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_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:58:04,148 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:58:04,150 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:58:04,163 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:58:04,163 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:58:04,164 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:58:04,166 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:58:04,168 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:58:04,169 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:58:04,170 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:58:04,171 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:58:04,171 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:58:04,172 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:58:04,174 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:58:04,175 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:58:04,176 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:58:04,177 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:58:04,179 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:58:04,181 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:58:04,182 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:58:04,183 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:58:04,188 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:58:04,195 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:58:04,212 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:58:04,243 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:58:04,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:58:04,244 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:58:04,244 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:58:04,245 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:58:04,245 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:58:04,245 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:58:04,246 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:58:04,246 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:58:04,246 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:58:04,246 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:58:04,246 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:58:04,247 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:58:04,247 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:58:04,247 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:58:04,247 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:58:04,247 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:58:04,248 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:58:04,248 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:58:04,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:58:04,248 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:58:04,249 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:58:04,249 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:58:04,249 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:58:04,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:58:04,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:58:04,250 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:58:04,250 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:58:04,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:58:04,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:58:04,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:58:04,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:58:04,332 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:58:04,333 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-10-23 20:58:04,398 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2b1bf760/86a4d389a83c4e0eb6d4b0e258cfc95e/FLAG5ad08f3db [2018-10-23 20:58:05,338 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:58:05,340 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-10-23 20:58:05,390 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2b1bf760/86a4d389a83c4e0eb6d4b0e258cfc95e/FLAG5ad08f3db [2018-10-23 20:58:05,406 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2b1bf760/86a4d389a83c4e0eb6d4b0e258cfc95e [2018-10-23 20:58:05,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:58:05,419 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:58:05,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:58:05,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:58:05,425 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:58:05,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:58:05" (1/1) ... [2018-10-23 20:58:05,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd01a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:05, skipping insertion in model container [2018-10-23 20:58:05,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:58:05" (1/1) ... [2018-10-23 20:58:05,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:58:05,704 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:58:07,860 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:58:07,865 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:58:09,340 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:58:09,406 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:58:09,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09 WrapperNode [2018-10-23 20:58:09,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:58:09,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:58:09,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:58:09,409 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:58:09,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... [2018-10-23 20:58:09,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... [2018-10-23 20:58:10,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:58:10,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:58:10,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:58:10,723 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:58:10,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... [2018-10-23 20:58:10,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... [2018-10-23 20:58:10,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... [2018-10-23 20:58:10,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... [2018-10-23 20:58:11,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... [2018-10-23 20:58:11,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... [2018-10-23 20:58:11,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... [2018-10-23 20:58:11,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:58:11,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:58:11,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:58:11,426 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:58:11,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:58:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:58:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:58:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:58:29,537 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:58:29,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:58:29 BoogieIcfgContainer [2018-10-23 20:58:29,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:58:29,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:58:29,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:58:29,543 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:58:29,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:58:05" (1/3) ... [2018-10-23 20:58:29,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31500e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:58:29, skipping insertion in model container [2018-10-23 20:58:29,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:09" (2/3) ... [2018-10-23 20:58:29,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31500e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:58:29, skipping insertion in model container [2018-10-23 20:58:29,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:58:29" (3/3) ... [2018-10-23 20:58:29,547 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02_true-unreach-call.c [2018-10-23 20:58:29,557 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:58:29,568 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:58:29,586 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:58:29,642 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:58:29,643 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:58:29,643 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:58:29,643 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:58:29,644 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:58:29,644 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:58:29,644 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:58:29,644 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:58:29,644 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:58:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 20:58:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-23 20:58:29,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:58:29,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:58:29,712 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:58:29,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:58:29,719 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-10-23 20:58:29,721 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:58:29,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:58:29,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:29,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:58:29,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:58:30,196 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 20:58:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:58:30,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:58:30,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:58:30,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:58:30,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:58:30,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:58:30,323 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 20:58:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:58:58,829 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-10-23 20:58:58,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:58:58,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-10-23 20:58:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:58:58,900 INFO L225 Difference]: With dead ends: 6419 [2018-10-23 20:58:58,900 INFO L226 Difference]: Without dead ends: 4663 [2018-10-23 20:58:58,913 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 [2018-10-23 20:58:58,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-10-23 20:58:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-10-23 20:58:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-10-23 20:58:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-10-23 20:58:59,151 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 67 [2018-10-23 20:58:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:58:59,152 INFO L481 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-10-23 20:58:59,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:58:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-10-23 20:58:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-23 20:58:59,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:58:59,160 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, 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] [2018-10-23 20:58:59,161 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:58:59,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:58:59,161 INFO L82 PathProgramCache]: Analyzing trace with hash 297182960, now seen corresponding path program 1 times [2018-10-23 20:58:59,161 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:58:59,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:58:59,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:59,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:58:59,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:58:59,580 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:58:59,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:58:59,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:58:59,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:58:59,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:58:59,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:58:59,586 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-10-23 20:59:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:59:25,152 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-10-23 20:59:25,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:59:25,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-10-23 20:59:25,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:59:25,222 INFO L225 Difference]: With dead ends: 17564 [2018-10-23 20:59:25,222 INFO L226 Difference]: Without dead ends: 12993 [2018-10-23 20:59:25,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-10-23 20:59:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-10-23 20:59:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-10-23 20:59:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-10-23 20:59:25,427 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 151 [2018-10-23 20:59:25,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:59:25,427 INFO L481 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-10-23 20:59:25,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:59:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-10-23 20:59:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-23 20:59:25,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:59:25,431 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, 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] [2018-10-23 20:59:25,431 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:59:25,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:59:25,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1159514843, now seen corresponding path program 1 times [2018-10-23 20:59:25,432 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:59:25,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:59:25,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:25,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:59:25,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:59:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:59:25,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:59:25,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:59:25,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:59:25,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:59:25,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:25,842 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-10-23 20:59:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:59:48,053 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-10-23 20:59:48,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:59:48,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-10-23 20:59:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:59:48,129 INFO L225 Difference]: With dead ends: 34022 [2018-10-23 20:59:48,130 INFO L226 Difference]: Without dead ends: 25352 [2018-10-23 20:59:48,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-10-23 20:59:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-10-23 20:59:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-10-23 20:59:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-10-23 20:59:48,575 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 191 [2018-10-23 20:59:48,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:59:48,575 INFO L481 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-10-23 20:59:48,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:59:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-10-23 20:59:48,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-10-23 20:59:48,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:59:48,589 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:59:48,589 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:59:48,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:59:48,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1089657292, now seen corresponding path program 1 times [2018-10-23 20:59:48,591 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:59:48,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:59:48,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:48,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:59:48,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:59:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-23 20:59:49,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:59:49,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:59:49,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:59:49,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:59:49,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:49,376 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-10-23 21:00:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:08,121 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-10-23 21:00:08,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:00:08,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 375 [2018-10-23 21:00:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:08,248 INFO L225 Difference]: With dead ends: 93031 [2018-10-23 21:00:08,249 INFO L226 Difference]: Without dead ends: 67695 [2018-10-23 21:00:08,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:08,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-10-23 21:00:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-10-23 21:00:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-10-23 21:00:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-10-23 21:00:09,084 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 375 [2018-10-23 21:00:09,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:09,085 INFO L481 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-10-23 21:00:09,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:00:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-10-23 21:00:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-10-23 21:00:09,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:09,100 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:00:09,100 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:09,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:09,101 INFO L82 PathProgramCache]: Analyzing trace with hash 864219911, now seen corresponding path program 1 times [2018-10-23 21:00:09,101 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:09,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:09,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:09,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:09,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-10-23 21:00:09,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:00:09,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:00:09,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:00:09,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:00:09,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:09,723 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-10-23 21:00:32,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:32,056 INFO L93 Difference]: Finished difference Result 235259 states and 309485 transitions. [2018-10-23 21:00:32,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:00:32,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 476 [2018-10-23 21:00:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:32,282 INFO L225 Difference]: With dead ends: 235259 [2018-10-23 21:00:32,283 INFO L226 Difference]: Without dead ends: 170305 [2018-10-23 21:00:32,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-10-23 21:00:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168871. [2018-10-23 21:00:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168871 states. [2018-10-23 21:00:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168871 states to 168871 states and 202431 transitions. [2018-10-23 21:00:35,155 INFO L78 Accepts]: Start accepts. Automaton has 168871 states and 202431 transitions. Word has length 476 [2018-10-23 21:00:35,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:35,156 INFO L481 AbstractCegarLoop]: Abstraction has 168871 states and 202431 transitions. [2018-10-23 21:00:35,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:00:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 168871 states and 202431 transitions. [2018-10-23 21:00:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2018-10-23 21:00:35,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:35,198 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, 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, 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] [2018-10-23 21:00:35,199 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:35,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:35,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1340282011, now seen corresponding path program 1 times [2018-10-23 21:00:35,199 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:35,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:35,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:35,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:35,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-23 21:00:36,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:00:36,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:00:36,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:00:36,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:00:36,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:36,399 INFO L87 Difference]: Start difference. First operand 168871 states and 202431 transitions. Second operand 4 states. [2018-10-23 21:00:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:59,499 INFO L93 Difference]: Finished difference Result 430683 states and 522687 transitions. [2018-10-23 21:00:59,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:00:59,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 946 [2018-10-23 21:00:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:00,787 INFO L225 Difference]: With dead ends: 430683 [2018-10-23 21:01:00,787 INFO L226 Difference]: Without dead ends: 263180 [2018-10-23 21:01:00,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:01,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263180 states. [2018-10-23 21:01:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263180 to 231736. [2018-10-23 21:01:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231736 states. [2018-10-23 21:01:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231736 states to 231736 states and 273447 transitions. [2018-10-23 21:01:03,134 INFO L78 Accepts]: Start accepts. Automaton has 231736 states and 273447 transitions. Word has length 946 [2018-10-23 21:01:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:03,135 INFO L481 AbstractCegarLoop]: Abstraction has 231736 states and 273447 transitions. [2018-10-23 21:01:03,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:01:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 231736 states and 273447 transitions. [2018-10-23 21:01:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2018-10-23 21:01:03,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:03,178 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:01:03,178 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:03,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:03,179 INFO L82 PathProgramCache]: Analyzing trace with hash -329799909, now seen corresponding path program 1 times [2018-10-23 21:01:03,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:03,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:03,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:03,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:03,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 21:01:05,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:05,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:01:05,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:01:05,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:01:05,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:05,871 INFO L87 Difference]: Start difference. First operand 231736 states and 273447 transitions. Second operand 4 states. [2018-10-23 21:01:24,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:24,315 INFO L93 Difference]: Finished difference Result 460733 states and 543839 transitions. [2018-10-23 21:01:24,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:01:24,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 955 [2018-10-23 21:01:24,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:24,608 INFO L225 Difference]: With dead ends: 460733 [2018-10-23 21:01:24,608 INFO L226 Difference]: Without dead ends: 230365 [2018-10-23 21:01:24,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:24,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230365 states. [2018-10-23 21:01:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230365 to 219424. [2018-10-23 21:01:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219424 states. [2018-10-23 21:01:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219424 states to 219424 states and 242045 transitions. [2018-10-23 21:01:27,788 INFO L78 Accepts]: Start accepts. Automaton has 219424 states and 242045 transitions. Word has length 955 [2018-10-23 21:01:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:27,789 INFO L481 AbstractCegarLoop]: Abstraction has 219424 states and 242045 transitions. [2018-10-23 21:01:27,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:01:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 219424 states and 242045 transitions. [2018-10-23 21:01:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2018-10-23 21:01:27,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:27,815 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, 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, 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] [2018-10-23 21:01:27,815 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:27,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:27,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1282144835, now seen corresponding path program 1 times [2018-10-23 21:01:27,817 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:27,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:27,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:27,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:27,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:28,328 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 21:01:28,692 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-23 21:01:28,898 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2018-10-23 21:01:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-10-23 21:01:35,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:35,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:01:35,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:01:35,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:01:35,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:01:35,957 INFO L87 Difference]: Start difference. First operand 219424 states and 242045 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 21:01:57,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:01:57,554 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:01:57,561 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:01:57,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:01:57 BoogieIcfgContainer [2018-10-23 21:01:57,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:01:57,563 INFO L168 Benchmark]: Toolchain (without parser) took 232144.94 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-23 21:01:57,564 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:01:57,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3987.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 986.6 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:57,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 1314.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 819.5 MB). Free memory was 986.6 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:57,567 INFO L168 Benchmark]: Boogie Preprocessor took 702.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 104.9 MB). Peak memory consumption was 104.9 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:57,567 INFO L168 Benchmark]: RCFGBuilder took 18112.29 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 295.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 468.8 MB). Peak memory consumption was 764.0 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:57,571 INFO L168 Benchmark]: TraceAbstraction took 208022.98 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 575.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:01:57,577 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3987.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 986.6 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 1314.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 819.5 MB). Free memory was 986.6 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 702.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 104.9 MB). Peak memory consumption was 104.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18112.29 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 295.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 468.8 MB). Peak memory consumption was 764.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208022.98 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 575.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 214]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 214). Cancelled while BasicCegarLoop was constructing difference of abstraction (219424states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (196593 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 207.9s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 183.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10511 SDtfs, 33027 SDslu, 3311 SDs, 0 SdLazy, 71807 SolverSat, 19436 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 153.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231736occurred in iteration=6, 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: 9.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 50983 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 4247 NumberOfCodeBlocks, 4247 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 4239 ConstructedInterpolants, 0 QuantifiedInterpolants, 7180818 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 3166/3166 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown