java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 18:33:10,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 18:33:10,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 18:33:10,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 18:33:10,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 18:33:10,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 18:33:10,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 18:33:10,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 18:33:10,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 18:33:10,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 18:33:10,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 18:33:10,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 18:33:10,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 18:33:10,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 18:33:10,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 18:33:10,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 18:33:10,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 18:33:10,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 18:33:10,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 18:33:10,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 18:33:10,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 18:33:10,487 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 18:33:10,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 18:33:10,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 18:33:10,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 18:33:10,492 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 18:33:10,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 18:33:10,493 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 18:33:10,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 18:33:10,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 18:33:10,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 18:33:10,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 18:33:10,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 18:33:10,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 18:33:10,495 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 18:33:10,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 18:33:10,495 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 18:33:10,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 18:33:10,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 18:33:10,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 18:33:10,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 18:33:10,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 18:33:10,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 18:33:10,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 18:33:10,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 18:33:10,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 18:33:10,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 18:33:10,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 18:33:10,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 18:33:10,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 18:33:10,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 18:33:10,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 18:33:10,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 18:33:10,553 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 18:33:10,553 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 18:33:10,554 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02.c [2019-09-07 18:33:10,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9685d7e3f/308078caf14f40c6933981dba8c0e24b/FLAG87c276f6b [2019-09-07 18:33:11,467 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 18:33:11,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label02.c [2019-09-07 18:33:11,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9685d7e3f/308078caf14f40c6933981dba8c0e24b/FLAG87c276f6b [2019-09-07 18:33:11,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9685d7e3f/308078caf14f40c6933981dba8c0e24b [2019-09-07 18:33:11,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 18:33:11,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 18:33:11,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 18:33:11,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 18:33:11,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 18:33:11,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:33:11" (1/1) ... [2019-09-07 18:33:11,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d0733d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:11, skipping insertion in model container [2019-09-07 18:33:11,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:33:11" (1/1) ... [2019-09-07 18:33:12,000 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 18:33:12,163 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 18:33:13,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:33:13,658 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 18:33:14,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:33:14,348 INFO L192 MainTranslator]: Completed translation [2019-09-07 18:33:14,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14 WrapperNode [2019-09-07 18:33:14,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 18:33:14,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 18:33:14,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 18:33:14,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 18:33:14,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14" (1/1) ... [2019-09-07 18:33:14,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14" (1/1) ... [2019-09-07 18:33:14,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14" (1/1) ... [2019-09-07 18:33:14,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14" (1/1) ... [2019-09-07 18:33:14,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14" (1/1) ... [2019-09-07 18:33:14,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14" (1/1) ... [2019-09-07 18:33:14,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14" (1/1) ... [2019-09-07 18:33:14,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 18:33:14,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 18:33:14,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 18:33:14,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 18:33:14,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14" (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 [2019-09-07 18:33:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 18:33:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 18:33:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 18:33:14,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 18:33:14,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 18:33:14,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 18:33:14,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 18:33:14,714 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 18:33:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 18:33:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 18:33:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 18:33:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 18:33:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 18:33:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 18:33:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 18:33:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 18:33:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 18:33:20,000 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 18:33:20,001 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 18:33:20,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:33:20 BoogieIcfgContainer [2019-09-07 18:33:20,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 18:33:20,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 18:33:20,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 18:33:20,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 18:33:20,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 06:33:11" (1/3) ... [2019-09-07 18:33:20,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c5a6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:33:20, skipping insertion in model container [2019-09-07 18:33:20,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:33:14" (2/3) ... [2019-09-07 18:33:20,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c5a6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:33:20, skipping insertion in model container [2019-09-07 18:33:20,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:33:20" (3/3) ... [2019-09-07 18:33:20,013 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label02.c [2019-09-07 18:33:20,024 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 18:33:20,034 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 18:33:20,052 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 18:33:20,094 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 18:33:20,094 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 18:33:20,095 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 18:33:20,095 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 18:33:20,095 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 18:33:20,095 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 18:33:20,095 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 18:33:20,095 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 18:33:20,095 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 18:33:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-07 18:33:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-07 18:33:20,146 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:20,148 INFO L399 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, 1] [2019-09-07 18:33:20,151 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:20,157 INFO L82 PathProgramCache]: Analyzing trace with hash -19130643, now seen corresponding path program 1 times [2019-09-07 18:33:20,159 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:20,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:20,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:20,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:20,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:33:20,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:33:20,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 18:33:20,589 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 18:33:20,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 18:33:20,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:33:20,607 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-07 18:33:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:33:26,449 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-09-07 18:33:26,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 18:33:26,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-09-07 18:33:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:33:26,502 INFO L225 Difference]: With dead ends: 2443 [2019-09-07 18:33:26,502 INFO L226 Difference]: Without dead ends: 1542 [2019-09-07 18:33:26,515 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:33:26,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-07 18:33:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-07 18:33:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-07 18:33:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2702 transitions. [2019-09-07 18:33:26,678 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2702 transitions. Word has length 68 [2019-09-07 18:33:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:33:26,679 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2702 transitions. [2019-09-07 18:33:26,679 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 18:33:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2702 transitions. [2019-09-07 18:33:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-07 18:33:26,692 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:26,693 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:33:26,693 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:26,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:26,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1542176651, now seen corresponding path program 1 times [2019-09-07 18:33:26,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:26,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:26,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:26,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:26,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 18:33:27,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:33:27,012 INFO L223 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 [2019-09-07 18:33:27,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:27,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 18:33:27,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:33:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 18:33:27,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:33:27,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-09-07 18:33:27,275 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:33:27,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:33:27,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:33:27,276 INFO L87 Difference]: Start difference. First operand 1542 states and 2702 transitions. Second operand 6 states. [2019-09-07 18:33:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:33:38,530 INFO L93 Difference]: Finished difference Result 6260 states and 11070 transitions. [2019-09-07 18:33:38,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 18:33:38,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-09-07 18:33:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:33:38,565 INFO L225 Difference]: With dead ends: 6260 [2019-09-07 18:33:38,565 INFO L226 Difference]: Without dead ends: 4724 [2019-09-07 18:33:38,571 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-09-07 18:33:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2019-09-07 18:33:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 4698. [2019-09-07 18:33:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4698 states. [2019-09-07 18:33:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 6767 transitions. [2019-09-07 18:33:38,779 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 6767 transitions. Word has length 143 [2019-09-07 18:33:38,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:33:38,782 INFO L475 AbstractCegarLoop]: Abstraction has 4698 states and 6767 transitions. [2019-09-07 18:33:38,783 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:33:38,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 6767 transitions. [2019-09-07 18:33:38,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-09-07 18:33:38,788 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:38,788 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:33:38,788 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:38,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:38,789 INFO L82 PathProgramCache]: Analyzing trace with hash -938143187, now seen corresponding path program 1 times [2019-09-07 18:33:38,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:38,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:38,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:38,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:38,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:33:38,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:33:38,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 18:33:38,994 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 18:33:38,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 18:33:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 18:33:38,995 INFO L87 Difference]: Start difference. First operand 4698 states and 6767 transitions. Second operand 5 states. [2019-09-07 18:33:47,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:33:47,195 INFO L93 Difference]: Finished difference Result 14408 states and 21301 transitions. [2019-09-07 18:33:47,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 18:33:47,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-09-07 18:33:47,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:33:47,249 INFO L225 Difference]: With dead ends: 14408 [2019-09-07 18:33:47,249 INFO L226 Difference]: Without dead ends: 9716 [2019-09-07 18:33:47,265 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:33:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9716 states. [2019-09-07 18:33:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9716 to 9617. [2019-09-07 18:33:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9617 states. [2019-09-07 18:33:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9617 states to 9617 states and 13174 transitions. [2019-09-07 18:33:47,591 INFO L78 Accepts]: Start accepts. Automaton has 9617 states and 13174 transitions. Word has length 147 [2019-09-07 18:33:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:33:47,593 INFO L475 AbstractCegarLoop]: Abstraction has 9617 states and 13174 transitions. [2019-09-07 18:33:47,593 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 18:33:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 9617 states and 13174 transitions. [2019-09-07 18:33:47,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-09-07 18:33:47,600 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:47,600 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:33:47,601 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:47,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:47,601 INFO L82 PathProgramCache]: Analyzing trace with hash 315591881, now seen corresponding path program 1 times [2019-09-07 18:33:47,601 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:47,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:47,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:47,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:47,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:33:47,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:33:47,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:33:47,818 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:33:47,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:33:47,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:33:47,875 INFO L87 Difference]: Start difference. First operand 9617 states and 13174 transitions. Second operand 6 states. [2019-09-07 18:33:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:33:55,568 INFO L93 Difference]: Finished difference Result 26894 states and 38849 transitions. [2019-09-07 18:33:55,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:33:55,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2019-09-07 18:33:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:33:55,643 INFO L225 Difference]: With dead ends: 26894 [2019-09-07 18:33:55,644 INFO L226 Difference]: Without dead ends: 17283 [2019-09-07 18:33:55,672 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:33:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17283 states. [2019-09-07 18:33:56,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17283 to 17076. [2019-09-07 18:33:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17076 states. [2019-09-07 18:33:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17076 states to 17076 states and 23486 transitions. [2019-09-07 18:33:57,125 INFO L78 Accepts]: Start accepts. Automaton has 17076 states and 23486 transitions. Word has length 181 [2019-09-07 18:33:57,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:33:57,126 INFO L475 AbstractCegarLoop]: Abstraction has 17076 states and 23486 transitions. [2019-09-07 18:33:57,127 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:33:57,127 INFO L276 IsEmpty]: Start isEmpty. Operand 17076 states and 23486 transitions. [2019-09-07 18:33:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-09-07 18:33:57,131 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:33:57,132 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:33:57,132 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:33:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:33:57,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1596621640, now seen corresponding path program 1 times [2019-09-07 18:33:57,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:33:57,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:33:57,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:57,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:33:57,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:33:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:33:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:33:57,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:33:57,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 18:33:57,326 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 18:33:57,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 18:33:57,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:33:57,327 INFO L87 Difference]: Start difference. First operand 17076 states and 23486 transitions. Second operand 4 states. [2019-09-07 18:34:06,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:34:06,407 INFO L93 Difference]: Finished difference Result 64597 states and 94611 transitions. [2019-09-07 18:34:06,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 18:34:06,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 216 [2019-09-07 18:34:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:34:06,613 INFO L225 Difference]: With dead ends: 64597 [2019-09-07 18:34:06,613 INFO L226 Difference]: Without dead ends: 47527 [2019-09-07 18:34:06,669 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:34:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47527 states. [2019-09-07 18:34:07,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47527 to 44425. [2019-09-07 18:34:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44425 states. [2019-09-07 18:34:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44425 states to 44425 states and 64237 transitions. [2019-09-07 18:34:07,694 INFO L78 Accepts]: Start accepts. Automaton has 44425 states and 64237 transitions. Word has length 216 [2019-09-07 18:34:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:34:07,695 INFO L475 AbstractCegarLoop]: Abstraction has 44425 states and 64237 transitions. [2019-09-07 18:34:07,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 18:34:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 44425 states and 64237 transitions. [2019-09-07 18:34:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-09-07 18:34:07,701 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:34:07,702 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:34:07,702 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:34:07,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:34:07,702 INFO L82 PathProgramCache]: Analyzing trace with hash 436902276, now seen corresponding path program 1 times [2019-09-07 18:34:07,703 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:34:07,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:34:07,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:07,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:07,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:34:08,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:34:08,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:34:08,210 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:34:08,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:34:08,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:34:08,211 INFO L87 Difference]: Start difference. First operand 44425 states and 64237 transitions. Second operand 6 states. [2019-09-07 18:34:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:34:15,694 INFO L93 Difference]: Finished difference Result 108071 states and 161240 transitions. [2019-09-07 18:34:15,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:34:15,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 266 [2019-09-07 18:34:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:34:15,955 INFO L225 Difference]: With dead ends: 108071 [2019-09-07 18:34:15,955 INFO L226 Difference]: Without dead ends: 63652 [2019-09-07 18:34:16,060 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:34:16,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63652 states. [2019-09-07 18:34:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63652 to 61998. [2019-09-07 18:34:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61998 states. [2019-09-07 18:34:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61998 states to 61998 states and 85720 transitions. [2019-09-07 18:34:18,938 INFO L78 Accepts]: Start accepts. Automaton has 61998 states and 85720 transitions. Word has length 266 [2019-09-07 18:34:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:34:18,939 INFO L475 AbstractCegarLoop]: Abstraction has 61998 states and 85720 transitions. [2019-09-07 18:34:18,939 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:34:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 61998 states and 85720 transitions. [2019-09-07 18:34:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2019-09-07 18:34:18,952 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:34:18,952 INFO L399 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:34:18,953 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:34:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:34:18,953 INFO L82 PathProgramCache]: Analyzing trace with hash -592133211, now seen corresponding path program 1 times [2019-09-07 18:34:18,958 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:34:18,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:34:18,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:18,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:18,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 18:34:19,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:34:19,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 18:34:19,232 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 18:34:19,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 18:34:19,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:34:19,233 INFO L87 Difference]: Start difference. First operand 61998 states and 85720 transitions. Second operand 4 states. [2019-09-07 18:34:27,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:34:27,794 INFO L93 Difference]: Finished difference Result 144911 states and 200496 transitions. [2019-09-07 18:34:27,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 18:34:27,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2019-09-07 18:34:27,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:34:28,066 INFO L225 Difference]: With dead ends: 144911 [2019-09-07 18:34:28,067 INFO L226 Difference]: Without dead ends: 82919 [2019-09-07 18:34:28,209 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:34:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82919 states. [2019-09-07 18:34:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82919 to 77527. [2019-09-07 18:34:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77527 states. [2019-09-07 18:34:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77527 states to 77527 states and 100559 transitions. [2019-09-07 18:34:30,122 INFO L78 Accepts]: Start accepts. Automaton has 77527 states and 100559 transitions. Word has length 306 [2019-09-07 18:34:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:34:30,123 INFO L475 AbstractCegarLoop]: Abstraction has 77527 states and 100559 transitions. [2019-09-07 18:34:30,123 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 18:34:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand 77527 states and 100559 transitions. [2019-09-07 18:34:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-09-07 18:34:30,131 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:34:30,132 INFO L399 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:34:30,132 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:34:30,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:34:30,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1006339533, now seen corresponding path program 1 times [2019-09-07 18:34:30,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:34:30,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:34:30,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:30,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:30,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 123 proven. 15 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-07 18:34:30,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:34:30,375 INFO L223 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) [2019-09-07 18:34:30,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:34:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:30,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:34:30,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:34:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:34:32,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:34:32,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:34:32,364 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:34:32,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:34:32,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:34:32,365 INFO L87 Difference]: Start difference. First operand 77527 states and 100559 transitions. Second operand 9 states. [2019-09-07 18:34:43,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:34:43,279 INFO L93 Difference]: Finished difference Result 173105 states and 226321 transitions. [2019-09-07 18:34:43,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 18:34:43,280 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 310 [2019-09-07 18:34:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:34:43,478 INFO L225 Difference]: With dead ends: 173105 [2019-09-07 18:34:43,479 INFO L226 Difference]: Without dead ends: 95584 [2019-09-07 18:34:43,607 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:34:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95584 states. [2019-09-07 18:34:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95584 to 85480. [2019-09-07 18:34:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85480 states. [2019-09-07 18:34:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85480 states to 85480 states and 106611 transitions. [2019-09-07 18:34:45,349 INFO L78 Accepts]: Start accepts. Automaton has 85480 states and 106611 transitions. Word has length 310 [2019-09-07 18:34:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:34:45,350 INFO L475 AbstractCegarLoop]: Abstraction has 85480 states and 106611 transitions. [2019-09-07 18:34:45,350 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:34:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 85480 states and 106611 transitions. [2019-09-07 18:34:45,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2019-09-07 18:34:45,360 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:34:45,360 INFO L399 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:34:45,360 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:34:45,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:34:45,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1172029402, now seen corresponding path program 1 times [2019-09-07 18:34:45,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:34:45,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:34:45,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:45,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:45,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:34:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 163 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:34:45,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:34:45,657 INFO L223 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 [2019-09-07 18:34:45,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:34:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:34:45,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 18:34:45,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:34:45,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:34:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-09-07 18:34:46,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:34:46,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 18:34:46,084 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 18:34:46,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 18:34:46,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-07 18:34:46,084 INFO L87 Difference]: Start difference. First operand 85480 states and 106611 transitions. Second operand 10 states. [2019-09-07 18:35:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:35:17,938 INFO L93 Difference]: Finished difference Result 248036 states and 317982 transitions. [2019-09-07 18:35:17,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-09-07 18:35:17,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 317 [2019-09-07 18:35:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:35:18,367 INFO L225 Difference]: With dead ends: 248036 [2019-09-07 18:35:18,367 INFO L226 Difference]: Without dead ends: 162562 [2019-09-07 18:35:18,468 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=465, Invalid=1791, Unknown=0, NotChecked=0, Total=2256 [2019-09-07 18:35:18,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162562 states. [2019-09-07 18:35:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162562 to 161523. [2019-09-07 18:35:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161523 states. [2019-09-07 18:35:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161523 states to 161523 states and 203804 transitions. [2019-09-07 18:35:21,554 INFO L78 Accepts]: Start accepts. Automaton has 161523 states and 203804 transitions. Word has length 317 [2019-09-07 18:35:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:35:21,555 INFO L475 AbstractCegarLoop]: Abstraction has 161523 states and 203804 transitions. [2019-09-07 18:35:21,555 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 18:35:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 161523 states and 203804 transitions. [2019-09-07 18:35:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2019-09-07 18:35:21,576 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:35:21,577 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2019-09-07 18:35:21,577 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:35:21,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:35:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1155125759, now seen corresponding path program 1 times [2019-09-07 18:35:21,578 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:35:21,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:35:21,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:21,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:21,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 325 proven. 283 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-07 18:35:22,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:35:22,599 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:35:22,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:35:22,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:35:22,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:35:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 472 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 18:35:25,658 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:35:25,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15 [2019-09-07 18:35:25,659 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 18:35:25,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 18:35:25,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-09-07 18:35:25,659 INFO L87 Difference]: Start difference. First operand 161523 states and 203804 transitions. Second operand 15 states. [2019-09-07 18:35:30,069 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2019-09-07 18:35:31,236 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-07 18:35:34,710 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-09-07 18:35:39,438 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2019-09-07 18:35:40,289 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-09-07 18:35:54,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:35:54,503 INFO L93 Difference]: Finished difference Result 415160 states and 525345 transitions. [2019-09-07 18:35:54,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-09-07 18:35:54,504 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 440 [2019-09-07 18:35:54,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:35:55,125 INFO L225 Difference]: With dead ends: 415160 [2019-09-07 18:35:55,126 INFO L226 Difference]: Without dead ends: 247697 [2019-09-07 18:35:55,301 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1177, Invalid=4829, Unknown=0, NotChecked=0, Total=6006 [2019-09-07 18:35:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247697 states. [2019-09-07 18:35:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247697 to 214347. [2019-09-07 18:35:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214347 states. [2019-09-07 18:35:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214347 states to 214347 states and 252337 transitions. [2019-09-07 18:35:59,116 INFO L78 Accepts]: Start accepts. Automaton has 214347 states and 252337 transitions. Word has length 440 [2019-09-07 18:35:59,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:35:59,117 INFO L475 AbstractCegarLoop]: Abstraction has 214347 states and 252337 transitions. [2019-09-07 18:35:59,117 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 18:35:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 214347 states and 252337 transitions. [2019-09-07 18:35:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2019-09-07 18:35:59,127 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:35:59,128 INFO L399 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:35:59,128 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:35:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:35:59,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1499138089, now seen corresponding path program 1 times [2019-09-07 18:35:59,129 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:35:59,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:35:59,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:59,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:35:59,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:35:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:36:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 283 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:36:00,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:36:00,222 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:36:03,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:36:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:36:03,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 18:36:03,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:36:03,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:36:03,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:03,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:03,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:03,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:03,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:03,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:03,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:03,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:10,849 WARN L188 SmtUtils]: Spent 7.21 s on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2019-09-07 18:36:10,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:36:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 324 proven. 64 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-07 18:36:11,260 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:36:11,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 19 [2019-09-07 18:36:11,262 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-07 18:36:11,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-07 18:36:11,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2019-09-07 18:36:11,263 INFO L87 Difference]: Start difference. First operand 214347 states and 252337 transitions. Second operand 19 states. [2019-09-07 18:36:18,500 WARN L188 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2019-09-07 18:36:18,785 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2019-09-07 18:36:24,011 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-09-07 18:36:25,559 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-09-07 18:36:29,230 WARN L188 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2019-09-07 18:36:32,355 WARN L188 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2019-09-07 18:36:34,314 WARN L188 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2019-09-07 18:36:38,429 WARN L188 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-09-07 18:36:39,000 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2019-09-07 18:36:39,557 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-09-07 18:36:47,827 WARN L188 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2019-09-07 18:36:52,461 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-07 18:36:52,757 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-09-07 18:36:53,993 WARN L188 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-09-07 18:36:55,718 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-07 18:36:56,623 WARN L188 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-09-07 18:37:00,690 WARN L188 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-07 18:37:04,827 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-09-07 18:37:05,528 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2019-09-07 18:37:08,599 WARN L188 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-09-07 18:37:14,850 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2019-09-07 18:37:16,778 WARN L188 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-09-07 18:37:19,425 WARN L188 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-07 18:37:21,126 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2019-09-07 18:37:27,339 WARN L188 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-07 18:37:29,726 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-07 18:37:38,226 WARN L188 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-09-07 18:37:43,223 WARN L188 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2019-09-07 18:37:43,459 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-09-07 18:37:47,543 WARN L188 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2019-09-07 18:37:50,810 WARN L188 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-07 18:37:53,794 WARN L188 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-07 18:37:55,154 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2019-09-07 18:37:55,382 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-07 18:37:57,802 WARN L188 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2019-09-07 18:38:13,762 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-09-07 18:38:14,960 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2019-09-07 18:38:23,384 WARN L188 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-07 18:38:26,232 WARN L188 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 18:38:36,632 WARN L188 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2019-09-07 18:38:38,476 WARN L188 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2019-09-07 18:38:40,534 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2019-09-07 18:38:41,916 WARN L188 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-09-07 18:38:48,252 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2019-09-07 18:38:57,160 WARN L188 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2019-09-07 18:39:12,412 WARN L188 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-07 18:39:18,661 WARN L188 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-07 18:39:22,796 WARN L188 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2019-09-07 18:39:31,794 WARN L188 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-07 18:39:37,787 WARN L188 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-09-07 18:39:40,004 WARN L188 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-09-07 18:39:45,700 WARN L188 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2019-09-07 18:39:58,237 WARN L188 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2019-09-07 18:40:09,708 WARN L188 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-09-07 18:40:16,511 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2019-09-07 18:40:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:40:32,578 INFO L93 Difference]: Finished difference Result 600996 states and 722549 transitions. [2019-09-07 18:40:32,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2019-09-07 18:40:32,579 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 439 [2019-09-07 18:40:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:40:33,519 INFO L225 Difference]: With dead ends: 600996 [2019-09-07 18:40:33,519 INFO L226 Difference]: Without dead ends: 378446 [2019-09-07 18:40:33,711 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 588 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17041 ImplicationChecksByTransitivity, 80.8s TimeCoverageRelationStatistics Valid=5085, Invalid=36313, Unknown=14, NotChecked=0, Total=41412 [2019-09-07 18:40:34,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378446 states. [2019-09-07 18:40:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378446 to 338174. [2019-09-07 18:40:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338174 states. [2019-09-07 18:40:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338174 states to 338174 states and 383901 transitions. [2019-09-07 18:40:45,905 INFO L78 Accepts]: Start accepts. Automaton has 338174 states and 383901 transitions. Word has length 439 [2019-09-07 18:40:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:40:45,906 INFO L475 AbstractCegarLoop]: Abstraction has 338174 states and 383901 transitions. [2019-09-07 18:40:45,906 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-07 18:40:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 338174 states and 383901 transitions. [2019-09-07 18:40:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2019-09-07 18:40:45,926 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:40:45,927 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:40:45,927 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:40:45,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:40:45,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1249937739, now seen corresponding path program 1 times [2019-09-07 18:40:45,928 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:40:45,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:40:45,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:40:45,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:40:45,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:40:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:40:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 476 proven. 261 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-09-07 18:40:47,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:40:47,976 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:40:47,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:40:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:40:48,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:40:48,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:40:48,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:40:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 525 proven. 2 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2019-09-07 18:40:48,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:40:48,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 16 [2019-09-07 18:40:48,365 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 18:40:48,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 18:40:48,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:40:48,366 INFO L87 Difference]: Start difference. First operand 338174 states and 383901 transitions. Second operand 16 states. [2019-09-07 18:40:51,374 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-09-07 18:40:53,682 WARN L188 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-07 18:40:54,313 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-07 18:40:56,591 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2019-09-07 18:40:58,946 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2019-09-07 18:40:59,132 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-07 18:41:02,788 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-07 18:41:03,698 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-09-07 18:41:04,719 WARN L188 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2019-09-07 18:41:05,760 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2019-09-07 18:41:06,057 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2019-09-07 18:41:06,210 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-09-07 18:41:06,761 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2019-09-07 18:41:09,552 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2019-09-07 18:41:10,596 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-09-07 18:41:10,812 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2019-09-07 18:41:19,429 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-09-07 18:41:21,374 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-09-07 18:41:25,190 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2019-09-07 18:41:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:41:33,982 INFO L93 Difference]: Finished difference Result 664636 states and 760258 transitions. [2019-09-07 18:41:33,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2019-09-07 18:41:33,983 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 560 [2019-09-07 18:41:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:41:34,717 INFO L225 Difference]: With dead ends: 664636 [2019-09-07 18:41:34,717 INFO L226 Difference]: Without dead ends: 327235 [2019-09-07 18:41:34,964 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 679 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9269 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=2908, Invalid=20044, Unknown=0, NotChecked=0, Total=22952 [2019-09-07 18:41:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327235 states. [2019-09-07 18:41:42,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327235 to 317756. [2019-09-07 18:41:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317756 states. [2019-09-07 18:41:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317756 states to 317756 states and 350411 transitions. [2019-09-07 18:41:44,230 INFO L78 Accepts]: Start accepts. Automaton has 317756 states and 350411 transitions. Word has length 560 [2019-09-07 18:41:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:41:44,231 INFO L475 AbstractCegarLoop]: Abstraction has 317756 states and 350411 transitions. [2019-09-07 18:41:44,232 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 18:41:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 317756 states and 350411 transitions. [2019-09-07 18:41:44,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2019-09-07 18:41:44,250 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:41:44,250 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2019-09-07 18:41:44,250 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:41:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:41:44,251 INFO L82 PathProgramCache]: Analyzing trace with hash 194191852, now seen corresponding path program 1 times [2019-09-07 18:41:44,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:41:44,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:41:44,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:41:44,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:41:44,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:41:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:41:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 453 proven. 221 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-09-07 18:41:44,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:41:44,831 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:41:44,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:41:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:41:45,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:41:45,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:41:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 587 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2019-09-07 18:41:45,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:41:45,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 18:41:45,236 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 18:41:45,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 18:41:45,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 18:41:45,236 INFO L87 Difference]: Start difference. First operand 317756 states and 350411 transitions. Second operand 11 states. [2019-09-07 18:42:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:42:05,174 INFO L93 Difference]: Finished difference Result 650337 states and 716562 transitions. [2019-09-07 18:42:05,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 18:42:05,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 567 [2019-09-07 18:42:05,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:42:06,585 INFO L225 Difference]: With dead ends: 650337 [2019-09-07 18:42:06,585 INFO L226 Difference]: Without dead ends: 325941 [2019-09-07 18:42:06,823 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 581 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2019-09-07 18:42:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325941 states. [2019-09-07 18:42:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325941 to 311201. [2019-09-07 18:42:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311201 states. [2019-09-07 18:42:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311201 states to 311201 states and 336148 transitions. [2019-09-07 18:42:10,886 INFO L78 Accepts]: Start accepts. Automaton has 311201 states and 336148 transitions. Word has length 567 [2019-09-07 18:42:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:42:10,886 INFO L475 AbstractCegarLoop]: Abstraction has 311201 states and 336148 transitions. [2019-09-07 18:42:10,887 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 18:42:10,887 INFO L276 IsEmpty]: Start isEmpty. Operand 311201 states and 336148 transitions. [2019-09-07 18:42:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2019-09-07 18:42:10,903 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:42:10,904 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:42:10,904 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:42:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:42:10,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1830295757, now seen corresponding path program 1 times [2019-09-07 18:42:10,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:42:10,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:42:10,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:42:10,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:42:10,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:42:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:42:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 481 proven. 349 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-09-07 18:42:16,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:42:16,651 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:42:16,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:42:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:42:16,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-07 18:42:16,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:42:16,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:42:16,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:42:16,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:42:16,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:42:16,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 18:42:20,509 WARN L188 SmtUtils]: Spent 3.57 s on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2019-09-07 18:42:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 562 proven. 197 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-09-07 18:42:21,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:42:21,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-09-07 18:42:21,111 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-07 18:42:21,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-07 18:42:21,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2019-09-07 18:42:21,112 INFO L87 Difference]: Start difference. First operand 311201 states and 336148 transitions. Second operand 22 states. [2019-09-07 18:42:23,050 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-09-07 18:42:27,127 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2019-09-07 18:42:27,383 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-07 18:42:28,258 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2019-09-07 18:42:28,875 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-07 18:42:31,106 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-07 18:42:32,317 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 18:42:33,293 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-07 18:42:33,632 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2019-09-07 18:42:34,846 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2019-09-07 18:42:35,413 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-07 18:42:36,087 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-07 18:42:38,408 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2019-09-07 18:42:40,046 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-09-07 18:42:40,752 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2019-09-07 18:42:42,957 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 31 [2019-09-07 18:42:43,819 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-07 18:42:44,204 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2019-09-07 18:42:44,619 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-07 18:42:45,066 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-07 18:42:46,690 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-07 18:42:51,542 WARN L188 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-09-07 18:42:54,247 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-07 18:42:54,646 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-07 18:42:55,582 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-07 18:42:56,441 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-09-07 18:42:59,473 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-07 18:43:02,514 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-07 18:43:02,705 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2019-09-07 18:43:03,142 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2019-09-07 18:43:03,413 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-07 18:43:04,498 WARN L188 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2019-09-07 18:43:08,038 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-07 18:43:10,323 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-07 18:43:10,685 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-07 18:43:12,046 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-07 18:43:13,193 WARN L188 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-07 18:43:14,082 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2019-09-07 18:43:15,028 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2019-09-07 18:43:16,342 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-07 18:43:16,909 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-07 18:43:18,194 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2019-09-07 18:43:21,543 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-07 18:43:36,164 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2019-09-07 18:43:38,232 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-07 18:43:40,716 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-09-07 18:43:45,316 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2019-09-07 18:43:45,898 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 32 [2019-09-07 18:43:46,324 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-07 18:43:52,326 WARN L188 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-07 18:43:54,803 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-07 18:43:55,065 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-07 18:44:01,594 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2019-09-07 18:44:09,401 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 18:44:11,398 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2019-09-07 18:44:19,920 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2019-09-07 18:44:24,474 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-07 18:44:25,836 WARN L188 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-07 18:44:26,443 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-07 18:44:28,687 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2019-09-07 18:44:28,947 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-07 18:44:29,716 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2019-09-07 18:44:30,952 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2019-09-07 18:44:32,720 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2019-09-07 18:44:33,112 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-09-07 18:44:33,957 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 42 [2019-09-07 18:44:36,187 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-07 18:44:36,694 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-07 18:44:38,381 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-07 18:44:40,637 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2019-09-07 18:44:44,396 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-09-07 18:44:45,639 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2019-09-07 18:44:47,502 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-07 18:44:49,434 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2019-09-07 18:44:54,310 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2019-09-07 18:44:54,749 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-07 18:44:55,736 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2019-09-07 18:45:02,475 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2019-09-07 18:45:03,054 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-09-07 18:45:03,327 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-07 18:45:06,134 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-07 18:45:13,596 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2019-09-07 18:45:16,838 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-07 18:45:17,327 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2019-09-07 18:45:21,331 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2019-09-07 18:45:23,284 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-07 18:45:24,267 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2019-09-07 18:45:24,850 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-09-07 18:45:25,266 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-07 18:45:28,210 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-07 18:45:31,824 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-07 18:45:32,350 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2019-09-07 18:45:35,573 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2019-09-07 18:45:38,403 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2019-09-07 18:45:49,944 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-09-07 18:45:55,061 WARN L188 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2019-09-07 18:46:01,334 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-07 18:46:04,977 WARN L188 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 70 DAG size of output: 68