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/Problem13_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:19:42,527 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:19:42,529 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:19:42,546 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:19:42,547 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:19:42,548 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:19:42,551 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:19:42,555 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:19:42,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:19:42,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:19:42,566 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:19:42,566 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:19:42,567 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:19:42,571 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:19:42,572 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:19:42,576 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:19:42,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:19:42,579 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:19:42,581 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:19:42,582 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:19:42,583 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:19:42,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:19:42,587 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:19:42,587 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:19:42,587 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:19:42,588 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:19:42,589 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:19:42,590 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:19:42,591 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:19:42,592 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:19:42,592 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:19:42,593 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:19:42,595 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 16:19:42,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:19:42,611 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:19:42,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:19:42,612 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:19:42,612 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:19:42,612 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:19:42,613 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:19:42,613 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:19:42,613 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:19:42,613 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:19:42,613 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:19:42,614 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:19:42,614 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:19:42,614 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:19:42,614 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:19:42,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:19:42,615 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:19:42,615 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:19:42,615 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:19:42,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:19:42,616 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:19:42,616 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:19:42,616 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:19:42,616 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:19:42,616 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:19:42,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:19:42,617 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:19:42,617 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:19:42,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:19:42,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:19:42,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:19:42,711 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:19:42,711 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:19:42,712 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-10-24 16:19:42,778 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf48ca07c/cfaa43b41b434d0a9aa2864869975dd3/FLAG7f33a4834 [2018-10-24 16:19:43,610 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:19:43,611 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-10-24 16:19:43,651 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf48ca07c/cfaa43b41b434d0a9aa2864869975dd3/FLAG7f33a4834 [2018-10-24 16:19:43,672 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf48ca07c/cfaa43b41b434d0a9aa2864869975dd3 [2018-10-24 16:19:43,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:19:43,687 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:19:43,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:43,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:19:43,694 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:19:43,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:43" (1/1) ... [2018-10-24 16:19:43,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48886557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:43, skipping insertion in model container [2018-10-24 16:19:43,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:43" (1/1) ... [2018-10-24 16:19:43,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:19:43,883 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:19:45,361 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:45,367 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:19:46,281 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:46,323 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:19:46,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46 WrapperNode [2018-10-24 16:19:46,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:46,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:46,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:19:46,327 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:19:46,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (1/1) ... [2018-10-24 16:19:46,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (1/1) ... [2018-10-24 16:19:47,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:47,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:19:47,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:19:47,207 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:19:47,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (1/1) ... [2018-10-24 16:19:47,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (1/1) ... [2018-10-24 16:19:47,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (1/1) ... [2018-10-24 16:19:47,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (1/1) ... [2018-10-24 16:19:47,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (1/1) ... [2018-10-24 16:19:47,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (1/1) ... [2018-10-24 16:19:47,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (1/1) ... [2018-10-24 16:19:47,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:19:47,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:19:47,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:19:47,707 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:19:47,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (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 16:19:47,771 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:19:47,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:19:47,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:20:01,274 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:20:01,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:20:01 BoogieIcfgContainer [2018-10-24 16:20:01,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:20:01,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:20:01,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:20:01,279 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:20:01,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:19:43" (1/3) ... [2018-10-24 16:20:01,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110261ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:20:01, skipping insertion in model container [2018-10-24 16:20:01,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:46" (2/3) ... [2018-10-24 16:20:01,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110261ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:20:01, skipping insertion in model container [2018-10-24 16:20:01,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:20:01" (3/3) ... [2018-10-24 16:20:01,284 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13_true-unreach-call.c [2018-10-24 16:20:01,294 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:20:01,304 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:20:01,321 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:20:01,366 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:20:01,367 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:20:01,367 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:20:01,367 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:20:01,367 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:20:01,368 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:20:01,368 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:20:01,368 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:20:01,368 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:20:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:20:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-24 16:20:01,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:01,425 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:01,427 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:01,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:01,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1482679290, now seen corresponding path program 1 times [2018-10-24 16:20:01,433 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:01,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:01,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:01,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:01,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:01,879 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 16:20:01,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:01,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:01,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:01,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:01,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:01,906 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:20:17,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:17,018 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 16:20:17,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:17,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-24 16:20:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:17,062 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 16:20:17,062 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 16:20:17,071 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 16:20:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 16:20:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 16:20:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 16:20:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 16:20:17,228 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 58 [2018-10-24 16:20:17,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:17,229 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 16:20:17,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 16:20:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 16:20:17,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:17,235 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:17,235 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:17,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:17,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1393057410, now seen corresponding path program 1 times [2018-10-24 16:20:17,236 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:17,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:17,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:17,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:17,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:18,252 WARN L179 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:20:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:18,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:18,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:20:18,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:18,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:18,535 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 16:20:18,808 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:20:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:36,005 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 16:20:36,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:20:36,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-10-24 16:20:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:36,033 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 16:20:36,033 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 16:20:36,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:20:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 16:20:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 16:20:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 16:20:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 16:20:36,149 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 124 [2018-10-24 16:20:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:36,151 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 16:20:36,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 16:20:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 16:20:36,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:36,161 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:36,165 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:36,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:36,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1220810363, now seen corresponding path program 1 times [2018-10-24 16:20:36,166 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:36,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:36,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:36,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:36,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-24 16:20:36,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:36,687 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 16:20:36,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:36,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-24 16:20:36,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:36,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 16:20:36,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:36,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:36,978 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-24 16:20:52,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:52,792 INFO L93 Difference]: Finished difference Result 15791 states and 24940 transitions. [2018-10-24 16:20:52,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:52,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2018-10-24 16:20:52,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:52,846 INFO L225 Difference]: With dead ends: 15791 [2018-10-24 16:20:52,847 INFO L226 Difference]: Without dead ends: 11464 [2018-10-24 16:20:52,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2018-10-24 16:20:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11436. [2018-10-24 16:20:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11436 states. [2018-10-24 16:20:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 15971 transitions. [2018-10-24 16:20:53,068 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 15971 transitions. Word has length 184 [2018-10-24 16:20:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:53,069 INFO L481 AbstractCegarLoop]: Abstraction has 11436 states and 15971 transitions. [2018-10-24 16:20:53,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 15971 transitions. [2018-10-24 16:20:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-24 16:20:53,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:53,081 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:20:53,081 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:53,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:53,081 INFO L82 PathProgramCache]: Analyzing trace with hash 705131765, now seen corresponding path program 1 times [2018-10-24 16:20:53,082 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:53,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:53,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:53,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:53,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 111 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 16:20:53,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:53,589 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 16:20:53,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:53,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:53,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:53,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:20:53,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:53,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:53,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:53,778 INFO L87 Difference]: Start difference. First operand 11436 states and 15971 transitions. Second operand 4 states. [2018-10-24 16:21:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:05,404 INFO L93 Difference]: Finished difference Result 37884 states and 53999 transitions. [2018-10-24 16:21:05,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:05,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2018-10-24 16:21:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:05,483 INFO L225 Difference]: With dead ends: 37884 [2018-10-24 16:21:05,483 INFO L226 Difference]: Without dead ends: 27238 [2018-10-24 16:21:05,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 264 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 16:21:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27238 states. [2018-10-24 16:21:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27238 to 20891. [2018-10-24 16:21:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20891 states. [2018-10-24 16:21:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20891 states to 20891 states and 27233 transitions. [2018-10-24 16:21:05,878 INFO L78 Accepts]: Start accepts. Automaton has 20891 states and 27233 transitions. Word has length 264 [2018-10-24 16:21:05,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:05,879 INFO L481 AbstractCegarLoop]: Abstraction has 20891 states and 27233 transitions. [2018-10-24 16:21:05,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:05,879 INFO L276 IsEmpty]: Start isEmpty. Operand 20891 states and 27233 transitions. [2018-10-24 16:21:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-24 16:21:05,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:05,887 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:21:05,887 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:05,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:05,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2033026039, now seen corresponding path program 1 times [2018-10-24 16:21:05,888 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:05,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:05,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:05,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:05,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 16:21:06,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:06,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:21:06,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:21:06,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:21:06,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:21:06,221 INFO L87 Difference]: Start difference. First operand 20891 states and 27233 transitions. Second operand 3 states. [2018-10-24 16:21:16,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:16,357 INFO L93 Difference]: Finished difference Result 59901 states and 78789 transitions. [2018-10-24 16:21:16,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:21:16,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 290 [2018-10-24 16:21:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:16,426 INFO L225 Difference]: With dead ends: 59901 [2018-10-24 16:21:16,427 INFO L226 Difference]: Without dead ends: 39800 [2018-10-24 16:21:16,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:21:16,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39800 states. [2018-10-24 16:21:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39800 to 39799. [2018-10-24 16:21:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39799 states. [2018-10-24 16:21:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39799 states to 39799 states and 48749 transitions. [2018-10-24 16:21:16,971 INFO L78 Accepts]: Start accepts. Automaton has 39799 states and 48749 transitions. Word has length 290 [2018-10-24 16:21:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:16,972 INFO L481 AbstractCegarLoop]: Abstraction has 39799 states and 48749 transitions. [2018-10-24 16:21:16,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:21:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 39799 states and 48749 transitions. [2018-10-24 16:21:16,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-24 16:21:16,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:16,988 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:16,988 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:16,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:16,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1706732680, now seen corresponding path program 1 times [2018-10-24 16:21:16,989 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:16,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:16,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:16,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:16,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:17,567 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-24 16:21:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 320 proven. 4 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-10-24 16:21:17,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:21:17,789 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 16:21:17,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:17,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:21:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-24 16:21:18,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:21:18,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:21:18,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:18,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:18,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:18,126 INFO L87 Difference]: Start difference. First operand 39799 states and 48749 transitions. Second operand 4 states. [2018-10-24 16:21:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:27,924 INFO L93 Difference]: Finished difference Result 96185 states and 115641 transitions. [2018-10-24 16:21:27,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:27,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 387 [2018-10-24 16:21:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:28,021 INFO L225 Difference]: With dead ends: 96185 [2018-10-24 16:21:28,022 INFO L226 Difference]: Without dead ends: 57176 [2018-10-24 16:21:28,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:28,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57176 states. [2018-10-24 16:21:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57176 to 48469. [2018-10-24 16:21:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48469 states. [2018-10-24 16:21:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48469 states to 48469 states and 58135 transitions. [2018-10-24 16:21:28,677 INFO L78 Accepts]: Start accepts. Automaton has 48469 states and 58135 transitions. Word has length 387 [2018-10-24 16:21:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:28,677 INFO L481 AbstractCegarLoop]: Abstraction has 48469 states and 58135 transitions. [2018-10-24 16:21:28,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand 48469 states and 58135 transitions. [2018-10-24 16:21:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-24 16:21:28,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:28,695 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:28,696 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:28,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:28,696 INFO L82 PathProgramCache]: Analyzing trace with hash 848401784, now seen corresponding path program 1 times [2018-10-24 16:21:28,696 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:28,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:28,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:28,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:28,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-24 16:21:29,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:29,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:29,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:29,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:29,103 INFO L87 Difference]: Start difference. First operand 48469 states and 58135 transitions. Second operand 4 states. [2018-10-24 16:21:39,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:39,900 INFO L93 Difference]: Finished difference Result 126123 states and 153359 transitions. [2018-10-24 16:21:39,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:39,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 393 [2018-10-24 16:21:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:39,986 INFO L225 Difference]: With dead ends: 126123 [2018-10-24 16:21:39,987 INFO L226 Difference]: Without dead ends: 78444 [2018-10-24 16:21:40,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78444 states. [2018-10-24 16:21:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78444 to 76050. [2018-10-24 16:21:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76050 states. [2018-10-24 16:21:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76050 states to 76050 states and 89208 transitions. [2018-10-24 16:21:40,821 INFO L78 Accepts]: Start accepts. Automaton has 76050 states and 89208 transitions. Word has length 393 [2018-10-24 16:21:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:40,822 INFO L481 AbstractCegarLoop]: Abstraction has 76050 states and 89208 transitions. [2018-10-24 16:21:40,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 76050 states and 89208 transitions. [2018-10-24 16:21:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-10-24 16:21:40,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:40,846 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:40,846 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:40,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1983809873, now seen corresponding path program 1 times [2018-10-24 16:21:40,847 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:40,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:40,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:40,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:40,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:41,292 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:21:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-24 16:21:41,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:41,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:21:41,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:41,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:41,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:41,436 INFO L87 Difference]: Start difference. First operand 76050 states and 89208 transitions. Second operand 4 states. [2018-10-24 16:21:50,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:50,256 INFO L93 Difference]: Finished difference Result 162340 states and 189790 transitions. [2018-10-24 16:21:50,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:50,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 416 [2018-10-24 16:21:50,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:50,338 INFO L225 Difference]: With dead ends: 162340 [2018-10-24 16:21:50,338 INFO L226 Difference]: Without dead ends: 75202 [2018-10-24 16:21:50,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 16:21:50,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75202 states. [2018-10-24 16:21:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75202 to 65745. [2018-10-24 16:21:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65745 states. [2018-10-24 16:21:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65745 states to 65745 states and 75711 transitions. [2018-10-24 16:21:50,990 INFO L78 Accepts]: Start accepts. Automaton has 65745 states and 75711 transitions. Word has length 416 [2018-10-24 16:21:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:50,991 INFO L481 AbstractCegarLoop]: Abstraction has 65745 states and 75711 transitions. [2018-10-24 16:21:50,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 65745 states and 75711 transitions. [2018-10-24 16:21:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-10-24 16:21:51,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:51,007 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:51,007 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:51,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:51,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1416563492, now seen corresponding path program 1 times [2018-10-24 16:21:51,008 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:51,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:51,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:51,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:51,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2018-10-24 16:21:51,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:51,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:51,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:21:51,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:21:51,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:51,578 INFO L87 Difference]: Start difference. First operand 65745 states and 75711 transitions. Second operand 5 states. [2018-10-24 16:22:14,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:14,033 INFO L93 Difference]: Finished difference Result 246810 states and 284823 transitions. [2018-10-24 16:22:14,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:22:14,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 453 [2018-10-24 16:22:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:14,221 INFO L225 Difference]: With dead ends: 246810 [2018-10-24 16:22:14,221 INFO L226 Difference]: Without dead ends: 180274 [2018-10-24 16:22:14,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180274 states. [2018-10-24 16:22:16,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180274 to 171427. [2018-10-24 16:22:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171427 states. [2018-10-24 16:22:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171427 states to 171427 states and 193543 transitions. [2018-10-24 16:22:16,721 INFO L78 Accepts]: Start accepts. Automaton has 171427 states and 193543 transitions. Word has length 453 [2018-10-24 16:22:16,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:16,722 INFO L481 AbstractCegarLoop]: Abstraction has 171427 states and 193543 transitions. [2018-10-24 16:22:16,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 171427 states and 193543 transitions. [2018-10-24 16:22:16,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-10-24 16:22:16,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:16,735 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:16,735 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:16,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:16,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1873190131, now seen corresponding path program 1 times [2018-10-24 16:22:16,735 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:16,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:16,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:16,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:16,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 462 proven. 56 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:22:17,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:22:17,280 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:22:17,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:17,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:22:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-10-24 16:22:17,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:22:17,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:22:17,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:22:17,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:22:17,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:17,639 INFO L87 Difference]: Start difference. First operand 171427 states and 193543 transitions. Second operand 5 states. [2018-10-24 16:22:30,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:30,359 INFO L93 Difference]: Finished difference Result 345988 states and 391588 transitions. [2018-10-24 16:22:30,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:30,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 486 [2018-10-24 16:22:30,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:30,539 INFO L225 Difference]: With dead ends: 345988 [2018-10-24 16:22:30,540 INFO L226 Difference]: Without dead ends: 175351 [2018-10-24 16:22:30,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 487 SyntacticMatches, 4 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 16:22:30,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175351 states. [2018-10-24 16:22:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175351 to 173774. [2018-10-24 16:22:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173774 states. [2018-10-24 16:22:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173774 states to 173774 states and 188774 transitions. [2018-10-24 16:22:33,498 INFO L78 Accepts]: Start accepts. Automaton has 173774 states and 188774 transitions. Word has length 486 [2018-10-24 16:22:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:33,499 INFO L481 AbstractCegarLoop]: Abstraction has 173774 states and 188774 transitions. [2018-10-24 16:22:33,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 173774 states and 188774 transitions. [2018-10-24 16:22:33,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-10-24 16:22:33,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:33,513 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:22:33,514 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:33,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:33,514 INFO L82 PathProgramCache]: Analyzing trace with hash 325343511, now seen corresponding path program 1 times [2018-10-24 16:22:33,514 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:33,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:33,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:33,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:33,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-24 16:22:34,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:34,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:22:34,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:22:34,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:22:34,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:34,095 INFO L87 Difference]: Start difference. First operand 173774 states and 188774 transitions. Second operand 3 states. [2018-10-24 16:22:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:39,580 INFO L93 Difference]: Finished difference Result 345167 states and 374776 transitions. [2018-10-24 16:22:39,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:22:39,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 548 [2018-10-24 16:22:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:39,794 INFO L225 Difference]: With dead ends: 345167 [2018-10-24 16:22:39,794 INFO L226 Difference]: Without dead ends: 172180 [2018-10-24 16:22:39,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:22:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172180 states. [2018-10-24 16:22:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172180 to 172180. [2018-10-24 16:22:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172180 states. [2018-10-24 16:22:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172180 states to 172180 states and 186762 transitions. [2018-10-24 16:22:47,420 INFO L78 Accepts]: Start accepts. Automaton has 172180 states and 186762 transitions. Word has length 548 [2018-10-24 16:22:47,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:47,421 INFO L481 AbstractCegarLoop]: Abstraction has 172180 states and 186762 transitions. [2018-10-24 16:22:47,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:22:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 172180 states and 186762 transitions. [2018-10-24 16:22:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-10-24 16:22:47,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:47,441 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-24 16:22:47,441 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:47,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1654391557, now seen corresponding path program 1 times [2018-10-24 16:22:47,442 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:47,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:47,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:47,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:47,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:47,853 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 16:22:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-10-24 16:22:48,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:48,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:48,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:48,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:48,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:48,062 INFO L87 Difference]: Start difference. First operand 172180 states and 186762 transitions. Second operand 4 states. [2018-10-24 16:22:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:56,748 INFO L93 Difference]: Finished difference Result 342025 states and 371045 transitions. [2018-10-24 16:22:56,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:56,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 597 [2018-10-24 16:22:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:56,938 INFO L225 Difference]: With dead ends: 342025 [2018-10-24 16:22:56,938 INFO L226 Difference]: Without dead ends: 170635 [2018-10-24 16:22:57,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:57,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170635 states. [2018-10-24 16:22:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170635 to 168227. [2018-10-24 16:22:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168227 states. [2018-10-24 16:22:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168227 states to 168227 states and 178386 transitions. [2018-10-24 16:22:58,978 INFO L78 Accepts]: Start accepts. Automaton has 168227 states and 178386 transitions. Word has length 597 [2018-10-24 16:22:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:58,978 INFO L481 AbstractCegarLoop]: Abstraction has 168227 states and 178386 transitions. [2018-10-24 16:22:58,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 168227 states and 178386 transitions. [2018-10-24 16:22:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2018-10-24 16:22:59,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:59,009 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2018-10-24 16:22:59,010 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:59,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:59,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1916267275, now seen corresponding path program 1 times [2018-10-24 16:22:59,010 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:59,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:59,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:59,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:59,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:00,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 744 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-24 16:23:00,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:00,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:00,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:00,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:00,765 INFO L87 Difference]: Start difference. First operand 168227 states and 178386 transitions. Second operand 4 states. [2018-10-24 16:23:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:11,219 INFO L93 Difference]: Finished difference Result 334868 states and 355128 transitions. [2018-10-24 16:23:11,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:11,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 804 [2018-10-24 16:23:11,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:11,392 INFO L225 Difference]: With dead ends: 334868 [2018-10-24 16:23:11,393 INFO L226 Difference]: Without dead ends: 166641 [2018-10-24 16:23:11,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 5 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 16:23:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166641 states. [2018-10-24 16:23:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166641 to 165064. [2018-10-24 16:23:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165064 states. [2018-10-24 16:23:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165064 states to 165064 states and 174321 transitions. [2018-10-24 16:23:13,337 INFO L78 Accepts]: Start accepts. Automaton has 165064 states and 174321 transitions. Word has length 804 [2018-10-24 16:23:13,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:13,338 INFO L481 AbstractCegarLoop]: Abstraction has 165064 states and 174321 transitions. [2018-10-24 16:23:13,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 165064 states and 174321 transitions. [2018-10-24 16:23:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2018-10-24 16:23:13,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:13,376 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2018-10-24 16:23:13,376 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:13,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:13,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1082437482, now seen corresponding path program 1 times [2018-10-24 16:23:13,377 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:13,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:13,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:13,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:13,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-10-24 16:23:14,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:14,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:14,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:14,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:14,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:14,873 INFO L87 Difference]: Start difference. First operand 165064 states and 174321 transitions. Second operand 4 states. [2018-10-24 16:23:23,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:23,988 INFO L93 Difference]: Finished difference Result 329339 states and 347723 transitions. [2018-10-24 16:23:23,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:23,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 815 [2018-10-24 16:23:23,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:24,161 INFO L225 Difference]: With dead ends: 329339 [2018-10-24 16:23:24,161 INFO L226 Difference]: Without dead ends: 165065 [2018-10-24 16:23:24,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:24,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165065 states. [2018-10-24 16:23:25,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165065 to 158744. [2018-10-24 16:23:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158744 states. [2018-10-24 16:23:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158744 states to 158744 states and 165446 transitions. [2018-10-24 16:23:25,921 INFO L78 Accepts]: Start accepts. Automaton has 158744 states and 165446 transitions. Word has length 815 [2018-10-24 16:23:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:25,922 INFO L481 AbstractCegarLoop]: Abstraction has 158744 states and 165446 transitions. [2018-10-24 16:23:25,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:25,922 INFO L276 IsEmpty]: Start isEmpty. Operand 158744 states and 165446 transitions. [2018-10-24 16:23:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2018-10-24 16:23:25,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:25,963 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:25,963 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:25,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:25,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2024117446, now seen corresponding path program 1 times [2018-10-24 16:23:25,964 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:25,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:25,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:25,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:25,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:23:27,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:27,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:27,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:23:27,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:23:27,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:27,910 INFO L87 Difference]: Start difference. First operand 158744 states and 165446 transitions. Second operand 5 states. Received shutdown request... [2018-10-24 16:23:29,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:23:29,780 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:23:29,787 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:23:29,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:23:29 BoogieIcfgContainer [2018-10-24 16:23:29,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:23:29,789 INFO L168 Benchmark]: Toolchain (without parser) took 226103.99 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -509.5 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:29,790 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:23:29,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2636.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:29,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 879.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 814.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:29,792 INFO L168 Benchmark]: Boogie Preprocessor took 500.19 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:29,793 INFO L168 Benchmark]: RCFGBuilder took 13568.34 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 259.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -3.8 MB). Peak memory consumption was 616.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:29,794 INFO L168 Benchmark]: TraceAbstraction took 208512.04 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 184.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:29,806 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2636.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 879.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 814.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 500.19 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13568.34 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 259.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -3.8 MB). Peak memory consumption was 616.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208512.04 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 184.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 183]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 183). Cancelled while BasicCegarLoop was constructing difference of abstraction (158744states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1892 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.4s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 172.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10553 SDtfs, 29873 SDslu, 3737 SDs, 0 SdLazy, 65972 SolverSat, 15156 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 139.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1389 GetRequests, 1339 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173774occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.7s AutomataMinimizationTime, 14 MinimizatonAttempts, 48510 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 7985 NumberOfCodeBlocks, 7985 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7966 ConstructedInterpolants, 0 QuantifiedInterpolants, 9728658 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1758 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 10757/10827 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown