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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:24:38,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:24:38,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:24:38,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:24:38,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:24:38,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:24:38,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:24:38,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:24:38,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:24:38,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:24:38,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:24:38,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:24:38,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:24:38,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:24:38,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:24:38,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:24:38,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:24:38,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 23:24:38,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 23:24:38,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 23:24:38,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 23:24:38,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 23:24:38,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 23:24:38,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 23:24:38,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 23:24:38,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:24:38,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:24:38,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:24:38,989 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 23:24:39,008 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:24:39,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:24:39,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:24:39,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:24:39,010 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:24:39,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:24:39,010 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:24:39,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:24:39,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:24:39,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:24:39,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:24:39,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:24:39,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:24:39,011 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:24:39,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:24:39,012 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:24:39,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:24:39,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:24:39,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:24:39,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:24:39,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:24:39,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:24:39,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:24:39,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:24:39,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:24:39,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:24:39,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:24:39,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:24:39,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:24:39,063 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:24:39,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:24:39,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:24:39,086 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:24:39,089 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:24:39,090 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50.c [2019-09-07 23:24:39,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11cdbdcb0/18cf2ba1fd2d468cba0a35cff0ed1514/FLAG4c9a6addc [2019-09-07 23:24:40,039 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:24:40,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label50.c [2019-09-07 23:24:40,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11cdbdcb0/18cf2ba1fd2d468cba0a35cff0ed1514/FLAG4c9a6addc [2019-09-07 23:24:40,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11cdbdcb0/18cf2ba1fd2d468cba0a35cff0ed1514 [2019-09-07 23:24:40,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:24:40,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:24:40,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:24:40,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:24:40,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:24:40,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:24:40" (1/1) ... [2019-09-07 23:24:40,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbe1c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:40, skipping insertion in model container [2019-09-07 23:24:40,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:24:40" (1/1) ... [2019-09-07 23:24:40,536 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:24:40,768 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:24:42,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:24:43,006 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:24:44,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:24:44,171 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:24:44,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44 WrapperNode [2019-09-07 23:24:44,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:24:44,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:24:44,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:24:44,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:24:44,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44" (1/1) ... [2019-09-07 23:24:44,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44" (1/1) ... [2019-09-07 23:24:44,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44" (1/1) ... [2019-09-07 23:24:44,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44" (1/1) ... [2019-09-07 23:24:44,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44" (1/1) ... [2019-09-07 23:24:44,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44" (1/1) ... [2019-09-07 23:24:44,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44" (1/1) ... [2019-09-07 23:24:44,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:24:44,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:24:44,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:24:44,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:24:44,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44" (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 23:24:44,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:24:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:24:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:24:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:24:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:24:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:24:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:24:44,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:24:44,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:24:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:24:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:24:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:24:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:24:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:24:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:24:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:24:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:24:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:24:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:24:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:24:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:24:55,146 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:24:55,146 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:24:55,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:24:55 BoogieIcfgContainer [2019-09-07 23:24:55,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:24:55,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:24:55,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:24:55,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:24:55,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:24:40" (1/3) ... [2019-09-07 23:24:55,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a9c2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:24:55, skipping insertion in model container [2019-09-07 23:24:55,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:24:44" (2/3) ... [2019-09-07 23:24:55,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a9c2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:24:55, skipping insertion in model container [2019-09-07 23:24:55,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:24:55" (3/3) ... [2019-09-07 23:24:55,168 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label50.c [2019-09-07 23:24:55,181 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:24:55,192 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:24:55,209 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:24:55,250 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:24:55,250 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:24:55,251 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:24:55,251 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:24:55,251 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:24:55,251 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:24:55,251 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:24:55,251 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:24:55,252 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:24:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:24:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-07 23:24:55,304 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:24:55,305 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] [2019-09-07 23:24:55,307 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:24:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:24:55,313 INFO L82 PathProgramCache]: Analyzing trace with hash 758600274, now seen corresponding path program 1 times [2019-09-07 23:24:55,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:24:55,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:24:55,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:55,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:24:55,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:24:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:24:55,585 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 23:24:55,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:24:55,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:24:55,593 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:24:55,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:24:55,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:24:55,611 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-07 23:25:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:13,249 INFO L93 Difference]: Finished difference Result 6506 states and 12377 transitions. [2019-09-07 23:25:13,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:25:13,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-09-07 23:25:13,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:13,307 INFO L225 Difference]: With dead ends: 6506 [2019-09-07 23:25:13,307 INFO L226 Difference]: Without dead ends: 4647 [2019-09-07 23:25:13,325 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 23:25:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2019-09-07 23:25:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4608. [2019-09-07 23:25:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4608 states. [2019-09-07 23:25:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 7227 transitions. [2019-09-07 23:25:13,583 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 7227 transitions. Word has length 26 [2019-09-07 23:25:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:25:13,584 INFO L475 AbstractCegarLoop]: Abstraction has 4608 states and 7227 transitions. [2019-09-07 23:25:13,585 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:25:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 7227 transitions. [2019-09-07 23:25:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-07 23:25:13,593 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:13,594 INFO L399 BasicCegarLoop]: trace histogram [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 23:25:13,594 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:13,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:13,595 INFO L82 PathProgramCache]: Analyzing trace with hash 576957151, now seen corresponding path program 1 times [2019-09-07 23:25:13,595 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:13,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:13,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:13,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:13,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:25:13,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:25:13,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:25:13,933 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:25:13,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:25:13,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:25:13,934 INFO L87 Difference]: Start difference. First operand 4608 states and 7227 transitions. Second operand 6 states. [2019-09-07 23:25:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:28,389 INFO L93 Difference]: Finished difference Result 13631 states and 21679 transitions. [2019-09-07 23:25:28,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:25:28,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-09-07 23:25:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:28,446 INFO L225 Difference]: With dead ends: 13631 [2019-09-07 23:25:28,446 INFO L226 Difference]: Without dead ends: 9029 [2019-09-07 23:25:28,461 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 23:25:28,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2019-09-07 23:25:28,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 8961. [2019-09-07 23:25:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8961 states. [2019-09-07 23:25:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 13764 transitions. [2019-09-07 23:25:28,796 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 13764 transitions. Word has length 97 [2019-09-07 23:25:28,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:25:28,797 INFO L475 AbstractCegarLoop]: Abstraction has 8961 states and 13764 transitions. [2019-09-07 23:25:28,797 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:25:28,798 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 13764 transitions. [2019-09-07 23:25:28,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-07 23:25:28,800 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:28,800 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:25:28,801 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:28,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:28,802 INFO L82 PathProgramCache]: Analyzing trace with hash 223919606, now seen corresponding path program 1 times [2019-09-07 23:25:28,802 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:28,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:28,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:28,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:28,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:25:28,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:25:28,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:25:28,993 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:25:28,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:25:28,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:25:28,994 INFO L87 Difference]: Start difference. First operand 8961 states and 13764 transitions. Second operand 6 states. [2019-09-07 23:25:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:43,365 INFO L93 Difference]: Finished difference Result 26988 states and 42864 transitions. [2019-09-07 23:25:43,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:25:43,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-09-07 23:25:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:43,459 INFO L225 Difference]: With dead ends: 26988 [2019-09-07 23:25:43,467 INFO L226 Difference]: Without dead ends: 18033 [2019-09-07 23:25:43,494 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 23:25:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2019-09-07 23:25:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 17865. [2019-09-07 23:25:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17865 states. [2019-09-07 23:25:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17865 states to 17865 states and 27911 transitions. [2019-09-07 23:25:44,006 INFO L78 Accepts]: Start accepts. Automaton has 17865 states and 27911 transitions. Word has length 99 [2019-09-07 23:25:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:25:44,006 INFO L475 AbstractCegarLoop]: Abstraction has 17865 states and 27911 transitions. [2019-09-07 23:25:44,007 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:25:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 17865 states and 27911 transitions. [2019-09-07 23:25:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-07 23:25:44,016 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:25:44,016 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:25:44,016 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:25:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:25:44,017 INFO L82 PathProgramCache]: Analyzing trace with hash 689032413, now seen corresponding path program 1 times [2019-09-07 23:25:44,017 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:25:44,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:25:44,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:44,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:25:44,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:25:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:25:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:25:44,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:25:44,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:25:44,210 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:25:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:25:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:25:44,211 INFO L87 Difference]: Start difference. First operand 17865 states and 27911 transitions. Second operand 6 states. [2019-09-07 23:25:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:25:59,324 INFO L93 Difference]: Finished difference Result 54318 states and 88644 transitions. [2019-09-07 23:25:59,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:25:59,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-07 23:25:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:25:59,491 INFO L225 Difference]: With dead ends: 54318 [2019-09-07 23:25:59,492 INFO L226 Difference]: Without dead ends: 36459 [2019-09-07 23:25:59,542 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 23:25:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36459 states. [2019-09-07 23:26:00,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36459 to 36139. [2019-09-07 23:26:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36139 states. [2019-09-07 23:26:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36139 states to 36139 states and 56221 transitions. [2019-09-07 23:26:00,397 INFO L78 Accepts]: Start accepts. Automaton has 36139 states and 56221 transitions. Word has length 107 [2019-09-07 23:26:00,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:26:00,397 INFO L475 AbstractCegarLoop]: Abstraction has 36139 states and 56221 transitions. [2019-09-07 23:26:00,397 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:26:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 36139 states and 56221 transitions. [2019-09-07 23:26:00,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-09-07 23:26:00,405 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:26:00,405 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:26:00,405 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:26:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:26:00,406 INFO L82 PathProgramCache]: Analyzing trace with hash 299388871, now seen corresponding path program 1 times [2019-09-07 23:26:00,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:26:00,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:26:00,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:00,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:26:00,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:26:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:26:00,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:26:00,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:26:00,752 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:26:00,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:26:00,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:26:00,754 INFO L87 Difference]: Start difference. First operand 36139 states and 56221 transitions. Second operand 5 states. [2019-09-07 23:26:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:26:17,949 INFO L93 Difference]: Finished difference Result 108159 states and 176881 transitions. [2019-09-07 23:26:17,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:26:17,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2019-09-07 23:26:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:26:18,223 INFO L225 Difference]: With dead ends: 108159 [2019-09-07 23:26:18,224 INFO L226 Difference]: Without dead ends: 72026 [2019-09-07 23:26:18,291 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 23:26:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72026 states. [2019-09-07 23:26:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72026 to 66889. [2019-09-07 23:26:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66889 states. [2019-09-07 23:26:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66889 states to 66889 states and 97062 transitions. [2019-09-07 23:26:19,721 INFO L78 Accepts]: Start accepts. Automaton has 66889 states and 97062 transitions. Word has length 127 [2019-09-07 23:26:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:26:19,722 INFO L475 AbstractCegarLoop]: Abstraction has 66889 states and 97062 transitions. [2019-09-07 23:26:19,722 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:26:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 66889 states and 97062 transitions. [2019-09-07 23:26:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-09-07 23:26:19,725 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:26:19,726 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:26:19,726 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:26:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:26:19,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1516435522, now seen corresponding path program 1 times [2019-09-07 23:26:19,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:26:19,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:26:19,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:19,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:26:19,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:26:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:26:19,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:26:19,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:26:19,966 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:26:19,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:26:19,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:26:19,967 INFO L87 Difference]: Start difference. First operand 66889 states and 97062 transitions. Second operand 6 states. [2019-09-07 23:26:37,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:26:37,185 INFO L93 Difference]: Finished difference Result 165229 states and 251119 transitions. [2019-09-07 23:26:37,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:26:37,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2019-09-07 23:26:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:26:37,496 INFO L225 Difference]: With dead ends: 165229 [2019-09-07 23:26:37,497 INFO L226 Difference]: Without dead ends: 98346 [2019-09-07 23:26:37,908 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 23:26:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98346 states. [2019-09-07 23:26:39,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98346 to 96348. [2019-09-07 23:26:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96348 states. [2019-09-07 23:26:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96348 states to 96348 states and 136864 transitions. [2019-09-07 23:26:39,870 INFO L78 Accepts]: Start accepts. Automaton has 96348 states and 136864 transitions. Word has length 190 [2019-09-07 23:26:39,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:26:39,871 INFO L475 AbstractCegarLoop]: Abstraction has 96348 states and 136864 transitions. [2019-09-07 23:26:39,871 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:26:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 96348 states and 136864 transitions. [2019-09-07 23:26:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2019-09-07 23:26:39,887 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:26:39,888 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:39,889 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:26:39,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:26:39,894 INFO L82 PathProgramCache]: Analyzing trace with hash -237751555, now seen corresponding path program 1 times [2019-09-07 23:26:39,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:26:39,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:26:39,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:39,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:26:39,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:26:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:26:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:26:42,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:26:42,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:26:42,469 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:26:42,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:26:42,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:26:42,471 INFO L87 Difference]: Start difference. First operand 96348 states and 136864 transitions. Second operand 4 states. [2019-09-07 23:26:57,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:26:57,668 INFO L93 Difference]: Finished difference Result 225459 states and 323466 transitions. [2019-09-07 23:26:57,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:26:57,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 619 [2019-09-07 23:26:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:26:57,944 INFO L225 Difference]: With dead ends: 225459 [2019-09-07 23:26:57,945 INFO L226 Difference]: Without dead ends: 129117 [2019-09-07 23:26:58,042 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 23:26:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129117 states. [2019-09-07 23:26:59,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129117 to 123483. [2019-09-07 23:26:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123483 states. [2019-09-07 23:27:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123483 states to 123483 states and 162726 transitions. [2019-09-07 23:27:03,222 INFO L78 Accepts]: Start accepts. Automaton has 123483 states and 162726 transitions. Word has length 619 [2019-09-07 23:27:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:27:03,223 INFO L475 AbstractCegarLoop]: Abstraction has 123483 states and 162726 transitions. [2019-09-07 23:27:03,223 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:27:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand 123483 states and 162726 transitions. [2019-09-07 23:27:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2019-09-07 23:27:03,250 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:27:03,251 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2019-09-07 23:27:03,251 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:27:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:27:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1455738187, now seen corresponding path program 1 times [2019-09-07 23:27:03,252 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:27:03,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:27:03,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:03,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:03,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 157 proven. 69 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-09-07 23:27:04,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:27:04,066 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 23:27:04,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:04,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:27:04,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:27:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2019-09-07 23:27:05,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:27:05,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:27:05,136 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:27:05,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:27:05,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:27:05,137 INFO L87 Difference]: Start difference. First operand 123483 states and 162726 transitions. Second operand 7 states. [2019-09-07 23:27:37,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:27:37,649 INFO L93 Difference]: Finished difference Result 364509 states and 513273 transitions. [2019-09-07 23:27:37,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 23:27:37,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 788 [2019-09-07 23:27:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:27:39,516 INFO L225 Difference]: With dead ends: 364509 [2019-09-07 23:27:39,517 INFO L226 Difference]: Without dead ends: 241032 [2019-09-07 23:27:39,682 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 793 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-09-07 23:27:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241032 states. [2019-09-07 23:27:49,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241032 to 232294. [2019-09-07 23:27:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232294 states. [2019-09-07 23:27:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232294 states to 232294 states and 302174 transitions. [2019-09-07 23:27:49,456 INFO L78 Accepts]: Start accepts. Automaton has 232294 states and 302174 transitions. Word has length 788 [2019-09-07 23:27:49,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:27:49,458 INFO L475 AbstractCegarLoop]: Abstraction has 232294 states and 302174 transitions. [2019-09-07 23:27:49,458 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:27:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 232294 states and 302174 transitions. [2019-09-07 23:27:49,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2019-09-07 23:27:49,474 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:27:49,475 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:27:49,475 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:27:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:27:49,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1228195681, now seen corresponding path program 1 times [2019-09-07 23:27:49,476 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:27:49,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:27:49,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:49,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:49,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:27:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:51,473 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 23:27:51,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:27:51,474 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 23:27:51,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:27:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:27:51,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:27:51,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:27:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 23:27:52,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:27:52,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:27:52,900 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:27:52,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:27:52,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:27:52,900 INFO L87 Difference]: Start difference. First operand 232294 states and 302174 transitions. Second operand 9 states. [2019-09-07 23:28:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:28:27,534 INFO L93 Difference]: Finished difference Result 588467 states and 844601 transitions. [2019-09-07 23:28:27,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-07 23:28:27,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 976 [2019-09-07 23:28:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:28:28,809 INFO L225 Difference]: With dead ends: 588467 [2019-09-07 23:28:28,809 INFO L226 Difference]: Without dead ends: 335858 [2019-09-07 23:28:29,141 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 988 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2019-09-07 23:28:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335858 states. [2019-09-07 23:28:39,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335858 to 333451. [2019-09-07 23:28:39,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333451 states. [2019-09-07 23:28:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333451 states to 333451 states and 453981 transitions. [2019-09-07 23:28:40,003 INFO L78 Accepts]: Start accepts. Automaton has 333451 states and 453981 transitions. Word has length 976 [2019-09-07 23:28:40,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:28:40,005 INFO L475 AbstractCegarLoop]: Abstraction has 333451 states and 453981 transitions. [2019-09-07 23:28:40,005 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:28:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 333451 states and 453981 transitions. [2019-09-07 23:28:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2019-09-07 23:28:40,037 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:28:40,038 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:40,039 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:28:40,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:28:40,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1324345106, now seen corresponding path program 1 times [2019-09-07 23:28:40,039 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:28:40,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:28:40,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:28:40,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:28:40,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:28:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:28:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2019-09-07 23:28:46,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:28:46,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:28:46,107 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:28:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:28:46,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:28:46,107 INFO L87 Difference]: Start difference. First operand 333451 states and 453981 transitions. Second operand 4 states. [2019-09-07 23:29:02,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:29:02,872 INFO L93 Difference]: Finished difference Result 665636 states and 912598 transitions. [2019-09-07 23:29:02,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:29:02,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1086 [2019-09-07 23:29:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:29:04,144 INFO L225 Difference]: With dead ends: 665636 [2019-09-07 23:29:04,144 INFO L226 Difference]: Without dead ends: 333580 [2019-09-07 23:29:05,588 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 23:29:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333580 states. [2019-09-07 23:29:11,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333580 to 333399. [2019-09-07 23:29:11,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333399 states. [2019-09-07 23:29:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333399 states to 333399 states and 438476 transitions. [2019-09-07 23:29:23,020 INFO L78 Accepts]: Start accepts. Automaton has 333399 states and 438476 transitions. Word has length 1086 [2019-09-07 23:29:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:29:23,021 INFO L475 AbstractCegarLoop]: Abstraction has 333399 states and 438476 transitions. [2019-09-07 23:29:23,021 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:29:23,021 INFO L276 IsEmpty]: Start isEmpty. Operand 333399 states and 438476 transitions. [2019-09-07 23:29:23,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1220 [2019-09-07 23:29:23,099 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:29:23,100 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-09-07 23:29:23,100 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:29:23,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:29:23,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1389491024, now seen corresponding path program 1 times [2019-09-07 23:29:23,101 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:29:23,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:29:23,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:29:23,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:29:23,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:29:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:29:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 523 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2019-09-07 23:29:32,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:29:32,296 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 23:29:32,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:29:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:29:32,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 46 conjunts are in the unsatisfiable core [2019-09-07 23:29:32,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:29:32,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-07 23:29:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-09-07 23:29:34,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:29:34,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2019-09-07 23:29:34,788 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-07 23:29:34,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-07 23:29:34,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-09-07 23:29:34,789 INFO L87 Difference]: Start difference. First operand 333399 states and 438476 transitions. Second operand 21 states. [2019-09-07 23:29:36,562 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-07 23:29:39,359 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-07 23:29:39,567 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-07 23:29:39,762 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-07 23:29:40,613 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-07 23:29:45,144 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-07 23:29:46,170 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-07 23:29:46,732 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-07 23:29:50,225 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-07 23:29:53,314 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-07 23:29:53,537 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-07 23:29:55,521 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-07 23:29:57,981 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-09-07 23:30:01,407 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-07 23:30:05,195 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-07 23:30:06,472 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-07 23:30:07,620 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-07 23:30:08,525 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-07 23:30:10,082 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2019-09-07 23:30:10,476 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-07 23:30:11,442 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-07 23:30:11,949 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-09-07 23:30:16,361 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-07 23:30:33,608 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-07 23:30:41,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:30:41,300 INFO L93 Difference]: Finished difference Result 669486 states and 860989 transitions. [2019-09-07 23:30:41,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2019-09-07 23:30:41,301 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1219 [2019-09-07 23:30:41,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:30:42,102 INFO L225 Difference]: With dead ends: 669486 [2019-09-07 23:30:42,102 INFO L226 Difference]: Without dead ends: 337487 [2019-09-07 23:30:42,497 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1401 GetRequests, 1282 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5028 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2261, Invalid=12019, Unknown=0, NotChecked=0, Total=14280 [2019-09-07 23:30:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337487 states. [2019-09-07 23:30:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337487 to 333237. [2019-09-07 23:30:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333237 states. [2019-09-07 23:30:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333237 states to 333237 states and 412432 transitions. [2019-09-07 23:30:50,761 INFO L78 Accepts]: Start accepts. Automaton has 333237 states and 412432 transitions. Word has length 1219 [2019-09-07 23:30:50,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:30:50,762 INFO L475 AbstractCegarLoop]: Abstraction has 333237 states and 412432 transitions. [2019-09-07 23:30:50,762 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-07 23:30:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 333237 states and 412432 transitions. [2019-09-07 23:30:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1341 [2019-09-07 23:30:50,832 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:30:50,833 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:30:50,834 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:30:50,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:30:50,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1124417105, now seen corresponding path program 1 times [2019-09-07 23:30:50,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:30:50,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:30:50,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:30:50,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:30:50,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:30:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:30:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 723 proven. 25 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2019-09-07 23:30:59,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:30:59,058 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 23:30:59,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:30:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:30:59,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 1673 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-07 23:30:59,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:30:59,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-09-07 23:31:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 753 proven. 211 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-07 23:31:02,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:31:02,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 23:31:02,276 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 23:31:02,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 23:31:02,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-09-07 23:31:02,277 INFO L87 Difference]: Start difference. First operand 333237 states and 412432 transitions. Second operand 16 states. [2019-09-07 23:31:16,308 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2019-09-07 23:31:28,293 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 23:32:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:32:44,098 INFO L93 Difference]: Finished difference Result 1078294 states and 1443627 transitions. [2019-09-07 23:32:44,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2019-09-07 23:32:44,099 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1340 [2019-09-07 23:32:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:32:47,756 INFO L225 Difference]: With dead ends: 1078294 [2019-09-07 23:32:47,756 INFO L226 Difference]: Without dead ends: 741965 [2019-09-07 23:32:48,240 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1537 GetRequests, 1428 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4455 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1853, Invalid=10137, Unknown=0, NotChecked=0, Total=11990 [2019-09-07 23:32:48,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741965 states. [2019-09-07 23:33:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741965 to 599206. [2019-09-07 23:33:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599206 states. [2019-09-07 23:33:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599206 states to 599206 states and 770932 transitions. [2019-09-07 23:33:13,860 INFO L78 Accepts]: Start accepts. Automaton has 599206 states and 770932 transitions. Word has length 1340 [2019-09-07 23:33:13,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:33:13,861 INFO L475 AbstractCegarLoop]: Abstraction has 599206 states and 770932 transitions. [2019-09-07 23:33:13,861 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 23:33:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 599206 states and 770932 transitions. [2019-09-07 23:33:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1671 [2019-09-07 23:33:13,889 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:33:13,889 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:33:13,890 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:33:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:33:13,890 INFO L82 PathProgramCache]: Analyzing trace with hash 259955688, now seen corresponding path program 1 times [2019-09-07 23:33:13,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:33:13,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:33:13,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:33:13,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:33:13,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:33:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:33:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 667 proven. 1111 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2019-09-07 23:33:24,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:33:24,992 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 23:33:25,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:33:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:33:25,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:33:25,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:33:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 899 proven. 2 refuted. 0 times theorem prover too weak. 1419 trivial. 0 not checked. [2019-09-07 23:33:26,491 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:33:26,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 23:33:26,494 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 23:33:26,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 23:33:26,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 23:33:26,496 INFO L87 Difference]: Start difference. First operand 599206 states and 770932 transitions. Second operand 11 states. [2019-09-07 23:34:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:34:01,093 INFO L93 Difference]: Finished difference Result 1193002 states and 1539273 transitions. [2019-09-07 23:34:01,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-07 23:34:01,093 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1670 [2019-09-07 23:34:01,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:34:02,837 INFO L225 Difference]: With dead ends: 1193002 [2019-09-07 23:34:02,837 INFO L226 Difference]: Without dead ends: 583689 [2019-09-07 23:34:04,829 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1720 GetRequests, 1691 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2019-09-07 23:34:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583689 states. [2019-09-07 23:34:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583689 to 551463. [2019-09-07 23:34:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551463 states. [2019-09-07 23:34:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551463 states to 551463 states and 677173 transitions. [2019-09-07 23:34:23,411 INFO L78 Accepts]: Start accepts. Automaton has 551463 states and 677173 transitions. Word has length 1670 [2019-09-07 23:34:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:34:23,413 INFO L475 AbstractCegarLoop]: Abstraction has 551463 states and 677173 transitions. [2019-09-07 23:34:23,413 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 23:34:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 551463 states and 677173 transitions. [2019-09-07 23:34:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1825 [2019-09-07 23:34:23,476 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:34:23,477 INFO L399 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:34:23,477 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:34:23,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:34:23,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2145767998, now seen corresponding path program 1 times [2019-09-07 23:34:23,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:34:23,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:34:23,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:34:23,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:34:23,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:34:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:34:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2909 backedges. 891 proven. 231 refuted. 0 times theorem prover too weak. 1787 trivial. 0 not checked. [2019-09-07 23:34:33,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:34:33,030 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:34:33,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:34:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:34:33,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 2242 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:34:33,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:34:33,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 23:34:33,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 23:34:33,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 23:34:33,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 23:34:33,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 23:34:33,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 23:34:33,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 23:34:34,339 WARN L188 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 21 [2019-09-07 23:34:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2909 backedges. 1783 proven. 2 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2019-09-07 23:34:35,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:34:35,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 23:34:35,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 23:34:35,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 23:34:35,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-09-07 23:34:35,774 INFO L87 Difference]: Start difference. First operand 551463 states and 677173 transitions. Second operand 8 states. [2019-09-07 23:35:46,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:35:46,142 INFO L93 Difference]: Finished difference Result 1452090 states and 1835883 transitions. [2019-09-07 23:35:46,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 23:35:46,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1824 [2019-09-07 23:35:46,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:35:50,424 INFO L225 Difference]: With dead ends: 1452090 [2019-09-07 23:35:50,424 INFO L226 Difference]: Without dead ends: 899027 [2019-09-07 23:35:51,139 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1876 GetRequests, 1846 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2019-09-07 23:35:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899027 states.