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/Problem13_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:36:11,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:36:11,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:36:11,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 19:36:11,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:36:11,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:36:11,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:36:11,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:36:11,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:36:11,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:36:11,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:36:11,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:36:11,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:36:11,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:36:11,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:36:11,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:36:11,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:36:11,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:36:11,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:36:11,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:36:11,918 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 19:36:11,944 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:36:11,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:36:11,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:36:11,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:36:11,947 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:36:11,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:36:11,948 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:36:11,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:36:11,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:36:11,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:36:11,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:36:11,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:36:11,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:36:11,950 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:36:11,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:36:11,951 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:36:11,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:36:11,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:36:11,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:36:11,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:36:11,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:36:11,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:36:11,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:36:11,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:36:11,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:36:11,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:36:11,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:36:11,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:36:11,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:36:12,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:36:12,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:36:12,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:36:12,028 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:36:12,030 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:36:12,031 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2019-09-07 19:36:12,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fde8bebf/f6d1b58ee2f74242a8b6abb17856034a/FLAGe13f277bd [2019-09-07 19:36:12,894 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:36:12,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2019-09-07 19:36:12,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fde8bebf/f6d1b58ee2f74242a8b6abb17856034a/FLAGe13f277bd [2019-09-07 19:36:12,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fde8bebf/f6d1b58ee2f74242a8b6abb17856034a [2019-09-07 19:36:12,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:36:12,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:36:12,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:36:12,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:36:12,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:36:12,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:36:12" (1/1) ... [2019-09-07 19:36:12,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310c0255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:12, skipping insertion in model container [2019-09-07 19:36:12,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:36:12" (1/1) ... [2019-09-07 19:36:12,989 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:36:13,165 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:36:14,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:36:14,786 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:36:15,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:36:15,637 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:36:15,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15 WrapperNode [2019-09-07 19:36:15,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:36:15,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:36:15,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:36:15,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:36:15,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15" (1/1) ... [2019-09-07 19:36:15,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15" (1/1) ... [2019-09-07 19:36:15,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15" (1/1) ... [2019-09-07 19:36:15,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15" (1/1) ... [2019-09-07 19:36:15,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15" (1/1) ... [2019-09-07 19:36:15,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15" (1/1) ... [2019-09-07 19:36:15,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15" (1/1) ... [2019-09-07 19:36:15,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:36:15,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:36:15,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:36:15,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:36:15,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:36:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:36:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:36:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:36:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:36:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:36:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:36:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:36:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:36:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:36:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:36:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:36:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:36:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:36:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:36:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:36:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:36:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:36:22,302 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:36:22,302 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:36:22,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:36:22 BoogieIcfgContainer [2019-09-07 19:36:22,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:36:22,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:36:22,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:36:22,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:36:22,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:36:12" (1/3) ... [2019-09-07 19:36:22,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8c8519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:36:22, skipping insertion in model container [2019-09-07 19:36:22,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:36:15" (2/3) ... [2019-09-07 19:36:22,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8c8519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:36:22, skipping insertion in model container [2019-09-07 19:36:22,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:36:22" (3/3) ... [2019-09-07 19:36:22,315 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label26.c [2019-09-07 19:36:22,325 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:36:22,334 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:36:22,351 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:36:22,394 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:36:22,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:36:22,395 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:36:22,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:36:22,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:36:22,396 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:36:22,396 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:36:22,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:36:22,396 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:36:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:36:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-07 19:36:22,443 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:36:22,444 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:36:22,447 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:36:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:36:22,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1734538977, now seen corresponding path program 1 times [2019-09-07 19:36:22,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:36:22,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:36:22,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:22,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:22,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:22,738 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 19:36:22,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:36:22,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:36:22,746 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:36:22,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:36:22,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:36:22,765 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-07 19:36:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:36:32,207 INFO L93 Difference]: Finished difference Result 3964 states and 7388 transitions. [2019-09-07 19:36:32,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:36:32,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2019-09-07 19:36:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:36:32,255 INFO L225 Difference]: With dead ends: 3964 [2019-09-07 19:36:32,256 INFO L226 Difference]: Without dead ends: 2758 [2019-09-07 19:36:32,273 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:36:32,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2019-09-07 19:36:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1919. [2019-09-07 19:36:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2019-09-07 19:36:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 3313 transitions. [2019-09-07 19:36:32,476 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 3313 transitions. Word has length 44 [2019-09-07 19:36:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:36:32,477 INFO L475 AbstractCegarLoop]: Abstraction has 1919 states and 3313 transitions. [2019-09-07 19:36:32,478 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:36:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 3313 transitions. [2019-09-07 19:36:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-07 19:36:32,486 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:36:32,487 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:32,487 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:36:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:36:32,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1135589017, now seen corresponding path program 1 times [2019-09-07 19:36:32,489 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:36:32,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:36:32,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:32,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:32,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:36:32,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:36:32,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:36:32,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:36:32,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:36:32,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:36:32,733 INFO L87 Difference]: Start difference. First operand 1919 states and 3313 transitions. Second operand 5 states. [2019-09-07 19:36:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:36:42,764 INFO L93 Difference]: Finished difference Result 5545 states and 9710 transitions. [2019-09-07 19:36:42,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:36:42,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2019-09-07 19:36:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:36:42,789 INFO L225 Difference]: With dead ends: 5545 [2019-09-07 19:36:42,790 INFO L226 Difference]: Without dead ends: 3632 [2019-09-07 19:36:42,796 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 19:36:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2019-09-07 19:36:42,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3623. [2019-09-07 19:36:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3623 states. [2019-09-07 19:36:42,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5644 transitions. [2019-09-07 19:36:42,917 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5644 transitions. Word has length 113 [2019-09-07 19:36:42,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:36:42,918 INFO L475 AbstractCegarLoop]: Abstraction has 3623 states and 5644 transitions. [2019-09-07 19:36:42,918 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:36:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5644 transitions. [2019-09-07 19:36:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-07 19:36:42,920 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:36:42,921 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:42,921 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:36:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:36:42,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1716133827, now seen corresponding path program 1 times [2019-09-07 19:36:42,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:36:42,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:36:42,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:42,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:42,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:36:43,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:36:43,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:36:43,098 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:36:43,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:36:43,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:36:43,099 INFO L87 Difference]: Start difference. First operand 3623 states and 5644 transitions. Second operand 5 states. [2019-09-07 19:36:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:36:52,660 INFO L93 Difference]: Finished difference Result 10808 states and 17216 transitions. [2019-09-07 19:36:52,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:36:52,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2019-09-07 19:36:52,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:36:52,697 INFO L225 Difference]: With dead ends: 10808 [2019-09-07 19:36:52,700 INFO L226 Difference]: Without dead ends: 7191 [2019-09-07 19:36:52,711 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:36:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2019-09-07 19:36:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7086. [2019-09-07 19:36:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7086 states. [2019-09-07 19:36:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7086 states to 7086 states and 10105 transitions. [2019-09-07 19:36:52,920 INFO L78 Accepts]: Start accepts. Automaton has 7086 states and 10105 transitions. Word has length 115 [2019-09-07 19:36:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:36:52,920 INFO L475 AbstractCegarLoop]: Abstraction has 7086 states and 10105 transitions. [2019-09-07 19:36:52,921 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:36:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 7086 states and 10105 transitions. [2019-09-07 19:36:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-09-07 19:36:52,924 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:36:52,924 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:36:52,925 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:36:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:36:52,925 INFO L82 PathProgramCache]: Analyzing trace with hash -100028981, now seen corresponding path program 1 times [2019-09-07 19:36:52,925 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:36:52,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:36:52,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:52,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:36:52,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:36:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:36:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:36:53,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:36:53,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:36:53,107 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:36:53,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:36:53,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:36:53,108 INFO L87 Difference]: Start difference. First operand 7086 states and 10105 transitions. Second operand 4 states. [2019-09-07 19:37:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:37:01,995 INFO L93 Difference]: Finished difference Result 27481 states and 41642 transitions. [2019-09-07 19:37:01,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:37:01,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2019-09-07 19:37:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:37:02,093 INFO L225 Difference]: With dead ends: 27481 [2019-09-07 19:37:02,093 INFO L226 Difference]: Without dead ends: 20401 [2019-09-07 19:37:02,119 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 19:37:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20401 states. [2019-09-07 19:37:02,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20401 to 20362. [2019-09-07 19:37:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20362 states. [2019-09-07 19:37:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20362 states to 20362 states and 28337 transitions. [2019-09-07 19:37:02,821 INFO L78 Accepts]: Start accepts. Automaton has 20362 states and 28337 transitions. Word has length 159 [2019-09-07 19:37:02,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:37:02,822 INFO L475 AbstractCegarLoop]: Abstraction has 20362 states and 28337 transitions. [2019-09-07 19:37:02,822 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:37:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 20362 states and 28337 transitions. [2019-09-07 19:37:02,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-09-07 19:37:02,826 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:37:02,827 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:02,827 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:37:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:37:02,827 INFO L82 PathProgramCache]: Analyzing trace with hash -597008431, now seen corresponding path program 1 times [2019-09-07 19:37:02,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:37:02,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:37:02,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:02,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:02,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:37:02,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:37:02,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:37:02,960 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:37:02,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:37:02,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:37:02,961 INFO L87 Difference]: Start difference. First operand 20362 states and 28337 transitions. Second operand 4 states. [2019-09-07 19:37:09,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:37:09,819 INFO L93 Difference]: Finished difference Result 46370 states and 64117 transitions. [2019-09-07 19:37:09,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:37:09,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-09-07 19:37:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:37:09,919 INFO L225 Difference]: With dead ends: 46370 [2019-09-07 19:37:09,919 INFO L226 Difference]: Without dead ends: 26014 [2019-09-07 19:37:09,968 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 19:37:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26014 states. [2019-09-07 19:37:10,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26014 to 26013. [2019-09-07 19:37:10,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26013 states. [2019-09-07 19:37:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26013 states to 26013 states and 32285 transitions. [2019-09-07 19:37:10,601 INFO L78 Accepts]: Start accepts. Automaton has 26013 states and 32285 transitions. Word has length 164 [2019-09-07 19:37:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:37:10,602 INFO L475 AbstractCegarLoop]: Abstraction has 26013 states and 32285 transitions. [2019-09-07 19:37:10,602 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:37:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 26013 states and 32285 transitions. [2019-09-07 19:37:10,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2019-09-07 19:37:10,613 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:37:10,613 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:37:10,614 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:37:10,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:37:10,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2102942861, now seen corresponding path program 1 times [2019-09-07 19:37:10,614 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:37:10,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:37:10,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:10,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:10,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:37:10,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:37:10,977 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 19:37:10,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:11,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:37:11,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:37:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:37:11,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:37:11,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:37:11,318 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:37:11,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:37:11,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:37:11,319 INFO L87 Difference]: Start difference. First operand 26013 states and 32285 transitions. Second operand 9 states. [2019-09-07 19:37:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:37:37,239 INFO L93 Difference]: Finished difference Result 87366 states and 125510 transitions. [2019-09-07 19:37:37,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-09-07 19:37:37,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 328 [2019-09-07 19:37:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:37:37,764 INFO L225 Difference]: With dead ends: 87366 [2019-09-07 19:37:37,764 INFO L226 Difference]: Without dead ends: 61359 [2019-09-07 19:37:37,904 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=492, Invalid=1860, Unknown=0, NotChecked=0, Total=2352 [2019-09-07 19:37:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61359 states. [2019-09-07 19:37:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61359 to 58377. [2019-09-07 19:37:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58377 states. [2019-09-07 19:37:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58377 states to 58377 states and 73477 transitions. [2019-09-07 19:37:39,441 INFO L78 Accepts]: Start accepts. Automaton has 58377 states and 73477 transitions. Word has length 328 [2019-09-07 19:37:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:37:39,445 INFO L475 AbstractCegarLoop]: Abstraction has 58377 states and 73477 transitions. [2019-09-07 19:37:39,450 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:37:39,451 INFO L276 IsEmpty]: Start isEmpty. Operand 58377 states and 73477 transitions. [2019-09-07 19:37:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2019-09-07 19:37:39,489 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:37:39,490 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:37:39,490 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:37:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:37:39,492 INFO L82 PathProgramCache]: Analyzing trace with hash 688502390, now seen corresponding path program 1 times [2019-09-07 19:37:39,492 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:37:39,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:37:39,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:39,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:39,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 75 proven. 23 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-09-07 19:37:41,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:37:41,417 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:37:41,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:41,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 19:37:41,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:37:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-09-07 19:37:41,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:37:41,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 19:37:41,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:37:41,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:37:41,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:37:41,732 INFO L87 Difference]: Start difference. First operand 58377 states and 73477 transitions. Second operand 7 states. [2019-09-07 19:37:48,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:37:48,942 INFO L93 Difference]: Finished difference Result 116974 states and 149934 transitions. [2019-09-07 19:37:48,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 19:37:48,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2019-09-07 19:37:48,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:37:49,153 INFO L225 Difference]: With dead ends: 116974 [2019-09-07 19:37:49,153 INFO L226 Difference]: Without dead ends: 58603 [2019-09-07 19:37:49,253 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:37:49,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58603 states. [2019-09-07 19:37:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58603 to 51018. [2019-09-07 19:37:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51018 states. [2019-09-07 19:37:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51018 states to 51018 states and 62159 transitions. [2019-09-07 19:37:50,301 INFO L78 Accepts]: Start accepts. Automaton has 51018 states and 62159 transitions. Word has length 386 [2019-09-07 19:37:50,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:37:50,301 INFO L475 AbstractCegarLoop]: Abstraction has 51018 states and 62159 transitions. [2019-09-07 19:37:50,301 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:37:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 51018 states and 62159 transitions. [2019-09-07 19:37:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2019-09-07 19:37:50,348 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:37:50,349 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:50,349 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:37:50,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:37:50,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1259644470, now seen corresponding path program 1 times [2019-09-07 19:37:50,350 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:37:50,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:37:50,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:50,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:50,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:37:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-09-07 19:37:50,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:37:50,948 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 19:37:50,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:37:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:37:51,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:37:51,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:37:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-09-07 19:37:51,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:37:51,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:37:51,207 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:37:51,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:37:51,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:37:51,208 INFO L87 Difference]: Start difference. First operand 51018 states and 62159 transitions. Second operand 9 states. [2019-09-07 19:38:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:38:03,767 INFO L93 Difference]: Finished difference Result 122359 states and 158565 transitions. [2019-09-07 19:38:03,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:38:03,768 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 446 [2019-09-07 19:38:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:38:03,968 INFO L225 Difference]: With dead ends: 122359 [2019-09-07 19:38:03,968 INFO L226 Difference]: Without dead ends: 71347 [2019-09-07 19:38:04,030 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:38:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71347 states. [2019-09-07 19:38:05,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71347 to 71217. [2019-09-07 19:38:05,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71217 states. [2019-09-07 19:38:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71217 states to 71217 states and 89152 transitions. [2019-09-07 19:38:05,360 INFO L78 Accepts]: Start accepts. Automaton has 71217 states and 89152 transitions. Word has length 446 [2019-09-07 19:38:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:38:05,361 INFO L475 AbstractCegarLoop]: Abstraction has 71217 states and 89152 transitions. [2019-09-07 19:38:05,361 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:38:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 71217 states and 89152 transitions. [2019-09-07 19:38:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2019-09-07 19:38:05,435 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:38:05,435 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2019-09-07 19:38:05,435 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:38:05,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:38:05,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2017665525, now seen corresponding path program 1 times [2019-09-07 19:38:05,436 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:38:05,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:38:05,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:38:05,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:38:05,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:38:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:38:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 344 proven. 289 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-09-07 19:38:08,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:38:08,352 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:38:08,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:38:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:38:08,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:38:08,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:38:08,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:38:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2019-09-07 19:38:08,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:38:08,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2019-09-07 19:38:08,834 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-07 19:38:08,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-07 19:38:08,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2019-09-07 19:38:08,835 INFO L87 Difference]: Start difference. First operand 71217 states and 89152 transitions. Second operand 20 states. [2019-09-07 19:38:09,473 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-07 19:38:09,639 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-07 19:38:10,025 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2019-09-07 19:38:10,829 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-07 19:38:11,127 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-07 19:38:12,225 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 19:38:12,608 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-07 19:38:13,120 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-07 19:38:13,827 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 19:38:13,976 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-07 19:38:14,149 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-09-07 19:38:14,434 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-07 19:38:14,821 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-07 19:38:15,407 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-07 19:38:15,714 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-09-07 19:38:15,889 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-07 19:38:16,585 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-07 19:38:16,880 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-07 19:38:17,069 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-07 19:38:17,305 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-07 19:38:17,459 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-07 19:38:17,659 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-07 19:38:17,998 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-07 19:38:18,131 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 40 [2019-09-07 19:38:18,607 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-07 19:38:19,098 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2019-09-07 19:38:19,374 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-07 19:38:19,677 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-07 19:38:19,953 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2019-09-07 19:38:20,148 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-07 19:38:20,470 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2019-09-07 19:38:20,897 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-07 19:38:21,214 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2019-09-07 19:38:21,396 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-07 19:38:21,701 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-07 19:38:22,411 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-07 19:38:22,683 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-07 19:38:23,071 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-07 19:38:23,661 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-07 19:38:24,058 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-07 19:38:24,855 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-07 19:38:25,326 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-07 19:38:27,645 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2019-09-07 19:38:28,488 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-07 19:38:28,834 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2019-09-07 19:38:29,004 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-07 19:38:29,962 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2019-09-07 19:38:30,579 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-07 19:38:32,243 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-07 19:38:32,630 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-07 19:38:32,859 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-07 19:38:34,193 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-07 19:38:35,618 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-07 19:38:36,161 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2019-09-07 19:38:36,801 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2019-09-07 19:38:43,750 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2019-09-07 19:38:44,394 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-07 19:38:45,780 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-07 19:38:47,444 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-07 19:38:47,844 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-09-07 19:38:50,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:38:50,338 INFO L93 Difference]: Finished difference Result 147253 states and 191590 transitions. [2019-09-07 19:38:50,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2019-09-07 19:38:50,338 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 503 [2019-09-07 19:38:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:38:50,613 INFO L225 Difference]: With dead ends: 147253 [2019-09-07 19:38:50,613 INFO L226 Difference]: Without dead ends: 74394 [2019-09-07 19:38:50,732 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10263 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=3889, Invalid=21871, Unknown=0, NotChecked=0, Total=25760 [2019-09-07 19:38:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74394 states. [2019-09-07 19:38:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74394 to 73440. [2019-09-07 19:38:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73440 states. [2019-09-07 19:38:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73440 states to 73440 states and 92797 transitions. [2019-09-07 19:38:51,827 INFO L78 Accepts]: Start accepts. Automaton has 73440 states and 92797 transitions. Word has length 503 [2019-09-07 19:38:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:38:51,827 INFO L475 AbstractCegarLoop]: Abstraction has 73440 states and 92797 transitions. [2019-09-07 19:38:51,828 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-07 19:38:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 73440 states and 92797 transitions. [2019-09-07 19:38:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2019-09-07 19:38:51,855 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:38:51,856 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:38:51,856 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:38:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:38:51,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1723820523, now seen corresponding path program 1 times [2019-09-07 19:38:51,857 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:38:51,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:38:51,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:38:51,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:38:51,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:38:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:38:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 199 proven. 352 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-09-07 19:38:52,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:38:52,984 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 19:38:53,007 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 19:38:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:38:53,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 19:38:53,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:38:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 471 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2019-09-07 19:38:53,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:38:53,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2019-09-07 19:38:53,346 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:38:53,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:38:53,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:38:53,346 INFO L87 Difference]: Start difference. First operand 73440 states and 92797 transitions. Second operand 12 states. [2019-09-07 19:39:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:39:25,884 INFO L93 Difference]: Finished difference Result 239142 states and 315913 transitions. [2019-09-07 19:39:25,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-07 19:39:25,885 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 508 [2019-09-07 19:39:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:39:26,488 INFO L225 Difference]: With dead ends: 239142 [2019-09-07 19:39:26,489 INFO L226 Difference]: Without dead ends: 166520 [2019-09-07 19:39:26,606 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2019-09-07 19:39:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166520 states. [2019-09-07 19:39:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166520 to 161693. [2019-09-07 19:39:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161693 states. [2019-09-07 19:39:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161693 states to 161693 states and 210539 transitions. [2019-09-07 19:39:29,459 INFO L78 Accepts]: Start accepts. Automaton has 161693 states and 210539 transitions. Word has length 508 [2019-09-07 19:39:29,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:39:29,460 INFO L475 AbstractCegarLoop]: Abstraction has 161693 states and 210539 transitions. [2019-09-07 19:39:29,460 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 19:39:29,460 INFO L276 IsEmpty]: Start isEmpty. Operand 161693 states and 210539 transitions. [2019-09-07 19:39:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2019-09-07 19:39:29,496 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:39:29,497 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:29,497 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:39:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:39:29,497 INFO L82 PathProgramCache]: Analyzing trace with hash 590599174, now seen corresponding path program 1 times [2019-09-07 19:39:29,497 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:39:29,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:39:29,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:29,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:39:29,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:39:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 288 proven. 259 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-09-07 19:39:29,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:39:29,976 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) [2019-09-07 19:39:29,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:39:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:39:30,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-07 19:39:30,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:39:30,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 7 terms [2019-09-07 19:39:30,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-09-07 19:39:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 681 proven. 47 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2019-09-07 19:39:33,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:39:33,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2019-09-07 19:39:33,575 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 19:39:33,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 19:39:33,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:39:33,576 INFO L87 Difference]: Start difference. First operand 161693 states and 210539 transitions. Second operand 13 states. [2019-09-07 19:40:12,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:40:12,189 INFO L93 Difference]: Finished difference Result 417427 states and 542204 transitions. [2019-09-07 19:40:12,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-09-07 19:40:12,190 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 602 [2019-09-07 19:40:12,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:40:13,141 INFO L225 Difference]: With dead ends: 417427 [2019-09-07 19:40:13,141 INFO L226 Difference]: Without dead ends: 250818 [2019-09-07 19:40:14,334 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1013, Invalid=4687, Unknown=0, NotChecked=0, Total=5700 [2019-09-07 19:40:14,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250818 states. [2019-09-07 19:40:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250818 to 240969. [2019-09-07 19:40:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240969 states. [2019-09-07 19:40:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240969 states to 240969 states and 291375 transitions. [2019-09-07 19:40:22,533 INFO L78 Accepts]: Start accepts. Automaton has 240969 states and 291375 transitions. Word has length 602 [2019-09-07 19:40:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:40:22,534 INFO L475 AbstractCegarLoop]: Abstraction has 240969 states and 291375 transitions. [2019-09-07 19:40:22,534 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 19:40:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 240969 states and 291375 transitions. [2019-09-07 19:40:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2019-09-07 19:40:22,593 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:40:22,594 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 19:40:22,594 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:40:22,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:40:22,595 INFO L82 PathProgramCache]: Analyzing trace with hash 515415734, now seen corresponding path program 1 times [2019-09-07 19:40:22,595 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:40:22,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:40:22,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:22,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:22,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:40:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2019-09-07 19:40:23,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:40:23,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:40:23,064 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:40:23,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:40:23,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:40:23,065 INFO L87 Difference]: Start difference. First operand 240969 states and 291375 transitions. Second operand 4 states. [2019-09-07 19:40:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:40:41,822 INFO L93 Difference]: Finished difference Result 607728 states and 742992 transitions. [2019-09-07 19:40:41,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:40:41,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 642 [2019-09-07 19:40:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:40:43,002 INFO L225 Difference]: With dead ends: 607728 [2019-09-07 19:40:43,002 INFO L226 Difference]: Without dead ends: 367580 [2019-09-07 19:40:43,298 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 19:40:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367580 states. [2019-09-07 19:40:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367580 to 346418. [2019-09-07 19:40:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346418 states. [2019-09-07 19:40:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346418 states to 346418 states and 423712 transitions. [2019-09-07 19:40:52,568 INFO L78 Accepts]: Start accepts. Automaton has 346418 states and 423712 transitions. Word has length 642 [2019-09-07 19:40:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:40:52,569 INFO L475 AbstractCegarLoop]: Abstraction has 346418 states and 423712 transitions. [2019-09-07 19:40:52,569 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:40:52,569 INFO L276 IsEmpty]: Start isEmpty. Operand 346418 states and 423712 transitions. [2019-09-07 19:40:53,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1466 [2019-09-07 19:40:53,066 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:40:53,067 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:40:53,068 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:40:53,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:40:53,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1533350804, now seen corresponding path program 1 times [2019-09-07 19:40:53,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:40:53,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:40:53,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:53,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:40:53,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:40:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2198 backedges. 435 proven. 1144 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2019-09-07 19:41:00,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:41:00,363 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:41:00,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:41:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:00,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 19:41:00,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:41:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2198 backedges. 1016 proven. 2 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2019-09-07 19:41:02,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:41:02,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 19:41:02,279 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 19:41:02,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 19:41:02,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:41:02,280 INFO L87 Difference]: Start difference. First operand 346418 states and 423712 transitions. Second operand 13 states. [2019-09-07 19:41:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:41:33,221 INFO L93 Difference]: Finished difference Result 695629 states and 858722 transitions. [2019-09-07 19:41:33,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2019-09-07 19:41:33,222 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1465 [2019-09-07 19:41:33,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:41:35,360 INFO L225 Difference]: With dead ends: 695629 [2019-09-07 19:41:35,360 INFO L226 Difference]: Without dead ends: 349219 [2019-09-07 19:41:35,770 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1647 GetRequests, 1546 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3976 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1452, Invalid=8648, Unknown=0, NotChecked=0, Total=10100 [2019-09-07 19:41:36,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349219 states. [2019-09-07 19:41:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349219 to 339445. [2019-09-07 19:41:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339445 states. [2019-09-07 19:41:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339445 states to 339445 states and 396446 transitions. [2019-09-07 19:41:42,963 INFO L78 Accepts]: Start accepts. Automaton has 339445 states and 396446 transitions. Word has length 1465 [2019-09-07 19:41:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:41:42,965 INFO L475 AbstractCegarLoop]: Abstraction has 339445 states and 396446 transitions. [2019-09-07 19:41:42,965 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 19:41:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 339445 states and 396446 transitions. [2019-09-07 19:41:43,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1401 [2019-09-07 19:41:43,564 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:41:43,565 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:43,565 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:41:43,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:41:43,566 INFO L82 PathProgramCache]: Analyzing trace with hash -53795329, now seen corresponding path program 1 times [2019-09-07 19:41:43,566 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:41:43,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:41:43,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:41:43,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:41:43,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:41:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2197 backedges. 354 proven. 466 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2019-09-07 19:41:47,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:41:47,196 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 19:41:47,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:41:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:41:47,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 19:41:47,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:41:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2197 backedges. 1050 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2019-09-07 19:41:53,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:41:53,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 19:41:53,689 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 19:41:53,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 19:41:53,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:41:53,690 INFO L87 Difference]: Start difference. First operand 339445 states and 396446 transitions. Second operand 8 states. [2019-09-07 19:42:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:42:15,870 INFO L93 Difference]: Finished difference Result 736980 states and 863671 transitions. [2019-09-07 19:42:15,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 19:42:15,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1400 [2019-09-07 19:42:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:42:17,454 INFO L225 Difference]: With dead ends: 736980 [2019-09-07 19:42:17,455 INFO L226 Difference]: Without dead ends: 372195 [2019-09-07 19:42:17,743 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1429 GetRequests, 1411 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2019-09-07 19:42:18,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372195 states. [2019-09-07 19:42:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372195 to 349520. [2019-09-07 19:42:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349520 states. [2019-09-07 19:42:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349520 states to 349520 states and 400186 transitions. [2019-09-07 19:42:28,599 INFO L78 Accepts]: Start accepts. Automaton has 349520 states and 400186 transitions. Word has length 1400 [2019-09-07 19:42:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:42:28,599 INFO L475 AbstractCegarLoop]: Abstraction has 349520 states and 400186 transitions. [2019-09-07 19:42:28,600 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 19:42:28,600 INFO L276 IsEmpty]: Start isEmpty. Operand 349520 states and 400186 transitions. [2019-09-07 19:42:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1555 [2019-09-07 19:42:30,210 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:42:30,211 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:42:30,211 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:42:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:42:30,212 INFO L82 PathProgramCache]: Analyzing trace with hash 843843615, now seen corresponding path program 1 times [2019-09-07 19:42:30,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:42:30,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:42:30,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:30,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:42:30,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:42:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3308 backedges. 689 proven. 1278 refuted. 0 times theorem prover too weak. 1341 trivial. 0 not checked. [2019-09-07 19:42:37,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:42:37,293 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 19:42:37,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:42:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:42:37,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:42:37,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:42:37,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:42:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3308 backedges. 1278 proven. 2 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2019-09-07 19:42:39,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:42:39,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 19:42:39,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:42:39,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:42:39,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:42:39,068 INFO L87 Difference]: Start difference. First operand 349520 states and 400186 transitions. Second operand 16 states. [2019-09-07 19:43:39,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:43:39,281 INFO L93 Difference]: Finished difference Result 792814 states and 912417 transitions. [2019-09-07 19:43:39,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2019-09-07 19:43:39,281 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1554 [2019-09-07 19:43:39,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:43:40,867 INFO L225 Difference]: With dead ends: 792814 [2019-09-07 19:43:40,868 INFO L226 Difference]: Without dead ends: 444114 [2019-09-07 19:43:41,390 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1940 GetRequests, 1737 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17679 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=4156, Invalid=37664, Unknown=0, NotChecked=0, Total=41820 [2019-09-07 19:43:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444114 states. [2019-09-07 19:43:49,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444114 to 427756. [2019-09-07 19:43:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427756 states. [2019-09-07 19:44:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427756 states to 427756 states and 480280 transitions. [2019-09-07 19:44:00,190 INFO L78 Accepts]: Start accepts. Automaton has 427756 states and 480280 transitions. Word has length 1554 [2019-09-07 19:44:00,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:44:00,190 INFO L475 AbstractCegarLoop]: Abstraction has 427756 states and 480280 transitions. [2019-09-07 19:44:00,191 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:44:00,191 INFO L276 IsEmpty]: Start isEmpty. Operand 427756 states and 480280 transitions. [2019-09-07 19:44:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1400 [2019-09-07 19:44:00,607 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:44:00,608 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:44:00,608 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:44:00,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:44:00,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1094662419, now seen corresponding path program 1 times [2019-09-07 19:44:00,609 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:44:00,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:44:00,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:44:00,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:44:00,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:44:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:44:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2019-09-07 19:44:03,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:44:03,356 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 19:44:03,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:44:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:44:03,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 19:44:03,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:44:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (11)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 19:44:05,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:44:05,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2019-09-07 19:44:05,103 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:44:05,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:44:05,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:44:05,104 INFO L87 Difference]: Start difference. First operand 427756 states and 480280 transitions. Second operand 3 states. [2019-09-07 19:44:15,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:44:15,893 INFO L93 Difference]: Finished difference Result 883477 states and 994187 transitions. [2019-09-07 19:44:15,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:44:15,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1399 [2019-09-07 19:44:15,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:44:17,330 INFO L225 Difference]: With dead ends: 883477 [2019-09-07 19:44:17,330 INFO L226 Difference]: Without dead ends: 459760 [2019-09-07 19:44:17,652 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1401 GetRequests, 1400 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 19:44:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459760 states. [2019-09-07 19:44:31,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459760 to 445979. [2019-09-07 19:44:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445979 states. [2019-09-07 19:44:39,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445979 states to 445979 states and 498167 transitions. [2019-09-07 19:44:39,929 INFO L78 Accepts]: Start accepts. Automaton has 445979 states and 498167 transitions. Word has length 1399 [2019-09-07 19:44:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:44:39,930 INFO L475 AbstractCegarLoop]: Abstraction has 445979 states and 498167 transitions. [2019-09-07 19:44:39,930 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:44:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 445979 states and 498167 transitions. [2019-09-07 19:44:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2019-09-07 19:44:40,388 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:44:40,388 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:44:40,389 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:44:40,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:44:40,389 INFO L82 PathProgramCache]: Analyzing trace with hash 643344318, now seen corresponding path program 1 times [2019-09-07 19:44:40,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:44:40,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:44:40,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:44:40,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:44:40,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:44:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:44:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 305 proven. 1069 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2019-09-07 19:44:43,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:44:43,295 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 19:44:43,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:44:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:44:43,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:44:43,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:44:43,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:44:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1236 proven. 2 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2019-09-07 19:44:45,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:44:45,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 19:44:45,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:44:45,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:44:45,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:44:45,156 INFO L87 Difference]: Start difference. First operand 445979 states and 498167 transitions. Second operand 16 states. [2019-09-07 19:45:29,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:45:29,294 INFO L93 Difference]: Finished difference Result 821738 states and 922914 transitions. [2019-09-07 19:45:29,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2019-09-07 19:45:29,295 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1428 [2019-09-07 19:45:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:45:30,489 INFO L225 Difference]: With dead ends: 821738 [2019-09-07 19:45:30,489 INFO L226 Difference]: Without dead ends: 481777 [2019-09-07 19:45:31,779 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1615 GetRequests, 1506 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4564 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1717, Invalid=10273, Unknown=0, NotChecked=0, Total=11990 [2019-09-07 19:45:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481777 states. [2019-09-07 19:45:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481777 to 466420. [2019-09-07 19:45:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466420 states. [2019-09-07 19:45:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466420 states to 466420 states and 516702 transitions. [2019-09-07 19:45:52,543 INFO L78 Accepts]: Start accepts. Automaton has 466420 states and 516702 transitions. Word has length 1428 [2019-09-07 19:45:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:45:52,544 INFO L475 AbstractCegarLoop]: Abstraction has 466420 states and 516702 transitions. [2019-09-07 19:45:52,544 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:45:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 466420 states and 516702 transitions. [2019-09-07 19:45:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1518 [2019-09-07 19:45:52,892 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:45:52,893 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:45:52,893 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:45:52,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:45:52,894 INFO L82 PathProgramCache]: Analyzing trace with hash -969590487, now seen corresponding path program 1 times [2019-09-07 19:45:52,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:45:52,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:45:52,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:45:52,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:45:52,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:45:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:45:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 570 proven. 426 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2019-09-07 19:45:55,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:45:55,391 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 19:45:55,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:45:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:45:55,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:45:55,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:45:55,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:45:55,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:45:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 1360 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-07 19:45:57,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:45:57,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 19:45:57,345 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:45:57,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:45:57,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:45:57,345 INFO L87 Difference]: Start difference. First operand 466420 states and 516702 transitions. Second operand 7 states. [2019-09-07 19:46:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:46:17,970 INFO L93 Difference]: Finished difference Result 995355 states and 1153829 transitions. [2019-09-07 19:46:17,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:46:17,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1517 [2019-09-07 19:46:17,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:46:19,709 INFO L225 Difference]: With dead ends: 995355 [2019-09-07 19:46:19,709 INFO L226 Difference]: Without dead ends: 536959 [2019-09-07 19:46:20,109 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1524 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:46:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536959 states. [2019-09-07 19:46:37,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536959 to 520429. [2019-09-07 19:46:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520429 states. [2019-09-07 19:46:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520429 states to 520429 states and 572175 transitions. [2019-09-07 19:46:39,373 INFO L78 Accepts]: Start accepts. Automaton has 520429 states and 572175 transitions. Word has length 1517 [2019-09-07 19:46:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:46:39,374 INFO L475 AbstractCegarLoop]: Abstraction has 520429 states and 572175 transitions. [2019-09-07 19:46:39,374 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:46:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand 520429 states and 572175 transitions. [2019-09-07 19:46:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2083 [2019-09-07 19:46:39,969 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:46:39,970 INFO L399 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:46:39,971 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:46:39,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:46:39,971 INFO L82 PathProgramCache]: Analyzing trace with hash 231184054, now seen corresponding path program 1 times [2019-09-07 19:46:39,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:46:39,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:46:39,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:46:39,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:46:39,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:46:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:46:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5549 backedges. 1025 proven. 575 refuted. 0 times theorem prover too weak. 3949 trivial. 0 not checked. [2019-09-07 19:46:50,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:46:50,190 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 19:46:50,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:46:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:46:50,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:46:50,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:46:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5549 backedges. 3679 proven. 2 refuted. 0 times theorem prover too weak. 1868 trivial. 0 not checked. [2019-09-07 19:46:52,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:46:52,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2019-09-07 19:46:52,622 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 19:46:52,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 19:46:52,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-07 19:46:52,623 INFO L87 Difference]: Start difference. First operand 520429 states and 572175 transitions. Second operand 10 states. [2019-09-07 19:47:16,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:47:16,982 INFO L93 Difference]: Finished difference Result 1041385 states and 1171102 transitions. [2019-09-07 19:47:16,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-07 19:47:16,982 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2082 [2019-09-07 19:47:16,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:47:18,451 INFO L225 Difference]: With dead ends: 1041385 [2019-09-07 19:47:18,451 INFO L226 Difference]: Without dead ends: 529005 [2019-09-07 19:47:18,860 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2145 GetRequests, 2108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=1191, Unknown=0, NotChecked=0, Total=1482 [2019-09-07 19:47:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529005 states.