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/Problem18_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:49:06,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:49:06,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:49:06,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 22:49:06,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 22:49:06,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 22:49:06,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 22:49:06,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 22:49:06,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 22:49:06,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 22:49:06,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 22:49:06,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 22:49:06,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 22:49:06,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 22:49:06,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 22:49:06,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 22:49:06,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 22:49:06,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:49:06,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:49:06,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:49:06,885 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 22:49:06,900 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:49:06,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:49:06,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:49:06,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:49:06,902 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:49:06,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:49:06,903 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:49:06,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:49:06,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:49:06,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:49:06,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:49:06,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:49:06,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:49:06,905 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:49:06,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:49:06,906 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:49:06,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:49:06,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:49:06,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:49:06,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:49:06,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:49:06,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:49:06,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:49:06,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:49:06,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:49:06,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:49:06,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:49:06,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:49:06,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:49:06,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:49:06,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:49:06,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:49:06,966 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:49:06,966 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:49:06,967 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label58.c [2019-09-07 22:49:07,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f401570b/91252a653a33489a8a754dc91b936204/FLAG13758c9f5 [2019-09-07 22:49:07,815 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:49:07,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label58.c [2019-09-07 22:49:07,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f401570b/91252a653a33489a8a754dc91b936204/FLAG13758c9f5 [2019-09-07 22:49:07,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f401570b/91252a653a33489a8a754dc91b936204 [2019-09-07 22:49:07,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:49:07,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:49:07,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:49:07,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:49:07,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:49:07,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:49:07" (1/1) ... [2019-09-07 22:49:07,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d2eccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:07, skipping insertion in model container [2019-09-07 22:49:07,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:49:07" (1/1) ... [2019-09-07 22:49:07,913 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:49:08,033 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:49:09,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:49:09,061 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:49:09,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:49:09,528 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:49:09,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09 WrapperNode [2019-09-07 22:49:09,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:49:09,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:49:09,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:49:09,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:49:09,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09" (1/1) ... [2019-09-07 22:49:09,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09" (1/1) ... [2019-09-07 22:49:09,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09" (1/1) ... [2019-09-07 22:49:09,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09" (1/1) ... [2019-09-07 22:49:09,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09" (1/1) ... [2019-09-07 22:49:09,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09" (1/1) ... [2019-09-07 22:49:09,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09" (1/1) ... [2019-09-07 22:49:09,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:49:09,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:49:09,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:49:09,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:49:09,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09" (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 22:49:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:49:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:49:09,876 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:49:09,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:49:09,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 22:49:09,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:49:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:49:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:49:09,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 22:49:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:49:09,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:49:09,879 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:49:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:49:09,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:49:09,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:49:13,370 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:49:13,370 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:49:13,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:49:13 BoogieIcfgContainer [2019-09-07 22:49:13,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:49:13,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:49:13,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:49:13,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:49:13,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:49:07" (1/3) ... [2019-09-07 22:49:13,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624b2c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:49:13, skipping insertion in model container [2019-09-07 22:49:13,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:49:09" (2/3) ... [2019-09-07 22:49:13,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624b2c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:49:13, skipping insertion in model container [2019-09-07 22:49:13,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:49:13" (3/3) ... [2019-09-07 22:49:13,387 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label58.c [2019-09-07 22:49:13,398 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:49:13,408 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:49:13,427 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:49:13,477 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:49:13,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:49:13,478 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:49:13,478 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:49:13,478 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:49:13,478 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:49:13,478 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:49:13,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:49:13,479 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:49:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-09-07 22:49:13,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-07 22:49:13,531 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:13,533 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] [2019-09-07 22:49:13,535 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:13,541 INFO L82 PathProgramCache]: Analyzing trace with hash -27900295, now seen corresponding path program 1 times [2019-09-07 22:49:13,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:13,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:13,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:13,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:13,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:13,984 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 22:49:13,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:49:13,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 22:49:13,992 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 22:49:14,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 22:49:14,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 22:49:14,008 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-09-07 22:49:18,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:18,533 INFO L93 Difference]: Finished difference Result 2248 states and 4319 transitions. [2019-09-07 22:49:18,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 22:49:18,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-09-07 22:49:18,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:18,568 INFO L225 Difference]: With dead ends: 2248 [2019-09-07 22:49:18,568 INFO L226 Difference]: Without dead ends: 1412 [2019-09-07 22:49:18,577 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 22:49:18,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-09-07 22:49:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-09-07 22:49:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-09-07 22:49:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2558 transitions. [2019-09-07 22:49:18,718 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2558 transitions. Word has length 46 [2019-09-07 22:49:18,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:18,719 INFO L475 AbstractCegarLoop]: Abstraction has 1412 states and 2558 transitions. [2019-09-07 22:49:18,719 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 22:49:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2558 transitions. [2019-09-07 22:49:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-07 22:49:18,726 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:18,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:18,726 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:18,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1702034768, now seen corresponding path program 1 times [2019-09-07 22:49:18,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:18,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:18,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:18,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:18,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:49:18,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:49:18,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:49:18,972 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:49:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:49:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:49:18,974 INFO L87 Difference]: Start difference. First operand 1412 states and 2558 transitions. Second operand 6 states. [2019-09-07 22:49:24,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:24,636 INFO L93 Difference]: Finished difference Result 4291 states and 7809 transitions. [2019-09-07 22:49:24,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:49:24,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2019-09-07 22:49:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:24,659 INFO L225 Difference]: With dead ends: 4291 [2019-09-07 22:49:24,659 INFO L226 Difference]: Without dead ends: 2885 [2019-09-07 22:49:24,664 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 22:49:24,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2019-09-07 22:49:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2864. [2019-09-07 22:49:24,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-09-07 22:49:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4821 transitions. [2019-09-07 22:49:24,780 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4821 transitions. Word has length 134 [2019-09-07 22:49:24,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:24,781 INFO L475 AbstractCegarLoop]: Abstraction has 2864 states and 4821 transitions. [2019-09-07 22:49:24,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:49:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4821 transitions. [2019-09-07 22:49:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-09-07 22:49:24,786 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:24,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:24,787 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:24,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1726184591, now seen corresponding path program 1 times [2019-09-07 22:49:24,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:24,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:24,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:24,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:24,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:49:25,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:49:25,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:49:25,055 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:49:25,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:49:25,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:49:25,056 INFO L87 Difference]: Start difference. First operand 2864 states and 4821 transitions. Second operand 6 states. [2019-09-07 22:49:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:30,844 INFO L93 Difference]: Finished difference Result 8688 states and 14937 transitions. [2019-09-07 22:49:30,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:49:30,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2019-09-07 22:49:30,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:30,892 INFO L225 Difference]: With dead ends: 8688 [2019-09-07 22:49:30,893 INFO L226 Difference]: Without dead ends: 5830 [2019-09-07 22:49:30,901 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 22:49:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5830 states. [2019-09-07 22:49:31,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5830 to 5770. [2019-09-07 22:49:31,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5770 states. [2019-09-07 22:49:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 9726 transitions. [2019-09-07 22:49:31,106 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 9726 transitions. Word has length 181 [2019-09-07 22:49:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:31,106 INFO L475 AbstractCegarLoop]: Abstraction has 5770 states and 9726 transitions. [2019-09-07 22:49:31,107 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:49:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 9726 transitions. [2019-09-07 22:49:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-09-07 22:49:31,112 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:31,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:31,113 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash 280061133, now seen corresponding path program 1 times [2019-09-07 22:49:31,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:31,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:31,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:31,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:31,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:49:31,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:49:31,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:49:31,309 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:49:31,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:49:31,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:49:31,310 INFO L87 Difference]: Start difference. First operand 5770 states and 9726 transitions. Second operand 6 states. [2019-09-07 22:49:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:36,177 INFO L93 Difference]: Finished difference Result 13779 states and 23272 transitions. [2019-09-07 22:49:36,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:49:36,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2019-09-07 22:49:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:36,214 INFO L225 Difference]: With dead ends: 13779 [2019-09-07 22:49:36,214 INFO L226 Difference]: Without dead ends: 8015 [2019-09-07 22:49:36,229 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 22:49:36,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2019-09-07 22:49:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 7976. [2019-09-07 22:49:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7976 states. [2019-09-07 22:49:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 11297 transitions. [2019-09-07 22:49:36,425 INFO L78 Accepts]: Start accepts. Automaton has 7976 states and 11297 transitions. Word has length 183 [2019-09-07 22:49:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:36,426 INFO L475 AbstractCegarLoop]: Abstraction has 7976 states and 11297 transitions. [2019-09-07 22:49:36,426 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:49:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 7976 states and 11297 transitions. [2019-09-07 22:49:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-09-07 22:49:36,431 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:36,431 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:49:36,431 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:36,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:36,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1158781923, now seen corresponding path program 1 times [2019-09-07 22:49:36,432 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:36,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:36,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:36,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:36,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-09-07 22:49:36,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:49:36,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:49:36,577 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:49:36,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:49:36,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:49:36,578 INFO L87 Difference]: Start difference. First operand 7976 states and 11297 transitions. Second operand 4 states. [2019-09-07 22:49:43,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:43,406 INFO L93 Difference]: Finished difference Result 23834 states and 34400 transitions. [2019-09-07 22:49:43,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:49:43,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2019-09-07 22:49:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:43,459 INFO L225 Difference]: With dead ends: 23834 [2019-09-07 22:49:43,459 INFO L226 Difference]: Without dead ends: 15864 [2019-09-07 22:49:43,480 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:49:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15864 states. [2019-09-07 22:49:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15864 to 15864. [2019-09-07 22:49:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15864 states. [2019-09-07 22:49:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15864 states to 15864 states and 21949 transitions. [2019-09-07 22:49:43,838 INFO L78 Accepts]: Start accepts. Automaton has 15864 states and 21949 transitions. Word has length 240 [2019-09-07 22:49:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:43,840 INFO L475 AbstractCegarLoop]: Abstraction has 15864 states and 21949 transitions. [2019-09-07 22:49:43,840 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:49:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 15864 states and 21949 transitions. [2019-09-07 22:49:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2019-09-07 22:49:43,858 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:43,859 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:49:43,859 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:43,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:43,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1013540221, now seen corresponding path program 1 times [2019-09-07 22:49:43,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:43,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:43,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:43,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:43,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 78 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:49:44,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:49:44,136 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) [2019-09-07 22:49:44,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:49:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:44,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:49:44,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:49:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-09-07 22:49:44,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:49:44,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-07 22:49:44,569 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:49:44,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:49:44,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:49:44,571 INFO L87 Difference]: Start difference. First operand 15864 states and 21949 transitions. Second operand 8 states. [2019-09-07 22:49:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:49:50,736 INFO L93 Difference]: Finished difference Result 37822 states and 54338 transitions. [2019-09-07 22:49:50,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 22:49:50,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 394 [2019-09-07 22:49:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:49:50,855 INFO L225 Difference]: With dead ends: 37822 [2019-09-07 22:49:50,856 INFO L226 Difference]: Without dead ends: 21964 [2019-09-07 22:49:50,904 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-07 22:49:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21964 states. [2019-09-07 22:49:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21964 to 21044. [2019-09-07 22:49:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21044 states. [2019-09-07 22:49:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21044 states to 21044 states and 28034 transitions. [2019-09-07 22:49:51,512 INFO L78 Accepts]: Start accepts. Automaton has 21044 states and 28034 transitions. Word has length 394 [2019-09-07 22:49:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:49:51,513 INFO L475 AbstractCegarLoop]: Abstraction has 21044 states and 28034 transitions. [2019-09-07 22:49:51,513 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:49:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 21044 states and 28034 transitions. [2019-09-07 22:49:51,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2019-09-07 22:49:51,540 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:49:51,541 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:49:51,541 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:49:51,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:49:51,542 INFO L82 PathProgramCache]: Analyzing trace with hash -627911998, now seen corresponding path program 1 times [2019-09-07 22:49:51,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:49:51,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:49:51,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:51,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:49:51,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:49:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:49:52,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:49:52,876 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 22:49:52,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:49:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:49:53,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:49:53,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:49:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 22:49:53,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:49:53,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:49:53,210 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:49:53,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:49:53,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:49:53,211 INFO L87 Difference]: Start difference. First operand 21044 states and 28034 transitions. Second operand 9 states. [2019-09-07 22:50:07,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:50:07,771 INFO L93 Difference]: Finished difference Result 48593 states and 68266 transitions. [2019-09-07 22:50:07,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:50:07,772 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 445 [2019-09-07 22:50:07,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:50:07,875 INFO L225 Difference]: With dead ends: 48593 [2019-09-07 22:50:07,876 INFO L226 Difference]: Without dead ends: 27555 [2019-09-07 22:50:07,939 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:50:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27555 states. [2019-09-07 22:50:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27555 to 25995. [2019-09-07 22:50:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25995 states. [2019-09-07 22:50:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25995 states to 25995 states and 34232 transitions. [2019-09-07 22:50:08,466 INFO L78 Accepts]: Start accepts. Automaton has 25995 states and 34232 transitions. Word has length 445 [2019-09-07 22:50:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:50:08,467 INFO L475 AbstractCegarLoop]: Abstraction has 25995 states and 34232 transitions. [2019-09-07 22:50:08,467 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:50:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 25995 states and 34232 transitions. [2019-09-07 22:50:08,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2019-09-07 22:50:08,507 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:50:08,508 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:08,508 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:50:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:50:08,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1738992560, now seen corresponding path program 1 times [2019-09-07 22:50:08,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:50:08,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:50:08,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:08,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:08,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 117 proven. 153 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-09-07 22:50:08,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:50:08,810 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:50:08,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:08,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:50:08,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:50:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-09-07 22:50:09,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:50:09,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2019-09-07 22:50:09,139 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 22:50:09,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 22:50:09,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 22:50:09,140 INFO L87 Difference]: Start difference. First operand 25995 states and 34232 transitions. Second operand 7 states. [2019-09-07 22:50:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:50:19,286 INFO L93 Difference]: Finished difference Result 84702 states and 134288 transitions. [2019-09-07 22:50:19,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 22:50:19,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 484 [2019-09-07 22:50:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:50:19,637 INFO L225 Difference]: With dead ends: 84702 [2019-09-07 22:50:19,637 INFO L226 Difference]: Without dead ends: 58713 [2019-09-07 22:50:19,715 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:50:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58713 states. [2019-09-07 22:50:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58713 to 57021. [2019-09-07 22:50:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57021 states. [2019-09-07 22:50:22,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57021 states to 57021 states and 76542 transitions. [2019-09-07 22:50:22,374 INFO L78 Accepts]: Start accepts. Automaton has 57021 states and 76542 transitions. Word has length 484 [2019-09-07 22:50:22,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:50:22,374 INFO L475 AbstractCegarLoop]: Abstraction has 57021 states and 76542 transitions. [2019-09-07 22:50:22,375 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 22:50:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 57021 states and 76542 transitions. [2019-09-07 22:50:22,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2019-09-07 22:50:22,407 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:50:22,408 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:22,408 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:50:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:50:22,409 INFO L82 PathProgramCache]: Analyzing trace with hash 51110324, now seen corresponding path program 1 times [2019-09-07 22:50:22,409 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:50:22,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:50:22,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:22,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:22,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:50:22,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:50:22,770 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 22:50:22,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:22,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:50:22,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:50:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:50:23,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:50:23,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:50:23,372 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:50:23,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:50:23,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:50:23,373 INFO L87 Difference]: Start difference. First operand 57021 states and 76542 transitions. Second operand 9 states. [2019-09-07 22:50:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:50:34,897 INFO L93 Difference]: Finished difference Result 141974 states and 220491 transitions. [2019-09-07 22:50:34,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:50:34,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 491 [2019-09-07 22:50:34,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:50:35,453 INFO L225 Difference]: With dead ends: 141974 [2019-09-07 22:50:35,453 INFO L226 Difference]: Without dead ends: 84959 [2019-09-07 22:50:35,601 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:50:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84959 states. [2019-09-07 22:50:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84959 to 81599. [2019-09-07 22:50:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81599 states. [2019-09-07 22:50:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81599 states to 81599 states and 124937 transitions. [2019-09-07 22:50:39,976 INFO L78 Accepts]: Start accepts. Automaton has 81599 states and 124937 transitions. Word has length 491 [2019-09-07 22:50:39,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:50:39,976 INFO L475 AbstractCegarLoop]: Abstraction has 81599 states and 124937 transitions. [2019-09-07 22:50:39,977 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:50:39,977 INFO L276 IsEmpty]: Start isEmpty. Operand 81599 states and 124937 transitions. [2019-09-07 22:50:40,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2019-09-07 22:50:40,015 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:50:40,016 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:40,017 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:50:40,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:50:40,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1172392966, now seen corresponding path program 1 times [2019-09-07 22:50:40,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:50:40,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:50:40,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:40,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:50:40,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:50:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 192 proven. 73 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-09-07 22:50:40,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:50:40,818 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 22:50:40,831 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 22:50:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:50:40,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:50:40,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:50:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-09-07 22:50:41,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:50:41,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:50:41,126 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:50:41,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:50:41,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:50:41,126 INFO L87 Difference]: Start difference. First operand 81599 states and 124937 transitions. Second operand 9 states. [2019-09-07 22:50:57,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:50:57,459 INFO L93 Difference]: Finished difference Result 198151 states and 382636 transitions. [2019-09-07 22:50:57,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 22:50:57,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 580 [2019-09-07 22:50:57,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:50:58,335 INFO L225 Difference]: With dead ends: 198151 [2019-09-07 22:50:58,335 INFO L226 Difference]: Without dead ends: 115747 [2019-09-07 22:50:58,548 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:50:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115747 states. [2019-09-07 22:51:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115747 to 113908. [2019-09-07 22:51:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113908 states. [2019-09-07 22:51:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113908 states to 113908 states and 218884 transitions. [2019-09-07 22:51:02,799 INFO L78 Accepts]: Start accepts. Automaton has 113908 states and 218884 transitions. Word has length 580 [2019-09-07 22:51:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:51:02,800 INFO L475 AbstractCegarLoop]: Abstraction has 113908 states and 218884 transitions. [2019-09-07 22:51:02,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:51:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 113908 states and 218884 transitions. [2019-09-07 22:51:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2019-09-07 22:51:02,824 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:51:02,825 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:02,825 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:51:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:51:02,826 INFO L82 PathProgramCache]: Analyzing trace with hash -48044292, now seen corresponding path program 1 times [2019-09-07 22:51:02,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:51:02,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:51:02,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:02,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:02,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:51:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 148 proven. 46 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 22:51:04,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:51:04,613 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 22:51:04,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:51:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:51:04,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:51:04,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:51:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-09-07 22:51:04,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:51:04,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 22:51:04,907 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:51:04,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:51:04,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:51:04,907 INFO L87 Difference]: Start difference. First operand 113908 states and 218884 transitions. Second operand 8 states. [2019-09-07 22:51:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:51:20,785 INFO L93 Difference]: Finished difference Result 229668 states and 511793 transitions. [2019-09-07 22:51:20,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 22:51:20,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 600 [2019-09-07 22:51:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:51:20,798 INFO L225 Difference]: With dead ends: 229668 [2019-09-07 22:51:20,799 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 22:51:21,654 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 610 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:51:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 22:51:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 22:51:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 22:51:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 22:51:21,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 600 [2019-09-07 22:51:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:51:21,660 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 22:51:21,660 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:51:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 22:51:21,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 22:51:21,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 22:51:24,428 WARN L188 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 26 [2019-09-07 22:55:38,011 WARN L188 SmtUtils]: Spent 4.17 m on a formula simplification. DAG size of input: 5535 DAG size of output: 4940 [2019-09-07 22:55:39,020 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-09-07 22:59:59,152 WARN L188 SmtUtils]: Spent 4.30 m on a formula simplification. DAG size of input: 5535 DAG size of output: 4940 [2019-09-07 23:00:00,784 WARN L188 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 405 DAG size of output: 41 [2019-09-07 23:00:02,446 WARN L188 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 405 DAG size of output: 41 [2019-09-07 23:00:03,983 WARN L188 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 405 DAG size of output: 41