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_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:03:10,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:03:10,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:03:10,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:03:10,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:03:10,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:03:10,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:03:10,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:03:10,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:03:10,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:03:10,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:03:10,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:03:10,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:03:10,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:03:10,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:03:10,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:03:10,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:03:10,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:03:10,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:03:10,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:03:10,107 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 23:03:10,130 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:03:10,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:03:10,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:03:10,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:03:10,137 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:03:10,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:03:10,138 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:03:10,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:03:10,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:03:10,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:03:10,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:03:10,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:03:10,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:03:10,140 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:03:10,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:03:10,140 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:03:10,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:03:10,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:03:10,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:03:10,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:03:10,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:03:10,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:03:10,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:03:10,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:03:10,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:03:10,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:03:10,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:03:10,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:03:10,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:03:10,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:03:10,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:03:10,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:03:10,215 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:03:10,215 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:03:10,216 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label18.c [2019-09-07 23:03:10,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6dd7ac7/aad97e48bff549eb82ccc1f4f95b090a/FLAGb5aaa998b [2019-09-07 23:03:11,148 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:03:11,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label18.c [2019-09-07 23:03:11,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6dd7ac7/aad97e48bff549eb82ccc1f4f95b090a/FLAGb5aaa998b [2019-09-07 23:03:11,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6dd7ac7/aad97e48bff549eb82ccc1f4f95b090a [2019-09-07 23:03:11,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:03:11,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:03:11,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:03:11,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:03:11,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:03:11,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:03:11" (1/1) ... [2019-09-07 23:03:11,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df7a19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:11, skipping insertion in model container [2019-09-07 23:03:11,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:03:11" (1/1) ... [2019-09-07 23:03:11,585 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:03:11,778 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:03:14,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:03:14,093 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:03:15,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:03:15,171 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:03:15,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15 WrapperNode [2019-09-07 23:03:15,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:03:15,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:03:15,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:03:15,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:03:15,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15" (1/1) ... [2019-09-07 23:03:15,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15" (1/1) ... [2019-09-07 23:03:15,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15" (1/1) ... [2019-09-07 23:03:15,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15" (1/1) ... [2019-09-07 23:03:15,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15" (1/1) ... [2019-09-07 23:03:15,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15" (1/1) ... [2019-09-07 23:03:15,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15" (1/1) ... [2019-09-07 23:03:15,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:03:15,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:03:15,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:03:15,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:03:15,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15" (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 23:03:15,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:03:15,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:03:15,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:03:15,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:03:15,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:03:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:03:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:03:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:03:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:03:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:03:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:03:15,773 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:03:15,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:03:15,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:03:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:03:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:03:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:03:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:03:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:03:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:03:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:03:26,163 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:03:26,164 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:03:26,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:03:26 BoogieIcfgContainer [2019-09-07 23:03:26,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:03:26,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:03:26,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:03:26,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:03:26,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:03:11" (1/3) ... [2019-09-07 23:03:26,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d20ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:03:26, skipping insertion in model container [2019-09-07 23:03:26,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:03:15" (2/3) ... [2019-09-07 23:03:26,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d20ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:03:26, skipping insertion in model container [2019-09-07 23:03:26,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:03:26" (3/3) ... [2019-09-07 23:03:26,181 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label18.c [2019-09-07 23:03:26,192 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:03:26,202 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:03:26,218 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:03:26,277 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:03:26,277 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:03:26,278 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:03:26,278 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:03:26,278 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:03:26,278 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:03:26,278 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:03:26,278 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:03:26,278 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:03:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:03:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-07 23:03:26,330 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:03:26,331 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] [2019-09-07 23:03:26,333 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:03:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:03:26,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1753504698, now seen corresponding path program 1 times [2019-09-07 23:03:26,340 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:03:26,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:03:26,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:26,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:03:26,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:03:26,605 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 23:03:26,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:03:26,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:03:26,612 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:03:26,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:03:26,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:03:26,629 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:03:36,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:03:36,878 INFO L93 Difference]: Finished difference Result 4992 states and 9410 transitions. [2019-09-07 23:03:36,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:03:36,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-09-07 23:03:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:03:36,919 INFO L225 Difference]: With dead ends: 4992 [2019-09-07 23:03:36,919 INFO L226 Difference]: Without dead ends: 3153 [2019-09-07 23:03:36,930 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 23:03:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2019-09-07 23:03:37,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 3151. [2019-09-07 23:03:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3151 states. [2019-09-07 23:03:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 5670 transitions. [2019-09-07 23:03:37,104 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 5670 transitions. Word has length 36 [2019-09-07 23:03:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:03:37,104 INFO L475 AbstractCegarLoop]: Abstraction has 3151 states and 5670 transitions. [2019-09-07 23:03:37,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:03:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 5670 transitions. [2019-09-07 23:03:37,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-07 23:03:37,110 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:03:37,110 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:03:37,111 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:03:37,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:03:37,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1343356619, now seen corresponding path program 1 times [2019-09-07 23:03:37,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:03:37,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:03:37,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:37,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:03:37,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:03:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:03:37,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:03:37,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:03:37,359 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:03:37,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:03:37,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:03:37,361 INFO L87 Difference]: Start difference. First operand 3151 states and 5670 transitions. Second operand 5 states. [2019-09-07 23:03:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:03:54,040 INFO L93 Difference]: Finished difference Result 9353 states and 16969 transitions. [2019-09-07 23:03:54,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:03:54,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2019-09-07 23:03:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:03:54,083 INFO L225 Difference]: With dead ends: 9353 [2019-09-07 23:03:54,083 INFO L226 Difference]: Without dead ends: 6208 [2019-09-07 23:03:54,093 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 23:03:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2019-09-07 23:03:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 6103. [2019-09-07 23:03:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6103 states. [2019-09-07 23:03:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6103 states to 6103 states and 9451 transitions. [2019-09-07 23:03:54,304 INFO L78 Accepts]: Start accepts. Automaton has 6103 states and 9451 transitions. Word has length 109 [2019-09-07 23:03:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:03:54,307 INFO L475 AbstractCegarLoop]: Abstraction has 6103 states and 9451 transitions. [2019-09-07 23:03:54,307 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:03:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6103 states and 9451 transitions. [2019-09-07 23:03:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-07 23:03:54,318 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:03:54,318 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:03:54,318 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:03:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:03:54,320 INFO L82 PathProgramCache]: Analyzing trace with hash -824764123, now seen corresponding path program 1 times [2019-09-07 23:03:54,320 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:03:54,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:03:54,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:54,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:03:54,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:03:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:03:54,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:03:54,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:03:54,515 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:03:54,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:03:54,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:03:54,516 INFO L87 Difference]: Start difference. First operand 6103 states and 9451 transitions. Second operand 6 states. [2019-09-07 23:04:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:04:10,141 INFO L93 Difference]: Finished difference Result 18536 states and 29109 transitions. [2019-09-07 23:04:10,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:04:10,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2019-09-07 23:04:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:04:10,196 INFO L225 Difference]: With dead ends: 18536 [2019-09-07 23:04:10,196 INFO L226 Difference]: Without dead ends: 12439 [2019-09-07 23:04:10,217 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 23:04:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2019-09-07 23:04:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 12213. [2019-09-07 23:04:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12213 states. [2019-09-07 23:04:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12213 states to 12213 states and 18475 transitions. [2019-09-07 23:04:10,527 INFO L78 Accepts]: Start accepts. Automaton has 12213 states and 18475 transitions. Word has length 117 [2019-09-07 23:04:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:04:10,527 INFO L475 AbstractCegarLoop]: Abstraction has 12213 states and 18475 transitions. [2019-09-07 23:04:10,528 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:04:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 12213 states and 18475 transitions. [2019-09-07 23:04:10,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-07 23:04:10,529 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:04:10,529 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:04:10,530 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:04:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:04:10,530 INFO L82 PathProgramCache]: Analyzing trace with hash -995758193, now seen corresponding path program 1 times [2019-09-07 23:04:10,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:04:10,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:04:10,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:10,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:04:10,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:04:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:04:10,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:04:10,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:04:10,668 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:04:10,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:04:10,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:04:10,669 INFO L87 Difference]: Start difference. First operand 12213 states and 18475 transitions. Second operand 5 states. [2019-09-07 23:04:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:04:26,982 INFO L93 Difference]: Finished difference Result 37748 states and 58167 transitions. [2019-09-07 23:04:26,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:04:26,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2019-09-07 23:04:26,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:04:27,069 INFO L225 Difference]: With dead ends: 37748 [2019-09-07 23:04:27,069 INFO L226 Difference]: Without dead ends: 25541 [2019-09-07 23:04:27,102 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 23:04:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25541 states. [2019-09-07 23:04:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25541 to 23291. [2019-09-07 23:04:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23291 states. [2019-09-07 23:04:27,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23291 states to 23291 states and 31891 transitions. [2019-09-07 23:04:27,727 INFO L78 Accepts]: Start accepts. Automaton has 23291 states and 31891 transitions. Word has length 137 [2019-09-07 23:04:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:04:27,729 INFO L475 AbstractCegarLoop]: Abstraction has 23291 states and 31891 transitions. [2019-09-07 23:04:27,729 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:04:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 23291 states and 31891 transitions. [2019-09-07 23:04:27,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-09-07 23:04:27,734 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:04:27,735 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:04:27,735 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:04:27,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:04:27,735 INFO L82 PathProgramCache]: Analyzing trace with hash -838329078, now seen corresponding path program 1 times [2019-09-07 23:04:27,736 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:04:27,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:04:27,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:27,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:04:27,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:04:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:04:27,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:04:27,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:04:27,994 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:04:27,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:04:27,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:04:27,995 INFO L87 Difference]: Start difference. First operand 23291 states and 31891 transitions. Second operand 6 states. [2019-09-07 23:04:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:04:42,430 INFO L93 Difference]: Finished difference Result 60100 states and 84220 transitions. [2019-09-07 23:04:42,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:04:42,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 200 [2019-09-07 23:04:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:04:42,529 INFO L225 Difference]: With dead ends: 60100 [2019-09-07 23:04:42,529 INFO L226 Difference]: Without dead ends: 36815 [2019-09-07 23:04:42,586 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 23:04:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36815 states. [2019-09-07 23:04:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36815 to 35947. [2019-09-07 23:04:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35947 states. [2019-09-07 23:04:43,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35947 states to 35947 states and 47480 transitions. [2019-09-07 23:04:43,409 INFO L78 Accepts]: Start accepts. Automaton has 35947 states and 47480 transitions. Word has length 200 [2019-09-07 23:04:43,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:04:43,410 INFO L475 AbstractCegarLoop]: Abstraction has 35947 states and 47480 transitions. [2019-09-07 23:04:43,410 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:04:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 35947 states and 47480 transitions. [2019-09-07 23:04:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2019-09-07 23:04:43,428 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:04:43,431 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:04:43,431 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:04:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:04:43,432 INFO L82 PathProgramCache]: Analyzing trace with hash -757244572, now seen corresponding path program 1 times [2019-09-07 23:04:43,432 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:04:43,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:04:43,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:43,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:04:43,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:04:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:04:44,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:04:44,371 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 23:04:44,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:04:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:04:44,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:04:44,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:04:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 23:04:45,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:04:45,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:04:45,290 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:04:45,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:04:45,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:04:45,291 INFO L87 Difference]: Start difference. First operand 35947 states and 47480 transitions. Second operand 9 states. [2019-09-07 23:05:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:05:15,785 INFO L93 Difference]: Finished difference Result 166464 states and 256208 transitions. [2019-09-07 23:05:15,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 23:05:15,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 707 [2019-09-07 23:05:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:05:16,357 INFO L225 Difference]: With dead ends: 166464 [2019-09-07 23:05:16,357 INFO L226 Difference]: Without dead ends: 130523 [2019-09-07 23:05:16,562 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-09-07 23:05:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130523 states. [2019-09-07 23:05:21,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130523 to 124369. [2019-09-07 23:05:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124369 states. [2019-09-07 23:05:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124369 states to 124369 states and 172269 transitions. [2019-09-07 23:05:22,069 INFO L78 Accepts]: Start accepts. Automaton has 124369 states and 172269 transitions. Word has length 707 [2019-09-07 23:05:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:05:22,070 INFO L475 AbstractCegarLoop]: Abstraction has 124369 states and 172269 transitions. [2019-09-07 23:05:22,070 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:05:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 124369 states and 172269 transitions. [2019-09-07 23:05:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2019-09-07 23:05:22,104 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:05:22,105 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:22,105 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:05:22,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:05:22,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1864757387, now seen corresponding path program 1 times [2019-09-07 23:05:22,106 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:05:22,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:05:22,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:22,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:05:22,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:05:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2019-09-07 23:05:25,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:05:25,511 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:05:25,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:05:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:05:25,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:05:25,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:05:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2019-09-07 23:05:26,193 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:05:26,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:05:26,195 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:05:26,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:05:26,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:05:26,196 INFO L87 Difference]: Start difference. First operand 124369 states and 172269 transitions. Second operand 9 states. [2019-09-07 23:06:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:06:00,303 INFO L93 Difference]: Finished difference Result 312211 states and 503874 transitions. [2019-09-07 23:06:00,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 23:06:00,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 911 [2019-09-07 23:06:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:06:01,011 INFO L225 Difference]: With dead ends: 312211 [2019-09-07 23:06:01,011 INFO L226 Difference]: Without dead ends: 187848 [2019-09-07 23:06:01,244 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 918 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:06:01,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187848 states. [2019-09-07 23:06:06,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187848 to 184919. [2019-09-07 23:06:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184919 states. [2019-09-07 23:06:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184919 states to 184919 states and 282294 transitions. [2019-09-07 23:06:07,508 INFO L78 Accepts]: Start accepts. Automaton has 184919 states and 282294 transitions. Word has length 911 [2019-09-07 23:06:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:06:07,512 INFO L475 AbstractCegarLoop]: Abstraction has 184919 states and 282294 transitions. [2019-09-07 23:06:07,512 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:06:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 184919 states and 282294 transitions. [2019-09-07 23:06:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2019-09-07 23:06:07,534 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:06:07,536 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-07 23:06:07,536 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:06:07,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:06:07,537 INFO L82 PathProgramCache]: Analyzing trace with hash -351365942, now seen corresponding path program 1 times [2019-09-07 23:06:07,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:06:07,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:06:07,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:07,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:06:07,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:06:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-07 23:06:09,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:06:09,298 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 23:06:09,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:06:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:06:09,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:06:09,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:06:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-07 23:06:10,466 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:06:10,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:06:10,468 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:06:10,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:06:10,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:06:10,469 INFO L87 Difference]: Start difference. First operand 184919 states and 282294 transitions. Second operand 9 states. [2019-09-07 23:06:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:06:41,555 INFO L93 Difference]: Finished difference Result 436638 states and 825784 transitions. [2019-09-07 23:06:41,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 23:06:41,555 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 954 [2019-09-07 23:06:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:06:42,932 INFO L225 Difference]: With dead ends: 436638 [2019-09-07 23:06:42,932 INFO L226 Difference]: Without dead ends: 247177 [2019-09-07 23:06:44,122 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 963 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-09-07 23:06:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247177 states. [2019-09-07 23:06:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247177 to 244558. [2019-09-07 23:06:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244558 states. [2019-09-07 23:06:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244558 states to 244558 states and 433140 transitions. [2019-09-07 23:06:52,877 INFO L78 Accepts]: Start accepts. Automaton has 244558 states and 433140 transitions. Word has length 954 [2019-09-07 23:06:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:06:52,879 INFO L475 AbstractCegarLoop]: Abstraction has 244558 states and 433140 transitions. [2019-09-07 23:06:52,879 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:06:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 244558 states and 433140 transitions. [2019-09-07 23:06:52,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2019-09-07 23:06:52,905 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:06:52,906 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-07 23:06:52,906 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:06:52,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:06:52,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1307054921, now seen corresponding path program 1 times [2019-09-07 23:06:52,907 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:06:52,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:06:52,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:52,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:06:52,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:07:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-09-07 23:07:00,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:07:00,664 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 23:07:00,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:07:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:07:00,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:07:00,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:07:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-09-07 23:07:01,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:07:01,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:07:01,596 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:07:01,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:07:01,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:07:01,596 INFO L87 Difference]: Start difference. First operand 244558 states and 433140 transitions. Second operand 9 states. [2019-09-07 23:08:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:08:20,546 INFO L93 Difference]: Finished difference Result 741993 states and 1878928 transitions. [2019-09-07 23:08:20,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 23:08:20,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 971 [2019-09-07 23:08:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:08:23,442 INFO L225 Difference]: With dead ends: 741993 [2019-09-07 23:08:23,443 INFO L226 Difference]: Without dead ends: 477398 [2019-09-07 23:08:32,985 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 994 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 23:08:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477398 states. [2019-09-07 23:09:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477398 to 475169. [2019-09-07 23:09:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475169 states. [2019-09-07 23:09:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475169 states to 475169 states and 1106163 transitions. [2019-09-07 23:09:20,717 INFO L78 Accepts]: Start accepts. Automaton has 475169 states and 1106163 transitions. Word has length 971 [2019-09-07 23:09:20,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:09:20,718 INFO L475 AbstractCegarLoop]: Abstraction has 475169 states and 1106163 transitions. [2019-09-07 23:09:20,718 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:09:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 475169 states and 1106163 transitions. [2019-09-07 23:09:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1098 [2019-09-07 23:09:20,759 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:09:20,760 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:20,761 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:09:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:09:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash -579862747, now seen corresponding path program 1 times [2019-09-07 23:09:20,761 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:09:20,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:09:20,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:20,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:09:20,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:09:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2019-09-07 23:09:31,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:09:31,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:09:31,121 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:09:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:09:31,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:09:31,122 INFO L87 Difference]: Start difference. First operand 475169 states and 1106163 transitions. Second operand 4 states. [2019-09-07 23:10:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:10:47,142 INFO L93 Difference]: Finished difference Result 1254478 states and 3454446 transitions. [2019-09-07 23:10:47,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:10:47,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1097 [2019-09-07 23:10:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:55,010 INFO L225 Difference]: With dead ends: 1254478 [2019-09-07 23:10:55,010 INFO L226 Difference]: Without dead ends: 782093 [2019-09-07 23:10:57,544 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 23:10:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782093 states.