java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:01:03,414 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:01:03,416 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:01:03,438 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:01:03,439 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:01:03,440 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:01:03,441 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:01:03,445 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:01:03,447 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:01:03,449 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:01:03,452 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:01:03,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:01:03,453 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:01:03,454 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:01:03,458 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:01:03,459 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:01:03,460 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:01:03,469 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:01:03,471 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:01:03,477 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:01:03,478 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:01:03,481 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:01:03,485 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:01:03,499 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 [2018-10-23 18:01:03,519 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:01:03,519 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:01:03,520 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:01:03,520 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:01:03,520 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:01:03,521 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:01:03,521 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:01:03,521 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:01:03,521 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:01:03,521 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:01:03,522 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:01:03,522 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:01:03,522 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:01:03,522 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:01:03,522 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:01:03,523 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:01:03,523 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:01:03,523 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:01:03,523 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:01:03,523 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:01:03,524 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:01:03,524 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:01:03,524 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:01:03,524 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:01:03,524 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:01:03,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:01:03,525 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:01:03,525 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:01:03,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:01:03,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:01:03,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:01:03,602 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:01:03,602 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:01:03,603 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48_false-unreach-call.c [2018-10-23 18:01:03,665 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21edc45f4/d912a869b15d495e81677315c9bc468e/FLAG1abbce6e7 [2018-10-23 18:01:04,428 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:01:04,429 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label48_false-unreach-call.c [2018-10-23 18:01:04,460 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21edc45f4/d912a869b15d495e81677315c9bc468e/FLAG1abbce6e7 [2018-10-23 18:01:04,476 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21edc45f4/d912a869b15d495e81677315c9bc468e [2018-10-23 18:01:04,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:01:04,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:01:04,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:01:04,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:01:04,496 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:01:04,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:01:04" (1/1) ... [2018-10-23 18:01:04,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ddff4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:04, skipping insertion in model container [2018-10-23 18:01:04,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:01:04" (1/1) ... [2018-10-23 18:01:04,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:01:04,673 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:01:05,831 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:01:05,836 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:01:06,455 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:01:06,491 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:01:06,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06 WrapperNode [2018-10-23 18:01:06,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:01:06,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:01:06,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:01:06,494 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:01:06,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (1/1) ... [2018-10-23 18:01:06,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (1/1) ... [2018-10-23 18:01:07,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:01:07,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:01:07,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:01:07,165 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:01:07,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (1/1) ... [2018-10-23 18:01:07,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (1/1) ... [2018-10-23 18:01:07,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (1/1) ... [2018-10-23 18:01:07,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (1/1) ... [2018-10-23 18:01:07,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (1/1) ... [2018-10-23 18:01:07,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (1/1) ... [2018-10-23 18:01:07,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (1/1) ... [2018-10-23 18:01:07,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:01:07,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:01:07,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:01:07,474 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:01:07,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (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 [2018-10-23 18:01:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:01:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:01:07,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:01:16,818 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:01:16,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:01:16 BoogieIcfgContainer [2018-10-23 18:01:16,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:01:16,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:01:16,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:01:16,824 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:01:16,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:01:04" (1/3) ... [2018-10-23 18:01:16,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e49389d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:01:16, skipping insertion in model container [2018-10-23 18:01:16,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:01:06" (2/3) ... [2018-10-23 18:01:16,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e49389d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:01:16, skipping insertion in model container [2018-10-23 18:01:16,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:01:16" (3/3) ... [2018-10-23 18:01:16,828 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label48_false-unreach-call.c [2018-10-23 18:01:16,838 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:01:16,848 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:01:16,870 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:01:16,929 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:01:16,930 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:01:16,930 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:01:16,930 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:01:16,930 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:01:16,930 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:01:16,931 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:01:16,931 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:01:16,931 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:01:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 18:01:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-23 18:01:16,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:16,985 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:01:16,988 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:16,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:16,998 INFO L82 PathProgramCache]: Analyzing trace with hash -159296518, now seen corresponding path program 1 times [2018-10-23 18:01:17,000 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:17,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:17,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:17,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:17,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:17,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:01:17,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:01:17,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:01:17,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:01:17,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:17,342 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 18:01:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:29,770 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-23 18:01:29,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:01:29,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-23 18:01:29,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:29,812 INFO L225 Difference]: With dead ends: 3146 [2018-10-23 18:01:29,813 INFO L226 Difference]: Without dead ends: 2320 [2018-10-23 18:01:29,820 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 [2018-10-23 18:01:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-23 18:01:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-23 18:01:29,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-23 18:01:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3906 transitions. [2018-10-23 18:01:29,970 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3906 transitions. Word has length 11 [2018-10-23 18:01:29,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:01:29,970 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3906 transitions. [2018-10-23 18:01:29,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:01:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3906 transitions. [2018-10-23 18:01:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-23 18:01:29,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:29,974 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:01:29,975 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:29,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:29,975 INFO L82 PathProgramCache]: Analyzing trace with hash 138820631, now seen corresponding path program 1 times [2018-10-23 18:01:29,976 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:29,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:29,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:29,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:29,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:30,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:01:30,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:01:30,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:01:30,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:01:30,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:30,438 INFO L87 Difference]: Start difference. First operand 2320 states and 3906 transitions. Second operand 4 states. [2018-10-23 18:01:42,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:42,357 INFO L93 Difference]: Finished difference Result 9150 states and 15496 transitions. [2018-10-23 18:01:42,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:01:42,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2018-10-23 18:01:42,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:42,393 INFO L225 Difference]: With dead ends: 9150 [2018-10-23 18:01:42,393 INFO L226 Difference]: Without dead ends: 6832 [2018-10-23 18:01:42,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:42,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-23 18:01:42,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-23 18:01:42,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-23 18:01:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 9984 transitions. [2018-10-23 18:01:42,527 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 9984 transitions. Word has length 86 [2018-10-23 18:01:42,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:01:42,528 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 9984 transitions. [2018-10-23 18:01:42,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:01:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 9984 transitions. [2018-10-23 18:01:42,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-23 18:01:42,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:42,534 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:01:42,534 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:42,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:42,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1232946128, now seen corresponding path program 1 times [2018-10-23 18:01:42,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:42,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:42,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:42,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:42,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:42,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:01:42,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:01:42,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:01:42,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:01:42,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:42,926 INFO L87 Difference]: Start difference. First operand 6832 states and 9984 transitions. Second operand 4 states. [2018-10-23 18:01:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:51,156 INFO L93 Difference]: Finished difference Result 27215 states and 39824 transitions. [2018-10-23 18:01:51,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:01:51,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2018-10-23 18:01:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:51,272 INFO L225 Difference]: With dead ends: 27215 [2018-10-23 18:01:51,272 INFO L226 Difference]: Without dead ends: 20385 [2018-10-23 18:01:51,286 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 [2018-10-23 18:01:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20385 states. [2018-10-23 18:01:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20385 to 13600. [2018-10-23 18:01:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-10-23 18:01:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 17820 transitions. [2018-10-23 18:01:51,606 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 17820 transitions. Word has length 111 [2018-10-23 18:01:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:01:51,608 INFO L481 AbstractCegarLoop]: Abstraction has 13600 states and 17820 transitions. [2018-10-23 18:01:51,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:01:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 17820 transitions. [2018-10-23 18:01:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-23 18:01:51,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:51,623 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:01:51,623 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:51,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:51,624 INFO L82 PathProgramCache]: Analyzing trace with hash 873723500, now seen corresponding path program 1 times [2018-10-23 18:01:51,624 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:51,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:51,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:51,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:51,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:52,184 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-23 18:01:52,506 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-23 18:01:53,049 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-10-23 18:01:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 83 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:53,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:01:53,149 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 [2018-10-23 18:01:53,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:53,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:01:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:01:53,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:01:53,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 18:01:53,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:01:53,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:01:53,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:01:53,416 INFO L87 Difference]: Start difference. First operand 13600 states and 17820 transitions. Second operand 7 states. [2018-10-23 18:01:54,196 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-23 18:02:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:18,293 INFO L93 Difference]: Finished difference Result 58064 states and 73551 transitions. [2018-10-23 18:02:18,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 18:02:18,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2018-10-23 18:02:18,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:18,389 INFO L225 Difference]: With dead ends: 58064 [2018-10-23 18:02:18,389 INFO L226 Difference]: Without dead ends: 42207 [2018-10-23 18:02:18,415 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:02:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42207 states. [2018-10-23 18:02:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42207 to 27887. [2018-10-23 18:02:18,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27887 states. [2018-10-23 18:02:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27887 states to 27887 states and 33240 transitions. [2018-10-23 18:02:18,976 INFO L78 Accepts]: Start accepts. Automaton has 27887 states and 33240 transitions. Word has length 160 [2018-10-23 18:02:18,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:18,976 INFO L481 AbstractCegarLoop]: Abstraction has 27887 states and 33240 transitions. [2018-10-23 18:02:18,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:02:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 27887 states and 33240 transitions. [2018-10-23 18:02:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-23 18:02:18,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:18,980 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:18,980 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:18,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:18,981 INFO L82 PathProgramCache]: Analyzing trace with hash 210682417, now seen corresponding path program 1 times [2018-10-23 18:02:18,981 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:18,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:18,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:18,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:18,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-23 18:02:19,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:19,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:02:19,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:02:19,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:02:19,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:19,333 INFO L87 Difference]: Start difference. First operand 27887 states and 33240 transitions. Second operand 4 states. [2018-10-23 18:02:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:27,387 INFO L93 Difference]: Finished difference Result 61788 states and 73692 transitions. [2018-10-23 18:02:27,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:02:27,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2018-10-23 18:02:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:27,435 INFO L225 Difference]: With dead ends: 61788 [2018-10-23 18:02:27,436 INFO L226 Difference]: Without dead ends: 28604 [2018-10-23 18:02:27,473 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 [2018-10-23 18:02:27,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28604 states. [2018-10-23 18:02:27,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28604 to 28604. [2018-10-23 18:02:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28604 states. [2018-10-23 18:02:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28604 states to 28604 states and 31900 transitions. [2018-10-23 18:02:27,811 INFO L78 Accepts]: Start accepts. Automaton has 28604 states and 31900 transitions. Word has length 226 [2018-10-23 18:02:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:27,812 INFO L481 AbstractCegarLoop]: Abstraction has 28604 states and 31900 transitions. [2018-10-23 18:02:27,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:02:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 28604 states and 31900 transitions. [2018-10-23 18:02:27,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-23 18:02:27,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:27,818 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:02:27,819 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:27,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:27,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1535610863, now seen corresponding path program 1 times [2018-10-23 18:02:27,819 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:27,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:27,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:27,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:27,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:28,238 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 18:02:28,554 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2018-10-23 18:02:28,667 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-10-23 18:02:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-23 18:02:28,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:28,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:02:28,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:02:28,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:02:28,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:02:28,840 INFO L87 Difference]: Start difference. First operand 28604 states and 31900 transitions. Second operand 6 states. [2018-10-23 18:02:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:38,255 INFO L93 Difference]: Finished difference Result 69992 states and 78115 transitions. [2018-10-23 18:02:38,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:02:38,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2018-10-23 18:02:38,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:38,303 INFO L225 Difference]: With dead ends: 69992 [2018-10-23 18:02:38,303 INFO L226 Difference]: Without dead ends: 41390 [2018-10-23 18:02:38,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:02:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41390 states. [2018-10-23 18:02:38,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41390 to 40636. [2018-10-23 18:02:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40636 states. [2018-10-23 18:02:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40636 states to 40636 states and 44680 transitions. [2018-10-23 18:02:38,781 INFO L78 Accepts]: Start accepts. Automaton has 40636 states and 44680 transitions. Word has length 295 [2018-10-23 18:02:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:38,781 INFO L481 AbstractCegarLoop]: Abstraction has 40636 states and 44680 transitions. [2018-10-23 18:02:38,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:02:38,782 INFO L276 IsEmpty]: Start isEmpty. Operand 40636 states and 44680 transitions. [2018-10-23 18:02:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-23 18:02:38,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:38,792 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:38,793 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:38,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:38,793 INFO L82 PathProgramCache]: Analyzing trace with hash -356496373, now seen corresponding path program 1 times [2018-10-23 18:02:38,794 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:38,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:38,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:38,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:38,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-23 18:02:39,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:39,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:02:39,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:02:39,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:02:39,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:39,140 INFO L87 Difference]: Start difference. First operand 40636 states and 44680 transitions. Second operand 4 states. [2018-10-23 18:02:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:47,339 INFO L93 Difference]: Finished difference Result 139926 states and 154516 transitions. [2018-10-23 18:02:47,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:02:47,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 378 [2018-10-23 18:02:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:47,442 INFO L225 Difference]: With dead ends: 139926 [2018-10-23 18:02:47,442 INFO L226 Difference]: Without dead ends: 100044 [2018-10-23 18:02:47,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:02:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100044 states. [2018-10-23 18:02:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100044 to 91772. [2018-10-23 18:02:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91772 states. [2018-10-23 18:02:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91772 states to 91772 states and 100596 transitions. [2018-10-23 18:02:48,315 INFO L78 Accepts]: Start accepts. Automaton has 91772 states and 100596 transitions. Word has length 378 [2018-10-23 18:02:48,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:48,315 INFO L481 AbstractCegarLoop]: Abstraction has 91772 states and 100596 transitions. [2018-10-23 18:02:48,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:02:48,316 INFO L276 IsEmpty]: Start isEmpty. Operand 91772 states and 100596 transitions. [2018-10-23 18:02:48,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-23 18:02:48,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:48,326 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:48,326 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:48,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:48,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1212554303, now seen corresponding path program 1 times [2018-10-23 18:02:48,327 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:48,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:48,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:48,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:48,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-23 18:02:48,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:02:48,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:02:48,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:02:48,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:02:48,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:02:48,643 INFO L87 Difference]: Start difference. First operand 91772 states and 100596 transitions. Second operand 3 states. [2018-10-23 18:02:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:02:55,525 INFO L93 Difference]: Finished difference Result 183542 states and 201190 transitions. [2018-10-23 18:02:55,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:02:55,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 382 [2018-10-23 18:02:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:02:55,619 INFO L225 Difference]: With dead ends: 183542 [2018-10-23 18:02:55,620 INFO L226 Difference]: Without dead ends: 91772 [2018-10-23 18:02:55,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:02:55,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91772 states. [2018-10-23 18:02:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91772 to 89516. [2018-10-23 18:02:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89516 states. [2018-10-23 18:02:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89516 states to 89516 states and 95298 transitions. [2018-10-23 18:02:56,384 INFO L78 Accepts]: Start accepts. Automaton has 89516 states and 95298 transitions. Word has length 382 [2018-10-23 18:02:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:02:56,384 INFO L481 AbstractCegarLoop]: Abstraction has 89516 states and 95298 transitions. [2018-10-23 18:02:56,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:02:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 89516 states and 95298 transitions. [2018-10-23 18:02:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-23 18:02:56,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:02:56,396 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:02:56,397 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:02:56,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:02:56,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1192995185, now seen corresponding path program 1 times [2018-10-23 18:02:56,397 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:02:56,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:02:56,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:56,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:56,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:02:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 311 proven. 69 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 18:02:56,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:02:56,814 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 [2018-10-23 18:02:56,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:02:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:02:56,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:02:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 311 proven. 69 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 18:02:57,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:02:57,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-23 18:02:57,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:02:57,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:02:57,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:02:57,232 INFO L87 Difference]: Start difference. First operand 89516 states and 95298 transitions. Second operand 6 states. [2018-10-23 18:03:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:11,976 INFO L93 Difference]: Finished difference Result 197078 states and 210053 transitions. [2018-10-23 18:03:11,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:03:11,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 414 [2018-10-23 18:03:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:12,115 INFO L225 Difference]: With dead ends: 197078 [2018-10-23 18:03:12,115 INFO L226 Difference]: Without dead ends: 107564 [2018-10-23 18:03:12,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 413 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:03:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107564 states. [2018-10-23 18:03:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107564 to 104556. [2018-10-23 18:03:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104556 states. [2018-10-23 18:03:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104556 states to 104556 states and 110155 transitions. [2018-10-23 18:03:13,321 INFO L78 Accepts]: Start accepts. Automaton has 104556 states and 110155 transitions. Word has length 414 [2018-10-23 18:03:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:13,322 INFO L481 AbstractCegarLoop]: Abstraction has 104556 states and 110155 transitions. [2018-10-23 18:03:13,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:03:13,323 INFO L276 IsEmpty]: Start isEmpty. Operand 104556 states and 110155 transitions. [2018-10-23 18:03:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-10-23 18:03:13,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:13,335 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:03:13,335 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:13,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:13,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1627232402, now seen corresponding path program 1 times [2018-10-23 18:03:13,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:13,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:13,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:13,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:13,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-23 18:03:13,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:03:13,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:03:13,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:03:13,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:03:13,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:13,820 INFO L87 Difference]: Start difference. First operand 104556 states and 110155 transitions. Second operand 4 states. [2018-10-23 18:03:22,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:22,006 INFO L93 Difference]: Finished difference Result 214374 states and 225660 transitions. [2018-10-23 18:03:22,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:03:22,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 448 [2018-10-23 18:03:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:22,118 INFO L225 Difference]: With dead ends: 214374 [2018-10-23 18:03:22,118 INFO L226 Difference]: Without dead ends: 109820 [2018-10-23 18:03:22,166 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 [2018-10-23 18:03:22,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109820 states. [2018-10-23 18:03:22,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109820 to 106812. [2018-10-23 18:03:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106812 states. [2018-10-23 18:03:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106812 states to 106812 states and 112122 transitions. [2018-10-23 18:03:23,005 INFO L78 Accepts]: Start accepts. Automaton has 106812 states and 112122 transitions. Word has length 448 [2018-10-23 18:03:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:23,006 INFO L481 AbstractCegarLoop]: Abstraction has 106812 states and 112122 transitions. [2018-10-23 18:03:23,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:03:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 106812 states and 112122 transitions. [2018-10-23 18:03:23,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-10-23 18:03:23,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:23,017 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:03:23,017 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:23,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:23,017 INFO L82 PathProgramCache]: Analyzing trace with hash 734228447, now seen corresponding path program 1 times [2018-10-23 18:03:23,017 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:23,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:23,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:23,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:23,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-10-23 18:03:23,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:03:23,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:03:23,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:03:23,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:03:23,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:03:23,409 INFO L87 Difference]: Start difference. First operand 106812 states and 112122 transitions. Second operand 3 states. [2018-10-23 18:03:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:29,120 INFO L93 Difference]: Finished difference Result 224902 states and 236713 transitions. [2018-10-23 18:03:29,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:03:29,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 459 [2018-10-23 18:03:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:29,277 INFO L225 Difference]: With dead ends: 224902 [2018-10-23 18:03:29,277 INFO L226 Difference]: Without dead ends: 118092 [2018-10-23 18:03:29,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:03:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118092 states. [2018-10-23 18:03:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118092 to 116588. [2018-10-23 18:03:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116588 states. [2018-10-23 18:03:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116588 states to 116588 states and 122638 transitions. [2018-10-23 18:03:30,415 INFO L78 Accepts]: Start accepts. Automaton has 116588 states and 122638 transitions. Word has length 459 [2018-10-23 18:03:30,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:30,416 INFO L481 AbstractCegarLoop]: Abstraction has 116588 states and 122638 transitions. [2018-10-23 18:03:30,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:03:30,416 INFO L276 IsEmpty]: Start isEmpty. Operand 116588 states and 122638 transitions. [2018-10-23 18:03:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-23 18:03:30,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:30,424 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:03:30,424 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:30,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:30,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1784193791, now seen corresponding path program 1 times [2018-10-23 18:03:30,425 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:30,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:30,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:30,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:30,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:30,795 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 18:03:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-23 18:03:31,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:03:31,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:03:31,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:03:31,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:03:31,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:03:31,050 INFO L87 Difference]: Start difference. First operand 116588 states and 122638 transitions. Second operand 4 states. [2018-10-23 18:03:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:03:38,848 INFO L93 Difference]: Finished difference Result 230917 states and 242967 transitions. [2018-10-23 18:03:38,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:03:38,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 467 [2018-10-23 18:03:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:03:39,001 INFO L225 Difference]: With dead ends: 230917 [2018-10-23 18:03:39,002 INFO L226 Difference]: Without dead ends: 108303 [2018-10-23 18:03:39,077 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 [2018-10-23 18:03:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108303 states. [2018-10-23 18:03:39,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108303 to 105295. [2018-10-23 18:03:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105295 states. [2018-10-23 18:03:40,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105295 states to 105295 states and 108959 transitions. [2018-10-23 18:03:40,025 INFO L78 Accepts]: Start accepts. Automaton has 105295 states and 108959 transitions. Word has length 467 [2018-10-23 18:03:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:03:40,026 INFO L481 AbstractCegarLoop]: Abstraction has 105295 states and 108959 transitions. [2018-10-23 18:03:40,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:03:40,026 INFO L276 IsEmpty]: Start isEmpty. Operand 105295 states and 108959 transitions. [2018-10-23 18:03:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-10-23 18:03:40,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:03:40,035 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:03:40,035 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:03:40,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:03:40,035 INFO L82 PathProgramCache]: Analyzing trace with hash -2037490819, now seen corresponding path program 1 times [2018-10-23 18:03:40,035 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:03:40,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:03:40,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:40,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:40,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:03:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 537 proven. 86 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-10-23 18:03:40,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:03:40,720 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 [2018-10-23 18:03:41,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:03:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:03:41,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:03:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 537 proven. 86 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-10-23 18:03:42,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:03:42,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-23 18:03:42,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:03:42,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:03:42,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:03:42,229 INFO L87 Difference]: Start difference. First operand 105295 states and 108959 transitions. Second operand 7 states. [2018-10-23 18:04:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:04:01,832 INFO L93 Difference]: Finished difference Result 289556 states and 299427 transitions. [2018-10-23 18:04:01,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:04:01,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 524 [2018-10-23 18:04:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:04:02,014 INFO L225 Difference]: With dead ends: 289556 [2018-10-23 18:04:02,014 INFO L226 Difference]: Without dead ends: 185015 [2018-10-23 18:04:02,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 522 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:04:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185015 states. [2018-10-23 18:04:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185015 to 146657. [2018-10-23 18:04:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146657 states. [2018-10-23 18:04:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146657 states to 146657 states and 150833 transitions. [2018-10-23 18:04:03,462 INFO L78 Accepts]: Start accepts. Automaton has 146657 states and 150833 transitions. Word has length 524 [2018-10-23 18:04:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:04:03,463 INFO L481 AbstractCegarLoop]: Abstraction has 146657 states and 150833 transitions. [2018-10-23 18:04:03,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:04:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 146657 states and 150833 transitions. [2018-10-23 18:04:03,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2018-10-23 18:04:03,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:03,472 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:04:03,472 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:03,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:03,473 INFO L82 PathProgramCache]: Analyzing trace with hash -767249028, now seen corresponding path program 1 times [2018-10-23 18:04:03,473 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:03,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:03,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:03,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:03,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-23 18:04:04,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:04:04,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:04:04,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:04:04,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:04:04,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:04:04,435 INFO L87 Difference]: Start difference. First operand 146657 states and 150833 transitions. Second operand 4 states. [2018-10-23 18:04:11,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:04:11,766 INFO L93 Difference]: Finished difference Result 305344 states and 314249 transitions. [2018-10-23 18:04:11,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:04:11,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 545 [2018-10-23 18:04:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:04:11,959 INFO L225 Difference]: With dead ends: 305344 [2018-10-23 18:04:11,959 INFO L226 Difference]: Without dead ends: 160193 [2018-10-23 18:04:12,025 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 [2018-10-23 18:04:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160193 states. [2018-10-23 18:04:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160193 to 158689. [2018-10-23 18:04:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158689 states. [2018-10-23 18:04:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158689 states to 158689 states and 162782 transitions. [2018-10-23 18:04:14,077 INFO L78 Accepts]: Start accepts. Automaton has 158689 states and 162782 transitions. Word has length 545 [2018-10-23 18:04:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:04:14,077 INFO L481 AbstractCegarLoop]: Abstraction has 158689 states and 162782 transitions. [2018-10-23 18:04:14,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:04:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 158689 states and 162782 transitions. [2018-10-23 18:04:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2018-10-23 18:04:14,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:14,089 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:04:14,089 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:14,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:14,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1339496796, now seen corresponding path program 1 times [2018-10-23 18:04:14,090 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:14,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:14,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:14,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:14,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:14,595 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 18:04:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 621 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2018-10-23 18:04:14,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:04:14,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:04:14,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:04:14,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:04:14,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:04:14,724 INFO L87 Difference]: Start difference. First operand 158689 states and 162782 transitions. Second operand 4 states. [2018-10-23 18:04:23,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:04:23,889 INFO L93 Difference]: Finished difference Result 324896 states and 333248 transitions. [2018-10-23 18:04:23,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:04:23,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 613 [2018-10-23 18:04:23,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:04:24,059 INFO L225 Difference]: With dead ends: 324896 [2018-10-23 18:04:24,059 INFO L226 Difference]: Without dead ends: 166960 [2018-10-23 18:04:24,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:04:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166960 states. [2018-10-23 18:04:25,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166960 to 151920. [2018-10-23 18:04:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151920 states. [2018-10-23 18:04:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151920 states to 151920 states and 155437 transitions. [2018-10-23 18:04:25,442 INFO L78 Accepts]: Start accepts. Automaton has 151920 states and 155437 transitions. Word has length 613 [2018-10-23 18:04:25,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:04:25,442 INFO L481 AbstractCegarLoop]: Abstraction has 151920 states and 155437 transitions. [2018-10-23 18:04:25,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:04:25,443 INFO L276 IsEmpty]: Start isEmpty. Operand 151920 states and 155437 transitions. [2018-10-23 18:04:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2018-10-23 18:04:25,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:25,458 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:04:25,458 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:25,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:25,459 INFO L82 PathProgramCache]: Analyzing trace with hash 335490844, now seen corresponding path program 1 times [2018-10-23 18:04:25,459 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:25,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:25,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:25,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:25,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:26,247 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-23 18:04:26,660 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-23 18:04:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 388 proven. 144 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-23 18:04:28,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:04:28,515 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 [2018-10-23 18:04:28,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:28,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:04:29,354 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-10-23 18:04:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 477 proven. 55 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-23 18:04:31,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:04:31,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-23 18:04:31,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 18:04:31,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 18:04:31,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:04:31,385 INFO L87 Difference]: Start difference. First operand 151920 states and 155437 transitions. Second operand 10 states. Received shutdown request... [2018-10-23 18:04:55,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 18:04:55,496 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:04:55,501 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:04:55,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:04:55 BoogieIcfgContainer [2018-10-23 18:04:55,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:04:55,502 INFO L168 Benchmark]: Toolchain (without parser) took 231013.87 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 181.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 18:04:55,503 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-10-23 18:04:55,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2001.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:04:55,505 INFO L168 Benchmark]: Boogie Procedure Inliner took 670.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -983.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:04:55,506 INFO L168 Benchmark]: Boogie Preprocessor took 307.68 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: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:04:55,506 INFO L168 Benchmark]: RCFGBuilder took 9345.86 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 232.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -208.4 MB). Peak memory consumption was 661.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:04:55,507 INFO L168 Benchmark]: TraceAbstraction took 218681.26 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 673.2 MB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 18:04:55,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 2001.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 670.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -983.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.68 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: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9345.86 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 232.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -208.4 MB). Peak memory consumption was 661.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218681.26 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 673.2 MB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (151920states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (200729 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 218.5s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 188.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9836 SDtfs, 41802 SDslu, 1249 SDs, 0 SdLazy, 92199 SolverSat, 14481 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 151.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1836 GetRequests, 1767 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158689occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 12.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 97817 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 7525 NumberOfCodeBlocks, 7525 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 7505 ConstructedInterpolants, 87 QuantifiedInterpolants, 14537684 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2315 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 20 InterpolantComputations, 13 PerfectInterpolantSequences, 8141/8655 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown