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/Problem15_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:34:31,517 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:34:31,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:34:31,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:34:31,532 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:34:31,533 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:34:31,534 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:34:31,536 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:34:31,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:34:31,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:34:31,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:34:31,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:34:31,540 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:34:31,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:34:31,543 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:34:31,543 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:34:31,544 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:34:31,546 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:34:31,548 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:34:31,549 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:34:31,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:34:31,552 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:34:31,554 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:34:31,554 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:34:31,555 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:34:31,555 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:34:31,556 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:34:31,557 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:34:31,558 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:34:31,559 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:34:31,559 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:34:31,560 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:34:31,562 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 16:34:31,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:34:31,588 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:34:31,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:34:31,591 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:34:31,592 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:34:31,592 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:34:31,592 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:34:31,593 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:34:31,593 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:34:31,593 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:34:31,593 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:34:31,593 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:34:31,594 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:34:31,595 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:34:31,595 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:34:31,595 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:34:31,596 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:34:31,596 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:34:31,596 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:34:31,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:34:31,596 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:34:31,597 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:34:31,598 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:34:31,598 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:34:31,598 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:34:31,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:34:31,599 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:34:31,599 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:34:31,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:34:31,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:34:31,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:34:31,671 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:34:31,672 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:34:31,673 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-10-24 16:34:31,742 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0eb02295a/501a3523d4dc4477bda3bd4bb01a6df4/FLAG5633bcb14 [2018-10-24 16:34:32,467 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:34:32,469 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-10-24 16:34:32,491 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0eb02295a/501a3523d4dc4477bda3bd4bb01a6df4/FLAG5633bcb14 [2018-10-24 16:34:32,505 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0eb02295a/501a3523d4dc4477bda3bd4bb01a6df4 [2018-10-24 16:34:32,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:34:32,515 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:34:32,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:34:32,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:34:32,520 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:34:32,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:34:32" (1/1) ... [2018-10-24 16:34:32,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4569e7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:32, skipping insertion in model container [2018-10-24 16:34:32,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:34:32" (1/1) ... [2018-10-24 16:34:32,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:34:32,633 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:34:33,403 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:34:33,409 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:34:33,739 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:34:33,761 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:34:33,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33 WrapperNode [2018-10-24 16:34:33,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:34:33,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:34:33,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:34:33,764 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:34:33,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (1/1) ... [2018-10-24 16:34:33,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (1/1) ... [2018-10-24 16:34:34,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:34:34,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:34:34,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:34:34,146 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:34:34,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (1/1) ... [2018-10-24 16:34:34,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (1/1) ... [2018-10-24 16:34:34,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (1/1) ... [2018-10-24 16:34:34,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (1/1) ... [2018-10-24 16:34:34,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (1/1) ... [2018-10-24 16:34:34,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (1/1) ... [2018-10-24 16:34:34,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (1/1) ... [2018-10-24 16:34:34,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:34:34,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:34:34,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:34:34,373 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:34:34,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (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 16:34:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:34:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:34:34,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:34:42,730 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:34:42,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:34:42 BoogieIcfgContainer [2018-10-24 16:34:42,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:34:42,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:34:42,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:34:42,738 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:34:42,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:34:32" (1/3) ... [2018-10-24 16:34:42,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235019c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:34:42, skipping insertion in model container [2018-10-24 16:34:42,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:34:33" (2/3) ... [2018-10-24 16:34:42,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235019c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:34:42, skipping insertion in model container [2018-10-24 16:34:42,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:34:42" (3/3) ... [2018-10-24 16:34:42,743 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label19_true-unreach-call.c [2018-10-24 16:34:42,751 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:34:42,760 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:34:42,778 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:34:42,818 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:34:42,819 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:34:42,819 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:34:42,820 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:34:42,820 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:34:42,820 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:34:42,820 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:34:42,820 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:34:42,820 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:34:42,849 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-24 16:34:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-24 16:34:42,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:34:42,862 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:34:42,864 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:34:42,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:34:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash 279835594, now seen corresponding path program 1 times [2018-10-24 16:34:42,873 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:34:42,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:34:42,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:42,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:42,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:43,401 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 16:34:43,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:34:43,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:34:43,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:34:43,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:34:43,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:34:43,428 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-24 16:34:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:34:49,949 INFO L93 Difference]: Finished difference Result 1518 states and 2794 transitions. [2018-10-24 16:34:49,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:34:49,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-24 16:34:49,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:34:49,982 INFO L225 Difference]: With dead ends: 1518 [2018-10-24 16:34:49,982 INFO L226 Difference]: Without dead ends: 1086 [2018-10-24 16:34:49,988 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 16:34:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2018-10-24 16:34:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 739. [2018-10-24 16:34:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2018-10-24 16:34:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1331 transitions. [2018-10-24 16:34:50,121 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1331 transitions. Word has length 46 [2018-10-24 16:34:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:34:50,122 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 1331 transitions. [2018-10-24 16:34:50,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:34:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1331 transitions. [2018-10-24 16:34:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 16:34:50,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:34:50,127 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 16:34:50,127 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:34:50,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:34:50,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1128912517, now seen corresponding path program 1 times [2018-10-24 16:34:50,128 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:34:50,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:34:50,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:50,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:34:50,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:34:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:34:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:34:50,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:34:50,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:34:50,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:34:50,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:34:50,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:34:50,606 INFO L87 Difference]: Start difference. First operand 739 states and 1331 transitions. Second operand 5 states. [2018-10-24 16:35:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:03,218 INFO L93 Difference]: Finished difference Result 2460 states and 4483 transitions. [2018-10-24 16:35:03,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:35:03,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-24 16:35:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:03,230 INFO L225 Difference]: With dead ends: 2460 [2018-10-24 16:35:03,230 INFO L226 Difference]: Without dead ends: 1723 [2018-10-24 16:35:03,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:35:03,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2018-10-24 16:35:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1052. [2018-10-24 16:35:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-24 16:35:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1780 transitions. [2018-10-24 16:35:03,277 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1780 transitions. Word has length 112 [2018-10-24 16:35:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:03,278 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1780 transitions. [2018-10-24 16:35:03,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:35:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1780 transitions. [2018-10-24 16:35:03,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 16:35:03,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:03,286 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 16:35:03,286 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:03,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:03,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1432151457, now seen corresponding path program 1 times [2018-10-24 16:35:03,287 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:03,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:03,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:03,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:03,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:03,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:35:03,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:35:03,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:35:03,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:35:03,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:35:03,467 INFO L87 Difference]: Start difference. First operand 1052 states and 1780 transitions. Second operand 4 states. [2018-10-24 16:35:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:07,183 INFO L93 Difference]: Finished difference Result 3969 states and 6821 transitions. [2018-10-24 16:35:07,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:35:07,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-24 16:35:07,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:07,199 INFO L225 Difference]: With dead ends: 3969 [2018-10-24 16:35:07,199 INFO L226 Difference]: Without dead ends: 2919 [2018-10-24 16:35:07,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:35:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2018-10-24 16:35:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1952. [2018-10-24 16:35:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2018-10-24 16:35:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2939 transitions. [2018-10-24 16:35:07,248 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2939 transitions. Word has length 113 [2018-10-24 16:35:07,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:07,248 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 2939 transitions. [2018-10-24 16:35:07,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:35:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2939 transitions. [2018-10-24 16:35:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 16:35:07,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:07,251 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:07,251 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:07,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:07,251 INFO L82 PathProgramCache]: Analyzing trace with hash 963376405, now seen corresponding path program 1 times [2018-10-24 16:35:07,252 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:07,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:07,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:07,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:07,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:07,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:35:07,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:35:07,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:35:07,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:35:07,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:35:07,559 INFO L87 Difference]: Start difference. First operand 1952 states and 2939 transitions. Second operand 4 states. [2018-10-24 16:35:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:12,864 INFO L93 Difference]: Finished difference Result 7512 states and 11402 transitions. [2018-10-24 16:35:12,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:35:12,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-24 16:35:12,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:12,895 INFO L225 Difference]: With dead ends: 7512 [2018-10-24 16:35:12,896 INFO L226 Difference]: Without dead ends: 5562 [2018-10-24 16:35:12,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 16:35:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2018-10-24 16:35:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 5557. [2018-10-24 16:35:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5557 states. [2018-10-24 16:35:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5557 states to 5557 states and 7561 transitions. [2018-10-24 16:35:13,027 INFO L78 Accepts]: Start accepts. Automaton has 5557 states and 7561 transitions. Word has length 117 [2018-10-24 16:35:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:13,027 INFO L481 AbstractCegarLoop]: Abstraction has 5557 states and 7561 transitions. [2018-10-24 16:35:13,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:35:13,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5557 states and 7561 transitions. [2018-10-24 16:35:13,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 16:35:13,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:13,032 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:13,032 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:13,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:13,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1070603446, now seen corresponding path program 1 times [2018-10-24 16:35:13,033 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:13,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:13,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:13,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:13,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:13,518 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 16:35:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:13,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:35:13,656 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 16:35:13,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:13,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:35:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:35:14,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:35:14,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:35:14,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:35:14,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:35:14,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:35:14,200 INFO L87 Difference]: Start difference. First operand 5557 states and 7561 transitions. Second operand 7 states. [2018-10-24 16:35:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:27,055 INFO L93 Difference]: Finished difference Result 30094 states and 41019 transitions. [2018-10-24 16:35:27,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:35:27,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2018-10-24 16:35:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:27,119 INFO L225 Difference]: With dead ends: 30094 [2018-10-24 16:35:27,120 INFO L226 Difference]: Without dead ends: 16379 [2018-10-24 16:35:27,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:35:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16379 states. [2018-10-24 16:35:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16379 to 12745. [2018-10-24 16:35:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12745 states. [2018-10-24 16:35:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 15006 transitions. [2018-10-24 16:35:27,525 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 15006 transitions. Word has length 138 [2018-10-24 16:35:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:27,526 INFO L481 AbstractCegarLoop]: Abstraction has 12745 states and 15006 transitions. [2018-10-24 16:35:27,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:35:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 15006 transitions. [2018-10-24 16:35:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-24 16:35:27,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:27,537 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:35:27,537 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:27,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:27,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1154592654, now seen corresponding path program 1 times [2018-10-24 16:35:27,538 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:27,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:27,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:27,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:27,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-24 16:35:28,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:35:28,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:35:28,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:35:28,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:35:28,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:35:28,261 INFO L87 Difference]: Start difference. First operand 12745 states and 15006 transitions. Second operand 5 states. [2018-10-24 16:35:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:32,763 INFO L93 Difference]: Finished difference Result 26090 states and 30665 transitions. [2018-10-24 16:35:32,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:35:32,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 366 [2018-10-24 16:35:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:32,789 INFO L225 Difference]: With dead ends: 26090 [2018-10-24 16:35:32,789 INFO L226 Difference]: Without dead ends: 13647 [2018-10-24 16:35:32,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:35:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13647 states. [2018-10-24 16:35:33,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13647 to 13645. [2018-10-24 16:35:33,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13645 states. [2018-10-24 16:35:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13645 states to 13645 states and 15917 transitions. [2018-10-24 16:35:33,036 INFO L78 Accepts]: Start accepts. Automaton has 13645 states and 15917 transitions. Word has length 366 [2018-10-24 16:35:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:33,037 INFO L481 AbstractCegarLoop]: Abstraction has 13645 states and 15917 transitions. [2018-10-24 16:35:33,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:35:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 13645 states and 15917 transitions. [2018-10-24 16:35:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-10-24 16:35:33,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:33,047 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:35:33,047 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:33,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:33,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1318856182, now seen corresponding path program 1 times [2018-10-24 16:35:33,048 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:33,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:33,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:33,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:33,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-24 16:35:33,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:35:33,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:35:33,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:35:33,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:35:33,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:35:33,592 INFO L87 Difference]: Start difference. First operand 13645 states and 15917 transitions. Second operand 4 states. [2018-10-24 16:35:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:39,150 INFO L93 Difference]: Finished difference Result 26691 states and 31234 transitions. [2018-10-24 16:35:39,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:35:39,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 425 [2018-10-24 16:35:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:39,183 INFO L225 Difference]: With dead ends: 26691 [2018-10-24 16:35:39,184 INFO L226 Difference]: Without dead ends: 13348 [2018-10-24 16:35:39,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 16:35:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13348 states. [2018-10-24 16:35:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13348 to 13041. [2018-10-24 16:35:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13041 states. [2018-10-24 16:35:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13041 states to 13041 states and 14341 transitions. [2018-10-24 16:35:39,391 INFO L78 Accepts]: Start accepts. Automaton has 13041 states and 14341 transitions. Word has length 425 [2018-10-24 16:35:39,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:39,392 INFO L481 AbstractCegarLoop]: Abstraction has 13041 states and 14341 transitions. [2018-10-24 16:35:39,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:35:39,392 INFO L276 IsEmpty]: Start isEmpty. Operand 13041 states and 14341 transitions. [2018-10-24 16:35:39,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-10-24 16:35:39,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:39,408 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:39,408 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:39,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:39,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1483339877, now seen corresponding path program 1 times [2018-10-24 16:35:39,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:39,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:39,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:39,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:39,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:40,024 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:35:40,631 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-10-24 16:35:41,245 WARN L179 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-10-24 16:35:41,822 WARN L179 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2018-10-24 16:35:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 289 proven. 71 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-24 16:35:42,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:35:42,127 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 16:35:42,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:42,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:35:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-10-24 16:35:42,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:35:42,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-24 16:35:42,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:35:42,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:35:42,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:35:42,728 INFO L87 Difference]: Start difference. First operand 13041 states and 14341 transitions. Second operand 9 states. [2018-10-24 16:35:54,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:54,335 INFO L93 Difference]: Finished difference Result 36553 states and 40823 transitions. [2018-10-24 16:35:54,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 16:35:54,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 510 [2018-10-24 16:35:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:54,371 INFO L225 Difference]: With dead ends: 36553 [2018-10-24 16:35:54,371 INFO L226 Difference]: Without dead ends: 23814 [2018-10-24 16:35:54,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 517 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-10-24 16:35:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23814 states. [2018-10-24 16:35:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23814 to 21139. [2018-10-24 16:35:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21139 states. [2018-10-24 16:35:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21139 states to 21139 states and 22998 transitions. [2018-10-24 16:35:55,011 INFO L78 Accepts]: Start accepts. Automaton has 21139 states and 22998 transitions. Word has length 510 [2018-10-24 16:35:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:55,012 INFO L481 AbstractCegarLoop]: Abstraction has 21139 states and 22998 transitions. [2018-10-24 16:35:55,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:35:55,013 INFO L276 IsEmpty]: Start isEmpty. Operand 21139 states and 22998 transitions. [2018-10-24 16:35:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2018-10-24 16:35:55,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:55,041 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:35:55,042 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:55,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:55,042 INFO L82 PathProgramCache]: Analyzing trace with hash -619661395, now seen corresponding path program 1 times [2018-10-24 16:35:55,042 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:55,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:55,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:55,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:55,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:35:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2018-10-24 16:35:55,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:35:55,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:35:55,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:35:55,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:35:55,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:35:55,679 INFO L87 Difference]: Start difference. First operand 21139 states and 22998 transitions. Second operand 3 states. [2018-10-24 16:35:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:35:58,786 INFO L93 Difference]: Finished difference Result 48589 states and 52847 transitions. [2018-10-24 16:35:58,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:35:58,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 666 [2018-10-24 16:35:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:35:58,820 INFO L225 Difference]: With dead ends: 48589 [2018-10-24 16:35:58,820 INFO L226 Difference]: Without dead ends: 27752 [2018-10-24 16:35:58,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:35:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27752 states. [2018-10-24 16:35:59,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27752 to 26237. [2018-10-24 16:35:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26237 states. [2018-10-24 16:35:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26237 states to 26237 states and 28404 transitions. [2018-10-24 16:35:59,166 INFO L78 Accepts]: Start accepts. Automaton has 26237 states and 28404 transitions. Word has length 666 [2018-10-24 16:35:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:35:59,167 INFO L481 AbstractCegarLoop]: Abstraction has 26237 states and 28404 transitions. [2018-10-24 16:35:59,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:35:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 26237 states and 28404 transitions. [2018-10-24 16:35:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-10-24 16:35:59,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:35:59,199 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:35:59,199 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:35:59,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:35:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1256991624, now seen corresponding path program 1 times [2018-10-24 16:35:59,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:35:59,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:35:59,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:59,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:35:59,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:35:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2018-10-24 16:36:00,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:00,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:36:00,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:36:00,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:36:00,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:36:00,143 INFO L87 Difference]: Start difference. First operand 26237 states and 28404 transitions. Second operand 5 states. [2018-10-24 16:36:05,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:05,043 INFO L93 Difference]: Finished difference Result 58786 states and 63444 transitions. [2018-10-24 16:36:05,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:36:05,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 678 [2018-10-24 16:36:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:05,084 INFO L225 Difference]: With dead ends: 58786 [2018-10-24 16:36:05,084 INFO L226 Difference]: Without dead ends: 34053 [2018-10-24 16:36:05,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:36:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34053 states. [2018-10-24 16:36:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34053 to 27141. [2018-10-24 16:36:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27141 states. [2018-10-24 16:36:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27141 states to 27141 states and 29213 transitions. [2018-10-24 16:36:05,412 INFO L78 Accepts]: Start accepts. Automaton has 27141 states and 29213 transitions. Word has length 678 [2018-10-24 16:36:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:05,414 INFO L481 AbstractCegarLoop]: Abstraction has 27141 states and 29213 transitions. [2018-10-24 16:36:05,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:36:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 27141 states and 29213 transitions. [2018-10-24 16:36:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2018-10-24 16:36:05,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:05,434 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:36:05,434 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:05,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:05,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1767342769, now seen corresponding path program 1 times [2018-10-24 16:36:05,435 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:05,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:05,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:05,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:05,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:06,034 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 16:36:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-10-24 16:36:06,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:06,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:36:06,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:36:06,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:36:06,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:36:06,576 INFO L87 Difference]: Start difference. First operand 27141 states and 29213 transitions. Second operand 4 states. [2018-10-24 16:36:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:10,354 INFO L93 Difference]: Finished difference Result 69018 states and 74240 transitions. [2018-10-24 16:36:10,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:36:10,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 693 [2018-10-24 16:36:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:10,397 INFO L225 Difference]: With dead ends: 69018 [2018-10-24 16:36:10,397 INFO L226 Difference]: Without dead ends: 43981 [2018-10-24 16:36:10,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:36:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43981 states. [2018-10-24 16:36:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43981 to 35238. [2018-10-24 16:36:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35238 states. [2018-10-24 16:36:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35238 states to 35238 states and 37356 transitions. [2018-10-24 16:36:10,805 INFO L78 Accepts]: Start accepts. Automaton has 35238 states and 37356 transitions. Word has length 693 [2018-10-24 16:36:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:10,805 INFO L481 AbstractCegarLoop]: Abstraction has 35238 states and 37356 transitions. [2018-10-24 16:36:10,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:36:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 35238 states and 37356 transitions. [2018-10-24 16:36:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-10-24 16:36:10,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:10,847 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:10,847 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:10,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:10,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1823544225, now seen corresponding path program 1 times [2018-10-24 16:36:10,848 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:10,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:10,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:10,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:10,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 1018 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2018-10-24 16:36:11,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:11,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:36:11,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:36:11,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:36:11,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:36:11,955 INFO L87 Difference]: Start difference. First operand 35238 states and 37356 transitions. Second operand 4 states. [2018-10-24 16:36:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:15,073 INFO L93 Difference]: Finished difference Result 76793 states and 81491 transitions. [2018-10-24 16:36:15,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:36:15,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 826 [2018-10-24 16:36:15,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:15,116 INFO L225 Difference]: With dead ends: 76793 [2018-10-24 16:36:15,116 INFO L226 Difference]: Without dead ends: 43659 [2018-10-24 16:36:15,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:36:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43659 states. [2018-10-24 16:36:15,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43659 to 36138. [2018-10-24 16:36:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36138 states. [2018-10-24 16:36:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36138 states to 36138 states and 38158 transitions. [2018-10-24 16:36:15,519 INFO L78 Accepts]: Start accepts. Automaton has 36138 states and 38158 transitions. Word has length 826 [2018-10-24 16:36:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:15,519 INFO L481 AbstractCegarLoop]: Abstraction has 36138 states and 38158 transitions. [2018-10-24 16:36:15,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:36:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 36138 states and 38158 transitions. [2018-10-24 16:36:15,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-10-24 16:36:15,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:15,550 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:15,550 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:15,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:15,551 INFO L82 PathProgramCache]: Analyzing trace with hash 847052626, now seen corresponding path program 1 times [2018-10-24 16:36:15,551 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:15,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:15,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:15,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:15,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2018-10-24 16:36:16,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:16,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:36:16,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:36:16,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:36:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:36:16,488 INFO L87 Difference]: Start difference. First operand 36138 states and 38158 transitions. Second operand 5 states. [2018-10-24 16:36:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:20,347 INFO L93 Difference]: Finished difference Result 79794 states and 84363 transitions. [2018-10-24 16:36:20,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:36:20,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 863 [2018-10-24 16:36:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:20,390 INFO L225 Difference]: With dead ends: 79794 [2018-10-24 16:36:20,390 INFO L226 Difference]: Without dead ends: 45760 [2018-10-24 16:36:20,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:36:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45760 states. [2018-10-24 16:36:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45760 to 35536. [2018-10-24 16:36:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35536 states. [2018-10-24 16:36:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35536 states to 35536 states and 37464 transitions. [2018-10-24 16:36:20,796 INFO L78 Accepts]: Start accepts. Automaton has 35536 states and 37464 transitions. Word has length 863 [2018-10-24 16:36:20,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:20,797 INFO L481 AbstractCegarLoop]: Abstraction has 35536 states and 37464 transitions. [2018-10-24 16:36:20,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:36:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 35536 states and 37464 transitions. [2018-10-24 16:36:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2018-10-24 16:36:20,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:20,817 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-24 16:36:20,817 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:20,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:20,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1703283928, now seen corresponding path program 1 times [2018-10-24 16:36:20,818 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:20,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:20,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:20,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:20,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:21,608 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-24 16:36:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 1097 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-10-24 16:36:22,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:36:22,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:36:22,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:36:22,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:36:22,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:36:22,461 INFO L87 Difference]: Start difference. First operand 35536 states and 37464 transitions. Second operand 6 states. [2018-10-24 16:36:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:36:27,231 INFO L93 Difference]: Finished difference Result 79433 states and 83543 transitions. [2018-10-24 16:36:27,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:36:27,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 897 [2018-10-24 16:36:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:36:27,272 INFO L225 Difference]: With dead ends: 79433 [2018-10-24 16:36:27,273 INFO L226 Difference]: Without dead ends: 44199 [2018-10-24 16:36:27,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:36:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44199 states. [2018-10-24 16:36:27,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44199 to 36405. [2018-10-24 16:36:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36405 states. [2018-10-24 16:36:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36405 states to 36405 states and 38171 transitions. [2018-10-24 16:36:27,688 INFO L78 Accepts]: Start accepts. Automaton has 36405 states and 38171 transitions. Word has length 897 [2018-10-24 16:36:27,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:36:27,688 INFO L481 AbstractCegarLoop]: Abstraction has 36405 states and 38171 transitions. [2018-10-24 16:36:27,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:36:27,689 INFO L276 IsEmpty]: Start isEmpty. Operand 36405 states and 38171 transitions. [2018-10-24 16:36:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2018-10-24 16:36:27,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:36:27,715 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2018-10-24 16:36:27,715 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:36:27,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:36:27,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1454958507, now seen corresponding path program 1 times [2018-10-24 16:36:27,716 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:36:27,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:36:27,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:27,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:27,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:36:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 1179 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:36:29,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:36:29,917 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 16:36:29,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:36:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:36:30,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:36:59,331 WARN L179 SmtUtils]: Spent 28.77 s on a formula simplification. DAG size of input: 462 DAG size of output: 151 [2018-10-24 16:37:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 746 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2018-10-24 16:37:02,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:37:02,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-10-24 16:37:02,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:37:02,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:37:02,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:37:02,599 INFO L87 Difference]: Start difference. First operand 36405 states and 38171 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 16:38:39,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:38:39,515 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:38:39,523 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:38:39,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:38:39 BoogieIcfgContainer [2018-10-24 16:38:39,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:38:39,526 INFO L168 Benchmark]: Toolchain (without parser) took 247011.05 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -640.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 16:38:39,531 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:38:39,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1246.25 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:38:39,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 382.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:38:39,533 INFO L168 Benchmark]: Boogie Preprocessor took 226.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:38:39,534 INFO L168 Benchmark]: RCFGBuilder took 8360.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 302.0 MB). Peak memory consumption was 302.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:38:39,535 INFO L168 Benchmark]: TraceAbstraction took 236789.27 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.0 GB in the end (delta: -224.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 16:38:39,540 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1246.25 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 382.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 226.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8360.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 302.0 MB). Peak memory consumption was 302.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236789.27 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.0 GB in the end (delta: -224.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (36405states) and FLOYD_HOARE automaton (currently 7 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (7226 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 236.7s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 183.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3654 SDtfs, 15807 SDslu, 2540 SDs, 0 SdLazy, 35016 SolverSat, 6858 SolverUnsat, 45 SolverUnknown, 0 SolverNotchecked, 170.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1656 GetRequests, 1592 SyntacticMatches, 10 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 34.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36405occurred in iteration=14, 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: 3.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 51317 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 41.7s InterpolantComputationTime, 8930 NumberOfCodeBlocks, 8930 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8912 ConstructedInterpolants, 88 QuantifiedInterpolants, 32660957 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1874 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 9804/11097 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown