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_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:11:00,634 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:11:00,637 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:11:00,654 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:11:00,654 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:11:00,655 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:11:00,657 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:11:00,660 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:11:00,663 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:11:00,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:11:00,673 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:11:00,673 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:11:00,674 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:11:00,678 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:11:00,679 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:11:00,680 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:11:00,681 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:11:00,683 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:11:00,686 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:11:00,688 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:11:00,693 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:11:00,696 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:11:00,699 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:11:00,699 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:11:00,699 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:11:00,700 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:11:00,700 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:11:00,701 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:11:00,702 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:11:00,706 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:11:00,707 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:11:00,707 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:11:00,708 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:11:00,708 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:11:00,711 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:11:00,711 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:11:00,712 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 [2018-10-24 16:11:00,726 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:11:00,727 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:11:00,728 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:11:00,728 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:11:00,728 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:11:00,728 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:11:00,729 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:11:00,729 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:11:00,729 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:11:00,729 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:11:00,729 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:11:00,730 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:11:00,730 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:11:00,730 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:11:00,730 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:11:00,730 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:11:00,731 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:11:00,731 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:11:00,731 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:11:00,731 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:11:00,731 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:11:00,731 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:11:00,732 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:11:00,732 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:11:00,732 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:11:00,732 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:11:00,732 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:11:00,733 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:11:00,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:11:00,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:11:00,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:11:00,803 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:11:00,803 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:11:00,804 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14_true-unreach-call.c [2018-10-24 16:11:00,868 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8fa52b0e/968b15a633274905949bd709dde9c784/FLAGe915f1004 [2018-10-24 16:11:01,681 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:11:01,682 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label14_true-unreach-call.c [2018-10-24 16:11:01,715 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8fa52b0e/968b15a633274905949bd709dde9c784/FLAGe915f1004 [2018-10-24 16:11:01,739 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8fa52b0e/968b15a633274905949bd709dde9c784 [2018-10-24 16:11:01,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:11:01,754 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:11:01,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:11:01,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:11:01,762 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:11:01,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:11:01" (1/1) ... [2018-10-24 16:11:01,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:01, skipping insertion in model container [2018-10-24 16:11:01,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:11:01" (1/1) ... [2018-10-24 16:11:01,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:11:01,945 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:11:03,406 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:11:03,412 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:11:04,034 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:11:04,067 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:11:04,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04 WrapperNode [2018-10-24 16:11:04,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:11:04,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:11:04,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:11:04,069 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:11:04,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (1/1) ... [2018-10-24 16:11:04,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (1/1) ... [2018-10-24 16:11:04,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:11:04,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:11:04,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:11:04,707 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:11:04,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (1/1) ... [2018-10-24 16:11:04,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (1/1) ... [2018-10-24 16:11:04,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (1/1) ... [2018-10-24 16:11:04,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (1/1) ... [2018-10-24 16:11:04,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (1/1) ... [2018-10-24 16:11:04,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (1/1) ... [2018-10-24 16:11:04,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (1/1) ... [2018-10-24 16:11:05,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:11:05,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:11:05,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:11:05,035 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:11:05,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (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 [2018-10-24 16:11:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:11:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:11:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:11:14,163 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:11:14,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:11:14 BoogieIcfgContainer [2018-10-24 16:11:14,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:11:14,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:11:14,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:11:14,169 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:11:14,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:11:01" (1/3) ... [2018-10-24 16:11:14,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3490728e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:11:14, skipping insertion in model container [2018-10-24 16:11:14,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:11:04" (2/3) ... [2018-10-24 16:11:14,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3490728e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:11:14, skipping insertion in model container [2018-10-24 16:11:14,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:11:14" (3/3) ... [2018-10-24 16:11:14,173 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label14_true-unreach-call.c [2018-10-24 16:11:14,183 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:11:14,193 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:11:14,211 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:11:14,265 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:11:14,266 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:11:14,266 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:11:14,266 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:11:14,267 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:11:14,267 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:11:14,267 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:11:14,267 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:11:14,267 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:11:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:11:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 16:11:14,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:14,320 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:11:14,324 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:14,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash 55000978, now seen corresponding path program 1 times [2018-10-24 16:11:14,333 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:14,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:14,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:14,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:14,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:11:14,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:14,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:11:14,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:11:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:11:14,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:14,821 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 16:11:27,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:27,301 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 16:11:27,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:11:27,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-24 16:11:27,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:27,348 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 16:11:27,348 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 16:11:27,356 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 [2018-10-24 16:11:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 16:11:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 16:11:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 16:11:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4222 transitions. [2018-10-24 16:11:27,519 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4222 transitions. Word has length 49 [2018-10-24 16:11:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:27,520 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4222 transitions. [2018-10-24 16:11:27,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:11:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4222 transitions. [2018-10-24 16:11:27,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 16:11:27,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:27,526 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:11:27,526 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:27,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:27,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1659787571, now seen corresponding path program 1 times [2018-10-24 16:11:27,527 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:27,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:27,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:27,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:27,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:28,266 WARN L179 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-24 16:11:28,506 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-24 16:11:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:11:28,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:28,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:11:28,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:11:28,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:11:28,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:11:28,583 INFO L87 Difference]: Start difference. First operand 2320 states and 4222 transitions. Second operand 7 states. [2018-10-24 16:11:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:46,983 INFO L93 Difference]: Finished difference Result 9904 states and 17611 transitions. [2018-10-24 16:11:46,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:11:46,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2018-10-24 16:11:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:47,033 INFO L225 Difference]: With dead ends: 9904 [2018-10-24 16:11:47,033 INFO L226 Difference]: Without dead ends: 7586 [2018-10-24 16:11:47,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:11:47,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2018-10-24 16:11:47,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 6080. [2018-10-24 16:11:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2018-10-24 16:11:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9384 transitions. [2018-10-24 16:11:47,181 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9384 transitions. Word has length 115 [2018-10-24 16:11:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:47,183 INFO L481 AbstractCegarLoop]: Abstraction has 6080 states and 9384 transitions. [2018-10-24 16:11:47,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:11:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9384 transitions. [2018-10-24 16:11:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-24 16:11:47,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:47,199 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, 2, 2, 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] [2018-10-24 16:11:47,199 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:47,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:47,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1677829945, now seen corresponding path program 1 times [2018-10-24 16:11:47,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:47,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:47,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:47,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:47,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:47,738 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 16:11:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 147 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-24 16:11:47,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:11:47,854 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 [2018-10-24 16:11:47,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:47,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:11:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:11:48,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:11:48,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:11:48,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:11:48,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:11:48,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:11:48,189 INFO L87 Difference]: Start difference. First operand 6080 states and 9384 transitions. Second operand 7 states. [2018-10-24 16:12:10,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:10,590 INFO L93 Difference]: Finished difference Result 35502 states and 56959 transitions. [2018-10-24 16:12:10,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:12:10,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2018-10-24 16:12:10,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:10,686 INFO L225 Difference]: With dead ends: 35502 [2018-10-24 16:12:10,687 INFO L226 Difference]: Without dead ends: 27165 [2018-10-24 16:12:10,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:12:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27165 states. [2018-10-24 16:12:11,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27165 to 15103. [2018-10-24 16:12:11,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15103 states. [2018-10-24 16:12:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15103 states to 15103 states and 19695 transitions. [2018-10-24 16:12:11,123 INFO L78 Accepts]: Start accepts. Automaton has 15103 states and 19695 transitions. Word has length 212 [2018-10-24 16:12:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:11,124 INFO L481 AbstractCegarLoop]: Abstraction has 15103 states and 19695 transitions. [2018-10-24 16:12:11,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:12:11,124 INFO L276 IsEmpty]: Start isEmpty. Operand 15103 states and 19695 transitions. [2018-10-24 16:12:11,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-24 16:12:11,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:11,136 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:12:11,136 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:11,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:11,137 INFO L82 PathProgramCache]: Analyzing trace with hash -438245368, now seen corresponding path program 1 times [2018-10-24 16:12:11,137 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:11,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:11,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:11,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:11,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 93 proven. 69 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-24 16:12:11,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:12:11,713 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 [2018-10-24 16:12:11,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:11,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:12:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-24 16:12:12,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:12:12,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 16:12:12,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:12:12,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:12:12,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:12:12,034 INFO L87 Difference]: Start difference. First operand 15103 states and 19695 transitions. Second operand 5 states. [2018-10-24 16:12:22,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:22,234 INFO L93 Difference]: Finished difference Result 65548 states and 86608 transitions. [2018-10-24 16:12:22,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:12:22,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2018-10-24 16:12:22,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:22,362 INFO L225 Difference]: With dead ends: 65548 [2018-10-24 16:12:22,362 INFO L226 Difference]: Without dead ends: 50447 [2018-10-24 16:12:22,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:12:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50447 states. [2018-10-24 16:12:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50447 to 50447. [2018-10-24 16:12:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50447 states. [2018-10-24 16:12:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50447 states to 50447 states and 59452 transitions. [2018-10-24 16:12:23,090 INFO L78 Accepts]: Start accepts. Automaton has 50447 states and 59452 transitions. Word has length 314 [2018-10-24 16:12:23,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:23,091 INFO L481 AbstractCegarLoop]: Abstraction has 50447 states and 59452 transitions. [2018-10-24 16:12:23,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:12:23,091 INFO L276 IsEmpty]: Start isEmpty. Operand 50447 states and 59452 transitions. [2018-10-24 16:12:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-10-24 16:12:23,114 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:23,114 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:23,115 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:23,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:23,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1221066105, now seen corresponding path program 1 times [2018-10-24 16:12:23,115 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:23,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:23,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:23,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:23,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 502 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 16:12:24,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:12:24,009 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 [2018-10-24 16:12:24,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:24,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:12:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 492 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-24 16:12:24,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:12:24,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:12:24,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:12:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:12:24,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:12:24,379 INFO L87 Difference]: Start difference. First operand 50447 states and 59452 transitions. Second operand 5 states. [2018-10-24 16:12:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:38,810 INFO L93 Difference]: Finished difference Result 131724 states and 156945 transitions. [2018-10-24 16:12:38,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:12:38,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2018-10-24 16:12:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:38,911 INFO L225 Difference]: With dead ends: 131724 [2018-10-24 16:12:38,911 INFO L226 Difference]: Without dead ends: 81279 [2018-10-24 16:12:38,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 426 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:12:39,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81279 states. [2018-10-24 16:12:39,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81279 to 81279. [2018-10-24 16:12:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81279 states. [2018-10-24 16:12:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81279 states to 81279 states and 91895 transitions. [2018-10-24 16:12:39,758 INFO L78 Accepts]: Start accepts. Automaton has 81279 states and 91895 transitions. Word has length 424 [2018-10-24 16:12:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:39,759 INFO L481 AbstractCegarLoop]: Abstraction has 81279 states and 91895 transitions. [2018-10-24 16:12:39,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:12:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 81279 states and 91895 transitions. [2018-10-24 16:12:39,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-10-24 16:12:39,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:39,783 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:12:39,783 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:39,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:39,784 INFO L82 PathProgramCache]: Analyzing trace with hash 249725563, now seen corresponding path program 1 times [2018-10-24 16:12:39,784 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:39,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:39,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:39,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:39,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 16:12:40,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:40,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:40,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:40,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:40,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:40,404 INFO L87 Difference]: Start difference. First operand 81279 states and 91895 transitions. Second operand 4 states. [2018-10-24 16:12:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:49,810 INFO L93 Difference]: Finished difference Result 194892 states and 219230 transitions. [2018-10-24 16:12:49,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:49,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 436 [2018-10-24 16:12:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:49,957 INFO L225 Difference]: With dead ends: 194892 [2018-10-24 16:12:49,957 INFO L226 Difference]: Without dead ends: 111357 [2018-10-24 16:12:50,015 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 [2018-10-24 16:12:50,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111357 states. [2018-10-24 16:12:50,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111357 to 111357. [2018-10-24 16:12:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111357 states. [2018-10-24 16:12:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111357 states to 111357 states and 120688 transitions. [2018-10-24 16:12:50,923 INFO L78 Accepts]: Start accepts. Automaton has 111357 states and 120688 transitions. Word has length 436 [2018-10-24 16:12:50,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:50,923 INFO L481 AbstractCegarLoop]: Abstraction has 111357 states and 120688 transitions. [2018-10-24 16:12:50,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 111357 states and 120688 transitions. [2018-10-24 16:12:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-10-24 16:12:50,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:50,948 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:50,948 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:50,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:50,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1982035469, now seen corresponding path program 1 times [2018-10-24 16:12:50,948 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:50,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:50,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:50,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:50,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2018-10-24 16:12:51,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:51,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:51,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:51,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:51,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:51,467 INFO L87 Difference]: Start difference. First operand 111357 states and 120688 transitions. Second operand 4 states. [2018-10-24 16:13:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:00,032 INFO L93 Difference]: Finished difference Result 237000 states and 257014 transitions. [2018-10-24 16:13:00,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:13:00,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 452 [2018-10-24 16:13:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:00,191 INFO L225 Difference]: With dead ends: 237000 [2018-10-24 16:13:00,192 INFO L226 Difference]: Without dead ends: 126397 [2018-10-24 16:13:00,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126397 states. [2018-10-24 16:13:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126397 to 124893. [2018-10-24 16:13:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124893 states. [2018-10-24 16:13:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124893 states to 124893 states and 133760 transitions. [2018-10-24 16:13:01,224 INFO L78 Accepts]: Start accepts. Automaton has 124893 states and 133760 transitions. Word has length 452 [2018-10-24 16:13:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:01,224 INFO L481 AbstractCegarLoop]: Abstraction has 124893 states and 133760 transitions. [2018-10-24 16:13:01,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:13:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 124893 states and 133760 transitions. [2018-10-24 16:13:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-10-24 16:13:01,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:01,241 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:01,241 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:01,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:01,241 INFO L82 PathProgramCache]: Analyzing trace with hash 787801582, now seen corresponding path program 1 times [2018-10-24 16:13:01,242 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:01,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:01,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:01,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:01,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:13:01,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:01,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:13:01,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:13:01,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:13:01,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:13:01,873 INFO L87 Difference]: Start difference. First operand 124893 states and 133760 transitions. Second operand 6 states. [2018-10-24 16:13:14,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:14,744 INFO L93 Difference]: Finished difference Result 280140 states and 298227 transitions. [2018-10-24 16:13:14,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:13:14,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 482 [2018-10-24 16:13:14,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:14,966 INFO L225 Difference]: With dead ends: 280140 [2018-10-24 16:13:14,966 INFO L226 Difference]: Without dead ends: 156001 [2018-10-24 16:13:15,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:13:15,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156001 states. [2018-10-24 16:13:16,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156001 to 122637. [2018-10-24 16:13:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122637 states. [2018-10-24 16:13:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122637 states to 122637 states and 129651 transitions. [2018-10-24 16:13:16,388 INFO L78 Accepts]: Start accepts. Automaton has 122637 states and 129651 transitions. Word has length 482 [2018-10-24 16:13:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:16,389 INFO L481 AbstractCegarLoop]: Abstraction has 122637 states and 129651 transitions. [2018-10-24 16:13:16,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:13:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 122637 states and 129651 transitions. [2018-10-24 16:13:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-10-24 16:13:16,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:16,403 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:16,403 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:16,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:16,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1132872035, now seen corresponding path program 1 times [2018-10-24 16:13:16,403 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:16,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:16,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:16,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:16,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2018-10-24 16:13:17,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:17,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:13:17,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:13:17,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:13:17,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:13:17,586 INFO L87 Difference]: Start difference. First operand 122637 states and 129651 transitions. Second operand 5 states. [2018-10-24 16:13:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:28,159 INFO L93 Difference]: Finished difference Result 351334 states and 371981 transitions. [2018-10-24 16:13:28,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:13:28,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2018-10-24 16:13:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:28,416 INFO L225 Difference]: With dead ends: 351334 [2018-10-24 16:13:28,417 INFO L226 Difference]: Without dead ends: 229451 [2018-10-24 16:13:28,507 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 [2018-10-24 16:13:28,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229451 states. [2018-10-24 16:13:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229451 to 187339. [2018-10-24 16:13:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187339 states. [2018-10-24 16:13:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187339 states to 187339 states and 196160 transitions. [2018-10-24 16:13:31,081 INFO L78 Accepts]: Start accepts. Automaton has 187339 states and 196160 transitions. Word has length 493 [2018-10-24 16:13:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:31,082 INFO L481 AbstractCegarLoop]: Abstraction has 187339 states and 196160 transitions. [2018-10-24 16:13:31,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:13:31,082 INFO L276 IsEmpty]: Start isEmpty. Operand 187339 states and 196160 transitions. [2018-10-24 16:13:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2018-10-24 16:13:31,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:31,218 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:31,218 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:31,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:31,219 INFO L82 PathProgramCache]: Analyzing trace with hash -932520150, now seen corresponding path program 1 times [2018-10-24 16:13:31,219 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:31,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:31,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:31,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:31,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:32,332 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-24 16:13:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 262 proven. 343 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-10-24 16:13:34,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:13:34,498 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 [2018-10-24 16:13:34,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:34,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:13:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 229 proven. 376 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-10-24 16:13:37,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:13:37,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-10-24 16:13:37,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:13:37,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:13:37,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:13:37,675 INFO L87 Difference]: Start difference. First operand 187339 states and 196160 transitions. Second operand 8 states. [2018-10-24 16:13:56,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:56,201 INFO L93 Difference]: Finished difference Result 421299 states and 441271 transitions. [2018-10-24 16:13:56,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:13:56,206 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1064 [2018-10-24 16:13:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:56,496 INFO L225 Difference]: With dead ends: 421299 [2018-10-24 16:13:56,496 INFO L226 Difference]: Without dead ends: 231704 [2018-10-24 16:13:56,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1075 GetRequests, 1063 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:13:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231704 states. [2018-10-24 16:13:59,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231704 to 215160. [2018-10-24 16:13:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215160 states. [2018-10-24 16:13:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215160 states to 215160 states and 224786 transitions. [2018-10-24 16:13:59,515 INFO L78 Accepts]: Start accepts. Automaton has 215160 states and 224786 transitions. Word has length 1064 [2018-10-24 16:13:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:59,516 INFO L481 AbstractCegarLoop]: Abstraction has 215160 states and 224786 transitions. [2018-10-24 16:13:59,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:13:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 215160 states and 224786 transitions. [2018-10-24 16:13:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2018-10-24 16:13:59,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:59,672 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:59,673 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:59,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:59,674 INFO L82 PathProgramCache]: Analyzing trace with hash -285665480, now seen corresponding path program 1 times [2018-10-24 16:13:59,674 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:59,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:59,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:59,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:59,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:00,790 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:14:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 812 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-24 16:14:02,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:02,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:14:02,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:14:02,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:14:02,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:02,673 INFO L87 Difference]: Start difference. First operand 215160 states and 224786 transitions. Second operand 4 states. [2018-10-24 16:14:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:13,997 INFO L93 Difference]: Finished difference Result 432569 states and 451935 transitions. [2018-10-24 16:14:13,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:14:13,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1308 [2018-10-24 16:14:13,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:14,257 INFO L225 Difference]: With dead ends: 432569 [2018-10-24 16:14:14,258 INFO L226 Difference]: Without dead ends: 218163 [2018-10-24 16:14:14,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:14,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218163 states. [2018-10-24 16:14:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218163 to 212899. [2018-10-24 16:14:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212899 states. [2018-10-24 16:14:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212899 states to 212899 states and 221771 transitions. [2018-10-24 16:14:16,990 INFO L78 Accepts]: Start accepts. Automaton has 212899 states and 221771 transitions. Word has length 1308 [2018-10-24 16:14:16,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:16,991 INFO L481 AbstractCegarLoop]: Abstraction has 212899 states and 221771 transitions. [2018-10-24 16:14:16,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:14:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand 212899 states and 221771 transitions. [2018-10-24 16:14:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2018-10-24 16:14:17,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:17,138 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:14:17,139 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:17,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:17,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1723415744, now seen corresponding path program 1 times [2018-10-24 16:14:17,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:17,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:17,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:17,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:17,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:18,594 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 16:14:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 909 proven. 48 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-10-24 16:14:25,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:14:25,945 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:14:25,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:26,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:14:40,908 WARN L179 SmtUtils]: Spent 14.33 s on a formula simplification. DAG size of input: 145 DAG size of output: 46 [2018-10-24 16:14:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 957 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-10-24 16:14:43,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:14:43,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2018-10-24 16:14:43,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:14:43,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:14:43,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:14:43,424 INFO L87 Difference]: Start difference. First operand 212899 states and 221771 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 16:14:48,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:14:48,224 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:14:48,229 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:14:48,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:14:48 BoogieIcfgContainer [2018-10-24 16:14:48,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:14:48,230 INFO L168 Benchmark]: Toolchain (without parser) took 226478.00 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 16:14:48,231 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-24 16:14:48,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2311.52 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. [2018-10-24 16:14:48,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 638.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -973.3 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:48,233 INFO L168 Benchmark]: Boogie Preprocessor took 327.52 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: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:48,234 INFO L168 Benchmark]: RCFGBuilder took 9130.16 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 224.4 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -169.1 MB). Peak memory consumption was 620.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:48,235 INFO L168 Benchmark]: TraceAbstraction took 214063.70 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -245.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 16:14:48,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2311.52 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 638.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -973.3 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 327.52 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: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9130.16 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 224.4 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -169.1 MB). Peak memory consumption was 620.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214063.70 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -245.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was constructing difference of abstraction (212899states) and FLOYD_HOARE automaton (currently 5 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (2978 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 213.9s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 156.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5795 SDtfs, 38491 SDslu, 1586 SDs, 0 SdLazy, 77383 SolverSat, 15397 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 125.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3542 GetRequests, 3478 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215160occurred in iteration=10, 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: 13.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 112356 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 28.1s InterpolantComputationTime, 10269 NumberOfCodeBlocks, 10269 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 10252 ConstructedInterpolants, 49 QuantifiedInterpolants, 45507714 SizeOfPredicates, 7 NumberOfNonLiveVariables, 4147 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 10220/11066 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown