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/Problem17_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:31:01,422 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:31:01,424 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:31:01,441 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:31:01,441 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:31:01,442 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:31:01,446 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:31:01,449 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:31:01,450 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:31:01,452 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:31:01,453 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:31:01,454 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:31:01,456 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:31:01,457 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:31:01,458 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:31:01,461 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:31:01,463 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:31:01,471 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:31:01,473 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:31:01,478 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:31:01,480 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:31:01,481 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:31:01,485 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:31:01,486 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:31:01,486 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:31:01,487 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:31:01,488 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:31:01,491 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:31:01,492 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:31:01,493 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:31:01,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:31:01,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:31:01,497 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:31:01,518 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:31:01,519 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:31:01,519 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:31:01,520 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:31:01,520 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:31:01,520 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:31:01,521 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:31:01,521 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:31:01,521 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:31:01,521 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:31:01,521 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:31:01,522 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:31:01,522 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:31:01,522 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:31:01,522 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:31:01,522 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:31:01,523 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:31:01,523 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:31:01,523 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:31:01,523 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:31:01,523 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:31:01,524 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:31:01,524 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:31:01,524 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:31:01,524 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:31:01,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:31:01,525 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:31:01,525 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:31:01,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:31:01,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:31:01,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:31:01,598 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:31:01,598 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:31:01,599 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label34_false-unreach-call.c [2018-10-24 14:31:01,663 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ead33aea/628c8fd990af4a8aa7dedda34c3b0960/FLAG9e3f4c700 [2018-10-24 14:31:02,456 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:31:02,457 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label34_false-unreach-call.c [2018-10-24 14:31:02,479 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ead33aea/628c8fd990af4a8aa7dedda34c3b0960/FLAG9e3f4c700 [2018-10-24 14:31:02,501 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ead33aea/628c8fd990af4a8aa7dedda34c3b0960 [2018-10-24 14:31:02,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:31:02,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:31:02,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:31:02,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:31:02,523 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:31:02,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:31:02" (1/1) ... [2018-10-24 14:31:02,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:02, skipping insertion in model container [2018-10-24 14:31:02,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:31:02" (1/1) ... [2018-10-24 14:31:02,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:31:02,655 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:31:03,628 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:31:03,632 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:31:04,068 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:31:04,091 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:31:04,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04 WrapperNode [2018-10-24 14:31:04,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:31:04,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:31:04,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:31:04,094 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:31:04,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... [2018-10-24 14:31:04,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... [2018-10-24 14:31:04,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:31:04,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:31:04,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:31:04,597 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:31:04,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... [2018-10-24 14:31:04,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... [2018-10-24 14:31:04,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... [2018-10-24 14:31:04,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... [2018-10-24 14:31:04,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... [2018-10-24 14:31:04,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... [2018-10-24 14:31:04,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... [2018-10-24 14:31:04,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:31:04,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:31:04,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:31:04,918 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:31:04,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:31:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:31:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:31:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:31:14,663 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:31:14,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:31:14 BoogieIcfgContainer [2018-10-24 14:31:14,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:31:14,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:31:14,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:31:14,671 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:31:14,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:31:02" (1/3) ... [2018-10-24 14:31:14,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e23a5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:31:14, skipping insertion in model container [2018-10-24 14:31:14,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:31:04" (2/3) ... [2018-10-24 14:31:14,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e23a5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:31:14, skipping insertion in model container [2018-10-24 14:31:14,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:31:14" (3/3) ... [2018-10-24 14:31:14,676 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label34_false-unreach-call.c [2018-10-24 14:31:14,686 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:31:14,695 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:31:14,713 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:31:14,753 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:31:14,753 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:31:14,754 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:31:14,754 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:31:14,754 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:31:14,754 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:31:14,754 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:31:14,754 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:31:14,754 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:31:14,790 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 14:31:14,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 14:31:14,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:14,797 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:31:14,800 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:14,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:14,806 INFO L82 PathProgramCache]: Analyzing trace with hash 183950178, now seen corresponding path program 1 times [2018-10-24 14:31:14,808 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:14,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:14,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:14,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:14,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:15,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:31:15,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:31:15,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:31:15,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:31:15,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:31:15,255 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 14:31:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:29,808 INFO L93 Difference]: Finished difference Result 2122 states and 3950 transitions. [2018-10-24 14:31:29,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:31:29,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-24 14:31:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:29,848 INFO L225 Difference]: With dead ends: 2122 [2018-10-24 14:31:29,848 INFO L226 Difference]: Without dead ends: 1524 [2018-10-24 14:31:29,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:31:29,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2018-10-24 14:31:29,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1497. [2018-10-24 14:31:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2018-10-24 14:31:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2656 transitions. [2018-10-24 14:31:29,983 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2656 transitions. Word has length 20 [2018-10-24 14:31:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:29,983 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 2656 transitions. [2018-10-24 14:31:29,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:31:29,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2656 transitions. [2018-10-24 14:31:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 14:31:29,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:29,988 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:31:29,989 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:29,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:29,989 INFO L82 PathProgramCache]: Analyzing trace with hash -727426299, now seen corresponding path program 1 times [2018-10-24 14:31:29,989 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:29,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:29,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:29,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:29,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:30,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:31:30,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:31:30,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:31:30,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:31:30,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:31:30,269 INFO L87 Difference]: Start difference. First operand 1497 states and 2656 transitions. Second operand 4 states. [2018-10-24 14:31:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:44,219 INFO L93 Difference]: Finished difference Result 5604 states and 10151 transitions. [2018-10-24 14:31:44,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:31:44,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2018-10-24 14:31:44,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:44,243 INFO L225 Difference]: With dead ends: 5604 [2018-10-24 14:31:44,243 INFO L226 Difference]: Without dead ends: 4109 [2018-10-24 14:31:44,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:31:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2018-10-24 14:31:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4098. [2018-10-24 14:31:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4098 states. [2018-10-24 14:31:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6039 transitions. [2018-10-24 14:31:44,332 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6039 transitions. Word has length 95 [2018-10-24 14:31:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:44,333 INFO L481 AbstractCegarLoop]: Abstraction has 4098 states and 6039 transitions. [2018-10-24 14:31:44,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:31:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6039 transitions. [2018-10-24 14:31:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-24 14:31:44,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:44,341 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:31:44,341 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:44,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:44,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1303718491, now seen corresponding path program 1 times [2018-10-24 14:31:44,342 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:44,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:44,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:44,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:44,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:44,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:31:44,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:31:44,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:31:44,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:31:44,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:31:44,797 INFO L87 Difference]: Start difference. First operand 4098 states and 6039 transitions. Second operand 4 states. [2018-10-24 14:31:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:52,372 INFO L93 Difference]: Finished difference Result 15444 states and 23003 transitions. [2018-10-24 14:31:52,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:31:52,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2018-10-24 14:31:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:52,424 INFO L225 Difference]: With dead ends: 15444 [2018-10-24 14:31:52,424 INFO L226 Difference]: Without dead ends: 11348 [2018-10-24 14:31:52,431 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 [2018-10-24 14:31:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11348 states. [2018-10-24 14:31:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11348 to 11348. [2018-10-24 14:31:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11348 states. [2018-10-24 14:31:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11348 states to 11348 states and 14691 transitions. [2018-10-24 14:31:52,631 INFO L78 Accepts]: Start accepts. Automaton has 11348 states and 14691 transitions. Word has length 150 [2018-10-24 14:31:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:52,633 INFO L481 AbstractCegarLoop]: Abstraction has 11348 states and 14691 transitions. [2018-10-24 14:31:52,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:31:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 11348 states and 14691 transitions. [2018-10-24 14:31:52,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-24 14:31:52,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:52,641 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:31:52,641 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:52,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:52,642 INFO L82 PathProgramCache]: Analyzing trace with hash 691492752, now seen corresponding path program 1 times [2018-10-24 14:31:52,643 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:52,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:52,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:52,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:52,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-24 14:31:53,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:31:53,070 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:31:53,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:53,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:31:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 14:31:53,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:31:53,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 14:31:53,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:31:53,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:31:53,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:31:53,355 INFO L87 Difference]: Start difference. First operand 11348 states and 14691 transitions. Second operand 5 states. [2018-10-24 14:32:00,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:00,357 INFO L93 Difference]: Finished difference Result 23541 states and 30673 transitions. [2018-10-24 14:32:00,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:32:00,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2018-10-24 14:32:00,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:00,410 INFO L225 Difference]: With dead ends: 23541 [2018-10-24 14:32:00,411 INFO L226 Difference]: Without dead ends: 12195 [2018-10-24 14:32:00,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:32:00,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12195 states. [2018-10-24 14:32:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12195 to 11343. [2018-10-24 14:32:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11343 states. [2018-10-24 14:32:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11343 states to 11343 states and 14124 transitions. [2018-10-24 14:32:00,631 INFO L78 Accepts]: Start accepts. Automaton has 11343 states and 14124 transitions. Word has length 225 [2018-10-24 14:32:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:00,632 INFO L481 AbstractCegarLoop]: Abstraction has 11343 states and 14124 transitions. [2018-10-24 14:32:00,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:32:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 11343 states and 14124 transitions. [2018-10-24 14:32:00,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-24 14:32:00,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:00,637 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:00,638 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:00,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:00,638 INFO L82 PathProgramCache]: Analyzing trace with hash 763600966, now seen corresponding path program 1 times [2018-10-24 14:32:00,638 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:00,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:00,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:00,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:00,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 35 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:32:01,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:32:01,199 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:32:01,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:01,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:32:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 35 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:32:01,659 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:32:01,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-24 14:32:01,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:32:01,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:32:01,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:32:01,664 INFO L87 Difference]: Start difference. First operand 11343 states and 14124 transitions. Second operand 7 states. [2018-10-24 14:32:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:17,103 INFO L93 Difference]: Finished difference Result 35142 states and 44440 transitions. [2018-10-24 14:32:17,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:32:17,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2018-10-24 14:32:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:17,159 INFO L225 Difference]: With dead ends: 35142 [2018-10-24 14:32:17,159 INFO L226 Difference]: Without dead ends: 19469 [2018-10-24 14:32:17,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:32:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19469 states. [2018-10-24 14:32:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19469 to 16870. [2018-10-24 14:32:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16870 states. [2018-10-24 14:32:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16870 states to 16870 states and 19645 transitions. [2018-10-24 14:32:17,467 INFO L78 Accepts]: Start accepts. Automaton has 16870 states and 19645 transitions. Word has length 242 [2018-10-24 14:32:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:17,468 INFO L481 AbstractCegarLoop]: Abstraction has 16870 states and 19645 transitions. [2018-10-24 14:32:17,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:32:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 16870 states and 19645 transitions. [2018-10-24 14:32:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-24 14:32:17,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:17,477 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:17,477 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:17,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:17,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1348567370, now seen corresponding path program 1 times [2018-10-24 14:32:17,478 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:17,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:17,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:17,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:17,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-24 14:32:17,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:32:17,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:32:17,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:32:17,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:32:17,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:32:17,926 INFO L87 Difference]: Start difference. First operand 16870 states and 19645 transitions. Second operand 4 states. [2018-10-24 14:32:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:23,969 INFO L93 Difference]: Finished difference Result 42294 states and 50330 transitions. [2018-10-24 14:32:23,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:32:23,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2018-10-24 14:32:23,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:24,013 INFO L225 Difference]: With dead ends: 42294 [2018-10-24 14:32:24,013 INFO L226 Difference]: Without dead ends: 23238 [2018-10-24 14:32:24,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:32:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23238 states. [2018-10-24 14:32:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23238 to 18535. [2018-10-24 14:32:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18535 states. [2018-10-24 14:32:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18535 states to 18535 states and 21287 transitions. [2018-10-24 14:32:24,303 INFO L78 Accepts]: Start accepts. Automaton has 18535 states and 21287 transitions. Word has length 335 [2018-10-24 14:32:24,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:24,304 INFO L481 AbstractCegarLoop]: Abstraction has 18535 states and 21287 transitions. [2018-10-24 14:32:24,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:32:24,304 INFO L276 IsEmpty]: Start isEmpty. Operand 18535 states and 21287 transitions. [2018-10-24 14:32:24,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-24 14:32:24,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:24,314 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:24,314 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:24,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:24,314 INFO L82 PathProgramCache]: Analyzing trace with hash -537873477, now seen corresponding path program 1 times [2018-10-24 14:32:24,315 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:24,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:24,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:24,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:24,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-24 14:32:24,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:32:24,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:32:24,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:32:24,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:32:24,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:32:24,756 INFO L87 Difference]: Start difference. First operand 18535 states and 21287 transitions. Second operand 4 states. [2018-10-24 14:32:32,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:32,205 INFO L93 Difference]: Finished difference Result 56685 states and 64810 transitions. [2018-10-24 14:32:32,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:32:32,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 364 [2018-10-24 14:32:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:32,274 INFO L225 Difference]: With dead ends: 56685 [2018-10-24 14:32:32,275 INFO L226 Difference]: Without dead ends: 38152 [2018-10-24 14:32:32,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:32:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38152 states. [2018-10-24 14:32:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38152 to 37715. [2018-10-24 14:32:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37715 states. [2018-10-24 14:32:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37715 states to 37715 states and 42211 transitions. [2018-10-24 14:32:33,096 INFO L78 Accepts]: Start accepts. Automaton has 37715 states and 42211 transitions. Word has length 364 [2018-10-24 14:32:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:33,097 INFO L481 AbstractCegarLoop]: Abstraction has 37715 states and 42211 transitions. [2018-10-24 14:32:33,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:32:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 37715 states and 42211 transitions. [2018-10-24 14:32:33,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-10-24 14:32:33,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:33,116 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:33,117 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:33,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:33,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1196298390, now seen corresponding path program 1 times [2018-10-24 14:32:33,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:33,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:33,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:33,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:33,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-24 14:32:33,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:32:33,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:32:33,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:32:33,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:32:33,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:32:33,526 INFO L87 Difference]: Start difference. First operand 37715 states and 42211 transitions. Second operand 3 states. [2018-10-24 14:32:37,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:37,064 INFO L93 Difference]: Finished difference Result 83944 states and 94104 transitions. [2018-10-24 14:32:37,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:32:37,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 435 [2018-10-24 14:32:37,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:37,108 INFO L225 Difference]: With dead ends: 83944 [2018-10-24 14:32:37,108 INFO L226 Difference]: Without dead ends: 43219 [2018-10-24 14:32:37,134 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 [2018-10-24 14:32:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43219 states. [2018-10-24 14:32:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43219 to 40224. [2018-10-24 14:32:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40224 states. [2018-10-24 14:32:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40224 states to 40224 states and 44974 transitions. [2018-10-24 14:32:37,595 INFO L78 Accepts]: Start accepts. Automaton has 40224 states and 44974 transitions. Word has length 435 [2018-10-24 14:32:37,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:37,596 INFO L481 AbstractCegarLoop]: Abstraction has 40224 states and 44974 transitions. [2018-10-24 14:32:37,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:32:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 40224 states and 44974 transitions. [2018-10-24 14:32:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-24 14:32:37,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:37,614 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:37,615 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:37,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:37,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1005073612, now seen corresponding path program 1 times [2018-10-24 14:32:37,615 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:37,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:37,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:37,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:37,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-10-24 14:32:38,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:32:38,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:32:38,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:32:38,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:32:38,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:32:38,127 INFO L87 Difference]: Start difference. First operand 40224 states and 44974 transitions. Second operand 4 states. [2018-10-24 14:32:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:44,703 INFO L93 Difference]: Finished difference Result 106034 states and 118172 transitions. [2018-10-24 14:32:44,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:32:44,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 454 [2018-10-24 14:32:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:44,778 INFO L225 Difference]: With dead ends: 106034 [2018-10-24 14:32:44,779 INFO L226 Difference]: Without dead ends: 62382 [2018-10-24 14:32:44,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:32:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62382 states. [2018-10-24 14:32:45,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62382 to 55122. [2018-10-24 14:32:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55122 states. [2018-10-24 14:32:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55122 states to 55122 states and 60184 transitions. [2018-10-24 14:32:45,523 INFO L78 Accepts]: Start accepts. Automaton has 55122 states and 60184 transitions. Word has length 454 [2018-10-24 14:32:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:45,525 INFO L481 AbstractCegarLoop]: Abstraction has 55122 states and 60184 transitions. [2018-10-24 14:32:45,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:32:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 55122 states and 60184 transitions. [2018-10-24 14:32:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-10-24 14:32:45,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:45,538 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:45,538 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:45,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:45,539 INFO L82 PathProgramCache]: Analyzing trace with hash -2132845443, now seen corresponding path program 1 times [2018-10-24 14:32:45,539 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:45,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:45,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:45,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:45,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-24 14:32:45,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:32:45,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:32:45,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:32:45,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:32:45,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:32:45,960 INFO L87 Difference]: Start difference. First operand 55122 states and 60184 transitions. Second operand 3 states. [2018-10-24 14:32:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:51,090 INFO L93 Difference]: Finished difference Result 120046 states and 131020 transitions. [2018-10-24 14:32:51,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:32:51,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 473 [2018-10-24 14:32:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:51,156 INFO L225 Difference]: With dead ends: 120046 [2018-10-24 14:32:51,156 INFO L226 Difference]: Without dead ends: 65352 [2018-10-24 14:32:51,177 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 [2018-10-24 14:32:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65352 states. [2018-10-24 14:32:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65352 to 63217. [2018-10-24 14:32:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63217 states. [2018-10-24 14:32:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63217 states to 63217 states and 68245 transitions. [2018-10-24 14:32:51,782 INFO L78 Accepts]: Start accepts. Automaton has 63217 states and 68245 transitions. Word has length 473 [2018-10-24 14:32:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:51,783 INFO L481 AbstractCegarLoop]: Abstraction has 63217 states and 68245 transitions. [2018-10-24 14:32:51,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:32:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 63217 states and 68245 transitions. [2018-10-24 14:32:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-10-24 14:32:51,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:51,798 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:51,798 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:51,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1105582606, now seen corresponding path program 1 times [2018-10-24 14:32:51,798 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:51,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:51,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:51,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:51,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:52,358 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 14:32:52,817 WARN L179 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-24 14:32:52,985 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2018-10-24 14:32:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 244 proven. 83 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 14:32:53,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:32:53,885 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:32:53,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:54,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:32:54,810 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 16 [2018-10-24 14:32:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 53 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:32:56,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:32:56,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2018-10-24 14:32:56,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 14:32:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 14:32:56,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-10-24 14:32:56,459 INFO L87 Difference]: Start difference. First operand 63217 states and 68245 transitions. Second operand 14 states. [2018-10-24 14:33:28,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:33:28,723 INFO L93 Difference]: Finished difference Result 135470 states and 146267 transitions. [2018-10-24 14:33:28,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 14:33:28,724 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 499 [2018-10-24 14:33:28,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:33:28,798 INFO L225 Difference]: With dead ends: 135470 [2018-10-24 14:33:28,798 INFO L226 Difference]: Without dead ends: 72681 [2018-10-24 14:33:28,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 495 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-10-24 14:33:28,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72681 states. [2018-10-24 14:33:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72681 to 62777. [2018-10-24 14:33:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62777 states. [2018-10-24 14:33:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62777 states to 62777 states and 67678 transitions. [2018-10-24 14:33:29,434 INFO L78 Accepts]: Start accepts. Automaton has 62777 states and 67678 transitions. Word has length 499 [2018-10-24 14:33:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:33:29,434 INFO L481 AbstractCegarLoop]: Abstraction has 62777 states and 67678 transitions. [2018-10-24 14:33:29,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 14:33:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 62777 states and 67678 transitions. [2018-10-24 14:33:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-10-24 14:33:29,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:33:29,451 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:33:29,451 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:33:29,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:33:29,452 INFO L82 PathProgramCache]: Analyzing trace with hash -950165895, now seen corresponding path program 1 times [2018-10-24 14:33:29,452 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:33:29,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:33:29,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:33:29,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:33:29,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:33:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:33:30,097 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-10-24 14:33:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 779 proven. 66 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-24 14:33:30,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:33:30,460 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:33:30,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:33:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:33:30,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:33:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 845 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-24 14:33:31,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:33:31,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2018-10-24 14:33:31,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:33:31,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:33:31,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:33:31,084 INFO L87 Difference]: Start difference. First operand 62777 states and 67678 transitions. Second operand 8 states. [2018-10-24 14:33:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:33:41,816 INFO L93 Difference]: Finished difference Result 129808 states and 139873 transitions. [2018-10-24 14:33:41,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 14:33:41,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 596 [2018-10-24 14:33:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:33:41,888 INFO L225 Difference]: With dead ends: 129808 [2018-10-24 14:33:41,888 INFO L226 Difference]: Without dead ends: 67032 [2018-10-24 14:33:41,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:33:41,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67032 states. [2018-10-24 14:33:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67032 to 63624. [2018-10-24 14:33:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63624 states. [2018-10-24 14:33:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63624 states to 63624 states and 68245 transitions. [2018-10-24 14:33:42,533 INFO L78 Accepts]: Start accepts. Automaton has 63624 states and 68245 transitions. Word has length 596 [2018-10-24 14:33:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:33:42,533 INFO L481 AbstractCegarLoop]: Abstraction has 63624 states and 68245 transitions. [2018-10-24 14:33:42,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:33:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 63624 states and 68245 transitions. [2018-10-24 14:33:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2018-10-24 14:33:42,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:33:42,549 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:33:42,550 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:33:42,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:33:42,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1946805059, now seen corresponding path program 1 times [2018-10-24 14:33:42,550 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:33:42,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:33:42,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:33:42,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:33:42,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:33:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:33:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 368 proven. 248 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 14:33:43,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:33:43,566 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:33:44,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:33:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:33:44,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:33:54,226 WARN L179 SmtUtils]: Spent 9.36 s on a formula simplification. DAG size of input: 122 DAG size of output: 24 [2018-10-24 14:33:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-24 14:33:54,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:33:54,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 14:33:54,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:33:54,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:33:54,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:33:54,992 INFO L87 Difference]: Start difference. First operand 63624 states and 68245 transitions. Second operand 8 states. [2018-10-24 14:33:55,316 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-24 14:34:15,602 WARN L179 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 30 Received shutdown request... [2018-10-24 14:35:05,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:35:05,919 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:35:05,925 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:35:05,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:35:05 BoogieIcfgContainer [2018-10-24 14:35:05,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:35:05,926 INFO L168 Benchmark]: Toolchain (without parser) took 243411.23 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -13.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 14:35:05,927 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:35:05,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1575.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:35:05,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 503.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -916.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:35:05,930 INFO L168 Benchmark]: Boogie Preprocessor took 320.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:35:05,931 INFO L168 Benchmark]: RCFGBuilder took 9747.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 482.4 MB). Peak memory consumption was 482.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:35:05,931 INFO L168 Benchmark]: TraceAbstraction took 231258.43 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.4 GB in the end (delta: 256.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 14:35:05,937 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1575.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 503.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -916.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 320.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9747.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 482.4 MB). Peak memory consumption was 482.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231258.43 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.4 GB in the end (delta: 256.0 MB). 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: 65]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 65). Cancelled while BasicCegarLoop was constructing difference of abstraction (63624states) and FLOYD_HOARE automaton (currently 11 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (9117 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 231.1s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 202.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5610 SDtfs, 24625 SDslu, 2541 SDs, 0 SdLazy, 49067 SolverSat, 7638 SolverUnsat, 21 SolverUnknown, 0 SolverNotchecked, 181.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2245 GetRequests, 2181 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63624occurred in iteration=12, 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: 4.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 34331 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 19.9s InterpolantComputationTime, 6660 NumberOfCodeBlocks, 6660 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6642 ConstructedInterpolants, 418 QuantifiedInterpolants, 16515617 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2764 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 6005/6865 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown