 states. [2018-10-26 19:08:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250496 states to 250496 states and 265479 transitions. [2018-10-26 19:08:56,373 INFO L78 Accepts]: Start accepts. Automaton has 250496 states and 265479 transitions. Word has length 869 [2018-10-26 19:08:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:08:56,374 INFO L481 AbstractCegarLoop]: Abstraction has 250496 states and 265479 transitions. [2018-10-26 19:08:56,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:08:56,374 INFO L276 IsEmpty]: Start isEmpty. Operand 250496 states and 265479 transitions. [2018-10-26 19:08:56,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2018-10-26 19:08:56,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:08:56,429 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:08:56,429 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:08:56,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:08:56,430 INFO L82 PathProgramCache]: Analyzing trace with hash 532999506, now seen corresponding path program 1 times [2018-10-26 19:08:56,430 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:08:56,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:08:56,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:56,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:56,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:08:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:56,897 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-26 19:08:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 1074 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-26 19:08:57,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:08:57,479 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:08:57,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:08:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:08:57,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:09:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 1002 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-10-26 19:09:03,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:09:03,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-10-26 19:09:03,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:09:03,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:09:03,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:09:03,163 INFO L87 Difference]: Start difference. First operand 250496 states and 265479 transitions. Second operand 8 states. [2018-10-26 19:09:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:18,507 INFO L93 Difference]: Finished difference Result 507435 states and 539017 transitions. [2018-10-26 19:09:18,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 19:09:18,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 876 [2018-10-26 19:09:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:18,805 INFO L225 Difference]: With dead ends: 507435 [2018-10-26 19:09:18,805 INFO L226 Difference]: Without dead ends: 257693 [2018-10-26 19:09:18,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 878 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:09:19,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257693 states. [2018-10-26 19:09:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257693 to 252741. [2018-10-26 19:09:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252741 states. [2018-10-26 19:09:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252741 states to 252741 states and 264373 transitions. [2018-10-26 19:09:22,196 INFO L78 Accepts]: Start accepts. Automaton has 252741 states and 264373 transitions. Word has length 876 [2018-10-26 19:09:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:22,196 INFO L481 AbstractCegarLoop]: Abstraction has 252741 states and 264373 transitions. [2018-10-26 19:09:22,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:09:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 252741 states and 264373 transitions. [2018-10-26 19:09:22,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2018-10-26 19:09:22,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:22,245 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:09:22,245 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:22,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:22,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2101636456, now seen corresponding path program 1 times [2018-10-26 19:09:22,246 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:22,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:22,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:22,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:22,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2018-10-26 19:09:24,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:24,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:09:24,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:09:24,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:09:24,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:24,135 INFO L87 Difference]: Start difference. First operand 252741 states and 264373 transitions. Second operand 4 states. [2018-10-26 19:09:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:09:33,505 INFO L93 Difference]: Finished difference Result 541570 states and 566051 transitions. [2018-10-26 19:09:33,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:09:33,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 917 [2018-10-26 19:09:33,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:09:33,834 INFO L225 Difference]: With dead ends: 541570 [2018-10-26 19:09:33,834 INFO L226 Difference]: Without dead ends: 291088 [2018-10-26 19:09:33,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:09:34,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291088 states. [2018-10-26 19:09:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291088 to 258000. [2018-10-26 19:09:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258000 states. [2018-10-26 19:09:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258000 states to 258000 states and 269507 transitions. [2018-10-26 19:09:37,210 INFO L78 Accepts]: Start accepts. Automaton has 258000 states and 269507 transitions. Word has length 917 [2018-10-26 19:09:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:09:37,211 INFO L481 AbstractCegarLoop]: Abstraction has 258000 states and 269507 transitions. [2018-10-26 19:09:37,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:09:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 258000 states and 269507 transitions. [2018-10-26 19:09:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2018-10-26 19:09:37,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:09:37,273 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:09:37,273 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:09:37,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:09:37,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1889350481, now seen corresponding path program 1 times [2018-10-26 19:09:37,274 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:09:37,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:09:37,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:37,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:09:37,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:09:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:09:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 905 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-10-26 19:09:39,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:09:39,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:09:39,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:09:39,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:09:39,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:09:39,609 INFO L87 Difference]: Start difference. First operand 258000 states and 269507 transitions. Second operand 6 states. Received shutdown request... [2018-10-26 19:09:49,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:09:49,899 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:09:49,905 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:09:49,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:09:49 BoogieIcfgContainer [2018-10-26 19:09:49,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:09:49,906 INFO L168 Benchmark]: Toolchain (without parser) took 228192.13 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 51.9 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,907 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:09:49,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2254.70 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. [2018-10-26 19:09:49,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 674.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -957.6 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,909 INFO L168 Benchmark]: Boogie Preprocessor took 335.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,910 INFO L168 Benchmark]: RCFGBuilder took 9453.08 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 270.0 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -258.5 MB). Peak memory consumption was 673.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,911 INFO L168 Benchmark]: TraceAbstraction took 215467.40 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-26 19:09:49,917 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2254.70 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 674.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -957.6 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 335.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 38.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9453.08 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 270.0 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -258.5 MB). Peak memory consumption was 673.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215467.40 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (258000states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (141452 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 215.3s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 173.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8522 SDtfs, 36105 SDslu, 1495 SDs, 0 SdLazy, 86508 SolverSat, 17471 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 138.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2103 GetRequests, 2043 SyntacticMatches, 11 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258000occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 131332 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 8354 NumberOfCodeBlocks, 8354 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8338 ConstructedInterpolants, 0 QuantifiedInterpolants, 19288952 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2545 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 9110/9304 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown