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/Problem19_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:14:10,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:14:10,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:14:10,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:14:10,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:14:10,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:14:10,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:14:10,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:14:10,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:14:10,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:14:10,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:14:10,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:14:10,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:14:10,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:14:10,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:14:10,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:14:10,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:14:10,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 23:14:10,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 23:14:10,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 23:14:10,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 23:14:10,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 23:14:10,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 23:14:10,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 23:14:10,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 23:14:10,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:14:10,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:14:10,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:14:10,127 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 23:14:10,152 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:14:10,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:14:10,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:14:10,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:14:10,154 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:14:10,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:14:10,154 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:14:10,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:14:10,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:14:10,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:14:10,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:14:10,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:14:10,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:14:10,156 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:14:10,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:14:10,156 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:14:10,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:14:10,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:14:10,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:14:10,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:14:10,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:14:10,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:14:10,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:14:10,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:14:10,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:14:10,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:14:10,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:14:10,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:14:10,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:14:10,186 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:14:10,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:14:10,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:14:10,209 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:14:10,210 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:14:10,210 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label35.c [2019-09-07 23:14:10,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ea25e68/5f7ba28e6d8c49d5996c754d943009ce/FLAG24edd761e [2019-09-07 23:14:11,341 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:14:11,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label35.c [2019-09-07 23:14:11,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ea25e68/5f7ba28e6d8c49d5996c754d943009ce/FLAG24edd761e [2019-09-07 23:14:11,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ea25e68/5f7ba28e6d8c49d5996c754d943009ce [2019-09-07 23:14:11,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:14:11,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:14:11,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:14:11,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:14:11,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:14:11,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:14:11" (1/1) ... [2019-09-07 23:14:11,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e9b9e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:11, skipping insertion in model container [2019-09-07 23:14:11,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:14:11" (1/1) ... [2019-09-07 23:14:11,617 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:14:11,888 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:14:13,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:14:13,994 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:14:15,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:14:15,159 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:14:15,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15 WrapperNode [2019-09-07 23:14:15,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:14:15,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:14:15,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:14:15,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:14:15,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15" (1/1) ... [2019-09-07 23:14:15,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15" (1/1) ... [2019-09-07 23:14:15,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15" (1/1) ... [2019-09-07 23:14:15,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15" (1/1) ... [2019-09-07 23:14:15,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15" (1/1) ... [2019-09-07 23:14:15,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15" (1/1) ... [2019-09-07 23:14:15,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15" (1/1) ... [2019-09-07 23:14:15,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:14:15,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:14:15,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:14:15,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:14:15,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15" (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 23:14:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:14:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:14:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:14:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:14:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:14:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:14:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:14:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:14:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:14:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:14:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:14:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:14:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:14:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:14:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:14:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:14:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:14:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:14:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:14:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:14:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:14:26,772 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:14:26,772 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:14:26,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:14:26 BoogieIcfgContainer [2019-09-07 23:14:26,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:14:26,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:14:26,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:14:26,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:14:26,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:14:11" (1/3) ... [2019-09-07 23:14:26,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f307e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:14:26, skipping insertion in model container [2019-09-07 23:14:26,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:14:15" (2/3) ... [2019-09-07 23:14:26,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f307e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:14:26, skipping insertion in model container [2019-09-07 23:14:26,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:14:26" (3/3) ... [2019-09-07 23:14:26,783 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label35.c [2019-09-07 23:14:26,794 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:14:26,805 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:14:26,824 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:14:26,880 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:14:26,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:14:26,881 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:14:26,881 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:14:26,881 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:14:26,881 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:14:26,881 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:14:26,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:14:26,882 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:14:26,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:14:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-07 23:14:26,949 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:14:26,951 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] [2019-09-07 23:14:26,954 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:14:26,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:14:26,960 INFO L82 PathProgramCache]: Analyzing trace with hash 886743964, now seen corresponding path program 1 times [2019-09-07 23:14:26,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:14:26,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:14:27,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:27,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:14:27,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:27,331 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 23:14:27,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:14:27,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:14:27,339 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:14:27,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:14:27,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:14:27,359 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-07 23:14:45,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:14:45,199 INFO L93 Difference]: Finished difference Result 6509 states and 12379 transitions. [2019-09-07 23:14:45,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:14:45,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2019-09-07 23:14:45,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:14:45,246 INFO L225 Difference]: With dead ends: 6509 [2019-09-07 23:14:45,246 INFO L226 Difference]: Without dead ends: 4650 [2019-09-07 23:14:45,260 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 23:14:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4650 states. [2019-09-07 23:14:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4650 to 4614. [2019-09-07 23:14:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4614 states. [2019-09-07 23:14:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 7534 transitions. [2019-09-07 23:14:45,488 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 7534 transitions. Word has length 45 [2019-09-07 23:14:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:14:45,489 INFO L475 AbstractCegarLoop]: Abstraction has 4614 states and 7534 transitions. [2019-09-07 23:14:45,489 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:14:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 7534 transitions. [2019-09-07 23:14:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-07 23:14:45,495 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:14:45,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:14:45,496 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:14:45,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:14:45,497 INFO L82 PathProgramCache]: Analyzing trace with hash -343905360, now seen corresponding path program 1 times [2019-09-07 23:14:45,497 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:14:45,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:14:45,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:45,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:14:45,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:14:45,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:14:45,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:14:45,801 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:14:45,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:14:45,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:14:45,802 INFO L87 Difference]: Start difference. First operand 4614 states and 7534 transitions. Second operand 6 states. [2019-09-07 23:15:00,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:15:00,136 INFO L93 Difference]: Finished difference Result 13642 states and 22604 transitions. [2019-09-07 23:15:00,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:15:00,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2019-09-07 23:15:00,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:00,194 INFO L225 Difference]: With dead ends: 13642 [2019-09-07 23:15:00,194 INFO L226 Difference]: Without dead ends: 9034 [2019-09-07 23:15:00,207 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 23:15:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9034 states. [2019-09-07 23:15:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9034 to 8968. [2019-09-07 23:15:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8968 states. [2019-09-07 23:15:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 14334 transitions. [2019-09-07 23:15:00,494 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 14334 transitions. Word has length 116 [2019-09-07 23:15:00,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:00,495 INFO L475 AbstractCegarLoop]: Abstraction has 8968 states and 14334 transitions. [2019-09-07 23:15:00,495 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:15:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 14334 transitions. [2019-09-07 23:15:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-07 23:15:00,498 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:00,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:00,499 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:00,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:00,499 INFO L82 PathProgramCache]: Analyzing trace with hash 558227378, now seen corresponding path program 1 times [2019-09-07 23:15:00,499 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:00,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:00,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:00,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:00,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:15:00,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:15:00,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:15:00,694 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:15:00,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:15:00,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:15:00,695 INFO L87 Difference]: Start difference. First operand 8968 states and 14334 transitions. Second operand 6 states. [2019-09-07 23:15:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:15:15,891 INFO L93 Difference]: Finished difference Result 27311 states and 44701 transitions. [2019-09-07 23:15:15,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:15:15,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-09-07 23:15:15,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:15,971 INFO L225 Difference]: With dead ends: 27311 [2019-09-07 23:15:15,971 INFO L226 Difference]: Without dead ends: 18349 [2019-09-07 23:15:15,996 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 23:15:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2019-09-07 23:15:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18120. [2019-09-07 23:15:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18120 states. [2019-09-07 23:15:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18120 states to 18120 states and 28424 transitions. [2019-09-07 23:15:16,401 INFO L78 Accepts]: Start accepts. Automaton has 18120 states and 28424 transitions. Word has length 126 [2019-09-07 23:15:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:16,404 INFO L475 AbstractCegarLoop]: Abstraction has 18120 states and 28424 transitions. [2019-09-07 23:15:16,404 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:15:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 18120 states and 28424 transitions. [2019-09-07 23:15:16,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-09-07 23:15:16,415 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:16,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:16,415 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:16,416 INFO L82 PathProgramCache]: Analyzing trace with hash 510124946, now seen corresponding path program 1 times [2019-09-07 23:15:16,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:16,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:16,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:16,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:16,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:15:16,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:15:16,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:15:16,673 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:15:16,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:15:16,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:15:16,675 INFO L87 Difference]: Start difference. First operand 18120 states and 28424 transitions. Second operand 6 states. [2019-09-07 23:15:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:15:30,320 INFO L93 Difference]: Finished difference Result 45531 states and 72712 transitions. [2019-09-07 23:15:30,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:15:30,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2019-09-07 23:15:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:30,423 INFO L225 Difference]: With dead ends: 45531 [2019-09-07 23:15:30,423 INFO L226 Difference]: Without dead ends: 27417 [2019-09-07 23:15:30,469 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 23:15:30,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27417 states. [2019-09-07 23:15:30,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27417 to 27276. [2019-09-07 23:15:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27276 states. [2019-09-07 23:15:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27276 states to 27276 states and 41289 transitions. [2019-09-07 23:15:31,046 INFO L78 Accepts]: Start accepts. Automaton has 27276 states and 41289 transitions. Word has length 159 [2019-09-07 23:15:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:31,048 INFO L475 AbstractCegarLoop]: Abstraction has 27276 states and 41289 transitions. [2019-09-07 23:15:31,048 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:15:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 27276 states and 41289 transitions. [2019-09-07 23:15:31,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-09-07 23:15:31,051 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:31,051 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, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:15:31,052 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:31,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:31,052 INFO L82 PathProgramCache]: Analyzing trace with hash 933602926, now seen corresponding path program 1 times [2019-09-07 23:15:31,052 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:31,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:31,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:31,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:31,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 76 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:15:31,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:15:31,201 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 23:15:31,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:31,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:15:31,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:15:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-09-07 23:15:31,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:15:31,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 23:15:31,698 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:15:31,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:15:31,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:15:31,699 INFO L87 Difference]: Start difference. First operand 27276 states and 41289 transitions. Second operand 9 states. [2019-09-07 23:16:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:16:04,390 INFO L93 Difference]: Finished difference Result 105124 states and 178077 transitions. [2019-09-07 23:16:04,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 23:16:04,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2019-09-07 23:16:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:16:04,770 INFO L225 Difference]: With dead ends: 105124 [2019-09-07 23:16:04,771 INFO L226 Difference]: Without dead ends: 77854 [2019-09-07 23:16:04,882 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=1177, Unknown=0, NotChecked=0, Total=1482 [2019-09-07 23:16:04,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77854 states. [2019-09-07 23:16:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77854 to 76926. [2019-09-07 23:16:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76926 states. [2019-09-07 23:16:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76926 states to 76926 states and 114275 transitions. [2019-09-07 23:16:09,431 INFO L78 Accepts]: Start accepts. Automaton has 76926 states and 114275 transitions. Word has length 194 [2019-09-07 23:16:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:16:09,431 INFO L475 AbstractCegarLoop]: Abstraction has 76926 states and 114275 transitions. [2019-09-07 23:16:09,431 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:16:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 76926 states and 114275 transitions. [2019-09-07 23:16:09,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-09-07 23:16:09,436 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:16:09,436 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, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:16:09,437 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:16:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:16:09,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1465374078, now seen corresponding path program 1 times [2019-09-07 23:16:09,437 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:16:09,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:16:09,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:16:09,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:16:09,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:16:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:16:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 76 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:16:09,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:16:09,559 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 23:16:09,586 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 23:16:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:16:09,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:16:09,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:16:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-07 23:16:09,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:16:09,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2019-09-07 23:16:09,726 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:16:09,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:16:09,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:16:09,728 INFO L87 Difference]: Start difference. First operand 76926 states and 114275 transitions. Second operand 6 states. [2019-09-07 23:16:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:16:27,033 INFO L93 Difference]: Finished difference Result 223473 states and 348346 transitions. [2019-09-07 23:16:27,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 23:16:27,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2019-09-07 23:16:27,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:16:27,590 INFO L225 Difference]: With dead ends: 223473 [2019-09-07 23:16:27,590 INFO L226 Difference]: Without dead ends: 146553 [2019-09-07 23:16:27,739 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-09-07 23:16:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146553 states. [2019-09-07 23:16:33,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146553 to 132090. [2019-09-07 23:16:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132090 states. [2019-09-07 23:16:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132090 states to 132090 states and 185513 transitions. [2019-09-07 23:16:33,862 INFO L78 Accepts]: Start accepts. Automaton has 132090 states and 185513 transitions. Word has length 217 [2019-09-07 23:16:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:16:33,864 INFO L475 AbstractCegarLoop]: Abstraction has 132090 states and 185513 transitions. [2019-09-07 23:16:33,864 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:16:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 132090 states and 185513 transitions. [2019-09-07 23:16:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2019-09-07 23:16:33,901 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:16:33,901 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:33,902 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:16:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:16:33,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1029999296, now seen corresponding path program 1 times [2019-09-07 23:16:33,903 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:16:33,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:16:33,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:16:33,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:16:33,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:16:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:16:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 187 proven. 71 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-09-07 23:16:35,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:16:35,429 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 23:16:35,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:16:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:16:35,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:16:35,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:16:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-09-07 23:16:36,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:16:36,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:16:36,512 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:16:36,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:16:36,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:16:36,513 INFO L87 Difference]: Start difference. First operand 132090 states and 185513 transitions. Second operand 9 states. [2019-09-07 23:17:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:17:09,887 INFO L93 Difference]: Finished difference Result 386706 states and 613353 transitions. [2019-09-07 23:17:09,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 23:17:09,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 844 [2019-09-07 23:17:09,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:17:10,930 INFO L225 Difference]: With dead ends: 386706 [2019-09-07 23:17:10,930 INFO L226 Difference]: Without dead ends: 254622 [2019-09-07 23:17:11,142 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:17:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254622 states. [2019-09-07 23:17:21,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254622 to 249512. [2019-09-07 23:17:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249512 states. [2019-09-07 23:17:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249512 states to 249512 states and 369901 transitions. [2019-09-07 23:17:21,855 INFO L78 Accepts]: Start accepts. Automaton has 249512 states and 369901 transitions. Word has length 844 [2019-09-07 23:17:21,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:17:21,856 INFO L475 AbstractCegarLoop]: Abstraction has 249512 states and 369901 transitions. [2019-09-07 23:17:21,856 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:17:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 249512 states and 369901 transitions. [2019-09-07 23:17:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2019-09-07 23:17:21,897 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:17:21,898 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, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:17:21,898 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:17:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:17:21,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1092415623, now seen corresponding path program 1 times [2019-09-07 23:17:21,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:17:21,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:17:21,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:21,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:21,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 155 proven. 21 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2019-09-07 23:17:24,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:17:24,422 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 23:17:24,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:24,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:17:24,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:17:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2019-09-07 23:17:28,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:17:28,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-09-07 23:17:28,930 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 23:17:28,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 23:17:28,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-09-07 23:17:28,931 INFO L87 Difference]: Start difference. First operand 249512 states and 369901 transitions. Second operand 10 states. [2019-09-07 23:18:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:18:22,108 INFO L93 Difference]: Finished difference Result 867760 states and 1434934 transitions. [2019-09-07 23:18:22,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-07 23:18:22,109 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 925 [2019-09-07 23:18:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:18:24,653 INFO L225 Difference]: With dead ends: 867760 [2019-09-07 23:18:24,654 INFO L226 Difference]: Without dead ends: 618254 [2019-09-07 23:18:32,716 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 945 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2019-09-07 23:18:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618254 states. [2019-09-07 23:18:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618254 to 615803. [2019-09-07 23:18:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615803 states. [2019-09-07 23:18:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615803 states to 615803 states and 902690 transitions. [2019-09-07 23:18:59,645 INFO L78 Accepts]: Start accepts. Automaton has 615803 states and 902690 transitions. Word has length 925 [2019-09-07 23:18:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:18:59,646 INFO L475 AbstractCegarLoop]: Abstraction has 615803 states and 902690 transitions. [2019-09-07 23:18:59,646 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 23:18:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 615803 states and 902690 transitions. [2019-09-07 23:18:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2019-09-07 23:18:59,730 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:18:59,731 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:59,731 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:18:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:18:59,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1980003317, now seen corresponding path program 1 times [2019-09-07 23:18:59,732 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:18:59,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:18:59,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:59,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:18:59,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:19:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1865 backedges. 740 proven. 127 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2019-09-07 23:19:09,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:19:09,572 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:19:09,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:19:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:19:09,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:19:09,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:19:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1865 backedges. 1197 proven. 2 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2019-09-07 23:19:10,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:19:10,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:19:10,838 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:19:10,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:19:10,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:19:10,839 INFO L87 Difference]: Start difference. First operand 615803 states and 902690 transitions. Second operand 9 states. [2019-09-07 23:20:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:20:09,043 INFO L93 Difference]: Finished difference Result 1340877 states and 2286953 transitions. [2019-09-07 23:20:09,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 23:20:09,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1414 [2019-09-07 23:20:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:20:14,698 INFO L225 Difference]: With dead ends: 1340877 [2019-09-07 23:20:14,699 INFO L226 Difference]: Without dead ends: 704866 [2019-09-07 23:20:16,454 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1445 GetRequests, 1425 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-09-07 23:20:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704866 states. [2019-09-07 23:20:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704866 to 691306. [2019-09-07 23:20:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691306 states. [2019-09-07 23:21:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691306 states to 691306 states and 1024967 transitions. [2019-09-07 23:21:12,678 INFO L78 Accepts]: Start accepts. Automaton has 691306 states and 1024967 transitions. Word has length 1414 [2019-09-07 23:21:12,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:21:12,680 INFO L475 AbstractCegarLoop]: Abstraction has 691306 states and 1024967 transitions. [2019-09-07 23:21:12,680 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:21:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 691306 states and 1024967 transitions. [2019-09-07 23:21:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1197 [2019-09-07 23:21:12,732 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:21:12,733 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:21:12,733 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:21:12,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:21:12,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1566037705, now seen corresponding path program 1 times [2019-09-07 23:21:12,734 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:21:12,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:21:12,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:12,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:21:12,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 534 proven. 2 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2019-09-07 23:21:15,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:21:15,986 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 23:21:15,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:21:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:16,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:21:16,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:21:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 534 proven. 2 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2019-09-07 23:21:16,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:21:16,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-09-07 23:21:16,977 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 23:21:16,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 23:21:16,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-07 23:21:16,978 INFO L87 Difference]: Start difference. First operand 691306 states and 1024967 transitions. Second operand 10 states.