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/Problem18_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:57:49,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:57:49,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:57:49,753 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:57:49,753 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:57:49,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:57:49,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:57:49,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:57:49,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:57:49,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:57:49,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:57:49,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:57:49,767 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:57:49,770 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:57:49,772 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:57:49,772 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:57:49,777 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:57:49,778 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:57:49,780 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:57:49,782 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:57:49,783 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:57:49,784 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:57:49,786 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:57:49,795 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 16:57:49,824 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:57:49,824 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:57:49,825 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:57:49,825 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:57:49,826 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:57:49,827 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:57:49,827 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:57:49,827 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:57:49,827 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:57:49,827 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:57:49,828 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:57:49,828 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:57:49,828 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:57:49,828 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:57:49,828 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:57:49,831 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:57:49,832 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:57:49,832 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:57:49,832 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:57:49,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:57:49,832 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:57:49,833 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:57:49,833 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:57:49,833 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:57:49,833 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:57:49,833 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:57:49,833 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:57:49,834 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:57:49,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:57:49,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:57:49,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:57:49,931 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:57:49,931 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:57:49,932 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c [2018-10-24 16:57:49,998 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d8b0a9b0f/c4c4b35f8b974ff08bb4418dee03414c/FLAG7448f3fed [2018-10-24 16:57:50,699 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:57:50,700 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c [2018-10-24 16:57:50,725 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d8b0a9b0f/c4c4b35f8b974ff08bb4418dee03414c/FLAG7448f3fed [2018-10-24 16:57:50,747 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d8b0a9b0f/c4c4b35f8b974ff08bb4418dee03414c [2018-10-24 16:57:50,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:57:50,764 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:57:50,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:57:50,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:57:50,772 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:57:50,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:57:50" (1/1) ... [2018-10-24 16:57:50,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0e990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:50, skipping insertion in model container [2018-10-24 16:57:50,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:57:50" (1/1) ... [2018-10-24 16:57:50,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:57:50,931 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:57:51,964 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:57:51,969 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:57:52,417 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:57:52,448 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:57:52,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52 WrapperNode [2018-10-24 16:57:52,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:57:52,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:57:52,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:57:52,450 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:57:52,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (1/1) ... [2018-10-24 16:57:52,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (1/1) ... [2018-10-24 16:57:52,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:57:52,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:57:52,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:57:52,925 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:57:52,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (1/1) ... [2018-10-24 16:57:52,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (1/1) ... [2018-10-24 16:57:52,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (1/1) ... [2018-10-24 16:57:52,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (1/1) ... [2018-10-24 16:57:53,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (1/1) ... [2018-10-24 16:57:53,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (1/1) ... [2018-10-24 16:57:53,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (1/1) ... [2018-10-24 16:57:53,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:57:53,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:57:53,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:57:53,230 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:57:53,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (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 16:57:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:57:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:57:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:58:01,154 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:58:01,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:58:01 BoogieIcfgContainer [2018-10-24 16:58:01,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:58:01,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:58:01,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:58:01,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:58:01,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:57:50" (1/3) ... [2018-10-24 16:58:01,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a5c1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:58:01, skipping insertion in model container [2018-10-24 16:58:01,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:57:52" (2/3) ... [2018-10-24 16:58:01,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a5c1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:58:01, skipping insertion in model container [2018-10-24 16:58:01,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:58:01" (3/3) ... [2018-10-24 16:58:01,165 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label29_true-unreach-call.c [2018-10-24 16:58:01,173 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:58:01,183 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:58:01,202 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:58:01,248 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:58:01,249 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:58:01,249 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:58:01,250 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:58:01,250 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:58:01,250 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:58:01,250 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:58:01,250 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:58:01,250 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:58:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-24 16:58:01,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 16:58:01,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:58:01,296 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] [2018-10-24 16:58:01,298 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:58:01,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:58:01,305 INFO L82 PathProgramCache]: Analyzing trace with hash 935177138, now seen corresponding path program 1 times [2018-10-24 16:58:01,307 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:58:01,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:58:01,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:01,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:58:01,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:58:01,720 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 16:58:01,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:58:01,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:58:01,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:58:01,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:58:01,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:58:01,749 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-24 16:58:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:58:12,483 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-10-24 16:58:12,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:58:12,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-10-24 16:58:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:58:12,525 INFO L225 Difference]: With dead ends: 2918 [2018-10-24 16:58:12,525 INFO L226 Difference]: Without dead ends: 2153 [2018-10-24 16:58:12,534 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 16:58:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-10-24 16:58:12,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-10-24 16:58:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-10-24 16:58:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3448 transitions. [2018-10-24 16:58:12,692 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3448 transitions. Word has length 40 [2018-10-24 16:58:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:58:12,693 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 3448 transitions. [2018-10-24 16:58:12,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:58:12,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3448 transitions. [2018-10-24 16:58:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 16:58:12,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:58:12,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:12,698 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:58:12,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:58:12,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1617245730, now seen corresponding path program 1 times [2018-10-24 16:58:12,699 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:58:12,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:58:12,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:12,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:58:12,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:58:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:58:13,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:58:13,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:58:13,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:58:13,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:58:13,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:58:13,033 INFO L87 Difference]: Start difference. First operand 2153 states and 3448 transitions. Second operand 4 states. [2018-10-24 16:58:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:58:20,405 INFO L93 Difference]: Finished difference Result 6377 states and 10263 transitions. [2018-10-24 16:58:20,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:58:20,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-24 16:58:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:58:20,431 INFO L225 Difference]: With dead ends: 6377 [2018-10-24 16:58:20,431 INFO L226 Difference]: Without dead ends: 4226 [2018-10-24 16:58:20,439 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 16:58:20,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-10-24 16:58:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-10-24 16:58:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-10-24 16:58:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 5833 transitions. [2018-10-24 16:58:20,515 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 5833 transitions. Word has length 106 [2018-10-24 16:58:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:58:20,516 INFO L481 AbstractCegarLoop]: Abstraction has 4226 states and 5833 transitions. [2018-10-24 16:58:20,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:58:20,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 5833 transitions. [2018-10-24 16:58:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-24 16:58:20,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:58:20,530 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:58:20,530 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:58:20,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:58:20,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1519517270, now seen corresponding path program 1 times [2018-10-24 16:58:20,531 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:58:20,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:58:20,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:20,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:58:20,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:58:21,078 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-10-24 16:58:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-24 16:58:21,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:58:21,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:58:21,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:58:21,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:58:21,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:58:21,208 INFO L87 Difference]: Start difference. First operand 4226 states and 5833 transitions. Second operand 5 states. [2018-10-24 16:58:30,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:58:30,204 INFO L93 Difference]: Finished difference Result 15360 states and 20468 transitions. [2018-10-24 16:58:30,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:58:30,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2018-10-24 16:58:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:58:30,253 INFO L225 Difference]: With dead ends: 15360 [2018-10-24 16:58:30,253 INFO L226 Difference]: Without dead ends: 11136 [2018-10-24 16:58:30,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:58:30,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11136 states. [2018-10-24 16:58:30,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11136 to 10445. [2018-10-24 16:58:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10445 states. [2018-10-24 16:58:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10445 states to 10445 states and 12444 transitions. [2018-10-24 16:58:30,435 INFO L78 Accepts]: Start accepts. Automaton has 10445 states and 12444 transitions. Word has length 225 [2018-10-24 16:58:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:58:30,436 INFO L481 AbstractCegarLoop]: Abstraction has 10445 states and 12444 transitions. [2018-10-24 16:58:30,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:58:30,437 INFO L276 IsEmpty]: Start isEmpty. Operand 10445 states and 12444 transitions. [2018-10-24 16:58:30,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-24 16:58:30,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:58:30,445 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, 3, 3, 3, 3, 3, 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] [2018-10-24 16:58:30,446 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:58:30,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:58:30,446 INFO L82 PathProgramCache]: Analyzing trace with hash 541678018, now seen corresponding path program 1 times [2018-10-24 16:58:30,446 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:58:30,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:58:30,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:30,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:58:30,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:58:30,996 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:58:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 306 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-10-24 16:58:31,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:58:31,222 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 16:58:31,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:58:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:58:31,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:58:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-24 16:58:31,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:58:31,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:58:31,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:58:31,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:58:31,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:58:31,662 INFO L87 Difference]: Start difference. First operand 10445 states and 12444 transitions. Second operand 6 states. [2018-10-24 16:58:43,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:58:43,590 INFO L93 Difference]: Finished difference Result 31269 states and 37248 transitions. [2018-10-24 16:58:43,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:58:43,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 408 [2018-10-24 16:58:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:58:43,658 INFO L225 Difference]: With dead ends: 31269 [2018-10-24 16:58:43,658 INFO L226 Difference]: Without dead ends: 18750 [2018-10-24 16:58:43,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 408 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:58:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18750 states. [2018-10-24 16:58:43,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18750 to 13883. [2018-10-24 16:58:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13883 states. [2018-10-24 16:58:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13883 states to 13883 states and 15539 transitions. [2018-10-24 16:58:43,930 INFO L78 Accepts]: Start accepts. Automaton has 13883 states and 15539 transitions. Word has length 408 [2018-10-24 16:58:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:58:43,931 INFO L481 AbstractCegarLoop]: Abstraction has 13883 states and 15539 transitions. [2018-10-24 16:58:43,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:58:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 13883 states and 15539 transitions. [2018-10-24 16:58:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-24 16:58:43,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:58:43,940 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:58:43,941 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:58:43,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:58:43,941 INFO L82 PathProgramCache]: Analyzing trace with hash -158281945, now seen corresponding path program 1 times [2018-10-24 16:58:43,941 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:58:43,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:58:43,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:43,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:58:43,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:58:44,311 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:58:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 16:58:44,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:58:44,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:58:44,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:58:44,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:58:44,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:58:44,533 INFO L87 Difference]: Start difference. First operand 13883 states and 15539 transitions. Second operand 4 states. [2018-10-24 16:58:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:58:51,041 INFO L93 Difference]: Finished difference Result 31925 states and 36879 transitions. [2018-10-24 16:58:51,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:58:51,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2018-10-24 16:58:51,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:58:51,082 INFO L225 Difference]: With dead ends: 31925 [2018-10-24 16:58:51,082 INFO L226 Difference]: Without dead ends: 18044 [2018-10-24 16:58:51,100 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 16:58:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18044 states. [2018-10-24 16:58:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18044 to 15956. [2018-10-24 16:58:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15956 states. [2018-10-24 16:58:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15956 states to 15956 states and 17936 transitions. [2018-10-24 16:58:51,345 INFO L78 Accepts]: Start accepts. Automaton has 15956 states and 17936 transitions. Word has length 413 [2018-10-24 16:58:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:58:51,346 INFO L481 AbstractCegarLoop]: Abstraction has 15956 states and 17936 transitions. [2018-10-24 16:58:51,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:58:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 15956 states and 17936 transitions. [2018-10-24 16:58:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-10-24 16:58:51,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:58:51,357 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:51,358 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:58:51,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:58:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash -221686447, now seen corresponding path program 1 times [2018-10-24 16:58:51,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:58:51,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:58:51,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:51,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:58:51,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:58:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2018-10-24 16:58:52,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:58:52,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:58:52,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:58:52,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:58:52,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:58:52,016 INFO L87 Difference]: Start difference. First operand 15956 states and 17936 transitions. Second operand 4 states. [2018-10-24 16:58:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:58:57,744 INFO L93 Difference]: Finished difference Result 48494 states and 55980 transitions. [2018-10-24 16:58:57,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:58:57,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 507 [2018-10-24 16:58:57,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:58:57,798 INFO L225 Difference]: With dead ends: 48494 [2018-10-24 16:58:57,799 INFO L226 Difference]: Without dead ends: 29066 [2018-10-24 16:58:57,828 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 16:58:57,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29066 states. [2018-10-24 16:58:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29066 to 29066. [2018-10-24 16:58:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29066 states. [2018-10-24 16:58:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29066 states to 29066 states and 31982 transitions. [2018-10-24 16:58:58,248 INFO L78 Accepts]: Start accepts. Automaton has 29066 states and 31982 transitions. Word has length 507 [2018-10-24 16:58:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:58:58,249 INFO L481 AbstractCegarLoop]: Abstraction has 29066 states and 31982 transitions. [2018-10-24 16:58:58,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:58:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 29066 states and 31982 transitions. [2018-10-24 16:58:58,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-10-24 16:58:58,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:58:58,272 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:58:58,272 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:58:58,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:58:58,273 INFO L82 PathProgramCache]: Analyzing trace with hash 469495703, now seen corresponding path program 1 times [2018-10-24 16:58:58,273 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:58:58,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:58:58,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:58,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:58:58,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:58:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:58:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-24 16:58:58,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:58:58,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:58:58,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:58:58,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:58:58,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:58:58,778 INFO L87 Difference]: Start difference. First operand 29066 states and 31982 transitions. Second operand 4 states. [2018-10-24 16:59:04,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:59:04,500 INFO L93 Difference]: Finished difference Result 101663 states and 112527 transitions. [2018-10-24 16:59:04,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:59:04,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 640 [2018-10-24 16:59:04,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:59:04,606 INFO L225 Difference]: With dead ends: 101663 [2018-10-24 16:59:04,606 INFO L226 Difference]: Without dead ends: 72599 [2018-10-24 16:59:04,649 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 16:59:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72599 states. [2018-10-24 16:59:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72599 to 70526. [2018-10-24 16:59:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70526 states. [2018-10-24 16:59:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70526 states to 70526 states and 76349 transitions. [2018-10-24 16:59:05,529 INFO L78 Accepts]: Start accepts. Automaton has 70526 states and 76349 transitions. Word has length 640 [2018-10-24 16:59:05,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:59:05,530 INFO L481 AbstractCegarLoop]: Abstraction has 70526 states and 76349 transitions. [2018-10-24 16:59:05,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:59:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 70526 states and 76349 transitions. [2018-10-24 16:59:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2018-10-24 16:59:05,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:59:05,559 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:59:05,559 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:59:05,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:59:05,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1385656680, now seen corresponding path program 1 times [2018-10-24 16:59:05,560 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:59:05,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:59:05,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:05,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:59:05,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:59:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2018-10-24 16:59:06,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:59:06,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:59:06,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:59:06,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:59:06,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:59:06,985 INFO L87 Difference]: Start difference. First operand 70526 states and 76349 transitions. Second operand 3 states. [2018-10-24 16:59:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:59:10,653 INFO L93 Difference]: Finished difference Result 141050 states and 152696 transitions. [2018-10-24 16:59:10,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:59:10,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 815 [2018-10-24 16:59:10,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:59:10,749 INFO L225 Difference]: With dead ends: 141050 [2018-10-24 16:59:10,749 INFO L226 Difference]: Without dead ends: 70526 [2018-10-24 16:59:10,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:59:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70526 states. [2018-10-24 16:59:11,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70526 to 70526. [2018-10-24 16:59:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70526 states. [2018-10-24 16:59:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70526 states to 70526 states and 75156 transitions. [2018-10-24 16:59:11,568 INFO L78 Accepts]: Start accepts. Automaton has 70526 states and 75156 transitions. Word has length 815 [2018-10-24 16:59:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:59:11,569 INFO L481 AbstractCegarLoop]: Abstraction has 70526 states and 75156 transitions. [2018-10-24 16:59:11,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:59:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 70526 states and 75156 transitions. [2018-10-24 16:59:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2018-10-24 16:59:11,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:59:11,603 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:11,604 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:59:11,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:59:11,604 INFO L82 PathProgramCache]: Analyzing trace with hash -463074975, now seen corresponding path program 1 times [2018-10-24 16:59:11,604 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:59:11,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:59:11,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:11,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:59:11,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:59:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 751 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2018-10-24 16:59:13,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:59:13,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:59:13,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:59:13,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:59:13,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:59:13,181 INFO L87 Difference]: Start difference. First operand 70526 states and 75156 transitions. Second operand 4 states. [2018-10-24 16:59:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:59:18,992 INFO L93 Difference]: Finished difference Result 159707 states and 170262 transitions. [2018-10-24 16:59:18,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:59:18,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 903 [2018-10-24 16:59:18,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:59:19,121 INFO L225 Difference]: With dead ends: 159707 [2018-10-24 16:59:19,121 INFO L226 Difference]: Without dead ends: 82257 [2018-10-24 16:59:19,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 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 16:59:19,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82257 states. [2018-10-24 16:59:20,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82257 to 82257. [2018-10-24 16:59:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82257 states. [2018-10-24 16:59:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82257 states to 82257 states and 85911 transitions. [2018-10-24 16:59:20,793 INFO L78 Accepts]: Start accepts. Automaton has 82257 states and 85911 transitions. Word has length 903 [2018-10-24 16:59:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:59:20,796 INFO L481 AbstractCegarLoop]: Abstraction has 82257 states and 85911 transitions. [2018-10-24 16:59:20,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:59:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 82257 states and 85911 transitions. [2018-10-24 16:59:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2018-10-24 16:59:20,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:59:20,844 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:59:20,845 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:59:20,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:59:20,845 INFO L82 PathProgramCache]: Analyzing trace with hash -293225857, now seen corresponding path program 1 times [2018-10-24 16:59:20,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:59:20,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:59:20,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:20,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:59:20,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:59:21,865 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-24 16:59:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 1041 proven. 201 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-10-24 16:59:23,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:59:23,987 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 16:59:23,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:59:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:59:24,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:59:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 783 proven. 0 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2018-10-24 16:59:25,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:59:25,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2018-10-24 16:59:25,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:59:25,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:59:25,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:59:25,156 INFO L87 Difference]: Start difference. First operand 82257 states and 85911 transitions. Second operand 10 states. [2018-10-24 16:59:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:59:35,042 INFO L93 Difference]: Finished difference Result 168253 states and 175663 transitions. [2018-10-24 16:59:35,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:59:35,044 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1012 [2018-10-24 16:59:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:59:35,132 INFO L225 Difference]: With dead ends: 168253 [2018-10-24 16:59:35,132 INFO L226 Difference]: Without dead ends: 85998 [2018-10-24 16:59:35,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 1011 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:59:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85998 states. [2018-10-24 16:59:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85998 to 85712. [2018-10-24 16:59:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85712 states. [2018-10-24 16:59:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85712 states to 85712 states and 89035 transitions. [2018-10-24 16:59:36,283 INFO L78 Accepts]: Start accepts. Automaton has 85712 states and 89035 transitions. Word has length 1012 [2018-10-24 16:59:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:59:36,284 INFO L481 AbstractCegarLoop]: Abstraction has 85712 states and 89035 transitions. [2018-10-24 16:59:36,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 16:59:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 85712 states and 89035 transitions. [2018-10-24 16:59:36,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1564 [2018-10-24 16:59:36,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:59:36,357 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:59:36,357 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:59:36,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:59:36,358 INFO L82 PathProgramCache]: Analyzing trace with hash 48584363, now seen corresponding path program 1 times [2018-10-24 16:59:36,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:59:36,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:59:36,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:36,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:59:36,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:59:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2750 backedges. 1811 proven. 0 refuted. 0 times theorem prover too weak. 939 trivial. 0 not checked. [2018-10-24 16:59:39,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:59:39,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:59:39,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:59:39,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:59:39,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:59:39,460 INFO L87 Difference]: Start difference. First operand 85712 states and 89035 transitions. Second operand 4 states. [2018-10-24 16:59:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:59:44,773 INFO L93 Difference]: Finished difference Result 197673 states and 205794 transitions. [2018-10-24 16:59:44,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:59:44,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1563 [2018-10-24 16:59:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:59:44,900 INFO L225 Difference]: With dead ends: 197673 [2018-10-24 16:59:44,900 INFO L226 Difference]: Without dead ends: 111962 [2018-10-24 16:59:44,956 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 16:59:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111962 states. [2018-10-24 16:59:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111962 to 109889. [2018-10-24 16:59:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109889 states. [2018-10-24 16:59:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109889 states to 109889 states and 113623 transitions. [2018-10-24 16:59:46,664 INFO L78 Accepts]: Start accepts. Automaton has 109889 states and 113623 transitions. Word has length 1563 [2018-10-24 16:59:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:59:46,665 INFO L481 AbstractCegarLoop]: Abstraction has 109889 states and 113623 transitions. [2018-10-24 16:59:46,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:59:46,665 INFO L276 IsEmpty]: Start isEmpty. Operand 109889 states and 113623 transitions. [2018-10-24 16:59:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2018-10-24 16:59:46,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:59:46,721 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:59:46,721 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:59:46,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:59:46,722 INFO L82 PathProgramCache]: Analyzing trace with hash 154353234, now seen corresponding path program 1 times [2018-10-24 16:59:46,722 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:59:46,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:59:46,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:46,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:59:46,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:59:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:59:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3399 backedges. 2286 proven. 535 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-24 16:59:50,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:59:50,415 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 16:59:50,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:59:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:59:50,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:59:51,482 WARN L179 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2018-10-24 16:59:52,220 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-24 16:59:53,129 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 29 [2018-10-24 17:00:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3399 backedges. 1162 proven. 1659 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-24 17:00:04,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 17:00:04,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2018-10-24 17:00:04,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 17:00:04,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 17:00:04,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-24 17:00:04,985 INFO L87 Difference]: Start difference. First operand 109889 states and 113623 transitions. Second operand 12 states. [2018-10-24 17:00:46,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:00:46,732 INFO L93 Difference]: Finished difference Result 266409 states and 276468 transitions. [2018-10-24 17:00:46,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 17:00:46,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1750 [2018-10-24 17:00:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:00:46,900 INFO L225 Difference]: With dead ends: 266409 [2018-10-24 17:00:46,901 INFO L226 Difference]: Without dead ends: 157213 [2018-10-24 17:00:46,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1764 GetRequests, 1749 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-10-24 17:00:47,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157213 states. [2018-10-24 17:00:48,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157213 to 141675. [2018-10-24 17:00:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141675 states. [2018-10-24 17:00:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141675 states to 141675 states and 146660 transitions. [2018-10-24 17:00:48,144 INFO L78 Accepts]: Start accepts. Automaton has 141675 states and 146660 transitions. Word has length 1750 [2018-10-24 17:00:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:00:48,145 INFO L481 AbstractCegarLoop]: Abstraction has 141675 states and 146660 transitions. [2018-10-24 17:00:48,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 17:00:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 141675 states and 146660 transitions. [2018-10-24 17:00:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1809 [2018-10-24 17:00:48,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:00:48,196 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:00:48,196 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:00:48,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:00:48,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1973696351, now seen corresponding path program 1 times [2018-10-24 17:00:48,197 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:00:48,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:00:48,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:00:48,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:00:48,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:00:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:00:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3462 backedges. 1015 proven. 1869 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-24 17:00:56,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:00:56,576 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 17:00:56,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:00:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:00:57,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:01:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3462 backedges. 1174 proven. 1710 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-10-24 17:01:01,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 17:01:01,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 12 [2018-10-24 17:01:01,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 17:01:01,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 17:01:01,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-24 17:01:01,791 INFO L87 Difference]: Start difference. First operand 141675 states and 146660 transitions. Second operand 13 states. [2018-10-24 17:01:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:01:28,175 INFO L93 Difference]: Finished difference Result 336183 states and 348657 transitions. [2018-10-24 17:01:28,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 17:01:28,176 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1808 [2018-10-24 17:01:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:01:28,384 INFO L225 Difference]: With dead ends: 336183 [2018-10-24 17:01:28,385 INFO L226 Difference]: Without dead ends: 195201 [2018-10-24 17:01:28,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1833 GetRequests, 1807 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2018-10-24 17:01:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195201 states. [2018-10-24 17:01:29,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195201 to 142291. [2018-10-24 17:01:29,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142291 states. [2018-10-24 17:01:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142291 states to 142291 states and 146913 transitions. [2018-10-24 17:01:29,962 INFO L78 Accepts]: Start accepts. Automaton has 142291 states and 146913 transitions. Word has length 1808 [2018-10-24 17:01:29,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:01:29,963 INFO L481 AbstractCegarLoop]: Abstraction has 142291 states and 146913 transitions. [2018-10-24 17:01:29,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 17:01:29,963 INFO L276 IsEmpty]: Start isEmpty. Operand 142291 states and 146913 transitions. [2018-10-24 17:01:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1917 [2018-10-24 17:01:30,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:01:30,022 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:01:30,022 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:01:30,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:01:30,023 INFO L82 PathProgramCache]: Analyzing trace with hash 780107720, now seen corresponding path program 1 times [2018-10-24 17:01:30,023 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:01:30,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:01:30,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:01:30,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:01:30,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:01:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:01:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4147 backedges. 2960 proven. 0 refuted. 0 times theorem prover too weak. 1187 trivial. 0 not checked. [2018-10-24 17:01:33,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:01:33,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:01:33,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:01:33,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:01:33,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:01:33,886 INFO L87 Difference]: Start difference. First operand 142291 states and 146913 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 17:01:38,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:01:38,623 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:01:38,628 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:01:38,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:01:38 BoogieIcfgContainer [2018-10-24 17:01:38,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:01:38,630 INFO L168 Benchmark]: Toolchain (without parser) took 227867.11 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -522.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 17:01:38,631 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. [2018-10-24 17:01:38,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1681.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:01:38,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 474.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -941.3 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:01:38,635 INFO L168 Benchmark]: Boogie Preprocessor took 304.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:01:38,636 INFO L168 Benchmark]: RCFGBuilder took 7926.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 519.3 MB). Peak memory consumption was 519.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:01:38,636 INFO L168 Benchmark]: TraceAbstraction took 217472.32 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -290.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 17:01:38,641 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 1681.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 474.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -941.3 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 304.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7926.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 519.3 MB). Peak memory consumption was 519.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217472.32 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -290.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (142291states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (188389 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 217.3s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 156.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6777 SDtfs, 37293 SDslu, 1495 SDs, 0 SdLazy, 99935 SolverSat, 10992 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 123.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5093 GetRequests, 4997 SyntacticMatches, 24 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142291occurred in iteration=13, 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: 10.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 80526 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 30.2s InterpolantComputationTime, 17084 NumberOfCodeBlocks, 17084 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 17066 ConstructedInterpolants, 754 QuantifiedInterpolants, 141442841 SizeOfPredicates, 6 NumberOfNonLiveVariables, 5682 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 22054/28032 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown