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/Problem13_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:21:42,372 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:21:42,374 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:21:42,387 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:21:42,387 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:21:42,388 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:21:42,389 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:21:42,391 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:21:42,393 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:21:42,394 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:21:42,394 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:21:42,395 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:21:42,396 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:21:42,397 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:21:42,398 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:21:42,399 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:21:42,399 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:21:42,402 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:21:42,404 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:21:42,405 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:21:42,413 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:21:42,414 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:21:42,416 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:21:42,434 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 21:21:42,464 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:21:42,464 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:21:42,465 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:21:42,465 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:21:42,466 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:21:42,466 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:21:42,466 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:21:42,466 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:21:42,466 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:21:42,467 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:21:42,467 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:21:42,468 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:21:42,468 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:21:42,468 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:21:42,468 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:21:42,468 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:21:42,469 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:21:42,469 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:21:42,469 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:21:42,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:21:42,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:21:42,473 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:21:42,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:21:42,474 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:21:42,474 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:21:42,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:21:42,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:21:42,475 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:21:42,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:21:42,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:21:42,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:21:42,545 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:21:42,546 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:21:42,547 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-11-06 21:21:42,606 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c21617c2e/e5f213def63f4365b3bd6bea9574b5ca/FLAG9cc170622 [2018-11-06 21:21:43,507 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:21:43,508 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-11-06 21:21:43,545 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c21617c2e/e5f213def63f4365b3bd6bea9574b5ca/FLAG9cc170622 [2018-11-06 21:21:43,569 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c21617c2e/e5f213def63f4365b3bd6bea9574b5ca [2018-11-06 21:21:43,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:21:43,587 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:21:43,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:21:43,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:21:43,593 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:21:43,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:21:43" (1/1) ... [2018-11-06 21:21:43,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596e7265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:43, skipping insertion in model container [2018-11-06 21:21:43,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:21:43" (1/1) ... [2018-11-06 21:21:43,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:21:43,816 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:21:45,319 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:21:45,324 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:21:46,007 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:21:46,042 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:21:46,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46 WrapperNode [2018-11-06 21:21:46,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:21:46,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:21:46,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:21:46,046 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:21:46,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (1/1) ... [2018-11-06 21:21:46,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (1/1) ... [2018-11-06 21:21:46,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:21:46,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:21:46,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:21:46,879 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:21:46,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (1/1) ... [2018-11-06 21:21:46,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (1/1) ... [2018-11-06 21:21:46,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (1/1) ... [2018-11-06 21:21:46,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (1/1) ... [2018-11-06 21:21:47,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (1/1) ... [2018-11-06 21:21:47,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (1/1) ... [2018-11-06 21:21:47,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (1/1) ... [2018-11-06 21:21:47,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:21:47,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:21:47,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:21:47,315 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:21:47,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (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 21:21:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:21:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:21:47,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:21:58,991 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:21:58,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:21:58 BoogieIcfgContainer [2018-11-06 21:21:58,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:21:58,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:21:58,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:21:58,996 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:21:58,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:21:43" (1/3) ... [2018-11-06 21:21:58,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390eedf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:21:58, skipping insertion in model container [2018-11-06 21:21:58,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:46" (2/3) ... [2018-11-06 21:21:58,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390eedf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:21:58, skipping insertion in model container [2018-11-06 21:21:58,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:21:58" (3/3) ... [2018-11-06 21:21:59,000 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label47_true-unreach-call.c [2018-11-06 21:21:59,010 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:21:59,020 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:21:59,038 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:21:59,082 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:21:59,083 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:21:59,083 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:21:59,083 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:21:59,083 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:21:59,083 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:21:59,084 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:21:59,084 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:21:59,084 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:21:59,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-11-06 21:21:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-06 21:21:59,131 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:21:59,132 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] [2018-11-06 21:21:59,134 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:21:59,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:21:59,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1934902334, now seen corresponding path program 1 times [2018-11-06 21:21:59,143 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:21:59,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:21:59,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:21:59,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:21:59,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:21:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:21:59,817 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 21:22:00,047 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-11-06 21:22:00,223 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 21:22:00,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:22:00,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:22:00,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:22:00,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:22:00,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:22:00,253 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-11-06 21:22:00,525 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-06 21:22:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:22:19,121 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-11-06 21:22:19,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:22:19,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2018-11-06 21:22:19,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:22:19,170 INFO L225 Difference]: With dead ends: 4624 [2018-11-06 21:22:19,170 INFO L226 Difference]: Without dead ends: 3515 [2018-11-06 21:22:19,180 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:22:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-11-06 21:22:19,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-11-06 21:22:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-11-06 21:22:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-11-06 21:22:19,381 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 44 [2018-11-06 21:22:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:22:19,382 INFO L480 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-11-06 21:22:19,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:22:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-11-06 21:22:19,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-06 21:22:19,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:22:19,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:19,394 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:22:19,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:22:19,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1885445779, now seen corresponding path program 1 times [2018-11-06 21:22:19,395 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:22:19,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:22:19,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:22:19,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:22:19,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:22:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:22:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-11-06 21:22:19,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:22:19,927 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 21:22:19,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:22:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:22:20,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:22:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-06 21:22:20,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:22:20,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 21:22:20,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:22:20,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:22:20,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:22:20,238 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-11-06 21:22:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:22:33,424 INFO L93 Difference]: Finished difference Result 9454 states and 15300 transitions. [2018-11-06 21:22:33,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:22:33,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-11-06 21:22:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:22:33,462 INFO L225 Difference]: With dead ends: 9454 [2018-11-06 21:22:33,462 INFO L226 Difference]: Without dead ends: 6730 [2018-11-06 21:22:33,468 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:22:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6730 states. [2018-11-06 21:22:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6730 to 6699. [2018-11-06 21:22:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6699 states. [2018-11-06 21:22:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9386 transitions. [2018-11-06 21:22:33,605 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9386 transitions. Word has length 170 [2018-11-06 21:22:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:22:33,606 INFO L480 AbstractCegarLoop]: Abstraction has 6699 states and 9386 transitions. [2018-11-06 21:22:33,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:22:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9386 transitions. [2018-11-06 21:22:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-06 21:22:33,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:22:33,613 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 21:22:33,613 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:22:33,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:22:33,614 INFO L82 PathProgramCache]: Analyzing trace with hash -811056578, now seen corresponding path program 1 times [2018-11-06 21:22:33,614 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:22:33,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:22:33,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:22:33,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:22:33,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:22:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:22:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:22:34,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:22:34,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:22:34,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:22:34,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:22:34,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:22:34,073 INFO L87 Difference]: Start difference. First operand 6699 states and 9386 transitions. Second operand 4 states. [2018-11-06 21:22:45,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:22:45,757 INFO L93 Difference]: Finished difference Result 15796 states and 23170 transitions. [2018-11-06 21:22:45,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:22:45,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 220 [2018-11-06 21:22:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:22:45,805 INFO L225 Difference]: With dead ends: 15796 [2018-11-06 21:22:45,805 INFO L226 Difference]: Without dead ends: 9887 [2018-11-06 21:22:45,815 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 21:22:45,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9887 states. [2018-11-06 21:22:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9887 to 9861. [2018-11-06 21:22:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9861 states. [2018-11-06 21:22:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9861 states to 9861 states and 13467 transitions. [2018-11-06 21:22:46,008 INFO L78 Accepts]: Start accepts. Automaton has 9861 states and 13467 transitions. Word has length 220 [2018-11-06 21:22:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:22:46,009 INFO L480 AbstractCegarLoop]: Abstraction has 9861 states and 13467 transitions. [2018-11-06 21:22:46,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:22:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 9861 states and 13467 transitions. [2018-11-06 21:22:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-06 21:22:46,016 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:22:46,017 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 21:22:46,017 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:22:46,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:22:46,018 INFO L82 PathProgramCache]: Analyzing trace with hash 136812175, now seen corresponding path program 1 times [2018-11-06 21:22:46,018 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:22:46,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:22:46,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:22:46,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:22:46,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:22:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:22:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-06 21:22:46,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:22:46,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:22:46,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:22:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:22:46,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:22:46,381 INFO L87 Difference]: Start difference. First operand 9861 states and 13467 transitions. Second operand 4 states. [2018-11-06 21:22:54,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:22:54,833 INFO L93 Difference]: Finished difference Result 33111 states and 46110 transitions. [2018-11-06 21:22:54,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:22:54,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2018-11-06 21:22:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:22:54,905 INFO L225 Difference]: With dead ends: 33111 [2018-11-06 21:22:54,905 INFO L226 Difference]: Without dead ends: 24040 [2018-11-06 21:22:54,921 INFO L604 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 [2018-11-06 21:22:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24040 states. [2018-11-06 21:22:55,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24040 to 24039. [2018-11-06 21:22:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24039 states. [2018-11-06 21:22:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24039 states to 24039 states and 30779 transitions. [2018-11-06 21:22:55,285 INFO L78 Accepts]: Start accepts. Automaton has 24039 states and 30779 transitions. Word has length 271 [2018-11-06 21:22:55,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:22:55,286 INFO L480 AbstractCegarLoop]: Abstraction has 24039 states and 30779 transitions. [2018-11-06 21:22:55,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:22:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 24039 states and 30779 transitions. [2018-11-06 21:22:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-06 21:22:55,295 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:22:55,295 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:55,296 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:22:55,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:22:55,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1185450294, now seen corresponding path program 1 times [2018-11-06 21:22:55,296 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:22:55,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:22:55,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:22:55,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:22:55,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:22:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:22:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-06 21:22:55,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:22:55,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:22:55,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:22:55,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:22:55,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:22:55,779 INFO L87 Difference]: Start difference. First operand 24039 states and 30779 transitions. Second operand 4 states. [2018-11-06 21:23:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:23:05,709 INFO L93 Difference]: Finished difference Result 46480 states and 59892 transitions. [2018-11-06 21:23:05,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:23:05,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 317 [2018-11-06 21:23:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:23:05,760 INFO L225 Difference]: With dead ends: 46480 [2018-11-06 21:23:05,760 INFO L226 Difference]: Without dead ends: 23231 [2018-11-06 21:23:05,784 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 21:23:05,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23231 states. [2018-11-06 21:23:06,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23231 to 23230. [2018-11-06 21:23:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23230 states. [2018-11-06 21:23:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23230 states to 23230 states and 26714 transitions. [2018-11-06 21:23:06,071 INFO L78 Accepts]: Start accepts. Automaton has 23230 states and 26714 transitions. Word has length 317 [2018-11-06 21:23:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:23:06,072 INFO L480 AbstractCegarLoop]: Abstraction has 23230 states and 26714 transitions. [2018-11-06 21:23:06,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:23:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 23230 states and 26714 transitions. [2018-11-06 21:23:06,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-11-06 21:23:06,083 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:23:06,083 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:06,083 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:23:06,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:23:06,084 INFO L82 PathProgramCache]: Analyzing trace with hash -957584690, now seen corresponding path program 1 times [2018-11-06 21:23:06,084 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:23:06,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:23:06,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:06,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:23:06,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:23:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-06 21:23:06,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:23:06,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:23:06,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:23:06,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:23:06,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:23:06,409 INFO L87 Difference]: Start difference. First operand 23230 states and 26714 transitions. Second operand 3 states. [2018-11-06 21:23:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:23:12,152 INFO L93 Difference]: Finished difference Result 45657 states and 52641 transitions. [2018-11-06 21:23:12,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:23:12,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2018-11-06 21:23:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:23:12,191 INFO L225 Difference]: With dead ends: 45657 [2018-11-06 21:23:12,191 INFO L226 Difference]: Without dead ends: 23217 [2018-11-06 21:23:12,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:23:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23217 states. [2018-11-06 21:23:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23217 to 23216. [2018-11-06 21:23:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23216 states. [2018-11-06 21:23:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23216 states to 23216 states and 25558 transitions. [2018-11-06 21:23:12,459 INFO L78 Accepts]: Start accepts. Automaton has 23216 states and 25558 transitions. Word has length 341 [2018-11-06 21:23:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:23:12,460 INFO L480 AbstractCegarLoop]: Abstraction has 23216 states and 25558 transitions. [2018-11-06 21:23:12,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:23:12,460 INFO L276 IsEmpty]: Start isEmpty. Operand 23216 states and 25558 transitions. [2018-11-06 21:23:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-11-06 21:23:12,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:23:12,476 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:23:12,476 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:23:12,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:23:12,477 INFO L82 PathProgramCache]: Analyzing trace with hash -195832860, now seen corresponding path program 1 times [2018-11-06 21:23:12,477 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:23:12,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:23:12,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:12,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:23:12,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:23:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 409 proven. 4 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-11-06 21:23:13,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:23:13,113 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:23:13,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:23:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:23:13,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:23:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 504 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2018-11-06 21:23:13,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:23:13,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:23:13,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:23:13,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:23:13,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:23:13,373 INFO L87 Difference]: Start difference. First operand 23216 states and 25558 transitions. Second operand 4 states. [2018-11-06 21:23:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:23:21,836 INFO L93 Difference]: Finished difference Result 81140 states and 90096 transitions. [2018-11-06 21:23:21,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:23:21,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 403 [2018-11-06 21:23:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:23:21,935 INFO L225 Difference]: With dead ends: 81140 [2018-11-06 21:23:21,935 INFO L226 Difference]: Without dead ends: 57119 [2018-11-06 21:23:21,961 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 403 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:23:22,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57119 states. [2018-11-06 21:23:22,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57119 to 38171. [2018-11-06 21:23:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38171 states. [2018-11-06 21:23:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38171 states to 38171 states and 41317 transitions. [2018-11-06 21:23:22,898 INFO L78 Accepts]: Start accepts. Automaton has 38171 states and 41317 transitions. Word has length 403 [2018-11-06 21:23:22,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:23:22,898 INFO L480 AbstractCegarLoop]: Abstraction has 38171 states and 41317 transitions. [2018-11-06 21:23:22,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:23:22,898 INFO L276 IsEmpty]: Start isEmpty. Operand 38171 states and 41317 transitions. [2018-11-06 21:23:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-11-06 21:23:22,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:23:22,920 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:22,920 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:23:22,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:23:22,922 INFO L82 PathProgramCache]: Analyzing trace with hash 265828620, now seen corresponding path program 1 times [2018-11-06 21:23:22,922 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:23:22,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:23:22,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:22,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:23:22,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:23:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-06 21:23:23,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:23:23,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:23:23,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:23:23,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:23:23,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:23:23,690 INFO L87 Difference]: Start difference. First operand 38171 states and 41317 transitions. Second operand 5 states. [2018-11-06 21:23:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:23:36,155 INFO L93 Difference]: Finished difference Result 124467 states and 135963 transitions. [2018-11-06 21:23:36,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:23:36,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 450 [2018-11-06 21:23:36,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:23:36,252 INFO L225 Difference]: With dead ends: 124467 [2018-11-06 21:23:36,252 INFO L226 Difference]: Without dead ends: 87086 [2018-11-06 21:23:36,275 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:23:36,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87086 states. [2018-11-06 21:23:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87086 to 84709. [2018-11-06 21:23:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84709 states. [2018-11-06 21:23:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84709 states to 84709 states and 91030 transitions. [2018-11-06 21:23:37,159 INFO L78 Accepts]: Start accepts. Automaton has 84709 states and 91030 transitions. Word has length 450 [2018-11-06 21:23:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:23:37,159 INFO L480 AbstractCegarLoop]: Abstraction has 84709 states and 91030 transitions. [2018-11-06 21:23:37,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:23:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 84709 states and 91030 transitions. [2018-11-06 21:23:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-11-06 21:23:37,181 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:23:37,182 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 21:23:37,182 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:23:37,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:23:37,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2087992935, now seen corresponding path program 1 times [2018-11-06 21:23:37,183 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:23:37,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:23:37,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:37,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:23:37,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:23:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-11-06 21:23:37,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:23:37,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:23:37,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:23:37,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:23:37,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:23:37,670 INFO L87 Difference]: Start difference. First operand 84709 states and 91030 transitions. Second operand 5 states. [2018-11-06 21:23:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:23:55,165 INFO L93 Difference]: Finished difference Result 294973 states and 316445 transitions. [2018-11-06 21:23:55,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:23:55,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 506 [2018-11-06 21:23:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:23:55,434 INFO L225 Difference]: With dead ends: 294973 [2018-11-06 21:23:55,434 INFO L226 Difference]: Without dead ends: 211054 [2018-11-06 21:23:55,497 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:23:55,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211054 states. [2018-11-06 21:23:57,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211054 to 195902. [2018-11-06 21:23:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195902 states. [2018-11-06 21:23:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195902 states to 195902 states and 208258 transitions. [2018-11-06 21:23:57,309 INFO L78 Accepts]: Start accepts. Automaton has 195902 states and 208258 transitions. Word has length 506 [2018-11-06 21:23:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:23:57,309 INFO L480 AbstractCegarLoop]: Abstraction has 195902 states and 208258 transitions. [2018-11-06 21:23:57,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:23:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 195902 states and 208258 transitions. [2018-11-06 21:23:57,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-11-06 21:23:57,348 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:23:57,348 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:23:57,349 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:23:57,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:23:57,349 INFO L82 PathProgramCache]: Analyzing trace with hash -795647631, now seen corresponding path program 1 times [2018-11-06 21:23:57,349 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:23:57,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:23:57,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:57,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:23:57,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:23:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:23:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 276 proven. 464 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2018-11-06 21:23:59,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:23:59,253 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:23:59,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:23:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:23:59,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:24:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 640 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2018-11-06 21:24:00,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:24:00,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 21:24:00,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:24:00,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:24:00,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:24:00,352 INFO L87 Difference]: Start difference. First operand 195902 states and 208258 transitions. Second operand 8 states. [2018-11-06 21:24:36,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:24:36,172 INFO L93 Difference]: Finished difference Result 575661 states and 611654 transitions. [2018-11-06 21:24:36,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 21:24:36,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 635 [2018-11-06 21:24:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:24:36,582 INFO L225 Difference]: With dead ends: 575661 [2018-11-06 21:24:36,582 INFO L226 Difference]: Without dead ends: 358424 [2018-11-06 21:24:36,672 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2018-11-06 21:24:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358424 states. [2018-11-06 21:24:40,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358424 to 315706. [2018-11-06 21:24:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315706 states. [2018-11-06 21:24:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315706 states to 315706 states and 332454 transitions. [2018-11-06 21:24:41,007 INFO L78 Accepts]: Start accepts. Automaton has 315706 states and 332454 transitions. Word has length 635 [2018-11-06 21:24:41,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:24:41,008 INFO L480 AbstractCegarLoop]: Abstraction has 315706 states and 332454 transitions. [2018-11-06 21:24:41,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:24:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 315706 states and 332454 transitions. [2018-11-06 21:24:41,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2018-11-06 21:24:41,063 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:24:41,064 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 21:24:41,064 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:24:41,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:24:41,065 INFO L82 PathProgramCache]: Analyzing trace with hash -781821835, now seen corresponding path program 1 times [2018-11-06 21:24:41,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:24:41,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:24:41,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:24:41,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:24:41,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:24:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:24:43,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1437 backedges. 1040 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2018-11-06 21:24:43,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:24:43,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:24:43,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:24:43,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:24:43,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:24:43,211 INFO L87 Difference]: Start difference. First operand 315706 states and 332454 transitions. Second operand 4 states. [2018-11-06 21:24:53,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:24:53,314 INFO L93 Difference]: Finished difference Result 598291 states and 629970 transitions. [2018-11-06 21:24:53,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:24:53,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 810 [2018-11-06 21:24:53,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:24:53,714 INFO L225 Difference]: With dead ends: 598291 [2018-11-06 21:24:53,714 INFO L226 Difference]: Without dead ends: 283375 [2018-11-06 21:24:53,902 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 21:24:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283375 states. [2018-11-06 21:24:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283375 to 262864. [2018-11-06 21:24:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262864 states. [2018-11-06 21:25:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262864 states to 262864 states and 273763 transitions. [2018-11-06 21:25:07,399 INFO L78 Accepts]: Start accepts. Automaton has 262864 states and 273763 transitions. Word has length 810 [2018-11-06 21:25:07,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:25:07,399 INFO L480 AbstractCegarLoop]: Abstraction has 262864 states and 273763 transitions. [2018-11-06 21:25:07,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:25:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand 262864 states and 273763 transitions. [2018-11-06 21:25:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2018-11-06 21:25:07,439 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:25:07,440 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 21:25:07,440 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:25:07,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:25:07,441 INFO L82 PathProgramCache]: Analyzing trace with hash 270779265, now seen corresponding path program 1 times [2018-11-06 21:25:07,441 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:25:07,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:25:07,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:25:07,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:25:07,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:25:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:25:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1366 backedges. 927 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-11-06 21:25:08,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:25:08,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:25:08,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:25:08,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:25:08,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:25:08,359 INFO L87 Difference]: Start difference. First operand 262864 states and 273763 transitions. Second operand 4 states. [2018-11-06 21:25:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:25:16,276 INFO L93 Difference]: Finished difference Result 528880 states and 550778 transitions. [2018-11-06 21:25:16,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:25:16,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 844 [2018-11-06 21:25:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:25:17,107 INFO L225 Difference]: With dead ends: 528880 [2018-11-06 21:25:17,107 INFO L226 Difference]: Without dead ends: 259693 [2018-11-06 21:25:17,208 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 21:25:17,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259693 states. [2018-11-06 21:25:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259693 to 257327. [2018-11-06 21:25:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257327 states. [2018-11-06 21:25:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257327 states to 257327 states and 266784 transitions. [2018-11-06 21:25:19,929 INFO L78 Accepts]: Start accepts. Automaton has 257327 states and 266784 transitions. Word has length 844 [2018-11-06 21:25:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:25:19,929 INFO L480 AbstractCegarLoop]: Abstraction has 257327 states and 266784 transitions. [2018-11-06 21:25:19,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:25:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 257327 states and 266784 transitions. [2018-11-06 21:25:19,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2018-11-06 21:25:19,973 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:25:19,974 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:25:19,974 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:25:19,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:25:19,975 INFO L82 PathProgramCache]: Analyzing trace with hash 29227893, now seen corresponding path program 1 times [2018-11-06 21:25:19,975 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:25:19,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:25:19,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:25:19,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:25:19,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:25:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:25:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2018-11-06 21:25:22,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:25:22,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:25:22,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:25:22,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:25:22,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:25:22,179 INFO L87 Difference]: Start difference. First operand 257327 states and 266784 transitions. Second operand 4 states. Received shutdown request... [2018-11-06 21:25:25,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:25:25,782 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:25:25,787 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:25:25,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:25:25 BoogieIcfgContainer [2018-11-06 21:25:25,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:25:25,788 INFO L168 Benchmark]: Toolchain (without parser) took 222202.99 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-06 21:25:25,789 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:25:25,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2456.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-11-06 21:25:25,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 834.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -981.4 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:25:25,791 INFO L168 Benchmark]: Boogie Preprocessor took 435.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 70.0 MB). Peak memory consumption was 70.0 MB. Max. memory is 7.1 GB. [2018-11-06 21:25:25,792 INFO L168 Benchmark]: RCFGBuilder took 11676.75 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 260.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 590.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:25:25,793 INFO L168 Benchmark]: TraceAbstraction took 206794.72 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -858.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-06 21:25:25,798 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2456.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 834.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -981.4 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 435.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 70.0 MB). Peak memory consumption was 70.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11676.75 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 260.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 590.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206794.72 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -858.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while BasicCegarLoop was constructing difference of abstraction (257327states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (57041 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 206.7s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 166.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11016 SDtfs, 40389 SDslu, 4154 SDs, 0 SdLazy, 77842 SolverSat, 18723 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 130.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1271 GetRequests, 1220 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=315706occurred in iteration=10, 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: 25.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 102133 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 7290 NumberOfCodeBlocks, 7290 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7274 ConstructedInterpolants, 90 QuantifiedInterpolants, 9033919 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1613 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 8492/8964 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown