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/Problem03_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:22:47,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:22:47,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:22:47,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 13:22:47,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:22:47,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:22:47,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:22:47,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:22:47,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:22:47,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:22:47,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:22:47,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:22:47,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:22:47,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:22:47,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:22:47,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:22:47,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 13:22:47,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:22:47,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:22:47,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:22:47,433 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 13:22:47,447 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:22:47,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:22:47,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:22:47,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:22:47,452 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:22:47,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:22:47,452 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:22:47,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:22:47,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:22:47,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:22:47,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:22:47,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:22:47,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:22:47,454 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:22:47,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:22:47,454 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:22:47,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:22:47,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:22:47,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:22:47,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:22:47,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:22:47,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:22:47,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:22:47,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:22:47,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:22:47,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:22:47,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:22:47,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:22:47,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:22:47,487 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:22:47,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:22:47,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:22:47,507 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:22:47,508 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:22:47,509 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2019-09-07 13:22:47,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d336c74e/bdc4d05efa1f4505acb917c81c7cda23/FLAG8c9577de8 [2019-09-07 13:22:48,270 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:22:48,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2019-09-07 13:22:48,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d336c74e/bdc4d05efa1f4505acb917c81c7cda23/FLAG8c9577de8 [2019-09-07 13:22:48,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d336c74e/bdc4d05efa1f4505acb917c81c7cda23 [2019-09-07 13:22:48,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:22:48,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:22:48,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:22:48,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:22:48,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:22:48,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:22:48" (1/1) ... [2019-09-07 13:22:48,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad267df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:48, skipping insertion in model container [2019-09-07 13:22:48,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:22:48" (1/1) ... [2019-09-07 13:22:48,502 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:22:48,589 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:22:49,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:22:49,350 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:22:49,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:22:49,740 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:22:49,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49 WrapperNode [2019-09-07 13:22:49,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:22:49,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:22:49,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:22:49,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:22:49,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49" (1/1) ... [2019-09-07 13:22:49,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49" (1/1) ... [2019-09-07 13:22:49,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49" (1/1) ... [2019-09-07 13:22:49,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49" (1/1) ... [2019-09-07 13:22:49,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49" (1/1) ... [2019-09-07 13:22:49,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49" (1/1) ... [2019-09-07 13:22:49,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49" (1/1) ... [2019-09-07 13:22:49,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:22:49,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:22:49,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:22:49,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:22:49,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49" (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 13:22:49,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:22:49,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:22:49,966 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:22:49,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:22:49,966 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:22:49,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:22:49,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:22:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:22:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:22:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:22:49,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:22:52,018 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:22:52,018 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:22:52,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:22:52 BoogieIcfgContainer [2019-09-07 13:22:52,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:22:52,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:22:52,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:22:52,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:22:52,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:22:48" (1/3) ... [2019-09-07 13:22:52,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c65d352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:22:52, skipping insertion in model container [2019-09-07 13:22:52,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:22:49" (2/3) ... [2019-09-07 13:22:52,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c65d352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:22:52, skipping insertion in model container [2019-09-07 13:22:52,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:22:52" (3/3) ... [2019-09-07 13:22:52,033 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label28.c [2019-09-07 13:22:52,045 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:22:52,054 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:22:52,074 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:22:52,130 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:22:52,131 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:22:52,131 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:22:52,132 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:22:52,133 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:22:52,133 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:22:52,133 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:22:52,133 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:22:52,133 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:22:52,179 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-07 13:22:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-09-07 13:22:52,200 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:22:52,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:52,203 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:22:52,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:22:52,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1343441115, now seen corresponding path program 1 times [2019-09-07 13:22:52,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:22:52,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:22:52,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:52,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:22:52,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:22:53,049 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 13:22:53,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:22:53,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:22:53,057 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:22:53,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:22:53,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:22:53,075 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2019-09-07 13:22:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:22:54,416 INFO L93 Difference]: Finished difference Result 835 states and 1476 transitions. [2019-09-07 13:22:54,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:22:54,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-09-07 13:22:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:22:54,438 INFO L225 Difference]: With dead ends: 835 [2019-09-07 13:22:54,438 INFO L226 Difference]: Without dead ends: 462 [2019-09-07 13:22:54,447 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 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 13:22:54,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-09-07 13:22:54,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2019-09-07 13:22:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-09-07 13:22:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 739 transitions. [2019-09-07 13:22:54,534 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 739 transitions. Word has length 158 [2019-09-07 13:22:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:22:54,535 INFO L475 AbstractCegarLoop]: Abstraction has 460 states and 739 transitions. [2019-09-07 13:22:54,535 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:22:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 739 transitions. [2019-09-07 13:22:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-09-07 13:22:54,543 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:22:54,543 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:22:54,544 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:22:54,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:22:54,544 INFO L82 PathProgramCache]: Analyzing trace with hash 291173826, now seen corresponding path program 1 times [2019-09-07 13:22:54,545 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:22:54,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:22:54,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:54,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:22:54,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:22:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:22:54,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:22:54,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:22:54,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:22:54,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:22:54,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:22:54,751 INFO L87 Difference]: Start difference. First operand 460 states and 739 transitions. Second operand 6 states. [2019-09-07 13:22:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:22:56,598 INFO L93 Difference]: Finished difference Result 1391 states and 2302 transitions. [2019-09-07 13:22:56,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:22:56,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2019-09-07 13:22:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:22:56,608 INFO L225 Difference]: With dead ends: 1391 [2019-09-07 13:22:56,608 INFO L226 Difference]: Without dead ends: 937 [2019-09-07 13:22:56,613 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 13:22:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2019-09-07 13:22:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 899. [2019-09-07 13:22:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-09-07 13:22:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1431 transitions. [2019-09-07 13:22:56,690 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1431 transitions. Word has length 167 [2019-09-07 13:22:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:22:56,691 INFO L475 AbstractCegarLoop]: Abstraction has 899 states and 1431 transitions. [2019-09-07 13:22:56,691 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:22:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1431 transitions. [2019-09-07 13:22:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-09-07 13:22:56,696 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:22:56,696 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:22:56,696 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:22:56,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:22:56,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1075620975, now seen corresponding path program 1 times [2019-09-07 13:22:56,697 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:22:56,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:22:56,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:56,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:22:56,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:22:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:22:56,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:22:56,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:22:56,966 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:22:56,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:22:56,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:22:56,967 INFO L87 Difference]: Start difference. First operand 899 states and 1431 transitions. Second operand 3 states. [2019-09-07 13:22:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:22:58,199 INFO L93 Difference]: Finished difference Result 2635 states and 4271 transitions. [2019-09-07 13:22:58,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:22:58,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-09-07 13:22:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:22:58,213 INFO L225 Difference]: With dead ends: 2635 [2019-09-07 13:22:58,213 INFO L226 Difference]: Without dead ends: 1742 [2019-09-07 13:22:58,217 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 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 13:22:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2019-09-07 13:22:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1737. [2019-09-07 13:22:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2019-09-07 13:22:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2653 transitions. [2019-09-07 13:22:58,309 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2653 transitions. Word has length 170 [2019-09-07 13:22:58,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:22:58,312 INFO L475 AbstractCegarLoop]: Abstraction has 1737 states and 2653 transitions. [2019-09-07 13:22:58,312 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:22:58,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2653 transitions. [2019-09-07 13:22:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-09-07 13:22:58,330 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:22:58,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:58,331 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:22:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:22:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash -558199390, now seen corresponding path program 1 times [2019-09-07 13:22:58,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:22:58,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:22:58,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:58,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:22:58,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:22:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:22:58,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:22:58,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:22:58,585 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:22:58,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:22:58,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:22:58,586 INFO L87 Difference]: Start difference. First operand 1737 states and 2653 transitions. Second operand 3 states. [2019-09-07 13:22:59,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:22:59,832 INFO L93 Difference]: Finished difference Result 5148 states and 8066 transitions. [2019-09-07 13:22:59,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:22:59,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-09-07 13:22:59,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:22:59,856 INFO L225 Difference]: With dead ends: 5148 [2019-09-07 13:22:59,856 INFO L226 Difference]: Without dead ends: 3417 [2019-09-07 13:22:59,862 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 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 13:22:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2019-09-07 13:22:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3415. [2019-09-07 13:22:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3415 states. [2019-09-07 13:22:59,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 5080 transitions. [2019-09-07 13:22:59,984 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 5080 transitions. Word has length 190 [2019-09-07 13:22:59,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:22:59,984 INFO L475 AbstractCegarLoop]: Abstraction has 3415 states and 5080 transitions. [2019-09-07 13:22:59,985 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:22:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 5080 transitions. [2019-09-07 13:22:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-09-07 13:22:59,998 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:22:59,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:59,999 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:00,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:00,000 INFO L82 PathProgramCache]: Analyzing trace with hash 2059611338, now seen corresponding path program 1 times [2019-09-07 13:23:00,000 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:00,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:00,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:00,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:00,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:23:00,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:23:00,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:23:00,164 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:23:00,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:23:00,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:23:00,165 INFO L87 Difference]: Start difference. First operand 3415 states and 5080 transitions. Second operand 6 states. [2019-09-07 13:23:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:23:01,727 INFO L93 Difference]: Finished difference Result 8666 states and 13711 transitions. [2019-09-07 13:23:01,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:23:01,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2019-09-07 13:23:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:23:01,767 INFO L225 Difference]: With dead ends: 8666 [2019-09-07 13:23:01,767 INFO L226 Difference]: Without dead ends: 5257 [2019-09-07 13:23:01,780 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 13:23:01,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2019-09-07 13:23:01,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 5185. [2019-09-07 13:23:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5185 states. [2019-09-07 13:23:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 6866 transitions. [2019-09-07 13:23:01,956 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 6866 transitions. Word has length 195 [2019-09-07 13:23:01,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:23:01,956 INFO L475 AbstractCegarLoop]: Abstraction has 5185 states and 6866 transitions. [2019-09-07 13:23:01,956 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:23:01,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 6866 transitions. [2019-09-07 13:23:01,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-09-07 13:23:01,972 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:23:01,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:01,972 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:01,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:01,973 INFO L82 PathProgramCache]: Analyzing trace with hash 903864199, now seen corresponding path program 1 times [2019-09-07 13:23:01,973 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:01,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:01,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:01,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:01,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:23:02,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:23:02,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:23:02,269 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:23:02,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:23:02,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:23:02,271 INFO L87 Difference]: Start difference. First operand 5185 states and 6866 transitions. Second operand 6 states. [2019-09-07 13:23:03,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:23:03,838 INFO L93 Difference]: Finished difference Result 10468 states and 14252 transitions. [2019-09-07 13:23:03,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:23:03,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2019-09-07 13:23:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:23:03,869 INFO L225 Difference]: With dead ends: 10468 [2019-09-07 13:23:03,869 INFO L226 Difference]: Without dead ends: 5289 [2019-09-07 13:23:03,886 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 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 13:23:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2019-09-07 13:23:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 5231. [2019-09-07 13:23:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5231 states. [2019-09-07 13:23:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 6715 transitions. [2019-09-07 13:23:04,084 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 6715 transitions. Word has length 216 [2019-09-07 13:23:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:23:04,085 INFO L475 AbstractCegarLoop]: Abstraction has 5231 states and 6715 transitions. [2019-09-07 13:23:04,085 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:23:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 6715 transitions. [2019-09-07 13:23:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-09-07 13:23:04,102 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:23:04,103 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:04,103 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:04,104 INFO L82 PathProgramCache]: Analyzing trace with hash 466476275, now seen corresponding path program 1 times [2019-09-07 13:23:04,104 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:04,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:04,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:04,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:04,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:23:04,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:23:04,459 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 13:23:04,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:04,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 13:23:04,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:23:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-09-07 13:23:04,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:23:04,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:23:04,829 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:23:04,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:23:04,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:23:04,830 INFO L87 Difference]: Start difference. First operand 5231 states and 6715 transitions. Second operand 9 states. [2019-09-07 13:23:10,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:23:10,152 INFO L93 Difference]: Finished difference Result 21299 states and 33782 transitions. [2019-09-07 13:23:10,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-07 13:23:10,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2019-09-07 13:23:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:23:10,283 INFO L225 Difference]: With dead ends: 21299 [2019-09-07 13:23:10,283 INFO L226 Difference]: Without dead ends: 16074 [2019-09-07 13:23:10,318 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2019-09-07 13:23:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16074 states. [2019-09-07 13:23:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16074 to 15392. [2019-09-07 13:23:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15392 states. [2019-09-07 13:23:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15392 states to 15392 states and 19688 transitions. [2019-09-07 13:23:11,048 INFO L78 Accepts]: Start accepts. Automaton has 15392 states and 19688 transitions. Word has length 228 [2019-09-07 13:23:11,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:23:11,048 INFO L475 AbstractCegarLoop]: Abstraction has 15392 states and 19688 transitions. [2019-09-07 13:23:11,049 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:23:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 15392 states and 19688 transitions. [2019-09-07 13:23:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-09-07 13:23:11,087 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:23:11,087 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:11,088 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash -2091244716, now seen corresponding path program 1 times [2019-09-07 13:23:11,088 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:11,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:11,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:11,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:11,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:23:11,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:23:11,238 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:23:11,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:11,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:23:11,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:23:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-09-07 13:23:11,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:23:11,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:23:11,803 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:23:11,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:23:11,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:23:11,803 INFO L87 Difference]: Start difference. First operand 15392 states and 19688 transitions. Second operand 9 states. [2019-09-07 13:23:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:23:15,500 INFO L93 Difference]: Finished difference Result 39445 states and 52947 transitions. [2019-09-07 13:23:15,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 13:23:15,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 233 [2019-09-07 13:23:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:23:15,619 INFO L225 Difference]: With dead ends: 39445 [2019-09-07 13:23:15,620 INFO L226 Difference]: Without dead ends: 24906 [2019-09-07 13:23:15,668 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2019-09-07 13:23:15,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24906 states. [2019-09-07 13:23:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24906 to 23188. [2019-09-07 13:23:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23188 states. [2019-09-07 13:23:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23188 states to 23188 states and 29113 transitions. [2019-09-07 13:23:16,428 INFO L78 Accepts]: Start accepts. Automaton has 23188 states and 29113 transitions. Word has length 233 [2019-09-07 13:23:16,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:23:16,428 INFO L475 AbstractCegarLoop]: Abstraction has 23188 states and 29113 transitions. [2019-09-07 13:23:16,428 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:23:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 23188 states and 29113 transitions. [2019-09-07 13:23:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-09-07 13:23:16,467 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:23:16,468 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, 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] [2019-09-07 13:23:16,468 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:16,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:16,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1680034043, now seen corresponding path program 1 times [2019-09-07 13:23:16,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:16,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:16,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:16,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:16,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:23:16,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:23:16,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-07 13:23:16,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:23:16,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:23:16,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:23:16,740 INFO L87 Difference]: Start difference. First operand 23188 states and 29113 transitions. Second operand 7 states. [2019-09-07 13:23:20,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:23:20,833 INFO L93 Difference]: Finished difference Result 71886 states and 96180 transitions. [2019-09-07 13:23:20,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 13:23:20,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2019-09-07 13:23:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:23:21,155 INFO L225 Difference]: With dead ends: 71886 [2019-09-07 13:23:21,156 INFO L226 Difference]: Without dead ends: 49557 [2019-09-07 13:23:21,232 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:23:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49557 states. [2019-09-07 13:23:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49557 to 48207. [2019-09-07 13:23:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48207 states. [2019-09-07 13:23:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48207 states to 48207 states and 60669 transitions. [2019-09-07 13:23:22,581 INFO L78 Accepts]: Start accepts. Automaton has 48207 states and 60669 transitions. Word has length 235 [2019-09-07 13:23:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:23:22,582 INFO L475 AbstractCegarLoop]: Abstraction has 48207 states and 60669 transitions. [2019-09-07 13:23:22,582 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:23:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 48207 states and 60669 transitions. [2019-09-07 13:23:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-09-07 13:23:22,654 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:23:22,654 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:22,654 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:22,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:22,655 INFO L82 PathProgramCache]: Analyzing trace with hash -641110787, now seen corresponding path program 1 times [2019-09-07 13:23:22,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:22,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:22,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:22,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:22,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:23:22,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:23:22,893 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) [2019-09-07 13:23:22,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:23:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:23,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:23:23,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:23:23,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:23:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:23:23,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:23:23,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-09-07 13:23:23,228 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 13:23:23,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 13:23:23,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-07 13:23:23,229 INFO L87 Difference]: Start difference. First operand 48207 states and 60669 transitions. Second operand 10 states. [2019-09-07 13:23:28,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:23:28,473 INFO L93 Difference]: Finished difference Result 114655 states and 147289 transitions. [2019-09-07 13:23:28,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 13:23:28,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 249 [2019-09-07 13:23:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:23:28,960 INFO L225 Difference]: With dead ends: 114655 [2019-09-07 13:23:28,961 INFO L226 Difference]: Without dead ends: 66876 [2019-09-07 13:23:29,028 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=345, Invalid=1215, Unknown=0, NotChecked=0, Total=1560 [2019-09-07 13:23:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66876 states. [2019-09-07 13:23:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66876 to 64110. [2019-09-07 13:23:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64110 states. [2019-09-07 13:23:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64110 states to 64110 states and 78348 transitions. [2019-09-07 13:23:30,517 INFO L78 Accepts]: Start accepts. Automaton has 64110 states and 78348 transitions. Word has length 249 [2019-09-07 13:23:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:23:30,518 INFO L475 AbstractCegarLoop]: Abstraction has 64110 states and 78348 transitions. [2019-09-07 13:23:30,518 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 13:23:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 64110 states and 78348 transitions. [2019-09-07 13:23:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-09-07 13:23:30,566 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:23:30,567 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:30,567 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1401629024, now seen corresponding path program 1 times [2019-09-07 13:23:30,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:30,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:30,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:30,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:30,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:23:31,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:23:31,200 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 13:23:31,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:31,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:23:31,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:23:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-07 13:23:31,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:23:31,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 13:23:31,475 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:23:31,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:23:31,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:23:31,476 INFO L87 Difference]: Start difference. First operand 64110 states and 78348 transitions. Second operand 7 states. [2019-09-07 13:23:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:23:36,978 INFO L93 Difference]: Finished difference Result 134500 states and 174648 transitions. [2019-09-07 13:23:36,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 13:23:36,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2019-09-07 13:23:36,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:23:37,337 INFO L225 Difference]: With dead ends: 134500 [2019-09-07 13:23:37,337 INFO L226 Difference]: Without dead ends: 71249 [2019-09-07 13:23:37,448 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2019-09-07 13:23:37,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71249 states. [2019-09-07 13:23:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71249 to 67010. [2019-09-07 13:23:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67010 states. [2019-09-07 13:23:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67010 states to 67010 states and 80195 transitions. [2019-09-07 13:23:41,632 INFO L78 Accepts]: Start accepts. Automaton has 67010 states and 80195 transitions. Word has length 256 [2019-09-07 13:23:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:23:41,633 INFO L475 AbstractCegarLoop]: Abstraction has 67010 states and 80195 transitions. [2019-09-07 13:23:41,633 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:23:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 67010 states and 80195 transitions. [2019-09-07 13:23:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2019-09-07 13:23:41,693 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:23:41,693 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-07 13:23:41,694 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1749183767, now seen corresponding path program 1 times [2019-09-07 13:23:41,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:41,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:41,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:41,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:41,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-07 13:23:42,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:23:42,111 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) [2019-09-07 13:23:42,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:23:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:42,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 13:23:42,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:23:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 86 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 13:23:42,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:23:42,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2019-09-07 13:23:42,431 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:23:42,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:23:42,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:23:42,432 INFO L87 Difference]: Start difference. First operand 67010 states and 80195 transitions. Second operand 8 states. [2019-09-07 13:23:47,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:23:47,640 INFO L93 Difference]: Finished difference Result 132750 states and 170231 transitions. [2019-09-07 13:23:47,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 13:23:47,641 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2019-09-07 13:23:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:23:48,004 INFO L225 Difference]: With dead ends: 132750 [2019-09-07 13:23:48,004 INFO L226 Difference]: Without dead ends: 75375 [2019-09-07 13:23:48,123 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2019-09-07 13:23:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75375 states. [2019-09-07 13:23:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75375 to 72820. [2019-09-07 13:23:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72820 states. [2019-09-07 13:23:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72820 states to 72820 states and 84175 transitions. [2019-09-07 13:23:50,246 INFO L78 Accepts]: Start accepts. Automaton has 72820 states and 84175 transitions. Word has length 262 [2019-09-07 13:23:50,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:23:50,246 INFO L475 AbstractCegarLoop]: Abstraction has 72820 states and 84175 transitions. [2019-09-07 13:23:50,246 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:23:50,247 INFO L276 IsEmpty]: Start isEmpty. Operand 72820 states and 84175 transitions. [2019-09-07 13:23:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2019-09-07 13:23:50,301 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:23:50,301 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:23:50,301 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:50,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:50,302 INFO L82 PathProgramCache]: Analyzing trace with hash -224342286, now seen corresponding path program 1 times [2019-09-07 13:23:50,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:50,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:50,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:50,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:50,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 130 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:23:51,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:23:51,263 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 13:23:51,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:51,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-07 13:23:51,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:23:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-09-07 13:23:51,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:23:51,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 18 [2019-09-07 13:23:51,568 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-07 13:23:51,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-07 13:23:51,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2019-09-07 13:23:51,569 INFO L87 Difference]: Start difference. First operand 72820 states and 84175 transitions. Second operand 18 states. [2019-09-07 13:23:55,366 WARN L188 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-09-07 13:23:58,750 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-07 13:24:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:24:02,552 INFO L93 Difference]: Finished difference Result 189006 states and 248120 transitions. [2019-09-07 13:24:02,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-09-07 13:24:02,552 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 287 [2019-09-07 13:24:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:24:03,013 INFO L225 Difference]: With dead ends: 189006 [2019-09-07 13:24:03,013 INFO L226 Difference]: Without dead ends: 118316 [2019-09-07 13:24:03,121 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=708, Invalid=2372, Unknown=0, NotChecked=0, Total=3080 [2019-09-07 13:24:03,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118316 states. [2019-09-07 13:24:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118316 to 108737. [2019-09-07 13:24:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108737 states. [2019-09-07 13:24:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108737 states to 108737 states and 129049 transitions. [2019-09-07 13:24:07,934 INFO L78 Accepts]: Start accepts. Automaton has 108737 states and 129049 transitions. Word has length 287 [2019-09-07 13:24:07,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:24:07,934 INFO L475 AbstractCegarLoop]: Abstraction has 108737 states and 129049 transitions. [2019-09-07 13:24:07,935 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-07 13:24:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 108737 states and 129049 transitions. [2019-09-07 13:24:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-09-07 13:24:08,017 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:24:08,017 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:24:08,017 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:24:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:24:08,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1139740385, now seen corresponding path program 1 times [2019-09-07 13:24:08,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:24:08,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:24:08,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:24:08,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:24:08,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:24:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:24:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 274 proven. 106 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 13:24:08,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:24:08,411 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) [2019-09-07 13:24:08,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:24:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:24:08,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-07 13:24:08,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:24:08,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:24:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-09-07 13:24:08,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:24:08,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2019-09-07 13:24:08,960 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 13:24:08,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 13:24:08,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-09-07 13:24:08,962 INFO L87 Difference]: Start difference. First operand 108737 states and 129049 transitions. Second operand 15 states. [2019-09-07 13:24:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:24:20,927 INFO L93 Difference]: Finished difference Result 247951 states and 304899 transitions. [2019-09-07 13:24:20,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-09-07 13:24:20,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 333 [2019-09-07 13:24:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:24:24,313 INFO L225 Difference]: With dead ends: 247951 [2019-09-07 13:24:24,313 INFO L226 Difference]: Without dead ends: 142212 [2019-09-07 13:24:24,437 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2295 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1055, Invalid=5425, Unknown=0, NotChecked=0, Total=6480 [2019-09-07 13:24:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142212 states. [2019-09-07 13:24:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142212 to 136297. [2019-09-07 13:24:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136297 states. [2019-09-07 13:24:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136297 states to 136297 states and 158297 transitions. [2019-09-07 13:24:27,055 INFO L78 Accepts]: Start accepts. Automaton has 136297 states and 158297 transitions. Word has length 333 [2019-09-07 13:24:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:24:27,056 INFO L475 AbstractCegarLoop]: Abstraction has 136297 states and 158297 transitions. [2019-09-07 13:24:27,056 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 13:24:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 136297 states and 158297 transitions. [2019-09-07 13:24:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2019-09-07 13:24:27,147 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:24:27,147 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, 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, 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] [2019-09-07 13:24:27,148 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:24:27,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:24:27,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1290380103, now seen corresponding path program 1 times [2019-09-07 13:24:27,148 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:24:27,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:24:27,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:24:27,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:24:27,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:24:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:24:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 276 proven. 34 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-09-07 13:24:28,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:24:28,030 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 13:24:28,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:24:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:24:28,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-07 13:24:28,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:24:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2019-09-07 13:24:28,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:24:28,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-09-07 13:24:28,447 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 13:24:28,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 13:24:28,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:24:28,448 INFO L87 Difference]: Start difference. First operand 136297 states and 158297 transitions. Second operand 12 states. [2019-09-07 13:24:46,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:24:46,591 INFO L93 Difference]: Finished difference Result 372841 states and 477879 transitions. [2019-09-07 13:24:46,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-09-07 13:24:46,591 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 371 [2019-09-07 13:24:46,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:24:47,725 INFO L225 Difference]: With dead ends: 372841 [2019-09-07 13:24:47,725 INFO L226 Difference]: Without dead ends: 241260 [2019-09-07 13:24:47,978 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=657, Invalid=1995, Unknown=0, NotChecked=0, Total=2652 [2019-09-07 13:24:48,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241260 states. [2019-09-07 13:24:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241260 to 228766. [2019-09-07 13:24:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228766 states. [2019-09-07 13:24:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228766 states to 228766 states and 265498 transitions. [2019-09-07 13:24:53,539 INFO L78 Accepts]: Start accepts. Automaton has 228766 states and 265498 transitions. Word has length 371 [2019-09-07 13:24:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:24:53,540 INFO L475 AbstractCegarLoop]: Abstraction has 228766 states and 265498 transitions. [2019-09-07 13:24:53,540 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 13:24:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 228766 states and 265498 transitions. [2019-09-07 13:24:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2019-09-07 13:24:54,470 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:24:54,470 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, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:24:54,470 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:24:54,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:24:54,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1781922258, now seen corresponding path program 1 times [2019-09-07 13:24:54,471 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:24:54,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:24:54,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:24:54,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:24:54,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:24:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:24:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 270 proven. 70 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-09-07 13:24:54,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:24:54,787 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:24:54,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:24:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:24:55,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 13:24:55,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:24:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-09-07 13:24:55,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:24:55,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2019-09-07 13:24:55,336 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:24:55,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:24:55,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:24:55,337 INFO L87 Difference]: Start difference. First operand 228766 states and 265498 transitions. Second operand 6 states. [2019-09-07 13:25:06,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:25:06,768 INFO L93 Difference]: Finished difference Result 615192 states and 742179 transitions. [2019-09-07 13:25:06,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:25:06,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 398 [2019-09-07 13:25:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:25:08,878 INFO L225 Difference]: With dead ends: 615192 [2019-09-07 13:25:08,879 INFO L226 Difference]: Without dead ends: 391781 [2019-09-07 13:25:09,456 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:25:10,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391781 states. [2019-09-07 13:25:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391781 to 381957. [2019-09-07 13:25:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381957 states. [2019-09-07 13:25:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381957 states to 381957 states and 446282 transitions. [2019-09-07 13:25:22,764 INFO L78 Accepts]: Start accepts. Automaton has 381957 states and 446282 transitions. Word has length 398 [2019-09-07 13:25:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:25:22,764 INFO L475 AbstractCegarLoop]: Abstraction has 381957 states and 446282 transitions. [2019-09-07 13:25:22,764 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:25:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 381957 states and 446282 transitions. [2019-09-07 13:25:28,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2019-09-07 13:25:28,104 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:25:28,104 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:28,104 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:25:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:25:28,104 INFO L82 PathProgramCache]: Analyzing trace with hash 55693883, now seen corresponding path program 1 times [2019-09-07 13:25:28,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:25:28,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:25:28,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:28,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:28,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 245 proven. 166 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-09-07 13:25:28,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:25:28,452 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:25:28,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:28,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:25:28,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:25:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2019-09-07 13:25:28,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:25:28,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:25:28,883 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:25:28,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:25:28,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:25:28,885 INFO L87 Difference]: Start difference. First operand 381957 states and 446282 transitions. Second operand 9 states. [2019-09-07 13:25:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:25:38,590 INFO L93 Difference]: Finished difference Result 782562 states and 915127 transitions. [2019-09-07 13:25:38,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 13:25:38,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 417 [2019-09-07 13:25:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:25:39,966 INFO L225 Difference]: With dead ends: 782562 [2019-09-07 13:25:39,966 INFO L226 Difference]: Without dead ends: 407487 [2019-09-07 13:25:40,430 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 425 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2019-09-07 13:25:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407487 states. [2019-09-07 13:25:55,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407487 to 401108. [2019-09-07 13:25:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401108 states. [2019-09-07 13:25:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401108 states to 401108 states and 467414 transitions. [2019-09-07 13:25:56,478 INFO L78 Accepts]: Start accepts. Automaton has 401108 states and 467414 transitions. Word has length 417 [2019-09-07 13:25:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:25:56,478 INFO L475 AbstractCegarLoop]: Abstraction has 401108 states and 467414 transitions. [2019-09-07 13:25:56,478 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:25:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 401108 states and 467414 transitions. [2019-09-07 13:25:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2019-09-07 13:25:56,827 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:25:56,827 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:56,827 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:25:56,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:25:56,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1082139085, now seen corresponding path program 1 times [2019-09-07 13:25:56,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:25:56,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:25:56,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:56,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:56,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:25:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 280 proven. 174 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-09-07 13:25:57,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:25:57,106 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:25:57,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:25:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:25:57,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:25:57,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:25:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2019-09-07 13:25:58,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:25:58,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:25:58,608 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:25:58,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:25:58,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:25:58,609 INFO L87 Difference]: Start difference. First operand 401108 states and 467414 transitions. Second operand 9 states. [2019-09-07 13:26:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:26:43,556 INFO L93 Difference]: Finished difference Result 1186354 states and 1553193 transitions. [2019-09-07 13:26:43,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-07 13:26:43,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 431 [2019-09-07 13:26:43,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:26:48,099 INFO L225 Difference]: With dead ends: 1186354 [2019-09-07 13:26:48,099 INFO L226 Difference]: Without dead ends: 792335 [2019-09-07 13:26:49,584 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=400, Invalid=1762, Unknown=0, NotChecked=0, Total=2162 [2019-09-07 13:26:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792335 states. [2019-09-07 13:27:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792335 to 727694. [2019-09-07 13:27:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727694 states. [2019-09-07 13:27:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727694 states to 727694 states and 841001 transitions. [2019-09-07 13:27:27,156 INFO L78 Accepts]: Start accepts. Automaton has 727694 states and 841001 transitions. Word has length 431 [2019-09-07 13:27:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:27:27,156 INFO L475 AbstractCegarLoop]: Abstraction has 727694 states and 841001 transitions. [2019-09-07 13:27:27,156 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:27:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 727694 states and 841001 transitions. [2019-09-07 13:27:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2019-09-07 13:27:36,868 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:27:36,868 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:27:36,869 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:27:36,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:27:36,869 INFO L82 PathProgramCache]: Analyzing trace with hash -213803687, now seen corresponding path program 1 times [2019-09-07 13:27:36,869 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:27:36,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:27:36,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:36,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:27:36,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 278 proven. 231 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-09-07 13:27:37,292 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:27:37,292 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:27:37,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:27:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:37,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 13:27:37,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:27:37,739 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 363 proven. 6 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-09-07 13:27:37,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:27:37,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-09-07 13:27:37,745 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 13:27:37,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 13:27:37,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:27:37,746 INFO L87 Difference]: Start difference. First operand 727694 states and 841001 transitions. Second operand 12 states. [2019-09-07 13:28:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:24,848 INFO L93 Difference]: Finished difference Result 2288339 states and 2692644 transitions. [2019-09-07 13:28:24,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-07 13:28:24,848 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 440 [2019-09-07 13:28:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:31,571 INFO L225 Difference]: With dead ends: 2288339 [2019-09-07 13:28:31,571 INFO L226 Difference]: Without dead ends: 1569180 [2019-09-07 13:28:33,725 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 460 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2019-09-07 13:28:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569180 states. [2019-09-07 13:29:55,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569180 to 1540081. [2019-09-07 13:29:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1540081 states.