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/Problem19_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:14:51,596 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:14:51,598 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:14:51,617 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:14:51,617 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:14:51,618 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:14:51,620 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:14:51,623 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:14:51,633 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:14:51,634 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:14:51,638 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:14:51,638 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:14:51,640 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:14:51,641 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:14:51,643 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:14:51,646 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:14:51,647 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:14:51,651 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:14:51,654 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:14:51,656 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:14:51,657 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:14:51,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:14:51,660 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:14:51,669 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 [2018-10-26 22:14:51,684 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:14:51,684 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:14:51,685 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:14:51,686 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:14:51,686 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:14:51,686 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:14:51,687 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:14:51,687 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:14:51,687 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:14:51,687 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:14:51,687 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:14:51,688 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:14:51,688 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:14:51,688 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:14:51,688 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:14:51,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:14:51,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:14:51,689 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:14:51,689 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:14:51,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:14:51,690 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:14:51,690 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:14:51,690 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:14:51,690 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:14:51,690 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:14:51,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:14:51,691 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:14:51,691 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:14:51,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:14:51,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:14:51,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:14:51,769 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:14:51,770 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:14:51,770 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label57_true-unreach-call.c [2018-10-26 22:14:51,847 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8d2a8f54/957fbf28c9694e18b7cb8ed746a481ac/FLAG7b597e510 [2018-10-26 22:14:52,758 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:14:52,761 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label57_true-unreach-call.c [2018-10-26 22:14:52,808 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8d2a8f54/957fbf28c9694e18b7cb8ed746a481ac/FLAG7b597e510 [2018-10-26 22:14:52,829 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8d2a8f54/957fbf28c9694e18b7cb8ed746a481ac [2018-10-26 22:14:52,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:14:52,844 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:14:52,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:14:52,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:14:52,850 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:14:52,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:14:52" (1/1) ... [2018-10-26 22:14:52,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d4e6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:52, skipping insertion in model container [2018-10-26 22:14:52,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:14:52" (1/1) ... [2018-10-26 22:14:52,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:14:53,132 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:14:55,092 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:14:55,097 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:14:56,266 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:14:56,320 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:14:56,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56 WrapperNode [2018-10-26 22:14:56,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:14:56,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:14:56,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:14:56,322 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:14:56,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (1/1) ... [2018-10-26 22:14:56,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (1/1) ... [2018-10-26 22:14:57,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:14:57,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:14:57,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:14:57,381 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:14:57,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (1/1) ... [2018-10-26 22:14:57,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (1/1) ... [2018-10-26 22:14:57,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (1/1) ... [2018-10-26 22:14:57,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (1/1) ... [2018-10-26 22:14:57,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (1/1) ... [2018-10-26 22:14:57,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (1/1) ... [2018-10-26 22:14:57,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (1/1) ... [2018-10-26 22:14:58,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:14:58,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:14:58,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:14:58,116 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:14:58,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (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 [2018-10-26 22:14:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:14:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:14:58,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:15:16,574 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:15:16,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:15:16 BoogieIcfgContainer [2018-10-26 22:15:16,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:15:16,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:15:16,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:15:16,580 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:15:16,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:14:52" (1/3) ... [2018-10-26 22:15:16,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8af34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:15:16, skipping insertion in model container [2018-10-26 22:15:16,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:56" (2/3) ... [2018-10-26 22:15:16,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8af34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:15:16, skipping insertion in model container [2018-10-26 22:15:16,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:15:16" (3/3) ... [2018-10-26 22:15:16,584 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label57_true-unreach-call.c [2018-10-26 22:15:16,595 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:15:16,607 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:15:16,625 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:15:16,685 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:15:16,686 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:15:16,686 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:15:16,686 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:15:16,686 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:15:16,686 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:15:16,687 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:15:16,687 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:15:16,687 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:15:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:15:17,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-26 22:15:17,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:15:17,041 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:15:17,044 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:15:17,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:15:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1848943538, now seen corresponding path program 1 times [2018-10-26 22:15:17,054 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:15:17,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:15:17,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:17,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:17,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:15:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:15:17,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:15:17,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:15:17,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:15:17,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:15:17,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:15:17,587 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 22:15:43,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:15:43,024 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-10-26 22:15:43,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:15:43,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-26 22:15:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:15:43,085 INFO L225 Difference]: With dead ends: 6419 [2018-10-26 22:15:43,085 INFO L226 Difference]: Without dead ends: 4663 [2018-10-26 22:15:43,096 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 [2018-10-26 22:15:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-10-26 22:15:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-10-26 22:15:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-10-26 22:15:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-10-26 22:15:43,311 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 57 [2018-10-26 22:15:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:15:43,311 INFO L481 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-10-26 22:15:43,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:15:43,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-10-26 22:15:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-26 22:15:43,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:15:43,323 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:15:43,323 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:15:43,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:15:43,324 INFO L82 PathProgramCache]: Analyzing trace with hash 412483048, now seen corresponding path program 1 times [2018-10-26 22:15:43,324 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:15:43,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:15:43,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:43,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:43,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:15:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:15:43,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:15:43,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:15:43,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:15:43,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:15:43,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:15:43,741 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-10-26 22:16:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:10,592 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-10-26 22:16:10,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:16:10,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-26 22:16:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:10,659 INFO L225 Difference]: With dead ends: 17564 [2018-10-26 22:16:10,659 INFO L226 Difference]: Without dead ends: 12993 [2018-10-26 22:16:10,668 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 [2018-10-26 22:16:10,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-10-26 22:16:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-10-26 22:16:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-10-26 22:16:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-10-26 22:16:10,872 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 141 [2018-10-26 22:16:10,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:10,873 INFO L481 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-10-26 22:16:10,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:16:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-10-26 22:16:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-26 22:16:10,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:10,885 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:10,885 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:10,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:10,885 INFO L82 PathProgramCache]: Analyzing trace with hash -331695523, now seen corresponding path program 1 times [2018-10-26 22:16:10,885 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:10,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:10,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:10,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:10,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:11,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:11,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:11,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:16:11,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:16:11,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:11,181 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-10-26 22:16:32,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:32,847 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-10-26 22:16:32,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:16:32,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-10-26 22:16:32,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:32,920 INFO L225 Difference]: With dead ends: 34022 [2018-10-26 22:16:32,920 INFO L226 Difference]: Without dead ends: 25352 [2018-10-26 22:16:32,935 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 [2018-10-26 22:16:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-10-26 22:16:33,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-10-26 22:16:33,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-10-26 22:16:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-10-26 22:16:33,344 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 181 [2018-10-26 22:16:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:33,344 INFO L481 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-10-26 22:16:33,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:16:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-10-26 22:16:33,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-26 22:16:33,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:33,351 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:33,351 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:33,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:33,352 INFO L82 PathProgramCache]: Analyzing trace with hash 852496620, now seen corresponding path program 1 times [2018-10-26 22:16:33,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:33,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:33,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:33,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:33,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-10-26 22:16:33,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:33,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:33,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:16:33,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:16:33,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:33,857 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-10-26 22:16:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:52,575 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-10-26 22:16:52,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:16:52,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2018-10-26 22:16:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:52,706 INFO L225 Difference]: With dead ends: 93031 [2018-10-26 22:16:52,706 INFO L226 Difference]: Without dead ends: 67695 [2018-10-26 22:16:52,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:52,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-10-26 22:16:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-10-26 22:16:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-10-26 22:16:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-10-26 22:16:53,631 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 365 [2018-10-26 22:16:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:53,631 INFO L481 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-10-26 22:16:53,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:16:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-10-26 22:16:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-10-26 22:16:53,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:53,644 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:53,644 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:53,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:53,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1935862081, now seen corresponding path program 1 times [2018-10-26 22:16:53,645 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:53,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:53,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:53,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:53,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-10-26 22:16:54,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:54,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:54,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:16:54,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:16:54,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:54,503 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-10-26 22:17:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:17:15,253 INFO L93 Difference]: Finished difference Result 235259 states and 309486 transitions. [2018-10-26 22:17:15,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:17:15,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2018-10-26 22:17:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:17:15,470 INFO L225 Difference]: With dead ends: 235259 [2018-10-26 22:17:15,470 INFO L226 Difference]: Without dead ends: 170305 [2018-10-26 22:17:15,545 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 [2018-10-26 22:17:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-10-26 22:17:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168873. [2018-10-26 22:17:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168873 states. [2018-10-26 22:17:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168873 states to 168873 states and 202433 transitions. [2018-10-26 22:17:17,213 INFO L78 Accepts]: Start accepts. Automaton has 168873 states and 202433 transitions. Word has length 466 [2018-10-26 22:17:17,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:17:17,214 INFO L481 AbstractCegarLoop]: Abstraction has 168873 states and 202433 transitions. [2018-10-26 22:17:17,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:17:17,214 INFO L276 IsEmpty]: Start isEmpty. Operand 168873 states and 202433 transitions. [2018-10-26 22:17:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2018-10-26 22:17:17,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:17:17,268 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:17:17,269 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:17:17,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:17:17,269 INFO L82 PathProgramCache]: Analyzing trace with hash 121612443, now seen corresponding path program 1 times [2018-10-26 22:17:17,269 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:17:17,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:17:17,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:17:17,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:17:17,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:17:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:17:17,937 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:17:18,351 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-26 22:17:18,766 WARN L179 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-26 22:17:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-10-26 22:17:20,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:17:20,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:17:20,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:17:20,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:17:20,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:17:20,233 INFO L87 Difference]: Start difference. First operand 168873 states and 202433 transitions. Second operand 7 states. [2018-10-26 22:18:02,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:02,206 INFO L93 Difference]: Finished difference Result 377375 states and 447271 transitions. [2018-10-26 22:18:02,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:18:02,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1019 [2018-10-26 22:18:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:02,466 INFO L225 Difference]: With dead ends: 377375 [2018-10-26 22:18:02,466 INFO L226 Difference]: Without dead ends: 209870 [2018-10-26 22:18:02,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:18:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209870 states. [2018-10-26 22:18:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209870 to 205764. [2018-10-26 22:18:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205764 states. [2018-10-26 22:18:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205764 states to 205764 states and 240850 transitions. [2018-10-26 22:18:05,147 INFO L78 Accepts]: Start accepts. Automaton has 205764 states and 240850 transitions. Word has length 1019 [2018-10-26 22:18:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:05,148 INFO L481 AbstractCegarLoop]: Abstraction has 205764 states and 240850 transitions. [2018-10-26 22:18:05,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:18:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 205764 states and 240850 transitions. [2018-10-26 22:18:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2018-10-26 22:18:05,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:05,172 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:18:05,173 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:05,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1001764960, now seen corresponding path program 1 times [2018-10-26 22:18:05,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:05,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:05,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:05,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:05,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-26 22:18:07,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:07,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:18:07,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:18:07,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:18:07,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:18:07,561 INFO L87 Difference]: Start difference. First operand 205764 states and 240850 transitions. Second operand 4 states. [2018-10-26 22:18:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:25,736 INFO L93 Difference]: Finished difference Result 474364 states and 558603 transitions. [2018-10-26 22:18:25,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:18:25,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1038 [2018-10-26 22:18:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:26,055 INFO L225 Difference]: With dead ends: 474364 [2018-10-26 22:18:26,055 INFO L226 Difference]: Without dead ends: 265863 [2018-10-26 22:18:26,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:18:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265863 states. [2018-10-26 22:18:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265863 to 265852. [2018-10-26 22:18:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265852 states. [2018-10-26 22:18:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265852 states to 265852 states and 296554 transitions. [2018-10-26 22:18:29,448 INFO L78 Accepts]: Start accepts. Automaton has 265852 states and 296554 transitions. Word has length 1038 [2018-10-26 22:18:29,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:29,449 INFO L481 AbstractCegarLoop]: Abstraction has 265852 states and 296554 transitions. [2018-10-26 22:18:29,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:18:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand 265852 states and 296554 transitions. [2018-10-26 22:18:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2018-10-26 22:18:29,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:29,477 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:18:29,477 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:29,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:29,478 INFO L82 PathProgramCache]: Analyzing trace with hash 18831720, now seen corresponding path program 1 times [2018-10-26 22:18:29,478 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:29,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:29,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:29,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:29,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 774 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-10-26 22:18:32,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:32,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:18:32,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:18:32,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:18:32,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:18:32,490 INFO L87 Difference]: Start difference. First operand 265852 states and 296554 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 22:18:50,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:18:50,324 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:18:50,331 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:18:50,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:18:50 BoogieIcfgContainer [2018-10-26 22:18:50,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:18:50,333 INFO L168 Benchmark]: Toolchain (without parser) took 237489.99 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 283.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-26 22:18:50,335 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:18:50,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3475.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.1 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:50,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 1058.52 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 845.7 MB). Free memory was 976.1 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:50,337 INFO L168 Benchmark]: Boogie Preprocessor took 735.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.2 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:50,338 INFO L168 Benchmark]: RCFGBuilder took 18459.15 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 258.5 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 522.7 MB). Peak memory consumption was 781.2 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:50,342 INFO L168 Benchmark]: TraceAbstraction took 213755.70 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 775.9 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 386.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 22:18:50,351 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3475.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.1 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1058.52 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 845.7 MB). Free memory was 976.1 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 735.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.2 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18459.15 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 258.5 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 522.7 MB). Peak memory consumption was 781.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213755.70 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 775.9 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 386.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 184]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 184). Cancelled while BasicCegarLoop was constructing difference of abstraction (265852states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (235515 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 213.6s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 192.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10710 SDtfs, 33459 SDslu, 3466 SDs, 0 SdLazy, 80703 SolverSat, 19893 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 159.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265852occurred in iteration=7, 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: 9.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 12713 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 4367 NumberOfCodeBlocks, 4367 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 4359 ConstructedInterpolants, 0 QuantifiedInterpolants, 7523669 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 3826/3826 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown