java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label59_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:46:48,522 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:46:48,524 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:46:48,539 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:46:48,539 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:46:48,540 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:46:48,544 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:46:48,547 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:46:48,548 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:46:48,558 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:46:48,559 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:46:48,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:46:48,562 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:46:48,563 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:46:48,564 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:46:48,565 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:46:48,567 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:46:48,569 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:46:48,572 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:46:48,573 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:46:48,577 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:46:48,578 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:46:48,580 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:46:48,580 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:46:48,581 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:46:48,582 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:46:48,583 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:46:48,585 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:46:48,586 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:46:48,587 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:46:48,587 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:46:48,588 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:46:48,593 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:46:48,620 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:46:48,620 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:46:48,621 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:46:48,621 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:46:48,622 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:46:48,622 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:46:48,623 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:46:48,623 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:46:48,623 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:46:48,623 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:46:48,623 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:46:48,624 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:46:48,624 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:46:48,624 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:46:48,624 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:46:48,624 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:46:48,624 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:46:48,626 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:46:48,626 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:46:48,626 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:46:48,626 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:46:48,626 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:46:48,627 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:46:48,627 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:46:48,627 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:46:48,627 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:46:48,627 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:46:48,627 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:46:48,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:46:48,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:46:48,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:46:48,714 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:46:48,714 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:46:48,715 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-11-06 19:46:48,791 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/203ef2340/24d85d3774d54db9a4983d6eb1eaaabf/FLAG526df172c [2018-11-06 19:46:49,678 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:46:49,679 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label59_false-unreach-call.c [2018-11-06 19:46:49,719 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/203ef2340/24d85d3774d54db9a4983d6eb1eaaabf/FLAG526df172c [2018-11-06 19:46:49,734 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/203ef2340/24d85d3774d54db9a4983d6eb1eaaabf [2018-11-06 19:46:49,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:46:49,748 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:46:49,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:46:49,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:46:49,753 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:46:49,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:46:49" (1/1) ... [2018-11-06 19:46:49,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251b0d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:49, skipping insertion in model container [2018-11-06 19:46:49,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:46:49" (1/1) ... [2018-11-06 19:46:49,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:46:50,001 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:46:52,086 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:46:52,091 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:46:53,280 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:46:53,337 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:46:53,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53 WrapperNode [2018-11-06 19:46:53,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:46:53,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:46:53,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:46:53,340 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:46:53,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... [2018-11-06 19:46:54,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... [2018-11-06 19:46:54,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:46:54,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:46:54,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:46:54,685 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:46:54,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... [2018-11-06 19:46:54,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... [2018-11-06 19:46:54,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... [2018-11-06 19:46:54,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... [2018-11-06 19:46:55,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... [2018-11-06 19:46:55,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... [2018-11-06 19:46:55,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... [2018-11-06 19:46:55,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:46:55,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:46:55,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:46:55,384 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:46:55,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:46:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:46:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:46:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:47:10,791 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:47:10,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:47:10 BoogieIcfgContainer [2018-11-06 19:47:10,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:47:10,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:47:10,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:47:10,797 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:47:10,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:46:49" (1/3) ... [2018-11-06 19:47:10,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488a21c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:47:10, skipping insertion in model container [2018-11-06 19:47:10,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:53" (2/3) ... [2018-11-06 19:47:10,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488a21c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:47:10, skipping insertion in model container [2018-11-06 19:47:10,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:47:10" (3/3) ... [2018-11-06 19:47:10,801 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label59_false-unreach-call.c [2018-11-06 19:47:10,811 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:47:10,824 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:47:10,844 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:47:11,150 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:47:11,150 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:47:11,151 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:47:11,151 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:47:11,151 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:47:11,151 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:47:11,151 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:47:11,151 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:47:11,152 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:47:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 19:47:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-06 19:47:11,220 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:11,221 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] [2018-11-06 19:47:11,224 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:11,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:11,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1580163962, now seen corresponding path program 1 times [2018-11-06 19:47:11,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:11,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:11,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:11,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:11,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:47:11,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:11,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:47:11,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:47:11,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:47:11,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:11,534 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 19:47:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:30,075 INFO L93 Difference]: Finished difference Result 6416 states and 12258 transitions. [2018-11-06 19:47:30,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:30,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-06 19:47:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:30,150 INFO L225 Difference]: With dead ends: 6416 [2018-11-06 19:47:30,151 INFO L226 Difference]: Without dead ends: 4660 [2018-11-06 19:47:30,165 INFO L604 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 [2018-11-06 19:47:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2018-11-06 19:47:30,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 4578. [2018-11-06 19:47:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4578 states. [2018-11-06 19:47:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 7859 transitions. [2018-11-06 19:47:30,403 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 7859 transitions. Word has length 26 [2018-11-06 19:47:30,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:30,404 INFO L480 AbstractCegarLoop]: Abstraction has 4578 states and 7859 transitions. [2018-11-06 19:47:30,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:47:30,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 7859 transitions. [2018-11-06 19:47:30,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-06 19:47:30,409 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:30,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:47:30,412 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:30,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash 434309037, now seen corresponding path program 1 times [2018-11-06 19:47:30,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:30,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:30,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:30,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:30,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:47:30,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:30,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:47:30,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:47:30,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:47:30,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:30,852 INFO L87 Difference]: Start difference. First operand 4578 states and 7859 transitions. Second operand 4 states. [2018-11-06 19:47:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:49,176 INFO L93 Difference]: Finished difference Result 17609 states and 30521 transitions. [2018-11-06 19:47:49,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:49,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-11-06 19:47:49,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:49,236 INFO L225 Difference]: With dead ends: 17609 [2018-11-06 19:47:49,236 INFO L226 Difference]: Without dead ends: 13033 [2018-11-06 19:47:49,245 INFO L604 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 [2018-11-06 19:47:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13033 states. [2018-11-06 19:47:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13033 to 8674. [2018-11-06 19:47:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8674 states. [2018-11-06 19:47:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 12921 transitions. [2018-11-06 19:47:49,446 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 12921 transitions. Word has length 99 [2018-11-06 19:47:49,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:49,447 INFO L480 AbstractCegarLoop]: Abstraction has 8674 states and 12921 transitions. [2018-11-06 19:47:49,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:47:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 12921 transitions. [2018-11-06 19:47:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-06 19:47:49,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:49,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:47:49,455 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:49,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:49,455 INFO L82 PathProgramCache]: Analyzing trace with hash -933456329, now seen corresponding path program 1 times [2018-11-06 19:47:49,457 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:49,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:49,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:49,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:49,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:47:49,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:49,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:47:49,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:47:49,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:47:49,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:49,833 INFO L87 Difference]: Start difference. First operand 8674 states and 12921 transitions. Second operand 4 states. [2018-11-06 19:48:09,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:09,041 INFO L93 Difference]: Finished difference Result 33959 states and 50752 transitions. [2018-11-06 19:48:09,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:48:09,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2018-11-06 19:48:09,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:09,112 INFO L225 Difference]: With dead ends: 33959 [2018-11-06 19:48:09,112 INFO L226 Difference]: Without dead ends: 25287 [2018-11-06 19:48:09,124 INFO L604 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 [2018-11-06 19:48:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25287 states. [2018-11-06 19:48:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25287 to 16865. [2018-11-06 19:48:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16865 states. [2018-11-06 19:48:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 24052 transitions. [2018-11-06 19:48:09,420 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 24052 transitions. Word has length 109 [2018-11-06 19:48:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:09,421 INFO L480 AbstractCegarLoop]: Abstraction has 16865 states and 24052 transitions. [2018-11-06 19:48:09,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:48:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 24052 transitions. [2018-11-06 19:48:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-06 19:48:09,428 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:09,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:48:09,429 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:09,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:09,430 INFO L82 PathProgramCache]: Analyzing trace with hash -369729876, now seen corresponding path program 1 times [2018-11-06 19:48:09,430 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:09,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:09,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:09,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:09,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:48:09,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:48:09,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:48:09,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:48:09,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:48:09,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:48:09,709 INFO L87 Difference]: Start difference. First operand 16865 states and 24052 transitions. Second operand 4 states. [2018-11-06 19:48:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:23,868 INFO L93 Difference]: Finished difference Result 65164 states and 93529 transitions. [2018-11-06 19:48:23,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:48:23,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-11-06 19:48:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:23,964 INFO L225 Difference]: With dead ends: 65164 [2018-11-06 19:48:23,964 INFO L226 Difference]: Without dead ends: 48301 [2018-11-06 19:48:23,989 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:48:24,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48301 states. [2018-11-06 19:48:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48301 to 48297. [2018-11-06 19:48:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48297 states. [2018-11-06 19:48:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48297 states to 48297 states and 62684 transitions. [2018-11-06 19:48:24,608 INFO L78 Accepts]: Start accepts. Automaton has 48297 states and 62684 transitions. Word has length 165 [2018-11-06 19:48:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:24,609 INFO L480 AbstractCegarLoop]: Abstraction has 48297 states and 62684 transitions. [2018-11-06 19:48:24,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:48:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 48297 states and 62684 transitions. [2018-11-06 19:48:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-06 19:48:24,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:24,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:48:24,618 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:24,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash 93489907, now seen corresponding path program 1 times [2018-11-06 19:48:24,619 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:24,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:24,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:24,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:24,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:48:24,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:48:24,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:48:24,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:48:24,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:48:24,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:48:24,903 INFO L87 Difference]: Start difference. First operand 48297 states and 62684 transitions. Second operand 4 states. [2018-11-06 19:48:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:41,483 INFO L93 Difference]: Finished difference Result 173204 states and 223895 transitions. [2018-11-06 19:48:41,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:48:41,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2018-11-06 19:48:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:41,688 INFO L225 Difference]: With dead ends: 173204 [2018-11-06 19:48:41,688 INFO L226 Difference]: Without dead ends: 124909 [2018-11-06 19:48:41,734 INFO L604 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 [2018-11-06 19:48:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124909 states. [2018-11-06 19:48:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124909 to 124861. [2018-11-06 19:48:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124861 states. [2018-11-06 19:48:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124861 states to 124861 states and 148106 transitions. [2018-11-06 19:48:43,032 INFO L78 Accepts]: Start accepts. Automaton has 124861 states and 148106 transitions. Word has length 185 [2018-11-06 19:48:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:43,033 INFO L480 AbstractCegarLoop]: Abstraction has 124861 states and 148106 transitions. [2018-11-06 19:48:43,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:48:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 124861 states and 148106 transitions. [2018-11-06 19:48:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-11-06 19:48:43,036 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:43,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:48:43,037 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:43,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:43,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1650992551, now seen corresponding path program 1 times [2018-11-06 19:48:43,037 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:43,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:43,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:43,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:43,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:48:43,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:48:43,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:48:43,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:48:43,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:48:43,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:48:43,309 INFO L87 Difference]: Start difference. First operand 124861 states and 148106 transitions. Second operand 3 states. [2018-11-06 19:48:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:55,200 INFO L93 Difference]: Finished difference Result 292071 states and 347563 transitions. [2018-11-06 19:48:55,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:48:55,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2018-11-06 19:48:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:55,392 INFO L225 Difference]: With dead ends: 292071 [2018-11-06 19:48:55,392 INFO L226 Difference]: Without dead ends: 164473 [2018-11-06 19:48:55,479 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:48:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164473 states. [2018-11-06 19:48:56,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164473 to 164468. [2018-11-06 19:48:56,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164468 states. [2018-11-06 19:48:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164468 states to 164468 states and 189480 transitions. [2018-11-06 19:48:56,766 INFO L78 Accepts]: Start accepts. Automaton has 164468 states and 189480 transitions. Word has length 234 [2018-11-06 19:48:56,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:56,766 INFO L480 AbstractCegarLoop]: Abstraction has 164468 states and 189480 transitions. [2018-11-06 19:48:56,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:48:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 164468 states and 189480 transitions. [2018-11-06 19:48:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-11-06 19:48:56,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:56,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:48:56,777 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:56,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:56,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1649658732, now seen corresponding path program 1 times [2018-11-06 19:48:56,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:56,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:56,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:56,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:56,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:58,036 WARN L179 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-11-06 19:48:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:48:58,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:48:58,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:48:58,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:48:58,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:48:58,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:48:58,139 INFO L87 Difference]: Start difference. First operand 164468 states and 189480 transitions. Second operand 4 states. [2018-11-06 19:49:15,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:49:15,752 INFO L93 Difference]: Finished difference Result 438314 states and 506343 transitions. [2018-11-06 19:49:15,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:49:15,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 514 [2018-11-06 19:49:15,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:49:16,034 INFO L225 Difference]: With dead ends: 438314 [2018-11-06 19:49:16,034 INFO L226 Difference]: Without dead ends: 275214 [2018-11-06 19:49:16,114 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:49:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275214 states. [2018-11-06 19:49:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275214 to 230038. [2018-11-06 19:49:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230038 states. [2018-11-06 19:49:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230038 states to 230038 states and 263128 transitions. [2018-11-06 19:49:18,082 INFO L78 Accepts]: Start accepts. Automaton has 230038 states and 263128 transitions. Word has length 514 [2018-11-06 19:49:18,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:49:18,083 INFO L480 AbstractCegarLoop]: Abstraction has 230038 states and 263128 transitions. [2018-11-06 19:49:18,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:49:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 230038 states and 263128 transitions. [2018-11-06 19:49:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2018-11-06 19:49:18,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:49:18,910 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:49:18,911 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:49:18,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:49:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash 555536538, now seen corresponding path program 1 times [2018-11-06 19:49:18,912 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:49:18,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:49:18,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:49:18,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:49:18,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:49:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:49:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-11-06 19:49:20,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:49:20,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:49:20,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:49:20,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:49:20,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:49:20,268 INFO L87 Difference]: Start difference. First operand 230038 states and 263128 transitions. Second operand 4 states. [2018-11-06 19:49:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:49:35,436 INFO L93 Difference]: Finished difference Result 457341 states and 523271 transitions. [2018-11-06 19:49:35,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:49:35,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 983 [2018-11-06 19:49:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:49:35,675 INFO L225 Difference]: With dead ends: 457341 [2018-11-06 19:49:35,675 INFO L226 Difference]: Without dead ends: 228671 [2018-11-06 19:49:35,779 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:49:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228671 states. [2018-11-06 19:49:38,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228671 to 217733. [2018-11-06 19:49:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217733 states. [2018-11-06 19:49:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217733 states to 217733 states and 237488 transitions. [2018-11-06 19:49:38,425 INFO L78 Accepts]: Start accepts. Automaton has 217733 states and 237488 transitions. Word has length 983 [2018-11-06 19:49:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:49:38,426 INFO L480 AbstractCegarLoop]: Abstraction has 217733 states and 237488 transitions. [2018-11-06 19:49:38,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:49:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 217733 states and 237488 transitions. [2018-11-06 19:49:38,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2018-11-06 19:49:38,452 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:49:38,453 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:49:38,453 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:49:38,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:49:38,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1457271870, now seen corresponding path program 1 times [2018-11-06 19:49:38,454 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:49:38,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:49:38,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:49:38,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:49:38,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:49:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:49:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-11-06 19:49:41,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:49:41,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:49:41,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:49:41,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:49:41,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:49:41,285 INFO L87 Difference]: Start difference. First operand 217733 states and 237488 transitions. Second operand 6 states. [2018-11-06 19:50:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:50:09,135 INFO L93 Difference]: Finished difference Result 535508 states and 582332 transitions. [2018-11-06 19:50:09,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:50:09,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1043 [2018-11-06 19:50:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:50:09,463 INFO L225 Difference]: With dead ends: 535508 [2018-11-06 19:50:09,463 INFO L226 Difference]: Without dead ends: 313673 [2018-11-06 19:50:09,540 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:50:09,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313673 states. [2018-11-06 19:50:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313673 to 268666. [2018-11-06 19:50:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268666 states. [2018-11-06 19:50:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268666 states to 268666 states and 289966 transitions. [2018-11-06 19:50:12,746 INFO L78 Accepts]: Start accepts. Automaton has 268666 states and 289966 transitions. Word has length 1043 [2018-11-06 19:50:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:50:12,747 INFO L480 AbstractCegarLoop]: Abstraction has 268666 states and 289966 transitions. [2018-11-06 19:50:12,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:50:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 268666 states and 289966 transitions. [2018-11-06 19:50:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1086 [2018-11-06 19:50:12,770 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:50:12,771 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:50:12,771 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:50:12,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:50:12,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1409215909, now seen corresponding path program 1 times [2018-11-06 19:50:12,772 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:50:12,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:50:12,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:50:12,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:50:12,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:50:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:50:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 510 proven. 24 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-11-06 19:50:15,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:50:15,420 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:50:15,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:50:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:50:15,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:50:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2018-11-06 19:50:21,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:50:21,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 19:50:21,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:50:21,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:50:21,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:50:21,828 INFO L87 Difference]: Start difference. First operand 268666 states and 289966 transitions. Second operand 5 states. Received shutdown request... [2018-11-06 19:50:33,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:50:33,945 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:50:33,950 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:50:33,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:50:33 BoogieIcfgContainer [2018-11-06 19:50:33,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:50:33,951 INFO L168 Benchmark]: Toolchain (without parser) took 224204.15 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:50:33,952 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-06 19:50:33,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3589.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:50:33,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 1345.43 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 907.0 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:50:33,954 INFO L168 Benchmark]: Boogie Preprocessor took 698.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:50:33,955 INFO L168 Benchmark]: RCFGBuilder took 15408.17 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 233.8 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 525.0 MB). Peak memory consumption was 758.8 MB. Max. memory is 7.1 GB. [2018-11-06 19:50:33,956 INFO L168 Benchmark]: TraceAbstraction took 203157.08 ms. Allocated memory was 2.7 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 1.6 GB in the beginning and 3.6 GB in the end (delta: -2.0 GB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:50:33,962 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3589.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1345.43 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 907.0 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 698.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15408.17 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 233.8 MB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 525.0 MB). Peak memory consumption was 758.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203157.08 ms. Allocated memory was 2.7 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 1.6 GB in the beginning and 3.6 GB in the end (delta: -2.0 GB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (268666states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (73230 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 203.0s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 173.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15929 SDtfs, 34852 SDslu, 3503 SDs, 0 SdLazy, 87210 SolverSat, 21392 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1125 GetRequests, 1099 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268666occurred in iteration=9, 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: 11.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 114041 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 5528 NumberOfCodeBlocks, 5528 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 5517 ConstructedInterpolants, 0 QuantifiedInterpolants, 8200018 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1240 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 3750/3774 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown