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_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:09:14,308 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:09:14,310 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:09:14,322 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:09:14,322 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:09:14,323 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:09:14,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:09:14,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:09:14,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:09:14,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:09:14,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:09:14,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:09:14,331 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:09:14,333 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:09:14,335 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:09:14,335 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:09:14,336 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:09:14,338 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:09:14,340 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:09:14,342 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:09:14,343 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:09:14,344 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:09:14,347 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:09:14,361 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 14:09:14,390 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:09:14,390 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:09:14,391 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:09:14,391 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:09:14,392 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:09:14,392 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:09:14,392 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:09:14,392 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:09:14,392 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:09:14,393 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:09:14,393 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:09:14,393 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:09:14,393 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:09:14,393 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:09:14,394 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:09:14,394 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:09:14,394 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:09:14,394 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:09:14,394 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:09:14,395 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:09:14,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:09:14,395 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:09:14,395 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:09:14,395 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:09:14,395 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:09:14,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:09:14,396 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:09:14,396 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:09:14,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:09:14,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:09:14,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:09:14,468 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:09:14,468 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:09:14,469 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label30_false-unreach-call.c [2018-10-24 14:09:14,548 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c170ad0ae/529dec387b814280824961eac810ed0e/FLAGcf85e1216 [2018-10-24 14:09:15,406 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:09:15,408 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label30_false-unreach-call.c [2018-10-24 14:09:15,439 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c170ad0ae/529dec387b814280824961eac810ed0e/FLAGcf85e1216 [2018-10-24 14:09:15,461 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c170ad0ae/529dec387b814280824961eac810ed0e [2018-10-24 14:09:15,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:09:15,477 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:09:15,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:09:15,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:09:15,487 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:09:15,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:09:15" (1/1) ... [2018-10-24 14:09:15,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d4e6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:15, skipping insertion in model container [2018-10-24 14:09:15,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:09:15" (1/1) ... [2018-10-24 14:09:15,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:09:15,680 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:09:17,092 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:09:17,097 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:09:17,846 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:09:17,884 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:09:17,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17 WrapperNode [2018-10-24 14:09:17,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:09:17,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:09:17,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:09:17,886 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:09:17,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (1/1) ... [2018-10-24 14:09:17,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (1/1) ... [2018-10-24 14:09:18,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:09:18,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:09:18,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:09:18,685 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:09:18,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (1/1) ... [2018-10-24 14:09:18,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (1/1) ... [2018-10-24 14:09:18,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (1/1) ... [2018-10-24 14:09:18,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (1/1) ... [2018-10-24 14:09:18,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (1/1) ... [2018-10-24 14:09:19,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (1/1) ... [2018-10-24 14:09:19,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (1/1) ... [2018-10-24 14:09:19,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:09:19,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:09:19,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:09:19,199 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:09:19,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (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 14:09:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:09:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:09:19,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:09:31,021 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:09:31,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:09:31 BoogieIcfgContainer [2018-10-24 14:09:31,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:09:31,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:09:31,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:09:31,026 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:09:31,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:09:15" (1/3) ... [2018-10-24 14:09:31,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f82a31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:09:31, skipping insertion in model container [2018-10-24 14:09:31,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:17" (2/3) ... [2018-10-24 14:09:31,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f82a31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:09:31, skipping insertion in model container [2018-10-24 14:09:31,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:09:31" (3/3) ... [2018-10-24 14:09:31,031 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label30_false-unreach-call.c [2018-10-24 14:09:31,040 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:09:31,051 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:09:31,069 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:09:31,119 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:09:31,119 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:09:31,120 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:09:31,120 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:09:31,120 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:09:31,120 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:09:31,120 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:09:31,120 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:09:31,121 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:09:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:09:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 14:09:31,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:31,182 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] [2018-10-24 14:09:31,185 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:31,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:31,191 INFO L82 PathProgramCache]: Analyzing trace with hash 183950178, now seen corresponding path program 1 times [2018-10-24 14:09:31,194 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:31,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:31,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:31,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:31,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:31,662 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 14:09:31,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:31,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:31,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:31,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:31,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:31,690 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:09:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:47,259 INFO L93 Difference]: Finished difference Result 3879 states and 7287 transitions. [2018-10-24 14:09:47,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:47,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-24 14:09:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:47,316 INFO L225 Difference]: With dead ends: 3879 [2018-10-24 14:09:47,316 INFO L226 Difference]: Without dead ends: 2773 [2018-10-24 14:09:47,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2018-10-24 14:09:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2742. [2018-10-24 14:09:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2742 states. [2018-10-24 14:09:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 4466 transitions. [2018-10-24 14:09:47,539 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 4466 transitions. Word has length 20 [2018-10-24 14:09:47,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:47,539 INFO L481 AbstractCegarLoop]: Abstraction has 2742 states and 4466 transitions. [2018-10-24 14:09:47,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 4466 transitions. [2018-10-24 14:09:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 14:09:47,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:47,548 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:47,549 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:47,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:47,549 INFO L82 PathProgramCache]: Analyzing trace with hash 300544526, now seen corresponding path program 1 times [2018-10-24 14:09:47,549 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:47,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:47,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:47,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:47,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-24 14:09:47,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:09:47,900 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 14:09:47,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:47,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:09:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:48,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:09:48,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 14:09:48,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:48,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:48,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:48,065 INFO L87 Difference]: Start difference. First operand 2742 states and 4466 transitions. Second operand 4 states. [2018-10-24 14:10:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:04,111 INFO L93 Difference]: Finished difference Result 10279 states and 16957 transitions. [2018-10-24 14:10:04,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:04,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-24 14:10:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:04,153 INFO L225 Difference]: With dead ends: 10279 [2018-10-24 14:10:04,153 INFO L226 Difference]: Without dead ends: 7539 [2018-10-24 14:10:04,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:04,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7539 states. [2018-10-24 14:10:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7539 to 5128. [2018-10-24 14:10:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5128 states. [2018-10-24 14:10:04,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5128 states to 5128 states and 8009 transitions. [2018-10-24 14:10:04,298 INFO L78 Accepts]: Start accepts. Automaton has 5128 states and 8009 transitions. Word has length 110 [2018-10-24 14:10:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:04,299 INFO L481 AbstractCegarLoop]: Abstraction has 5128 states and 8009 transitions. [2018-10-24 14:10:04,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5128 states and 8009 transitions. [2018-10-24 14:10:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-24 14:10:04,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:04,318 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:04,318 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:04,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:04,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1029685430, now seen corresponding path program 1 times [2018-10-24 14:10:04,319 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:04,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:04,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:04,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:04,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 14:10:05,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:05,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:05,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:10:05,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:10:05,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:10:05,078 INFO L87 Difference]: Start difference. First operand 5128 states and 8009 transitions. Second operand 5 states. [2018-10-24 14:10:05,496 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 14:10:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:18,462 INFO L93 Difference]: Finished difference Result 16563 states and 25362 transitions. [2018-10-24 14:10:18,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:10:18,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2018-10-24 14:10:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:18,508 INFO L225 Difference]: With dead ends: 16563 [2018-10-24 14:10:18,508 INFO L226 Difference]: Without dead ends: 11437 [2018-10-24 14:10:18,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:10:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11437 states. [2018-10-24 14:10:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11437 to 11436. [2018-10-24 14:10:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11436 states. [2018-10-24 14:10:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 15909 transitions. [2018-10-24 14:10:18,729 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 15909 transitions. Word has length 159 [2018-10-24 14:10:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:18,729 INFO L481 AbstractCegarLoop]: Abstraction has 11436 states and 15909 transitions. [2018-10-24 14:10:18,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:10:18,729 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 15909 transitions. [2018-10-24 14:10:18,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 14:10:18,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:18,735 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:18,736 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:18,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:18,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1977042759, now seen corresponding path program 1 times [2018-10-24 14:10:18,737 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:18,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:18,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:18,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:18,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 35 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-24 14:10:19,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:10:19,101 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 14:10:19,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:19,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:10:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:10:19,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:10:19,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 14:10:19,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:10:19,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:10:19,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:10:19,361 INFO L87 Difference]: Start difference. First operand 11436 states and 15909 transitions. Second operand 5 states. [2018-10-24 14:10:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:33,086 INFO L93 Difference]: Finished difference Result 43401 states and 61089 transitions. [2018-10-24 14:10:33,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:10:33,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-10-24 14:10:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:33,171 INFO L225 Difference]: With dead ends: 43401 [2018-10-24 14:10:33,171 INFO L226 Difference]: Without dead ends: 32755 [2018-10-24 14:10:33,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 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 14:10:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32755 states. [2018-10-24 14:10:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32755 to 25621. [2018-10-24 14:10:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25621 states. [2018-10-24 14:10:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 33098 transitions. [2018-10-24 14:10:33,626 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 33098 transitions. Word has length 185 [2018-10-24 14:10:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:33,627 INFO L481 AbstractCegarLoop]: Abstraction has 25621 states and 33098 transitions. [2018-10-24 14:10:33,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:10:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 33098 transitions. [2018-10-24 14:10:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 14:10:33,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:33,632 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:10:33,633 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:33,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2063229366, now seen corresponding path program 1 times [2018-10-24 14:10:33,633 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:33,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:33,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:33,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:33,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 14:10:33,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:33,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:10:33,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:10:33,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:10:33,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:10:33,884 INFO L87 Difference]: Start difference. First operand 25621 states and 33098 transitions. Second operand 3 states. [2018-10-24 14:10:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:40,828 INFO L93 Difference]: Finished difference Result 73301 states and 95285 transitions. [2018-10-24 14:10:40,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:10:40,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2018-10-24 14:10:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:40,933 INFO L225 Difference]: With dead ends: 73301 [2018-10-24 14:10:40,933 INFO L226 Difference]: Without dead ends: 48470 [2018-10-24 14:10:40,972 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 14:10:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48470 states. [2018-10-24 14:10:41,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48470 to 48469. [2018-10-24 14:10:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48469 states. [2018-10-24 14:10:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48469 states to 48469 states and 58804 transitions. [2018-10-24 14:10:41,843 INFO L78 Accepts]: Start accepts. Automaton has 48469 states and 58804 transitions. Word has length 196 [2018-10-24 14:10:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:41,843 INFO L481 AbstractCegarLoop]: Abstraction has 48469 states and 58804 transitions. [2018-10-24 14:10:41,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:10:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 48469 states and 58804 transitions. [2018-10-24 14:10:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-24 14:10:41,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:41,853 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:10:41,854 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:41,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:41,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1663665131, now seen corresponding path program 1 times [2018-10-24 14:10:41,854 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:41,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:41,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:41,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:41,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:42,511 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-24 14:10:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-24 14:10:42,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:10:42,675 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 14:10:42,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:42,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:10:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 14:10:42,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:10:42,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 14:10:43,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:43,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:43,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:43,001 INFO L87 Difference]: Start difference. First operand 48469 states and 58804 transitions. Second operand 4 states. [2018-10-24 14:10:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:53,049 INFO L93 Difference]: Finished difference Result 114312 states and 136549 transitions. [2018-10-24 14:10:53,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:53,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 313 [2018-10-24 14:10:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:53,170 INFO L225 Difference]: With dead ends: 114312 [2018-10-24 14:10:53,170 INFO L226 Difference]: Without dead ends: 66633 [2018-10-24 14:10:53,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66633 states. [2018-10-24 14:10:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66633 to 57138. [2018-10-24 14:10:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57138 states. [2018-10-24 14:10:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57138 states to 57138 states and 68104 transitions. [2018-10-24 14:10:53,882 INFO L78 Accepts]: Start accepts. Automaton has 57138 states and 68104 transitions. Word has length 313 [2018-10-24 14:10:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:53,883 INFO L481 AbstractCegarLoop]: Abstraction has 57138 states and 68104 transitions. [2018-10-24 14:10:53,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 57138 states and 68104 transitions. [2018-10-24 14:10:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-24 14:10:53,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:53,894 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:10:53,894 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:53,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:53,894 INFO L82 PathProgramCache]: Analyzing trace with hash -878020386, now seen corresponding path program 1 times [2018-10-24 14:10:53,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:53,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:53,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:53,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:53,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 14:10:54,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:54,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:10:54,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:54,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:54,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:54,274 INFO L87 Difference]: Start difference. First operand 57138 states and 68104 transitions. Second operand 4 states. [2018-10-24 14:11:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:02,166 INFO L93 Difference]: Finished difference Result 122940 states and 146167 transitions. [2018-10-24 14:11:02,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:02,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 342 [2018-10-24 14:11:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:02,254 INFO L225 Difference]: With dead ends: 122940 [2018-10-24 14:11:02,255 INFO L226 Difference]: Without dead ends: 57862 [2018-10-24 14:11:03,018 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 14:11:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57862 states. [2018-10-24 14:11:03,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57862 to 50769. [2018-10-24 14:11:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50769 states. [2018-10-24 14:11:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50769 states to 50769 states and 59099 transitions. [2018-10-24 14:11:03,564 INFO L78 Accepts]: Start accepts. Automaton has 50769 states and 59099 transitions. Word has length 342 [2018-10-24 14:11:03,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:03,565 INFO L481 AbstractCegarLoop]: Abstraction has 50769 states and 59099 transitions. [2018-10-24 14:11:03,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 50769 states and 59099 transitions. [2018-10-24 14:11:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-24 14:11:03,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:03,575 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:03,575 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:03,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash 673085932, now seen corresponding path program 1 times [2018-10-24 14:11:03,576 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:03,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:03,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:03,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:03,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 14:11:03,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:03,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:03,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:03,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:03,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:03,962 INFO L87 Difference]: Start difference. First operand 50769 states and 59099 transitions. Second operand 4 states. [2018-10-24 14:11:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:13,224 INFO L93 Difference]: Finished difference Result 130717 states and 153407 transitions. [2018-10-24 14:11:13,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:13,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2018-10-24 14:11:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:13,331 INFO L225 Difference]: With dead ends: 130717 [2018-10-24 14:11:13,331 INFO L226 Difference]: Without dead ends: 80738 [2018-10-24 14:11:13,374 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 14:11:13,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80738 states. [2018-10-24 14:11:14,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80738 to 78349. [2018-10-24 14:11:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78349 states. [2018-10-24 14:11:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78349 states to 78349 states and 89264 transitions. [2018-10-24 14:11:14,944 INFO L78 Accepts]: Start accepts. Automaton has 78349 states and 89264 transitions. Word has length 362 [2018-10-24 14:11:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:14,944 INFO L481 AbstractCegarLoop]: Abstraction has 78349 states and 89264 transitions. [2018-10-24 14:11:14,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 78349 states and 89264 transitions. [2018-10-24 14:11:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-24 14:11:14,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:14,950 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:14,950 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:14,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:14,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1646142113, now seen corresponding path program 1 times [2018-10-24 14:11:14,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:14,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:14,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:14,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:14,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-24 14:11:15,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:15,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:15,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:11:15,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:11:15,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:11:15,471 INFO L87 Difference]: Start difference. First operand 78349 states and 89264 transitions. Second operand 5 states. [2018-10-24 14:11:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:35,868 INFO L93 Difference]: Finished difference Result 284611 states and 323869 transitions. [2018-10-24 14:11:35,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:11:35,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2018-10-24 14:11:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:36,144 INFO L225 Difference]: With dead ends: 284611 [2018-10-24 14:11:36,145 INFO L226 Difference]: Without dead ends: 207049 [2018-10-24 14:11:36,208 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 14:11:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207049 states. [2018-10-24 14:11:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207049 to 195845. [2018-10-24 14:11:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195845 states. [2018-10-24 14:11:38,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195845 states to 195845 states and 218807 transitions. [2018-10-24 14:11:38,060 INFO L78 Accepts]: Start accepts. Automaton has 195845 states and 218807 transitions. Word has length 377 [2018-10-24 14:11:38,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:38,060 INFO L481 AbstractCegarLoop]: Abstraction has 195845 states and 218807 transitions. [2018-10-24 14:11:38,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:11:38,061 INFO L276 IsEmpty]: Start isEmpty. Operand 195845 states and 218807 transitions. [2018-10-24 14:11:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-24 14:11:38,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:38,071 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:38,071 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:38,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:38,071 INFO L82 PathProgramCache]: Analyzing trace with hash -816251699, now seen corresponding path program 1 times [2018-10-24 14:11:38,072 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:38,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:38,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:38,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:38,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 709 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-10-24 14:11:39,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:39,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:39,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:39,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:39,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:39,801 INFO L87 Difference]: Start difference. First operand 195845 states and 218807 transitions. Second operand 4 states. [2018-10-24 14:11:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:48,670 INFO L93 Difference]: Finished difference Result 388574 states and 434333 transitions. [2018-10-24 14:11:48,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:48,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 467 [2018-10-24 14:11:48,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:48,921 INFO L225 Difference]: With dead ends: 388574 [2018-10-24 14:11:48,921 INFO L226 Difference]: Without dead ends: 193519 [2018-10-24 14:11:50,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193519 states. [2018-10-24 14:11:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193519 to 191900. [2018-10-24 14:11:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191900 states. [2018-10-24 14:11:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191900 states to 191900 states and 207873 transitions. [2018-10-24 14:11:52,003 INFO L78 Accepts]: Start accepts. Automaton has 191900 states and 207873 transitions. Word has length 467 [2018-10-24 14:11:52,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:52,003 INFO L481 AbstractCegarLoop]: Abstraction has 191900 states and 207873 transitions. [2018-10-24 14:11:52,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand 191900 states and 207873 transitions. [2018-10-24 14:11:52,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-24 14:11:52,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:52,011 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-24 14:11:52,012 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:52,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:52,012 INFO L82 PathProgramCache]: Analyzing trace with hash 752697744, now seen corresponding path program 1 times [2018-10-24 14:11:52,012 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:52,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:52,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:52,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:52,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-10-24 14:11:52,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:52,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:52,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:11:52,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:11:52,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:11:52,466 INFO L87 Difference]: Start difference. First operand 191900 states and 207873 transitions. Second operand 4 states. [2018-10-24 14:12:10,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:10,757 INFO L93 Difference]: Finished difference Result 430443 states and 466792 transitions. [2018-10-24 14:12:10,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:10,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2018-10-24 14:12:10,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:11,068 INFO L225 Difference]: With dead ends: 430443 [2018-10-24 14:12:11,068 INFO L226 Difference]: Without dead ends: 239333 [2018-10-24 14:12:11,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239333 states. [2018-10-24 14:12:18,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239333 to 237626. [2018-10-24 14:12:18,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237626 states. [2018-10-24 14:12:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237626 states to 237626 states and 256937 transitions. [2018-10-24 14:12:19,064 INFO L78 Accepts]: Start accepts. Automaton has 237626 states and 256937 transitions. Word has length 478 [2018-10-24 14:12:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:19,064 INFO L481 AbstractCegarLoop]: Abstraction has 237626 states and 256937 transitions. [2018-10-24 14:12:19,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:12:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 237626 states and 256937 transitions. [2018-10-24 14:12:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-10-24 14:12:19,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:19,077 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-24 14:12:19,077 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:19,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:19,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1854620957, now seen corresponding path program 1 times [2018-10-24 14:12:19,077 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:19,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:19,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:19,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:19,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 369 proven. 18 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 14:12:19,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:12:19,921 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 14:12:19,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:20,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:12:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-10-24 14:12:21,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:12:21,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-10-24 14:12:21,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:12:21,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:12:21,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:12:21,034 INFO L87 Difference]: Start difference. First operand 237626 states and 256937 transitions. Second operand 8 states. [2018-10-24 14:12:33,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:33,456 INFO L93 Difference]: Finished difference Result 462753 states and 501129 transitions. [2018-10-24 14:12:33,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:12:33,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 578 [2018-10-24 14:12:33,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:33,750 INFO L225 Difference]: With dead ends: 462753 [2018-10-24 14:12:33,750 INFO L226 Difference]: Without dead ends: 225917 [2018-10-24 14:12:33,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 580 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:12:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225917 states. [2018-10-24 14:12:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225917 to 219448. [2018-10-24 14:12:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219448 states. [2018-10-24 14:12:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219448 states to 219448 states and 231474 transitions. [2018-10-24 14:12:36,318 INFO L78 Accepts]: Start accepts. Automaton has 219448 states and 231474 transitions. Word has length 578 [2018-10-24 14:12:36,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:36,318 INFO L481 AbstractCegarLoop]: Abstraction has 219448 states and 231474 transitions. [2018-10-24 14:12:36,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:12:36,319 INFO L276 IsEmpty]: Start isEmpty. Operand 219448 states and 231474 transitions. [2018-10-24 14:12:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-10-24 14:12:36,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:36,369 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:36,369 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:36,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1872031008, now seen corresponding path program 1 times [2018-10-24 14:12:36,370 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:36,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:36,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:36,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:36,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2073 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2018-10-24 14:12:38,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:38,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:12:38,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:12:38,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:12:38,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:12:38,149 INFO L87 Difference]: Start difference. First operand 219448 states and 231474 transitions. Second operand 3 states. [2018-10-24 14:12:44,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:44,432 INFO L93 Difference]: Finished difference Result 437304 states and 461242 transitions. [2018-10-24 14:12:44,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:12:44,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 910 [2018-10-24 14:12:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:44,703 INFO L225 Difference]: With dead ends: 437304 [2018-10-24 14:12:44,703 INFO L226 Difference]: Without dead ends: 218644 [2018-10-24 14:12:44,795 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 14:12:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218644 states. [2018-10-24 14:12:47,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218644 to 218644. [2018-10-24 14:12:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218644 states. [2018-10-24 14:12:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218644 states to 218644 states and 230537 transitions. [2018-10-24 14:12:47,458 INFO L78 Accepts]: Start accepts. Automaton has 218644 states and 230537 transitions. Word has length 910 [2018-10-24 14:12:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:47,459 INFO L481 AbstractCegarLoop]: Abstraction has 218644 states and 230537 transitions. [2018-10-24 14:12:47,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:12:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 218644 states and 230537 transitions. [2018-10-24 14:12:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2018-10-24 14:12:47,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:47,500 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:47,501 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:47,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:47,501 INFO L82 PathProgramCache]: Analyzing trace with hash 958306381, now seen corresponding path program 1 times [2018-10-24 14:12:47,501 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:47,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:47,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:47,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:47,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1233 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2018-10-24 14:12:48,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:48,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:12:48,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:48,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:48,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:48,916 INFO L87 Difference]: Start difference. First operand 218644 states and 230537 transitions. Second operand 4 states. [2018-10-24 14:12:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:58,936 INFO L93 Difference]: Finished difference Result 436514 states and 460277 transitions. [2018-10-24 14:12:58,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:58,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 911 [2018-10-24 14:12:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:59,174 INFO L225 Difference]: With dead ends: 436514 [2018-10-24 14:12:59,174 INFO L226 Difference]: Without dead ends: 218660 [2018-10-24 14:12:59,990 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 14:13:00,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218660 states. Received shutdown request... [2018-10-24 14:13:00,548 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:13:00,553 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:13:00,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:13:00 BoogieIcfgContainer [2018-10-24 14:13:00,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:13:00,555 INFO L168 Benchmark]: Toolchain (without parser) took 225078.96 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -485.6 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-10-24 14:13:00,556 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:13:00,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2406.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:13:00,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 797.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:13:00,559 INFO L168 Benchmark]: Boogie Preprocessor took 513.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:13:00,560 INFO L168 Benchmark]: RCFGBuilder took 11823.69 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 258.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 15.1 MB). Peak memory consumption was 612.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:13:00,561 INFO L168 Benchmark]: TraceAbstraction took 209531.02 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 192.7 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-10-24 14:13:00,567 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2406.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 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 797.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 513.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11823.69 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 258.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 15.1 MB). Peak memory consumption was 612.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209531.02 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 192.7 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 69). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 209.4s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 174.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10036 SDtfs, 34295 SDslu, 3640 SDs, 0 SdLazy, 68858 SolverSat, 16024 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 135.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1248 GetRequests, 1201 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237626occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.7s AutomataMinimizationTime, 14 MinimizatonAttempts, 49554 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 6594 NumberOfCodeBlocks, 6594 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6576 ConstructedInterpolants, 0 QuantifiedInterpolants, 7923027 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1619 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 8501/8593 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown