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_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:09:28,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:09:28,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:09:28,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:09:28,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:09:28,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:09:28,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:09:28,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:09:28,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:09:28,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:09:28,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:09:28,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:09:28,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:09:28,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:09:28,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:09:28,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:09:28,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:09:28,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 23:09:28,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 23:09:28,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 23:09:28,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 23:09:28,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 23:09:28,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 23:09:28,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 23:09:28,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 23:09:28,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:09:28,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:09:28,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:09:28,368 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 23:09:28,382 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:09:28,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:09:28,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:09:28,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:09:28,384 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:09:28,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:09:28,384 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:09:28,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:09:28,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:09:28,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:09:28,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:09:28,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:09:28,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:09:28,386 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:09:28,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:09:28,386 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:09:28,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:09:28,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:09:28,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:09:28,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:09:28,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:09:28,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:09:28,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:09:28,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:09:28,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:09:28,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:09:28,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:09:28,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:09:28,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:09:28,422 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:09:28,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:09:28,444 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:09:28,445 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:09:28,446 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:09:28,447 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label27.c [2019-09-07 23:09:28,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67529dee0/8bf8f76f2bbd4679959477b80d8e185f/FLAGc486aafa4 [2019-09-07 23:09:29,532 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:09:29,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label27.c [2019-09-07 23:09:29,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67529dee0/8bf8f76f2bbd4679959477b80d8e185f/FLAGc486aafa4 [2019-09-07 23:09:29,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67529dee0/8bf8f76f2bbd4679959477b80d8e185f [2019-09-07 23:09:29,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:09:29,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:09:29,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:09:29,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:09:29,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:09:29,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:09:29" (1/1) ... [2019-09-07 23:09:29,895 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 11:09:29, skipping insertion in model container [2019-09-07 23:09:29,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:09:29" (1/1) ... [2019-09-07 23:09:29,904 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:09:30,119 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:09:32,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:09:32,182 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:09:33,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:09:33,361 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:09:33,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33 WrapperNode [2019-09-07 23:09:33,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:09:33,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:09:33,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:09:33,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:09:33,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33" (1/1) ... [2019-09-07 23:09:33,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33" (1/1) ... [2019-09-07 23:09:33,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33" (1/1) ... [2019-09-07 23:09:33,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33" (1/1) ... [2019-09-07 23:09:33,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33" (1/1) ... [2019-09-07 23:09:33,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33" (1/1) ... [2019-09-07 23:09:33,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33" (1/1) ... [2019-09-07 23:09:33,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:09:33,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:09:33,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:09:33,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:09:33,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33" (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 23:09:34,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:09:34,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:09:34,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:09:34,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:09:34,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:09:34,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:09:34,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:09:34,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:09:34,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:09:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:09:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:09:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:09:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:09:34,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:09:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:09:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:09:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:09:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:09:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:09:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:09:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:09:45,007 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:09:45,007 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:09:45,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:09:45 BoogieIcfgContainer [2019-09-07 23:09:45,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:09:45,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:09:45,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:09:45,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:09:45,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:09:29" (1/3) ... [2019-09-07 23:09:45,030 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 11:09:45, skipping insertion in model container [2019-09-07 23:09:45,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:33" (2/3) ... [2019-09-07 23:09:45,030 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 11:09:45, skipping insertion in model container [2019-09-07 23:09:45,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:09:45" (3/3) ... [2019-09-07 23:09:45,041 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label27.c [2019-09-07 23:09:45,054 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:09:45,070 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:09:45,099 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:09:45,180 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:09:45,181 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:09:45,181 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:09:45,181 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:09:45,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:09:45,182 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:09:45,182 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:09:45,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:09:45,182 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:09:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:09:45,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-07 23:09:45,265 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:09:45,267 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:09:45,271 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:09:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:09:45,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1728106772, now seen corresponding path program 1 times [2019-09-07 23:09:45,283 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:09:45,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:09:45,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:45,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:09:45,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:09:45,682 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 23:09:45,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:09:45,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:09:45,689 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:09:45,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:09:45,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:09:45,707 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-07 23:10:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:10:03,168 INFO L93 Difference]: Finished difference Result 6461 states and 12328 transitions. [2019-09-07 23:10:03,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:10:03,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-09-07 23:10:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:03,219 INFO L225 Difference]: With dead ends: 6461 [2019-09-07 23:10:03,219 INFO L226 Difference]: Without dead ends: 4602 [2019-09-07 23:10:03,233 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 23:10:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2019-09-07 23:10:03,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 3138. [2019-09-07 23:10:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2019-09-07 23:10:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4994 transitions. [2019-09-07 23:10:03,470 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4994 transitions. Word has length 33 [2019-09-07 23:10:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:10:03,471 INFO L475 AbstractCegarLoop]: Abstraction has 3138 states and 4994 transitions. [2019-09-07 23:10:03,471 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:10:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4994 transitions. [2019-09-07 23:10:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-07 23:10:03,479 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:10:03,481 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:03,481 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:10:03,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:10:03,482 INFO L82 PathProgramCache]: Analyzing trace with hash -912055232, now seen corresponding path program 1 times [2019-09-07 23:10:03,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:10:03,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:10:03,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:03,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:03,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:10:03,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:10:03,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:10:03,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:10:03,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:10:03,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:10:03,775 INFO L87 Difference]: Start difference. First operand 3138 states and 4994 transitions. Second operand 6 states. [2019-09-07 23:10:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:10:17,348 INFO L93 Difference]: Finished difference Result 9253 states and 14826 transitions. [2019-09-07 23:10:17,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:10:17,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2019-09-07 23:10:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:17,388 INFO L225 Difference]: With dead ends: 9253 [2019-09-07 23:10:17,388 INFO L226 Difference]: Without dead ends: 6121 [2019-09-07 23:10:17,397 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 23:10:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2019-09-07 23:10:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 6066. [2019-09-07 23:10:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6066 states. [2019-09-07 23:10:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 9393 transitions. [2019-09-07 23:10:17,583 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 9393 transitions. Word has length 104 [2019-09-07 23:10:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:10:17,583 INFO L475 AbstractCegarLoop]: Abstraction has 6066 states and 9393 transitions. [2019-09-07 23:10:17,583 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:10:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 9393 transitions. [2019-09-07 23:10:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-07 23:10:17,586 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:10:17,586 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:17,587 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:10:17,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:10:17,587 INFO L82 PathProgramCache]: Analyzing trace with hash -611181303, now seen corresponding path program 1 times [2019-09-07 23:10:17,587 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:10:17,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:10:17,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:17,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:17,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:10:17,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:10:17,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:10:17,729 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:10:17,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:10:17,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:10:17,730 INFO L87 Difference]: Start difference. First operand 6066 states and 9393 transitions. Second operand 6 states. [2019-09-07 23:10:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:10:31,306 INFO L93 Difference]: Finished difference Result 18223 states and 28855 transitions. [2019-09-07 23:10:31,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:10:31,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2019-09-07 23:10:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:31,386 INFO L225 Difference]: With dead ends: 18223 [2019-09-07 23:10:31,387 INFO L226 Difference]: Without dead ends: 12163 [2019-09-07 23:10:31,404 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 23:10:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12163 states. [2019-09-07 23:10:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12163 to 12000. [2019-09-07 23:10:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12000 states. [2019-09-07 23:10:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12000 states to 12000 states and 18689 transitions. [2019-09-07 23:10:31,732 INFO L78 Accepts]: Start accepts. Automaton has 12000 states and 18689 transitions. Word has length 106 [2019-09-07 23:10:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:10:31,733 INFO L475 AbstractCegarLoop]: Abstraction has 12000 states and 18689 transitions. [2019-09-07 23:10:31,733 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:10:31,733 INFO L276 IsEmpty]: Start isEmpty. Operand 12000 states and 18689 transitions. [2019-09-07 23:10:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-07 23:10:31,745 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:10:31,746 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:31,746 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:10:31,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:10:31,746 INFO L82 PathProgramCache]: Analyzing trace with hash -215811262, now seen corresponding path program 1 times [2019-09-07 23:10:31,747 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:10:31,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:10:31,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:31,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:31,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:10:32,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:10:32,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:10:32,025 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:10:32,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:10:32,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:10:32,026 INFO L87 Difference]: Start difference. First operand 12000 states and 18689 transitions. Second operand 6 states. [2019-09-07 23:10:48,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:10:48,368 INFO L93 Difference]: Finished difference Result 36534 states and 58694 transitions. [2019-09-07 23:10:48,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:10:48,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2019-09-07 23:10:48,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:48,453 INFO L225 Difference]: With dead ends: 36534 [2019-09-07 23:10:48,453 INFO L226 Difference]: Without dead ends: 24540 [2019-09-07 23:10:48,482 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 23:10:48,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24540 states. [2019-09-07 23:10:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24540 to 24252. [2019-09-07 23:10:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24252 states. [2019-09-07 23:10:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24252 states to 24252 states and 37269 transitions. [2019-09-07 23:10:49,140 INFO L78 Accepts]: Start accepts. Automaton has 24252 states and 37269 transitions. Word has length 114 [2019-09-07 23:10:49,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:10:49,140 INFO L475 AbstractCegarLoop]: Abstraction has 24252 states and 37269 transitions. [2019-09-07 23:10:49,141 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:10:49,141 INFO L276 IsEmpty]: Start isEmpty. Operand 24252 states and 37269 transitions. [2019-09-07 23:10:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-07 23:10:49,144 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:10:49,144 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:49,144 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:10:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:10:49,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2107567464, now seen corresponding path program 1 times [2019-09-07 23:10:49,145 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:10:49,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:10:49,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:49,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:49,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:10:49,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:10:49,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:10:49,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:10:49,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:10:49,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:10:49,292 INFO L87 Difference]: Start difference. First operand 24252 states and 37269 transitions. Second operand 5 states. [2019-09-07 23:11:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:11:07,584 INFO L93 Difference]: Finished difference Result 72212 states and 115447 transitions. [2019-09-07 23:11:07,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:11:07,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-09-07 23:11:07,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:11:07,740 INFO L225 Difference]: With dead ends: 72212 [2019-09-07 23:11:07,740 INFO L226 Difference]: Without dead ends: 47966 [2019-09-07 23:11:07,813 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 23:11:07,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47966 states. [2019-09-07 23:11:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47966 to 44272. [2019-09-07 23:11:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44272 states. [2019-09-07 23:11:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44272 states to 44272 states and 62763 transitions. [2019-09-07 23:11:09,117 INFO L78 Accepts]: Start accepts. Automaton has 44272 states and 62763 transitions. Word has length 134 [2019-09-07 23:11:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:11:09,118 INFO L475 AbstractCegarLoop]: Abstraction has 44272 states and 62763 transitions. [2019-09-07 23:11:09,119 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:11:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 44272 states and 62763 transitions. [2019-09-07 23:11:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-09-07 23:11:09,122 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:11:09,122 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:09,123 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:11:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:11:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1221994523, now seen corresponding path program 1 times [2019-09-07 23:11:09,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:11:09,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:11:09,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:09,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:11:09,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:11:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:11:09,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:11:09,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:11:09,379 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:11:09,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:11:09,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:11:09,380 INFO L87 Difference]: Start difference. First operand 44272 states and 62763 transitions. Second operand 6 states. [2019-09-07 23:11:23,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:11:23,951 INFO L93 Difference]: Finished difference Result 109696 states and 161354 transitions. [2019-09-07 23:11:23,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:11:23,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2019-09-07 23:11:23,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:11:24,185 INFO L225 Difference]: With dead ends: 109696 [2019-09-07 23:11:24,187 INFO L226 Difference]: Without dead ends: 65430 [2019-09-07 23:11:24,260 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 23:11:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65430 states. [2019-09-07 23:11:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65430 to 64982. [2019-09-07 23:11:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64982 states. [2019-09-07 23:11:25,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64982 states to 64982 states and 89754 transitions. [2019-09-07 23:11:25,564 INFO L78 Accepts]: Start accepts. Automaton has 64982 states and 89754 transitions. Word has length 197 [2019-09-07 23:11:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:11:25,568 INFO L475 AbstractCegarLoop]: Abstraction has 64982 states and 89754 transitions. [2019-09-07 23:11:25,568 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:11:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand 64982 states and 89754 transitions. [2019-09-07 23:11:25,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2019-09-07 23:11:25,581 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:11:25,581 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:25,583 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:11:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:11:25,587 INFO L82 PathProgramCache]: Analyzing trace with hash 404791086, now seen corresponding path program 1 times [2019-09-07 23:11:25,587 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:11:25,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:11:25,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:25,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:11:25,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:11:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 23:11:26,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:11:26,613 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:11:26,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:11:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:11:26,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:11:26,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:11:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:11:27,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:11:27,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-09-07 23:11:27,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:11:27,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:11:27,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:11:27,068 INFO L87 Difference]: Start difference. First operand 64982 states and 89754 transitions. Second operand 5 states. [2019-09-07 23:11:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:11:51,221 INFO L93 Difference]: Finished difference Result 197629 states and 282940 transitions. [2019-09-07 23:11:51,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:11:51,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 519 [2019-09-07 23:11:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:11:52,131 INFO L225 Difference]: With dead ends: 197629 [2019-09-07 23:11:52,132 INFO L226 Difference]: Without dead ends: 132653 [2019-09-07 23:11:52,330 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 525 SyntacticMatches, 3 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 23:11:52,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132653 states. [2019-09-07 23:11:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132653 to 126894. [2019-09-07 23:11:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126894 states. [2019-09-07 23:11:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126894 states to 126894 states and 169254 transitions. [2019-09-07 23:11:58,310 INFO L78 Accepts]: Start accepts. Automaton has 126894 states and 169254 transitions. Word has length 519 [2019-09-07 23:11:58,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:11:58,311 INFO L475 AbstractCegarLoop]: Abstraction has 126894 states and 169254 transitions. [2019-09-07 23:11:58,311 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:11:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 126894 states and 169254 transitions. [2019-09-07 23:11:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2019-09-07 23:11:58,334 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:11:58,335 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:11:58,335 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:11:58,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:11:58,336 INFO L82 PathProgramCache]: Analyzing trace with hash 499412362, now seen corresponding path program 1 times [2019-09-07 23:11:58,336 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:11:58,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:11:58,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:58,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:11:58,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:11:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 23:11:59,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:11:59,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:11:59,764 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:11:59,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:11:59,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:11:59,765 INFO L87 Difference]: Start difference. First operand 126894 states and 169254 transitions. Second operand 4 states. [2019-09-07 23:12:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:12:17,489 INFO L93 Difference]: Finished difference Result 297904 states and 405505 transitions. [2019-09-07 23:12:17,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:12:17,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 715 [2019-09-07 23:12:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:12:21,559 INFO L225 Difference]: With dead ends: 297904 [2019-09-07 23:12:21,559 INFO L226 Difference]: Without dead ends: 171016 [2019-09-07 23:12:21,686 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 23:12:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171016 states. [2019-09-07 23:12:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171016 to 161051. [2019-09-07 23:12:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161051 states. [2019-09-07 23:12:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161051 states to 161051 states and 212893 transitions. [2019-09-07 23:12:24,631 INFO L78 Accepts]: Start accepts. Automaton has 161051 states and 212893 transitions. Word has length 715 [2019-09-07 23:12:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:12:24,632 INFO L475 AbstractCegarLoop]: Abstraction has 161051 states and 212893 transitions. [2019-09-07 23:12:24,632 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:12:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 161051 states and 212893 transitions. [2019-09-07 23:12:24,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2019-09-07 23:12:24,667 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:12:24,668 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:24,668 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:12:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:12:24,669 INFO L82 PathProgramCache]: Analyzing trace with hash -457829483, now seen corresponding path program 1 times [2019-09-07 23:12:24,669 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:12:24,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:12:24,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:24,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:12:24,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:12:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 23:12:25,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:12:25,793 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 23:12:25,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:12:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:12:26,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:12:26,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:12:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 23:12:29,091 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:12:29,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:12:29,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:12:29,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:12:29,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:12:29,094 INFO L87 Difference]: Start difference. First operand 161051 states and 212893 transitions. Second operand 9 states. [2019-09-07 23:13:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:13:00,151 INFO L93 Difference]: Finished difference Result 377360 states and 532607 transitions. [2019-09-07 23:13:00,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-07 23:13:00,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 842 [2019-09-07 23:13:00,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:13:01,272 INFO L225 Difference]: With dead ends: 377360 [2019-09-07 23:13:01,272 INFO L226 Difference]: Without dead ends: 207666 [2019-09-07 23:13:01,439 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2019-09-07 23:13:01,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207666 states. [2019-09-07 23:13:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207666 to 199576. [2019-09-07 23:13:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199576 states. [2019-09-07 23:13:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199576 states to 199576 states and 253023 transitions. [2019-09-07 23:13:04,845 INFO L78 Accepts]: Start accepts. Automaton has 199576 states and 253023 transitions. Word has length 842 [2019-09-07 23:13:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:13:04,847 INFO L475 AbstractCegarLoop]: Abstraction has 199576 states and 253023 transitions. [2019-09-07 23:13:04,847 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:13:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 199576 states and 253023 transitions. [2019-09-07 23:13:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2019-09-07 23:13:04,872 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:13:04,873 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:04,874 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:13:04,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:13:04,874 INFO L82 PathProgramCache]: Analyzing trace with hash 433535339, now seen corresponding path program 1 times [2019-09-07 23:13:04,874 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:13:04,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:13:04,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:04,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:13:04,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 208 proven. 165 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2019-09-07 23:13:06,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:13:06,163 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 23:13:06,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:13:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:06,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:13:06,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:13:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2019-09-07 23:13:07,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:13:07,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:13:07,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:13:07,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:13:07,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:13:07,068 INFO L87 Difference]: Start difference. First operand 199576 states and 253023 transitions. Second operand 7 states. [2019-09-07 23:13:41,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:13:41,453 INFO L93 Difference]: Finished difference Result 486342 states and 672411 transitions. [2019-09-07 23:13:41,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 23:13:41,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 922 [2019-09-07 23:13:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:13:42,998 INFO L225 Difference]: With dead ends: 486342 [2019-09-07 23:13:42,999 INFO L226 Difference]: Without dead ends: 283805 [2019-09-07 23:13:43,209 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 927 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 23:13:43,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283805 states. [2019-09-07 23:13:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283805 to 283241. [2019-09-07 23:13:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283241 states. [2019-09-07 23:13:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283241 states to 283241 states and 386858 transitions. [2019-09-07 23:13:55,716 INFO L78 Accepts]: Start accepts. Automaton has 283241 states and 386858 transitions. Word has length 922 [2019-09-07 23:13:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:13:55,716 INFO L475 AbstractCegarLoop]: Abstraction has 283241 states and 386858 transitions. [2019-09-07 23:13:55,717 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:13:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 283241 states and 386858 transitions. [2019-09-07 23:13:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2019-09-07 23:13:55,746 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:13:55,747 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:13:55,747 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:13:55,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:13:55,748 INFO L82 PathProgramCache]: Analyzing trace with hash 585292210, now seen corresponding path program 1 times [2019-09-07 23:13:55,748 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:13:55,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:13:55,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:55,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:13:55,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 476 proven. 529 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2019-09-07 23:13:58,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:13:58,027 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 23:13:58,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:13:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:58,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:13:58,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:14:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 935 proven. 2 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2019-09-07 23:14:02,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:14:02,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-09-07 23:14:02,254 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 23:14:02,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 23:14:02,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 23:14:02,255 INFO L87 Difference]: Start difference. First operand 283241 states and 386858 transitions. Second operand 12 states. [2019-09-07 23:15:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:15:23,467 INFO L93 Difference]: Finished difference Result 852364 states and 1147436 transitions. [2019-09-07 23:15:23,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2019-09-07 23:15:23,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1086 [2019-09-07 23:15:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:25,161 INFO L225 Difference]: With dead ends: 852364 [2019-09-07 23:15:25,162 INFO L226 Difference]: Without dead ends: 561881 [2019-09-07 23:15:25,736 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1257 GetRequests, 1163 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3359 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1186, Invalid=7744, Unknown=0, NotChecked=0, Total=8930 [2019-09-07 23:15:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561881 states. [2019-09-07 23:15:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561881 to 524841. [2019-09-07 23:15:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524841 states. [2019-09-07 23:15:49,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524841 states to 524841 states and 637337 transitions. [2019-09-07 23:15:49,271 INFO L78 Accepts]: Start accepts. Automaton has 524841 states and 637337 transitions. Word has length 1086 [2019-09-07 23:15:49,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:49,272 INFO L475 AbstractCegarLoop]: Abstraction has 524841 states and 637337 transitions. [2019-09-07 23:15:49,272 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 23:15:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 524841 states and 637337 transitions. [2019-09-07 23:15:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2019-09-07 23:15:49,303 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:49,304 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:15:49,304 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:49,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1405603966, now seen corresponding path program 1 times [2019-09-07 23:15:49,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:49,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:49,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:49,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:49,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 475 proven. 265 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2019-09-07 23:15:52,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:15:52,693 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 23:15:52,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:53,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:15:53,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:15:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 1348 proven. 2 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2019-09-07 23:15:59,899 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:15:59,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:15:59,902 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:15:59,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:15:59,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:15:59,903 INFO L87 Difference]: Start difference. First operand 524841 states and 637337 transitions. Second operand 9 states. [2019-09-07 23:16:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:16:41,199 INFO L93 Difference]: Finished difference Result 1140841 states and 1451938 transitions. [2019-09-07 23:16:41,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 23:16:41,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1267 [2019-09-07 23:16:41,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:16:43,081 INFO L225 Difference]: With dead ends: 1140841 [2019-09-07 23:16:43,081 INFO L226 Difference]: Without dead ends: 612882 [2019-09-07 23:16:43,556 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1290 GetRequests, 1274 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:16:44,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612882 states. [2019-09-07 23:17:00,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612882 to 610263. [2019-09-07 23:17:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610263 states. [2019-09-07 23:17:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610263 states to 610263 states and 768607 transitions. [2019-09-07 23:17:14,276 INFO L78 Accepts]: Start accepts. Automaton has 610263 states and 768607 transitions. Word has length 1267 [2019-09-07 23:17:14,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:17:14,278 INFO L475 AbstractCegarLoop]: Abstraction has 610263 states and 768607 transitions. [2019-09-07 23:17:14,278 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:17:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 610263 states and 768607 transitions. [2019-09-07 23:17:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1451 [2019-09-07 23:17:14,319 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:17:14,320 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 23:17:14,321 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:17:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:17:14,321 INFO L82 PathProgramCache]: Analyzing trace with hash 888075836, now seen corresponding path program 1 times [2019-09-07 23:17:14,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:17:14,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:17:14,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:14,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:14,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 940 proven. 821 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2019-09-07 23:17:26,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:17:26,253 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 23:17:26,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:26,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 23:17:26,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:17:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 2164 proven. 10 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2019-09-07 23:17:27,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:17:27,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2019-09-07 23:17:27,639 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-07 23:17:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-07 23:17:27,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2019-09-07 23:17:27,640 INFO L87 Difference]: Start difference. First operand 610263 states and 768607 transitions. Second operand 20 states. [2019-09-07 23:19:20,563 WARN L188 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2019-09-07 23:19:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:19:53,703 INFO L93 Difference]: Finished difference Result 1755695 states and 2268523 transitions. [2019-09-07 23:19:53,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2019-09-07 23:19:53,703 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 1450 [2019-09-07 23:19:53,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:20:11,712 INFO L225 Difference]: With dead ends: 1755695 [2019-09-07 23:20:11,712 INFO L226 Difference]: Without dead ends: 1143992 [2019-09-07 23:20:12,804 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1881 GetRequests, 1637 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26110 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=6366, Invalid=53904, Unknown=0, NotChecked=0, Total=60270 [2019-09-07 23:20:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143992 states.