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/Problem12_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:08:37,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:08:37,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:08:37,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 19:08:37,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:08:37,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:08:37,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:08:37,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:08:37,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:08:37,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:08:37,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:08:37,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:08:37,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:08:37,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:08:37,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:08:37,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:08:37,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:08:37,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:08:37,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:08:37,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:08:37,561 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 19:08:37,575 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:08:37,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:08:37,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:08:37,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:08:37,577 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:08:37,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:08:37,577 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:08:37,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:08:37,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:08:37,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:08:37,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:08:37,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:08:37,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:08:37,579 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:08:37,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:08:37,579 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:08:37,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:08:37,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:08:37,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:08:37,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:08:37,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:08:37,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:08:37,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:08:37,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:08:37,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:08:37,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:08:37,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:08:37,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:08:37,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:08:37,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:08:37,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:08:37,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:08:37,627 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:08:37,628 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:08:37,629 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2019-09-07 19:08:37,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104e49e3e/e895587769af4fc2863f8da902e82c7f/FLAG008d0b897 [2019-09-07 19:08:38,507 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:08:38,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2019-09-07 19:08:38,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104e49e3e/e895587769af4fc2863f8da902e82c7f/FLAG008d0b897 [2019-09-07 19:08:39,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104e49e3e/e895587769af4fc2863f8da902e82c7f [2019-09-07 19:08:39,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:08:39,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:08:39,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:08:39,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:08:39,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:08:39,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:08:39" (1/1) ... [2019-09-07 19:08:39,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a46f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:39, skipping insertion in model container [2019-09-07 19:08:39,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:08:39" (1/1) ... [2019-09-07 19:08:39,065 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:08:39,229 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:08:40,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:08:40,529 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:08:41,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:08:41,222 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:08:41,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41 WrapperNode [2019-09-07 19:08:41,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:08:41,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:08:41,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:08:41,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:08:41,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41" (1/1) ... [2019-09-07 19:08:41,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41" (1/1) ... [2019-09-07 19:08:41,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41" (1/1) ... [2019-09-07 19:08:41,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41" (1/1) ... [2019-09-07 19:08:41,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41" (1/1) ... [2019-09-07 19:08:41,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41" (1/1) ... [2019-09-07 19:08:41,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41" (1/1) ... [2019-09-07 19:08:41,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:08:41,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:08:41,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:08:41,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:08:41,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41" (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 19:08:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:08:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:08:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:08:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:08:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:08:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:08:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:08:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:08:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:08:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:08:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:08:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:08:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:08:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:08:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:08:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:08:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:08:46,909 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:08:46,910 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:08:46,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:08:46 BoogieIcfgContainer [2019-09-07 19:08:46,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:08:46,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:08:46,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:08:46,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:08:46,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:08:39" (1/3) ... [2019-09-07 19:08:46,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed0c08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:08:46, skipping insertion in model container [2019-09-07 19:08:46,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:08:41" (2/3) ... [2019-09-07 19:08:46,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed0c08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:08:46, skipping insertion in model container [2019-09-07 19:08:46,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:08:46" (3/3) ... [2019-09-07 19:08:46,930 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2019-09-07 19:08:46,945 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:08:46,956 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:08:46,973 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:08:47,021 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:08:47,021 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:08:47,021 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:08:47,022 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:08:47,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:08:47,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:08:47,022 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:08:47,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:08:47,022 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:08:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-07 19:08:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-07 19:08:47,062 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:08:47,064 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:08:47,066 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:08:47,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:08:47,072 INFO L82 PathProgramCache]: Analyzing trace with hash 415981533, now seen corresponding path program 1 times [2019-09-07 19:08:47,074 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:08:47,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:08:47,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:08:47,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:08:47,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:08:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:08:47,299 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 19:08:47,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:08:47,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 19:08:47,307 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:08:47,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:08:47,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:08:47,324 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-07 19:08:54,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:08:54,562 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-09-07 19:08:54,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:08:54,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-07 19:08:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:08:54,624 INFO L225 Difference]: With dead ends: 2443 [2019-09-07 19:08:54,625 INFO L226 Difference]: Without dead ends: 1542 [2019-09-07 19:08:54,645 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:08:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-07 19:08:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-07 19:08:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-07 19:08:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2750 transitions. [2019-09-07 19:08:54,842 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2750 transitions. Word has length 16 [2019-09-07 19:08:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:08:54,843 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2750 transitions. [2019-09-07 19:08:54,843 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:08:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2750 transitions. [2019-09-07 19:08:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-07 19:08:54,850 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:08:54,851 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 19:08:54,851 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:08:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:08:54,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2020712631, now seen corresponding path program 1 times [2019-09-07 19:08:54,853 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:08:54,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:08:54,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:08:54,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:08:54,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:08:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:08:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:08:55,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:08:55,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:08:55,165 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:08:55,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:08:55,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:08:55,166 INFO L87 Difference]: Start difference. First operand 1542 states and 2750 transitions. Second operand 5 states. [2019-09-07 19:09:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:09:02,538 INFO L93 Difference]: Finished difference Result 4690 states and 8403 transitions. [2019-09-07 19:09:02,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:09:02,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2019-09-07 19:09:02,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:09:02,567 INFO L225 Difference]: With dead ends: 4690 [2019-09-07 19:09:02,567 INFO L226 Difference]: Without dead ends: 3154 [2019-09-07 19:09:02,572 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 19:09:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2019-09-07 19:09:02,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3122. [2019-09-07 19:09:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3122 states. [2019-09-07 19:09:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5336 transitions. [2019-09-07 19:09:02,696 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5336 transitions. Word has length 89 [2019-09-07 19:09:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:09:02,698 INFO L475 AbstractCegarLoop]: Abstraction has 3122 states and 5336 transitions. [2019-09-07 19:09:02,698 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:09:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5336 transitions. [2019-09-07 19:09:02,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-07 19:09:02,704 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:09:02,704 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 19:09:02,705 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:09:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:09:02,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1064331940, now seen corresponding path program 1 times [2019-09-07 19:09:02,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:09:02,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:09:02,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:02,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:02,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:09:02,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:09:02,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:09:02,840 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:09:02,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:09:02,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:09:02,840 INFO L87 Difference]: Start difference. First operand 3122 states and 5336 transitions. Second operand 5 states. [2019-09-07 19:09:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:09:10,450 INFO L93 Difference]: Finished difference Result 9473 states and 16409 transitions. [2019-09-07 19:09:10,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 19:09:10,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2019-09-07 19:09:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:09:10,504 INFO L225 Difference]: With dead ends: 9473 [2019-09-07 19:09:10,507 INFO L226 Difference]: Without dead ends: 6357 [2019-09-07 19:09:10,516 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:09:10,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2019-09-07 19:09:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 6318. [2019-09-07 19:09:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6318 states. [2019-09-07 19:09:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 9480 transitions. [2019-09-07 19:09:10,733 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 9480 transitions. Word has length 94 [2019-09-07 19:09:10,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:09:10,734 INFO L475 AbstractCegarLoop]: Abstraction has 6318 states and 9480 transitions. [2019-09-07 19:09:10,734 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:09:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 9480 transitions. [2019-09-07 19:09:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-07 19:09:10,736 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:09:10,737 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 19:09:10,737 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:09:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:09:10,738 INFO L82 PathProgramCache]: Analyzing trace with hash 187666708, now seen corresponding path program 1 times [2019-09-07 19:09:10,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:09:10,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:09:10,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:10,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:10,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:09:10,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:09:10,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:09:10,951 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:09:10,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:09:10,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:09:10,952 INFO L87 Difference]: Start difference. First operand 6318 states and 9480 transitions. Second operand 6 states. [2019-09-07 19:09:18,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:09:18,262 INFO L93 Difference]: Finished difference Result 15996 states and 24380 transitions. [2019-09-07 19:09:18,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:09:18,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2019-09-07 19:09:18,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:09:18,324 INFO L225 Difference]: With dead ends: 15996 [2019-09-07 19:09:18,324 INFO L226 Difference]: Without dead ends: 9684 [2019-09-07 19:09:18,342 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 19:09:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9684 states. [2019-09-07 19:09:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9684 to 9617. [2019-09-07 19:09:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9617 states. [2019-09-07 19:09:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9617 states to 9617 states and 13987 transitions. [2019-09-07 19:09:18,606 INFO L78 Accepts]: Start accepts. Automaton has 9617 states and 13987 transitions. Word has length 102 [2019-09-07 19:09:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:09:18,607 INFO L475 AbstractCegarLoop]: Abstraction has 9617 states and 13987 transitions. [2019-09-07 19:09:18,607 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:09:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 9617 states and 13987 transitions. [2019-09-07 19:09:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-07 19:09:18,615 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:09:18,616 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 19:09:18,616 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:09:18,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:09:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1287711656, now seen corresponding path program 1 times [2019-09-07 19:09:18,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:09:18,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:09:18,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:18,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:18,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:09:18,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:09:18,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:09:18,813 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:09:18,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:09:18,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:09:18,814 INFO L87 Difference]: Start difference. First operand 9617 states and 13987 transitions. Second operand 6 states. [2019-09-07 19:09:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:09:26,079 INFO L93 Difference]: Finished difference Result 22596 states and 33477 transitions. [2019-09-07 19:09:26,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:09:26,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-09-07 19:09:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:09:26,131 INFO L225 Difference]: With dead ends: 22596 [2019-09-07 19:09:26,131 INFO L226 Difference]: Without dead ends: 12985 [2019-09-07 19:09:26,155 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 19:09:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12985 states. [2019-09-07 19:09:26,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12985 to 12926. [2019-09-07 19:09:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12926 states. [2019-09-07 19:09:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12926 states to 12926 states and 17393 transitions. [2019-09-07 19:09:26,420 INFO L78 Accepts]: Start accepts. Automaton has 12926 states and 17393 transitions. Word has length 140 [2019-09-07 19:09:26,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:09:26,420 INFO L475 AbstractCegarLoop]: Abstraction has 12926 states and 17393 transitions. [2019-09-07 19:09:26,420 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:09:26,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12926 states and 17393 transitions. [2019-09-07 19:09:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-09-07 19:09:26,424 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:09:26,425 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:09:26,425 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:09:26,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:09:26,425 INFO L82 PathProgramCache]: Analyzing trace with hash -314043044, now seen corresponding path program 1 times [2019-09-07 19:09:26,426 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:09:26,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:09:26,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:26,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:26,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-07 19:09:26,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:09:26,606 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 19:09:26,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:26,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 19:09:26,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:09:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-09-07 19:09:26,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:09:26,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 19:09:26,863 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:09:26,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:09:26,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:09:26,865 INFO L87 Difference]: Start difference. First operand 12926 states and 17393 transitions. Second operand 7 states. [2019-09-07 19:09:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:09:35,263 INFO L93 Difference]: Finished difference Result 39033 states and 54550 transitions. [2019-09-07 19:09:35,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:09:35,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2019-09-07 19:09:35,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:09:35,424 INFO L225 Difference]: With dead ends: 39033 [2019-09-07 19:09:35,425 INFO L226 Difference]: Without dead ends: 26113 [2019-09-07 19:09:36,463 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-07 19:09:36,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26113 states. [2019-09-07 19:09:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26113 to 24375. [2019-09-07 19:09:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24375 states. [2019-09-07 19:09:37,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24375 states to 24375 states and 31946 transitions. [2019-09-07 19:09:37,126 INFO L78 Accepts]: Start accepts. Automaton has 24375 states and 31946 transitions. Word has length 177 [2019-09-07 19:09:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:09:37,128 INFO L475 AbstractCegarLoop]: Abstraction has 24375 states and 31946 transitions. [2019-09-07 19:09:37,132 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:09:37,133 INFO L276 IsEmpty]: Start isEmpty. Operand 24375 states and 31946 transitions. [2019-09-07 19:09:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-09-07 19:09:37,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:09:37,136 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 19:09:37,137 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:09:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:09:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash 466721771, now seen corresponding path program 1 times [2019-09-07 19:09:37,147 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:09:37,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:09:37,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:37,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:37,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:37,365 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 18 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:09:37,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:09:37,366 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:09:37,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:09:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:37,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:09:37,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:09:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 19:09:37,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:09:37,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:09:37,603 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:09:37,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:09:37,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:09:37,604 INFO L87 Difference]: Start difference. First operand 24375 states and 31946 transitions. Second operand 9 states. [2019-09-07 19:09:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:09:48,474 INFO L93 Difference]: Finished difference Result 60358 states and 81293 transitions. [2019-09-07 19:09:48,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:09:48,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 204 [2019-09-07 19:09:48,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:09:48,603 INFO L225 Difference]: With dead ends: 60358 [2019-09-07 19:09:48,603 INFO L226 Difference]: Without dead ends: 35989 [2019-09-07 19:09:48,647 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:09:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35989 states. [2019-09-07 19:09:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35989 to 34986. [2019-09-07 19:09:49,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34986 states. [2019-09-07 19:09:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34986 states to 34986 states and 44472 transitions. [2019-09-07 19:09:49,395 INFO L78 Accepts]: Start accepts. Automaton has 34986 states and 44472 transitions. Word has length 204 [2019-09-07 19:09:49,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:09:49,396 INFO L475 AbstractCegarLoop]: Abstraction has 34986 states and 44472 transitions. [2019-09-07 19:09:49,396 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:09:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 34986 states and 44472 transitions. [2019-09-07 19:09:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-09-07 19:09:49,399 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:09:49,400 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:49,400 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:09:49,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:09:49,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1386223986, now seen corresponding path program 1 times [2019-09-07 19:09:49,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:09:49,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:09:49,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:49,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:49,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 19:09:49,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:09:49,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:09:49,556 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:09:49,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:09:49,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:09:49,557 INFO L87 Difference]: Start difference. First operand 34986 states and 44472 transitions. Second operand 4 states. [2019-09-07 19:09:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:09:57,076 INFO L93 Difference]: Finished difference Result 82443 states and 104583 transitions. [2019-09-07 19:09:57,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:09:57,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 237 [2019-09-07 19:09:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:09:57,223 INFO L225 Difference]: With dead ends: 82443 [2019-09-07 19:09:57,223 INFO L226 Difference]: Without dead ends: 42529 [2019-09-07 19:09:57,302 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 19:09:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42529 states. [2019-09-07 19:09:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42529 to 42495. [2019-09-07 19:09:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42495 states. [2019-09-07 19:09:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42495 states to 42495 states and 49474 transitions. [2019-09-07 19:09:58,217 INFO L78 Accepts]: Start accepts. Automaton has 42495 states and 49474 transitions. Word has length 237 [2019-09-07 19:09:58,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:09:58,218 INFO L475 AbstractCegarLoop]: Abstraction has 42495 states and 49474 transitions. [2019-09-07 19:09:58,218 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:09:58,219 INFO L276 IsEmpty]: Start isEmpty. Operand 42495 states and 49474 transitions. [2019-09-07 19:09:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-09-07 19:09:58,226 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:09:58,226 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:58,227 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:09:58,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:09:58,227 INFO L82 PathProgramCache]: Analyzing trace with hash -953864319, now seen corresponding path program 1 times [2019-09-07 19:09:58,228 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:09:58,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:09:58,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:58,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:58,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 172 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 19:09:58,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:09:58,535 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 19:09:58,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:58,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:09:58,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:09:58,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:09:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-09-07 19:09:58,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:09:58,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 19:09:58,944 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 19:09:58,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 19:09:58,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-07 19:09:58,945 INFO L87 Difference]: Start difference. First operand 42495 states and 49474 transitions. Second operand 10 states. [2019-09-07 19:10:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:10:26,381 INFO L93 Difference]: Finished difference Result 121470 states and 147502 transitions. [2019-09-07 19:10:26,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-09-07 19:10:26,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 309 [2019-09-07 19:10:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:10:26,629 INFO L225 Difference]: With dead ends: 121470 [2019-09-07 19:10:26,629 INFO L226 Difference]: Without dead ends: 79748 [2019-09-07 19:10:26,691 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=298, Invalid=1682, Unknown=0, NotChecked=0, Total=1980 [2019-09-07 19:10:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79748 states. [2019-09-07 19:10:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79748 to 79417. [2019-09-07 19:10:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79417 states. [2019-09-07 19:10:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79417 states to 79417 states and 93652 transitions. [2019-09-07 19:10:29,963 INFO L78 Accepts]: Start accepts. Automaton has 79417 states and 93652 transitions. Word has length 309 [2019-09-07 19:10:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:10:29,964 INFO L475 AbstractCegarLoop]: Abstraction has 79417 states and 93652 transitions. [2019-09-07 19:10:29,964 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 19:10:29,964 INFO L276 IsEmpty]: Start isEmpty. Operand 79417 states and 93652 transitions. [2019-09-07 19:10:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2019-09-07 19:10:29,983 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:10:29,984 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:10:29,984 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:10:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:10:29,985 INFO L82 PathProgramCache]: Analyzing trace with hash -2141030388, now seen corresponding path program 1 times [2019-09-07 19:10:29,985 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:10:29,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:10:29,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:10:29,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:10:29,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:10:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:10:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-09-07 19:10:30,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:10:30,420 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) [2019-09-07 19:10:30,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:10:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:10:30,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:10:30,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:10:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-09-07 19:10:30,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:10:30,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:10:30,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:10:30,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:10:30,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:10:30,726 INFO L87 Difference]: Start difference. First operand 79417 states and 93652 transitions. Second operand 9 states. [2019-09-07 19:10:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:10:44,876 INFO L93 Difference]: Finished difference Result 270578 states and 339819 transitions. [2019-09-07 19:10:44,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:10:44,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 396 [2019-09-07 19:10:44,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:10:45,982 INFO L225 Difference]: With dead ends: 270578 [2019-09-07 19:10:45,982 INFO L226 Difference]: Without dead ends: 191934 [2019-09-07 19:10:46,096 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:10:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191934 states. [2019-09-07 19:10:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191934 to 187981. [2019-09-07 19:10:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187981 states. [2019-09-07 19:10:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187981 states to 187981 states and 226435 transitions. [2019-09-07 19:10:52,940 INFO L78 Accepts]: Start accepts. Automaton has 187981 states and 226435 transitions. Word has length 396 [2019-09-07 19:10:52,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:10:52,941 INFO L475 AbstractCegarLoop]: Abstraction has 187981 states and 226435 transitions. [2019-09-07 19:10:52,941 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:10:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 187981 states and 226435 transitions. [2019-09-07 19:10:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2019-09-07 19:10:52,955 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:10:52,955 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:10:52,955 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:10:52,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:10:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash -858750725, now seen corresponding path program 1 times [2019-09-07 19:10:52,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:10:52,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:10:52,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:10:52,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:10:52,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:10:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:10:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 119 proven. 90 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2019-09-07 19:10:53,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:10:53,297 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:10:53,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:10:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:10:53,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:10:53,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:10:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 19:10:53,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:10:53,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:10:53,691 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:10:53,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:10:53,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:10:53,692 INFO L87 Difference]: Start difference. First operand 187981 states and 226435 transitions. Second operand 9 states. [2019-09-07 19:11:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:11:05,076 INFO L93 Difference]: Finished difference Result 378941 states and 463285 transitions. [2019-09-07 19:11:05,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:11:05,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 403 [2019-09-07 19:11:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:11:05,626 INFO L225 Difference]: With dead ends: 378941 [2019-09-07 19:11:05,626 INFO L226 Difference]: Without dead ends: 191733 [2019-09-07 19:11:05,828 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:11:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191733 states. [2019-09-07 19:11:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191733 to 191105. [2019-09-07 19:11:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191105 states. [2019-09-07 19:11:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191105 states to 191105 states and 226449 transitions. [2019-09-07 19:11:13,063 INFO L78 Accepts]: Start accepts. Automaton has 191105 states and 226449 transitions. Word has length 403 [2019-09-07 19:11:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:11:13,063 INFO L475 AbstractCegarLoop]: Abstraction has 191105 states and 226449 transitions. [2019-09-07 19:11:13,064 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:11:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 191105 states and 226449 transitions. [2019-09-07 19:11:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2019-09-07 19:11:13,086 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:11:13,086 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:13,086 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:11:13,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:11:13,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1604987055, now seen corresponding path program 1 times [2019-09-07 19:11:13,087 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:11:13,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:11:13,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:11:13,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:11:13,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:11:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:11:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 165 proven. 263 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-09-07 19:11:13,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:11:13,720 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 19:11:14,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:11:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:11:14,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:11:14,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:11:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-09-07 19:11:14,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:11:14,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 19:11:14,787 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 19:11:14,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 19:11:14,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:11:14,788 INFO L87 Difference]: Start difference. First operand 191105 states and 226449 transitions. Second operand 11 states. [2019-09-07 19:11:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:11:36,017 INFO L93 Difference]: Finished difference Result 413011 states and 491227 transitions. [2019-09-07 19:11:36,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 19:11:36,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 484 [2019-09-07 19:11:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:11:36,636 INFO L225 Difference]: With dead ends: 413011 [2019-09-07 19:11:36,636 INFO L226 Difference]: Without dead ends: 222679 [2019-09-07 19:11:36,858 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 494 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2019-09-07 19:11:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222679 states. [2019-09-07 19:11:39,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222679 to 217031. [2019-09-07 19:11:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217031 states. [2019-09-07 19:11:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217031 states to 217031 states and 242494 transitions. [2019-09-07 19:11:39,721 INFO L78 Accepts]: Start accepts. Automaton has 217031 states and 242494 transitions. Word has length 484 [2019-09-07 19:11:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:11:39,721 INFO L475 AbstractCegarLoop]: Abstraction has 217031 states and 242494 transitions. [2019-09-07 19:11:39,721 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 19:11:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 217031 states and 242494 transitions. [2019-09-07 19:11:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2019-09-07 19:11:39,753 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:11:39,754 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:39,754 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:11:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:11:39,754 INFO L82 PathProgramCache]: Analyzing trace with hash 569372019, now seen corresponding path program 1 times [2019-09-07 19:11:39,755 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:11:39,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:11:39,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:11:39,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:11:39,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:11:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:11:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 315 proven. 72 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2019-09-07 19:11:40,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:11:40,251 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:11:40,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:11:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:11:41,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:11:41,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:11:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 513 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-09-07 19:11:41,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:11:41,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:11:41,579 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:11:41,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:11:41,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:11:41,579 INFO L87 Difference]: Start difference. First operand 217031 states and 242494 transitions. Second operand 9 states. [2019-09-07 19:11:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:11:54,942 INFO L93 Difference]: Finished difference Result 435678 states and 487496 transitions. [2019-09-07 19:11:54,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 19:11:54,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 562 [2019-09-07 19:11:54,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:11:55,409 INFO L225 Difference]: With dead ends: 435678 [2019-09-07 19:11:55,409 INFO L226 Difference]: Without dead ends: 218629 [2019-09-07 19:11:55,620 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-09-07 19:11:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218629 states. [2019-09-07 19:11:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218629 to 196192. [2019-09-07 19:11:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196192 states. [2019-09-07 19:11:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196192 states to 196192 states and 210266 transitions. [2019-09-07 19:11:58,082 INFO L78 Accepts]: Start accepts. Automaton has 196192 states and 210266 transitions. Word has length 562 [2019-09-07 19:11:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:11:58,083 INFO L475 AbstractCegarLoop]: Abstraction has 196192 states and 210266 transitions. [2019-09-07 19:11:58,084 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:11:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 196192 states and 210266 transitions. [2019-09-07 19:11:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2019-09-07 19:11:58,105 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:11:58,106 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 19:11:58,106 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:11:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:11:58,106 INFO L82 PathProgramCache]: Analyzing trace with hash -156908434, now seen corresponding path program 1 times [2019-09-07 19:11:58,107 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:11:58,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:11:58,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:11:58,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:11:58,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:11:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:11:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2019-09-07 19:11:58,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:11:58,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 19:11:58,412 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:11:58,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:11:58,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:11:58,413 INFO L87 Difference]: Start difference. First operand 196192 states and 210266 transitions. Second operand 3 states. [2019-09-07 19:12:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:12:05,093 INFO L93 Difference]: Finished difference Result 390823 states and 418855 transitions. [2019-09-07 19:12:05,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:12:05,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 598 [2019-09-07 19:12:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:12:05,464 INFO L225 Difference]: With dead ends: 390823 [2019-09-07 19:12:05,464 INFO L226 Difference]: Without dead ends: 194635 [2019-09-07 19:12:05,661 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:12:05,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194635 states. [2019-09-07 19:12:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194635 to 194533. [2019-09-07 19:12:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194533 states. [2019-09-07 19:12:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194533 states to 194533 states and 207507 transitions. [2019-09-07 19:12:11,562 INFO L78 Accepts]: Start accepts. Automaton has 194533 states and 207507 transitions. Word has length 598 [2019-09-07 19:12:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:12:11,563 INFO L475 AbstractCegarLoop]: Abstraction has 194533 states and 207507 transitions. [2019-09-07 19:12:11,563 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:12:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 194533 states and 207507 transitions. [2019-09-07 19:12:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2019-09-07 19:12:11,584 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:12:11,585 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:11,585 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:12:11,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:12:11,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1485760289, now seen corresponding path program 1 times [2019-09-07 19:12:11,586 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:12:11,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:12:11,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:11,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:11,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 343 proven. 72 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2019-09-07 19:12:13,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:12:13,649 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:12:13,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:13,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:12:13,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:12:13,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:12:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 601 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-09-07 19:12:14,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:12:14,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 19:12:14,325 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 19:12:14,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 19:12:14,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:12:14,326 INFO L87 Difference]: Start difference. First operand 194533 states and 207507 transitions. Second operand 13 states. [2019-09-07 19:12:14,459 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-09-07 19:12:15,343 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-07 19:12:16,495 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-07 19:12:16,832 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-07 19:12:21,542 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-07 19:12:22,040 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-07 19:12:22,880 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2019-09-07 19:12:23,023 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2019-09-07 19:12:24,009 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-07 19:12:24,329 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-09-07 19:12:24,673 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-07 19:12:25,869 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-07 19:12:26,710 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-07 19:12:29,736 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2019-09-07 19:12:35,342 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2019-09-07 19:12:35,984 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-07 19:12:37,134 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2019-09-07 19:12:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:12:40,320 INFO L93 Difference]: Finished difference Result 388816 states and 415066 transitions. [2019-09-07 19:12:40,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-09-07 19:12:40,321 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 660 [2019-09-07 19:12:40,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:12:40,724 INFO L225 Difference]: With dead ends: 388816 [2019-09-07 19:12:40,724 INFO L226 Difference]: Without dead ends: 195056 [2019-09-07 19:12:40,917 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=903, Invalid=3003, Unknown=0, NotChecked=0, Total=3906 [2019-09-07 19:12:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195056 states. [2019-09-07 19:12:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195056 to 192275. [2019-09-07 19:12:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192275 states. [2019-09-07 19:12:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192275 states to 192275 states and 205034 transitions. [2019-09-07 19:12:43,471 INFO L78 Accepts]: Start accepts. Automaton has 192275 states and 205034 transitions. Word has length 660 [2019-09-07 19:12:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:12:43,471 INFO L475 AbstractCegarLoop]: Abstraction has 192275 states and 205034 transitions. [2019-09-07 19:12:43,472 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 19:12:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 192275 states and 205034 transitions. [2019-09-07 19:12:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2019-09-07 19:12:43,498 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:12:43,499 INFO L399 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 19:12:43,499 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:12:43,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:12:43,499 INFO L82 PathProgramCache]: Analyzing trace with hash 256971091, now seen corresponding path program 1 times [2019-09-07 19:12:43,499 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:12:43,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:12:43,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:43,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:43,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 515 proven. 8 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2019-09-07 19:12:44,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:12:44,819 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:12:44,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:45,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:12:45,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:12:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-09-07 19:12:45,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:12:45,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-07 19:12:45,379 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:12:45,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:12:45,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:12:45,380 INFO L87 Difference]: Start difference. First operand 192275 states and 205034 transitions. Second operand 4 states. [2019-09-07 19:12:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:12:53,702 INFO L93 Difference]: Finished difference Result 403157 states and 432694 transitions. [2019-09-07 19:12:53,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 19:12:53,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 665 [2019-09-07 19:12:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:12:54,209 INFO L225 Difference]: With dead ends: 403157 [2019-09-07 19:12:54,209 INFO L226 Difference]: Without dead ends: 211655 [2019-09-07 19:12:54,409 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 668 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:12:54,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211655 states. [2019-09-07 19:12:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211655 to 206718. [2019-09-07 19:12:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206718 states. [2019-09-07 19:12:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206718 states to 206718 states and 219432 transitions. [2019-09-07 19:12:57,651 INFO L78 Accepts]: Start accepts. Automaton has 206718 states and 219432 transitions. Word has length 665 [2019-09-07 19:12:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:12:57,651 INFO L475 AbstractCegarLoop]: Abstraction has 206718 states and 219432 transitions. [2019-09-07 19:12:57,651 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:12:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 206718 states and 219432 transitions. [2019-09-07 19:12:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2019-09-07 19:12:57,667 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:12:57,667 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:57,668 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:12:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:12:57,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1272262379, now seen corresponding path program 1 times [2019-09-07 19:12:57,668 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:12:57,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:12:57,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:57,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:12:57,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:12:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:12:58,333 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-07 19:12:58,478 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2019-09-07 19:12:58,636 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-07 19:13:02,378 WARN L188 SmtUtils]: Spent 3.72 s on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-07 19:13:02,559 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-07 19:13:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 50 proven. 507 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-09-07 19:13:05,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:13:05,045 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:13:05,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:13:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:13:05,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:13:05,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:13:05,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:05,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:08,247 WARN L188 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 113 DAG size of output: 27 [2019-09-07 19:13:08,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:13:08,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:13:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 543 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-09-07 19:13:08,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:13:08,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 5] total 23 [2019-09-07 19:13:08,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-07 19:13:08,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-07 19:13:08,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2019-09-07 19:13:08,751 INFO L87 Difference]: Start difference. First operand 206718 states and 219432 transitions. Second operand 23 states. [2019-09-07 19:13:10,290 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2019-09-07 19:13:10,480 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-07 19:13:12,589 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-07 19:13:12,998 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-07 19:13:13,831 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-07 19:13:15,151 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2019-09-07 19:13:16,244 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2019-09-07 19:13:16,523 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-07 19:13:17,215 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-07 19:13:17,578 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-07 19:13:18,088 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-07 19:13:18,594 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-07 19:13:19,222 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-09-07 19:13:19,769 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2019-09-07 19:13:20,294 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-07 19:13:20,789 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-09-07 19:13:21,246 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-09-07 19:13:21,510 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2019-09-07 19:13:22,044 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-07 19:13:22,432 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-07 19:13:23,117 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2019-09-07 19:13:23,386 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-09-07 19:13:23,968 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2019-09-07 19:13:24,313 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2019-09-07 19:13:24,815 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-07 19:13:25,642 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-07 19:13:26,847 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-07 19:13:27,138 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2019-09-07 19:13:27,707 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-07 19:13:28,000 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-07 19:13:28,180 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-07 19:13:28,762 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-07 19:13:29,207 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-07 19:13:29,489 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-07 19:13:29,864 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2019-09-07 19:13:30,072 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2019-09-07 19:13:30,497 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-07 19:13:30,738 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-07 19:13:31,234 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-07 19:13:31,526 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-07 19:13:31,752 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2019-09-07 19:13:32,143 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-07 19:13:32,631 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-07 19:13:32,874 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-07 19:13:33,523 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-09-07 19:13:33,777 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-07 19:13:34,010 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-07 19:13:34,351 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-07 19:13:34,892 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2019-09-07 19:13:35,103 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-07 19:13:35,798 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-07 19:13:36,312 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-07 19:13:37,123 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2019-09-07 19:13:37,421 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2019-09-07 19:13:37,766 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2019-09-07 19:13:37,930 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-07 19:13:38,421 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2019-09-07 19:13:38,789 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-07 19:13:39,214 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-07 19:13:39,470 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-07 19:13:39,760 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-07 19:13:41,096 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2019-09-07 19:13:41,509 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-07 19:13:41,845 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-07 19:13:42,663 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-07 19:13:42,880 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-09-07 19:13:43,472 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2019-09-07 19:13:43,799 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2019-09-07 19:13:44,675 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-07 19:13:44,890 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2019-09-07 19:13:45,408 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-07 19:13:45,649 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2019-09-07 19:13:45,952 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-07 19:13:46,553 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-07 19:13:46,957 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-07 19:13:48,668 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2019-09-07 19:13:48,957 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-07 19:13:49,816 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-09-07 19:13:50,008 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2019-09-07 19:13:50,309 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-07 19:13:50,711 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-07 19:13:51,281 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2019-09-07 19:13:51,635 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2019-09-07 19:13:51,856 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2019-09-07 19:13:52,357 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2019-09-07 19:13:52,609 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2019-09-07 19:13:52,904 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2019-09-07 19:13:53,294 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2019-09-07 19:13:53,533 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-07 19:13:53,701 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-07 19:13:53,990 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-07 19:13:54,666 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-07 19:13:54,923 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-07 19:13:55,430 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2019-09-07 19:13:55,738 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-07 19:13:56,006 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-09-07 19:13:56,236 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-07 19:13:56,508 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-07 19:13:56,890 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-07 19:13:57,184 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-09-07 19:13:57,431 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2019-09-07 19:13:57,683 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2019-09-07 19:13:58,851 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-07 19:13:59,161 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-07 19:13:59,966 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-07 19:14:00,267 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2019-09-07 19:14:00,509 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2019-09-07 19:14:00,969 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2019-09-07 19:14:01,156 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-07 19:14:01,385 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-07 19:14:01,691 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2019-09-07 19:14:02,237 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-07 19:14:03,289 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2019-09-07 19:14:03,580 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-07 19:14:04,511 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-07 19:14:04,661 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-07 19:14:05,422 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-07 19:14:06,261 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-07 19:14:06,654 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2019-09-07 19:14:06,929 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2019-09-07 19:14:07,134 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2019-09-07 19:14:07,305 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2019-09-07 19:14:08,461 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-07 19:14:09,176 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-07 19:14:09,491 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-07 19:14:09,776 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-07 19:14:10,042 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-07 19:14:10,199 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2019-09-07 19:14:10,404 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-07 19:14:10,600 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2019-09-07 19:14:11,894 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2019-09-07 19:14:12,700 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2019-09-07 19:14:12,901 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2019-09-07 19:14:13,515 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2019-09-07 19:14:13,830 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2019-09-07 19:14:14,309 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2019-09-07 19:14:14,542 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2019-09-07 19:14:14,860 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-07 19:14:15,265 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-07 19:14:16,351 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-07 19:14:16,580 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-09-07 19:14:16,824 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2019-09-07 19:14:17,281 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-07 19:14:17,725 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-07 19:14:18,021 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-07 19:14:18,656 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2019-09-07 19:14:18,969 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2019-09-07 19:14:19,370 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-07 19:14:19,563 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2019-09-07 19:14:20,904 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-07 19:14:21,467 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-07 19:14:22,046 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-07 19:14:22,772 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2019-09-07 19:14:23,020 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2019-09-07 19:14:23,201 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2019-09-07 19:14:24,103 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-09-07 19:14:24,541 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-09-07 19:14:25,463 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2019-09-07 19:14:25,769 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2019-09-07 19:14:26,151 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-07 19:14:26,397 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-07 19:14:26,866 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-07 19:14:27,281 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2019-09-07 19:14:27,486 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2019-09-07 19:14:27,836 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-07 19:14:28,139 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-07 19:14:28,923 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2019-09-07 19:14:29,821 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-07 19:14:30,419 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-07 19:14:31,563 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2019-09-07 19:14:31,868 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2019-09-07 19:14:32,110 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-07 19:14:32,850 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-07 19:14:33,629 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2019-09-07 19:14:33,855 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2019-09-07 19:14:34,275 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2019-09-07 19:14:34,570 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-07 19:14:35,914 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-09-07 19:14:36,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:14:36,487 INFO L93 Difference]: Finished difference Result 428552 states and 457014 transitions. [2019-09-07 19:14:36,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 342 states. [2019-09-07 19:14:36,487 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 671 [2019-09-07 19:14:36,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:14:36,944 INFO L225 Difference]: With dead ends: 428552 [2019-09-07 19:14:36,945 INFO L226 Difference]: Without dead ends: 221015 [2019-09-07 19:14:37,092 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 841 SyntacticMatches, 1 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56088 ImplicationChecksByTransitivity, 55.8s TimeCoverageRelationStatistics Valid=11605, Invalid=114065, Unknown=0, NotChecked=0, Total=125670 [2019-09-07 19:14:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221015 states. [2019-09-07 19:14:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221015 to 217089. [2019-09-07 19:14:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217089 states. [2019-09-07 19:14:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217089 states to 217089 states and 229249 transitions. [2019-09-07 19:14:40,719 INFO L78 Accepts]: Start accepts. Automaton has 217089 states and 229249 transitions. Word has length 671 [2019-09-07 19:14:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:14:40,720 INFO L475 AbstractCegarLoop]: Abstraction has 217089 states and 229249 transitions. [2019-09-07 19:14:40,720 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-07 19:14:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 217089 states and 229249 transitions. [2019-09-07 19:14:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2019-09-07 19:14:40,732 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:14:40,733 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 19:14:40,733 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:14:40,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:14:40,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1366469283, now seen corresponding path program 1 times [2019-09-07 19:14:40,734 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:14:40,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:14:40,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:40,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:14:40,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:14:41,572 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-07 19:14:41,721 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-07 19:14:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 50 proven. 511 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-09-07 19:14:45,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:14:45,039 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:14:45,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:14:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:14:45,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:14:45,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:14:45,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:14:45,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:14:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-09-07 19:14:45,766 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:14:45,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 5] total 23 [2019-09-07 19:14:45,767 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-07 19:14:45,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-07 19:14:45,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2019-09-07 19:14:45,768 INFO L87 Difference]: Start difference. First operand 217089 states and 229249 transitions. Second operand 23 states. [2019-09-07 19:14:47,351 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2019-09-07 19:14:50,313 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2019-09-07 19:14:52,434 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-07 19:14:53,065 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-07 19:14:53,708 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-07 19:14:53,960 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-07 19:14:54,783 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-07 19:14:55,698 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-07 19:14:56,130 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-07 19:14:56,812 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2019-09-07 19:14:57,100 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2019-09-07 19:14:57,509 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-07 19:14:58,125 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-07 19:14:58,933 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2019-09-07 19:14:59,476 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-07 19:15:00,791 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-07 19:15:01,772 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-07 19:15:02,110 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2019-09-07 19:15:03,289 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-07 19:15:03,742 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2019-09-07 19:15:04,257 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-09-07 19:15:05,197 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-07 19:15:05,598 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-07 19:15:06,433 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2019-09-07 19:15:07,024 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-07 19:15:07,616 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-07 19:15:09,035 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-07 19:15:09,701 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-07 19:15:09,969 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-07 19:15:10,189 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2019-09-07 19:15:10,547 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2019-09-07 19:15:11,164 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-07 19:15:11,834 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2019-09-07 19:15:12,100 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-07 19:15:13,056 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-07 19:15:14,149 WARN L188 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-07 19:15:14,404 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-09-07 19:15:15,275 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-07 19:15:15,630 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-09-07 19:15:15,969 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-07 19:15:16,161 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2019-09-07 19:15:16,634 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2019-09-07 19:15:17,042 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2019-09-07 19:15:17,356 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-07 19:15:17,633 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2019-09-07 19:15:17,900 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-07 19:15:19,100 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-07 19:15:19,549 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-09-07 19:15:20,502 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2019-09-07 19:15:20,695 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-07 19:15:20,936 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-07 19:15:22,304 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-07 19:15:22,641 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-07 19:15:22,938 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-07 19:15:23,339 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-07 19:15:24,686 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-07 19:15:24,940 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-07 19:15:25,131 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-07 19:15:25,609 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-07 19:15:25,787 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-07 19:15:25,951 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-07 19:15:26,614 WARN L188 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2019-09-07 19:15:27,088 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2019-09-07 19:15:28,373 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2019-09-07 19:15:28,584 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-07 19:15:28,925 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-07 19:15:29,075 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-07 19:15:29,254 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-07 19:15:29,790 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-07 19:15:31,194 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-09-07 19:15:31,547 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-07 19:15:31,744 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-07 19:15:31,967 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-07 19:15:32,492 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-07 19:15:32,686 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-07 19:15:33,075 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-09-07 19:15:33,265 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-07 19:15:33,510 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-07 19:15:33,838 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-07 19:15:34,346 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2019-09-07 19:15:34,576 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2019-09-07 19:15:35,932 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-07 19:15:36,657 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-09-07 19:15:38,810 WARN L188 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2019-09-07 19:15:39,084 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-07 19:15:39,380 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-07 19:15:39,838 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-07 19:15:40,634 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2019-09-07 19:15:40,992 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-07 19:15:41,347 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-07 19:15:41,484 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-07 19:15:41,755 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-07 19:15:42,659 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2019-09-07 19:15:43,233 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-07 19:15:43,484 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-07 19:15:45,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:45,923 INFO L93 Difference]: Finished difference Result 436390 states and 468267 transitions. [2019-09-07 19:15:45,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2019-09-07 19:15:45,924 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 675 [2019-09-07 19:15:45,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:46,602 INFO L225 Difference]: With dead ends: 436390 [2019-09-07 19:15:46,603 INFO L226 Difference]: Without dead ends: 219279 [2019-09-07 19:15:46,802 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21957 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=5930, Invalid=47200, Unknown=0, NotChecked=0, Total=53130 [2019-09-07 19:15:46,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219279 states. [2019-09-07 19:15:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219279 to 217098. [2019-09-07 19:15:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217098 states. [2019-09-07 19:15:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217098 states to 217098 states and 228976 transitions. [2019-09-07 19:15:51,440 INFO L78 Accepts]: Start accepts. Automaton has 217098 states and 228976 transitions. Word has length 675 [2019-09-07 19:15:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:51,440 INFO L475 AbstractCegarLoop]: Abstraction has 217098 states and 228976 transitions. [2019-09-07 19:15:51,440 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-07 19:15:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 217098 states and 228976 transitions. [2019-09-07 19:15:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2019-09-07 19:15:51,464 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:51,464 INFO L399 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 19:15:51,465 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:51,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:51,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2095005581, now seen corresponding path program 1 times [2019-09-07 19:15:51,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:51,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:51,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:51,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:51,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 632 proven. 682 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2019-09-07 19:15:54,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:15:54,480 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:15:54,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:54,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:15:54,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:15:54,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:15:54,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:15:54,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:15:54,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:15:54,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:15:54,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:15:54,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:15:55,120 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 24 [2019-09-07 19:15:55,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:15:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 907 proven. 2 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2019-09-07 19:15:55,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:15:55,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5] total 21 [2019-09-07 19:15:55,963 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-07 19:15:55,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-07 19:15:55,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2019-09-07 19:15:55,964 INFO L87 Difference]: Start difference. First operand 217098 states and 228976 transitions. Second operand 21 states. [2019-09-07 19:15:57,467 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-07 19:15:59,846 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2019-09-07 19:16:00,649 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-07 19:16:00,838 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-07 19:16:03,373 WARN L188 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2019-09-07 19:16:05,004 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-07 19:16:07,208 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2019-09-07 19:16:08,551 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-09-07 19:16:18,331 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-07 19:16:19,684 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-07 19:16:21,337 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2019-09-07 19:16:21,786 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-07 19:16:21,931 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-09-07 19:16:22,197 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-07 19:16:22,923 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-07 19:16:24,086 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-09-07 19:16:24,648 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2019-09-07 19:16:27,743 WARN L188 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-07 19:16:31,649 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2019-09-07 19:16:34,500 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-07 19:16:34,884 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-07 19:16:35,366 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2019-09-07 19:16:35,682 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2019-09-07 19:16:37,245 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-07 19:16:37,941 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-07 19:16:38,199 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-07 19:16:38,585 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-07 19:16:40,546 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2019-09-07 19:16:41,010 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-07 19:16:42,753 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-09-07 19:16:43,122 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-07 19:16:43,687 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-07 19:16:44,606 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 25 [2019-09-07 19:16:45,819 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-07 19:16:46,632 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-09-07 19:16:48,108 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-07 19:16:48,479 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-07 19:16:48,962 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2019-09-07 19:16:49,166 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-07 19:16:50,132 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2019-09-07 19:16:51,007 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2019-09-07 19:16:52,018 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-07 19:16:52,276 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-09-07 19:16:52,717 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2019-09-07 19:16:54,629 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2019-09-07 19:16:55,024 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2019-09-07 19:16:55,710 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2019-09-07 19:16:55,920 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-07 19:16:56,546 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2019-09-07 19:16:56,978 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2019-09-07 19:16:57,650 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-07 19:16:58,494 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-09-07 19:16:59,067 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-07 19:17:01,184 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-07 19:17:01,631 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2019-09-07 19:17:02,605 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-07 19:17:03,945 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-07 19:17:05,195 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2019-09-07 19:17:07,448 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2019-09-07 19:17:12,172 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-07 19:17:14,229 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-07 19:17:17,181 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-09-07 19:17:17,536 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2019-09-07 19:17:18,268 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2019-09-07 19:17:19,628 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2019-09-07 19:17:21,826 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2019-09-07 19:17:22,674 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-07 19:17:25,598 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-09-07 19:17:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:17:37,111 INFO L93 Difference]: Finished difference Result 499454 states and 530952 transitions. [2019-09-07 19:17:37,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2019-09-07 19:17:37,111 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 748 [2019-09-07 19:17:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:17:37,706 INFO L225 Difference]: With dead ends: 499454 [2019-09-07 19:17:37,707 INFO L226 Difference]: Without dead ends: 282360 [2019-09-07 19:17:37,842 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1208 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27972 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=6803, Invalid=58477, Unknown=0, NotChecked=0, Total=65280 [2019-09-07 19:17:38,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282360 states. [2019-09-07 19:17:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282360 to 281030. [2019-09-07 19:17:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281030 states. [2019-09-07 19:17:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281030 states to 281030 states and 296786 transitions. [2019-09-07 19:17:41,342 INFO L78 Accepts]: Start accepts. Automaton has 281030 states and 296786 transitions. Word has length 748 [2019-09-07 19:17:41,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:17:41,343 INFO L475 AbstractCegarLoop]: Abstraction has 281030 states and 296786 transitions. [2019-09-07 19:17:41,343 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-07 19:17:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 281030 states and 296786 transitions. [2019-09-07 19:17:41,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2019-09-07 19:17:41,370 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:17:41,371 INFO L399 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 19:17:41,371 INFO L418 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:17:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:17:41,372 INFO L82 PathProgramCache]: Analyzing trace with hash 94667322, now seen corresponding path program 1 times [2019-09-07 19:17:41,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:17:41,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:17:41,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:41,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:17:41,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 272 proven. 584 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2019-09-07 19:17:43,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:17:43,077 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:17:43,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:17:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:43,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:17:43,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:17:43,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:17:43,670 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 31 [2019-09-07 19:17:43,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:17:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2019-09-07 19:17:44,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:17:44,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-09-07 19:17:44,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:17:44,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:17:44,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:17:44,887 INFO L87 Difference]: Start difference. First operand 281030 states and 296786 transitions. Second operand 12 states. [2019-09-07 19:18:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:18:36,504 INFO L93 Difference]: Finished difference Result 655537 states and 704171 transitions. [2019-09-07 19:18:36,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-09-07 19:18:36,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 759 [2019-09-07 19:18:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:18:37,688 INFO L225 Difference]: With dead ends: 655537 [2019-09-07 19:18:37,688 INFO L226 Difference]: Without dead ends: 375267 [2019-09-07 19:18:38,539 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=652, Invalid=3380, Unknown=0, NotChecked=0, Total=4032 [2019-09-07 19:18:38,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375267 states. [2019-09-07 19:18:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375267 to 349381. [2019-09-07 19:18:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349381 states. [2019-09-07 19:18:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349381 states to 349381 states and 369534 transitions. [2019-09-07 19:18:49,926 INFO L78 Accepts]: Start accepts. Automaton has 349381 states and 369534 transitions. Word has length 759 [2019-09-07 19:18:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:18:49,927 INFO L475 AbstractCegarLoop]: Abstraction has 349381 states and 369534 transitions. [2019-09-07 19:18:49,927 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 19:18:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 349381 states and 369534 transitions. [2019-09-07 19:18:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2019-09-07 19:18:49,954 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:18:49,955 INFO L399 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 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] [2019-09-07 19:18:49,955 INFO L418 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:18:49,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:18:49,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1411407951, now seen corresponding path program 1 times [2019-09-07 19:18:49,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:18:49,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:18:49,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:18:49,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:18:49,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:18:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:18:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1604 backedges. 587 proven. 484 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2019-09-07 19:18:55,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:18:55,524 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:18:55,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:18:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:18:55,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:18:55,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:18:55,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:18:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1604 backedges. 928 proven. 2 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2019-09-07 19:18:56,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:18:56,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 18 [2019-09-07 19:18:56,307 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-07 19:18:56,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-07 19:18:56,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2019-09-07 19:18:56,307 INFO L87 Difference]: Start difference. First operand 349381 states and 369534 transitions. Second operand 18 states. [2019-09-07 19:18:59,765 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-07 19:19:00,288 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-07 19:19:01,751 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2019-09-07 19:19:02,976 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2019-09-07 19:19:03,144 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-09-07 19:19:06,212 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2019-09-07 19:19:14,707 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-07 19:19:17,340 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2019-09-07 19:19:17,771 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-09-07 19:19:21,983 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2019-09-07 19:19:26,396 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-09-07 19:19:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:19:31,639 INFO L93 Difference]: Finished difference Result 686227 states and 727544 transitions. [2019-09-07 19:19:31,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2019-09-07 19:19:31,640 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 782 [2019-09-07 19:19:31,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:19:32,455 INFO L225 Difference]: With dead ends: 686227 [2019-09-07 19:19:32,456 INFO L226 Difference]: Without dead ends: 351909 [2019-09-07 19:19:32,680 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 850 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3182 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1654, Invalid=7466, Unknown=0, NotChecked=0, Total=9120 [2019-09-07 19:19:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351909 states. [2019-09-07 19:19:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351909 to 348948. [2019-09-07 19:19:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348948 states. [2019-09-07 19:19:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348948 states to 348948 states and 368676 transitions. [2019-09-07 19:19:39,174 INFO L78 Accepts]: Start accepts. Automaton has 348948 states and 368676 transitions. Word has length 782 [2019-09-07 19:19:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:19:39,175 INFO L475 AbstractCegarLoop]: Abstraction has 348948 states and 368676 transitions. [2019-09-07 19:19:39,175 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-07 19:19:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 348948 states and 368676 transitions. [2019-09-07 19:19:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2019-09-07 19:19:39,211 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:19:39,212 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:39,212 INFO L418 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:19:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:19:39,213 INFO L82 PathProgramCache]: Analyzing trace with hash -160073649, now seen corresponding path program 1 times [2019-09-07 19:19:39,213 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:19:39,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:19:39,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:19:39,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:19:39,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:19:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:19:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 323 proven. 490 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-09-07 19:19:42,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:19:42,531 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:19:42,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:19:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:19:42,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:19:42,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:19:42,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:19:42,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:19:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 865 proven. 2 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2019-09-07 19:19:43,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:19:43,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5] total 20 [2019-09-07 19:19:43,994 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-07 19:19:43,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-07 19:19:43,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2019-09-07 19:19:43,995 INFO L87 Difference]: Start difference. First operand 348948 states and 368676 transitions. Second operand 20 states. [2019-09-07 19:19:45,099 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2019-09-07 19:19:57,446 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2019-09-07 19:19:59,661 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2019-09-07 19:20:01,672 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2019-09-07 19:20:02,028 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-07 19:20:03,503 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2019-09-07 19:20:03,864 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2019-09-07 19:20:04,053 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-09-07 19:20:04,768 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-07 19:20:10,114 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2019-09-07 19:20:11,567 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-07 19:20:12,247 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2019-09-07 19:20:12,833 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2019-09-07 19:20:13,204 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2019-09-07 19:20:14,445 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-07 19:20:14,763 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-09-07 19:20:15,093 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2019-09-07 19:20:15,288 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-07 19:20:15,683 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2019-09-07 19:20:16,041 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-07 19:20:16,878 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-07 19:20:17,051 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2019-09-07 19:20:17,524 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2019-09-07 19:20:17,928 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 33 [2019-09-07 19:20:18,145 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2019-09-07 19:20:18,490 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2019-09-07 19:20:18,700 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2019-09-07 19:20:19,182 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2019-09-07 19:20:19,986 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2019-09-07 19:20:20,858 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-07 19:20:21,258 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2019-09-07 19:20:21,928 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2019-09-07 19:20:23,121 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-07 19:20:23,364 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2019-09-07 19:20:23,724 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2019-09-07 19:20:25,471 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2019-09-07 19:20:26,221 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-07 19:20:26,432 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-07 19:20:28,248 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-07 19:20:28,529 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2019-09-07 19:20:28,910 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-07 19:20:29,115 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-07 19:20:30,919 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2019-09-07 19:20:31,642 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2019-09-07 19:20:31,921 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2019-09-07 19:20:32,590 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2019-09-07 19:20:33,572 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2019-09-07 19:20:35,899 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2019-09-07 19:20:37,303 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-09-07 19:20:37,804 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-07 19:20:38,398 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2019-09-07 19:20:38,748 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2019-09-07 19:20:39,001 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40