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/Problem18_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:44:39,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:44:39,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:44:39,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 22:44:39,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 22:44:39,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 22:44:39,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 22:44:39,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 22:44:39,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 22:44:39,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 22:44:39,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 22:44:39,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 22:44:39,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 22:44:39,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 22:44:39,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 22:44:39,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 22:44:39,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 22:44:39,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 22:44:39,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 22:44:39,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 22:44:39,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 22:44:39,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 22:44:39,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 22:44:39,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 22:44:39,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 22:44:39,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 22:44:39,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 22:44:39,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 22:44:39,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 22:44:39,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 22:44:39,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 22:44:39,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 22:44:39,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 22:44:39,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 22:44:39,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 22:44:39,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 22:44:39,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 22:44:39,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 22:44:39,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:44:39,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:44:39,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:44:39,433 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 22:44:39,451 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:44:39,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:44:39,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:44:39,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:44:39,454 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:44:39,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:44:39,454 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:44:39,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:44:39,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:44:39,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:44:39,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:44:39,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:44:39,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:44:39,456 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:44:39,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:44:39,457 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:44:39,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:44:39,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:44:39,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:44:39,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:44:39,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:44:39,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:44:39,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:44:39,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:44:39,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:44:39,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:44:39,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:44:39,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:44:39,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:44:39,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:44:39,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:44:39,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:44:39,507 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:44:39,507 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:44:39,508 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label47.c [2019-09-07 22:44:39,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430deac37/6f72695cc0a94cc3b5942f6abb83bbe4/FLAG75ec03750 [2019-09-07 22:44:40,279 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:44:40,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label47.c [2019-09-07 22:44:40,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430deac37/6f72695cc0a94cc3b5942f6abb83bbe4/FLAG75ec03750 [2019-09-07 22:44:40,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430deac37/6f72695cc0a94cc3b5942f6abb83bbe4 [2019-09-07 22:44:40,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:44:40,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:44:40,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:44:40,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:44:40,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:44:40,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:44:40" (1/1) ... [2019-09-07 22:44:40,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f766b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:40, skipping insertion in model container [2019-09-07 22:44:40,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:44:40" (1/1) ... [2019-09-07 22:44:40,445 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:44:40,571 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:44:42,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:44:42,028 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:44:42,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:44:42,569 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:44:42,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42 WrapperNode [2019-09-07 22:44:42,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:44:42,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:44:42,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:44:42,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:44:42,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42" (1/1) ... [2019-09-07 22:44:42,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42" (1/1) ... [2019-09-07 22:44:42,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42" (1/1) ... [2019-09-07 22:44:42,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42" (1/1) ... [2019-09-07 22:44:42,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42" (1/1) ... [2019-09-07 22:44:42,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42" (1/1) ... [2019-09-07 22:44:42,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42" (1/1) ... [2019-09-07 22:44:42,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:44:42,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:44:42,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:44:42,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:44:42,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42" (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 22:44:43,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:44:43,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:44:43,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:44:43,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:44:43,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 22:44:43,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:44:43,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 22:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:44:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:44:43,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:44:43,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:44:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:44:46,831 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:44:46,832 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:44:46,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:44:46 BoogieIcfgContainer [2019-09-07 22:44:46,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:44:46,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:44:46,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:44:46,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:44:46,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:44:40" (1/3) ... [2019-09-07 22:44:46,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126d7ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:44:46, skipping insertion in model container [2019-09-07 22:44:46,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:44:42" (2/3) ... [2019-09-07 22:44:46,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126d7ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:44:46, skipping insertion in model container [2019-09-07 22:44:46,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:44:46" (3/3) ... [2019-09-07 22:44:46,854 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label47.c [2019-09-07 22:44:46,867 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:44:46,879 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:44:46,901 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:44:46,957 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:44:46,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:44:46,958 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:44:46,958 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:44:46,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:44:46,958 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:44:46,958 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:44:46,959 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:44:46,959 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:44:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-09-07 22:44:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-07 22:44:47,021 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:44:47,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:44:47,024 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:44:47,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:44:47,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1073373186, now seen corresponding path program 1 times [2019-09-07 22:44:47,032 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:44:47,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:44:47,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:44:47,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:44:47,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:44:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:44:47,523 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 22:44:47,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:44:47,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 22:44:47,531 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 22:44:47,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 22:44:47,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 22:44:47,549 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-09-07 22:44:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:44:51,840 INFO L93 Difference]: Finished difference Result 2248 states and 4319 transitions. [2019-09-07 22:44:51,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 22:44:51,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-07 22:44:51,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:44:51,881 INFO L225 Difference]: With dead ends: 2248 [2019-09-07 22:44:51,881 INFO L226 Difference]: Without dead ends: 1412 [2019-09-07 22:44:51,891 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 22:44:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-09-07 22:44:52,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-09-07 22:44:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-09-07 22:44:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2630 transitions. [2019-09-07 22:44:52,038 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2630 transitions. Word has length 65 [2019-09-07 22:44:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:44:52,039 INFO L475 AbstractCegarLoop]: Abstraction has 1412 states and 2630 transitions. [2019-09-07 22:44:52,039 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 22:44:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2630 transitions. [2019-09-07 22:44:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-07 22:44:52,044 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:44:52,045 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, 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] [2019-09-07 22:44:52,045 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:44:52,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:44:52,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2034660174, now seen corresponding path program 1 times [2019-09-07 22:44:52,046 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:44:52,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:44:52,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:44:52,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:44:52,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:44:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:44:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:44:52,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:44:52,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:44:52,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:44:52,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:44:52,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:44:52,294 INFO L87 Difference]: Start difference. First operand 1412 states and 2630 transitions. Second operand 6 states. [2019-09-07 22:44:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:44:57,662 INFO L93 Difference]: Finished difference Result 4294 states and 8031 transitions. [2019-09-07 22:44:57,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:44:57,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2019-09-07 22:44:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:44:57,696 INFO L225 Difference]: With dead ends: 4294 [2019-09-07 22:44:57,697 INFO L226 Difference]: Without dead ends: 2888 [2019-09-07 22:44:57,702 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:44:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2019-09-07 22:44:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2864. [2019-09-07 22:44:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-09-07 22:44:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4761 transitions. [2019-09-07 22:44:57,832 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4761 transitions. Word has length 139 [2019-09-07 22:44:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:44:57,835 INFO L475 AbstractCegarLoop]: Abstraction has 2864 states and 4761 transitions. [2019-09-07 22:44:57,835 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:44:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4761 transitions. [2019-09-07 22:44:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-07 22:44:57,849 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:44:57,849 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, 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] [2019-09-07 22:44:57,849 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:44:57,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:44:57,850 INFO L82 PathProgramCache]: Analyzing trace with hash -488454874, now seen corresponding path program 1 times [2019-09-07 22:44:57,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:44:57,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:44:57,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:44:57,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:44:57,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:44:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:44:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:44:58,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:44:58,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:44:58,041 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:44:58,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:44:58,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:44:58,042 INFO L87 Difference]: Start difference. First operand 2864 states and 4761 transitions. Second operand 6 states. [2019-09-07 22:45:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:45:07,701 INFO L93 Difference]: Finished difference Result 11716 states and 20575 transitions. [2019-09-07 22:45:07,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 22:45:07,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2019-09-07 22:45:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:45:07,758 INFO L225 Difference]: With dead ends: 11716 [2019-09-07 22:45:07,759 INFO L226 Difference]: Without dead ends: 8858 [2019-09-07 22:45:07,768 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-07 22:45:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8858 states. [2019-09-07 22:45:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8858 to 8084. [2019-09-07 22:45:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8084 states. [2019-09-07 22:45:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8084 states to 8084 states and 12185 transitions. [2019-09-07 22:45:08,040 INFO L78 Accepts]: Start accepts. Automaton has 8084 states and 12185 transitions. Word has length 151 [2019-09-07 22:45:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:45:08,040 INFO L475 AbstractCegarLoop]: Abstraction has 8084 states and 12185 transitions. [2019-09-07 22:45:08,041 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:45:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 8084 states and 12185 transitions. [2019-09-07 22:45:08,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-09-07 22:45:08,047 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:45:08,047 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, 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, 1, 1, 1, 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 22:45:08,048 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:45:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:45:08,049 INFO L82 PathProgramCache]: Analyzing trace with hash -988780597, now seen corresponding path program 1 times [2019-09-07 22:45:08,049 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:45:08,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:45:08,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:45:08,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:45:08,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:45:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:45:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 116 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:45:08,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:45:08,193 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 22:45:08,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:45:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:45:08,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:45:08,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:45:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-07 22:45:08,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:45:08,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-07 22:45:08,552 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:45:08,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:45:08,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:45:08,553 INFO L87 Difference]: Start difference. First operand 8084 states and 12185 transitions. Second operand 8 states. [2019-09-07 22:45:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:45:16,285 INFO L93 Difference]: Finished difference Result 19992 states and 30277 transitions. [2019-09-07 22:45:16,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 22:45:16,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2019-09-07 22:45:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:45:16,353 INFO L225 Difference]: With dead ends: 19992 [2019-09-07 22:45:16,354 INFO L226 Difference]: Without dead ends: 11914 [2019-09-07 22:45:16,380 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-09-07 22:45:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11914 states. [2019-09-07 22:45:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11914 to 11184. [2019-09-07 22:45:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11184 states. [2019-09-07 22:45:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11184 states to 11184 states and 15174 transitions. [2019-09-07 22:45:16,798 INFO L78 Accepts]: Start accepts. Automaton has 11184 states and 15174 transitions. Word has length 220 [2019-09-07 22:45:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:45:16,800 INFO L475 AbstractCegarLoop]: Abstraction has 11184 states and 15174 transitions. [2019-09-07 22:45:16,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:45:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 11184 states and 15174 transitions. [2019-09-07 22:45:16,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-09-07 22:45:16,806 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:45:16,806 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:16,807 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:45:16,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:45:16,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1868161378, now seen corresponding path program 1 times [2019-09-07 22:45:16,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:45:16,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:45:16,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:45:16,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:45:16,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:45:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:45:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:45:17,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:45:17,112 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 22:45:17,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:45:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:45:17,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:45:17,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:45:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:45:17,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:45:17,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:45:17,406 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:45:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:45:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:45:17,407 INFO L87 Difference]: Start difference. First operand 11184 states and 15174 transitions. Second operand 9 states. [2019-09-07 22:45:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:45:30,046 INFO L93 Difference]: Finished difference Result 40314 states and 63842 transitions. [2019-09-07 22:45:30,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:45:30,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 281 [2019-09-07 22:45:30,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:45:30,198 INFO L225 Difference]: With dead ends: 40314 [2019-09-07 22:45:30,199 INFO L226 Difference]: Without dead ends: 29136 [2019-09-07 22:45:30,242 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:45:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29136 states. [2019-09-07 22:45:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29136 to 28925. [2019-09-07 22:45:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28925 states. [2019-09-07 22:45:31,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28925 states to 28925 states and 42033 transitions. [2019-09-07 22:45:31,131 INFO L78 Accepts]: Start accepts. Automaton has 28925 states and 42033 transitions. Word has length 281 [2019-09-07 22:45:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:45:31,132 INFO L475 AbstractCegarLoop]: Abstraction has 28925 states and 42033 transitions. [2019-09-07 22:45:31,132 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:45:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 28925 states and 42033 transitions. [2019-09-07 22:45:31,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2019-09-07 22:45:31,139 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:45:31,139 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:45:31,140 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:45:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:45:31,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2043417447, now seen corresponding path program 1 times [2019-09-07 22:45:31,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:45:31,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:45:31,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:45:31,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:45:31,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:45:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:45:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 249 proven. 73 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 22:45:32,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:45:32,277 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 22:45:32,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:45:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:45:32,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:45:32,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:45:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-07 22:45:32,545 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:45:32,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:45:32,548 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:45:32,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:45:32,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:45:32,559 INFO L87 Difference]: Start difference. First operand 28925 states and 42033 transitions. Second operand 9 states. [2019-09-07 22:45:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:45:49,407 INFO L93 Difference]: Finished difference Result 90446 states and 172040 transitions. [2019-09-07 22:45:49,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:45:49,407 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 346 [2019-09-07 22:45:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:45:49,772 INFO L225 Difference]: With dead ends: 90446 [2019-09-07 22:45:49,772 INFO L226 Difference]: Without dead ends: 55438 [2019-09-07 22:45:51,232 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:45:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55438 states. [2019-09-07 22:45:52,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55438 to 54884. [2019-09-07 22:45:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54884 states. [2019-09-07 22:45:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54884 states to 54884 states and 83468 transitions. [2019-09-07 22:45:53,013 INFO L78 Accepts]: Start accepts. Automaton has 54884 states and 83468 transitions. Word has length 346 [2019-09-07 22:45:53,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:45:53,014 INFO L475 AbstractCegarLoop]: Abstraction has 54884 states and 83468 transitions. [2019-09-07 22:45:53,014 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:45:53,014 INFO L276 IsEmpty]: Start isEmpty. Operand 54884 states and 83468 transitions. [2019-09-07 22:45:53,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2019-09-07 22:45:53,026 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:45:53,027 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:53,027 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:45:53,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:45:53,028 INFO L82 PathProgramCache]: Analyzing trace with hash -66583712, now seen corresponding path program 1 times [2019-09-07 22:45:53,028 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:45:53,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:45:53,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:45:53,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:45:53,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:45:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:45:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 59 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:45:53,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:45:53,863 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 22:45:53,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:45:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:45:54,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:45:54,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:45:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-09-07 22:45:54,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:45:54,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-07 22:45:54,222 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:45:54,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:45:54,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:45:54,222 INFO L87 Difference]: Start difference. First operand 54884 states and 83468 transitions. Second operand 9 states. [2019-09-07 22:46:04,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:46:04,347 INFO L93 Difference]: Finished difference Result 140695 states and 227807 transitions. [2019-09-07 22:46:04,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 22:46:04,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 490 [2019-09-07 22:46:04,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:46:04,792 INFO L225 Difference]: With dead ends: 140695 [2019-09-07 22:46:04,792 INFO L226 Difference]: Without dead ends: 89355 [2019-09-07 22:46:04,966 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 505 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2019-09-07 22:46:05,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89355 states. [2019-09-07 22:46:08,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89355 to 82627. [2019-09-07 22:46:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82627 states. [2019-09-07 22:46:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82627 states to 82627 states and 129280 transitions. [2019-09-07 22:46:09,148 INFO L78 Accepts]: Start accepts. Automaton has 82627 states and 129280 transitions. Word has length 490 [2019-09-07 22:46:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:46:09,149 INFO L475 AbstractCegarLoop]: Abstraction has 82627 states and 129280 transitions. [2019-09-07 22:46:09,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:46:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 82627 states and 129280 transitions. [2019-09-07 22:46:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2019-09-07 22:46:09,191 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:46:09,191 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:46:09,192 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:46:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:46:09,192 INFO L82 PathProgramCache]: Analyzing trace with hash 65412665, now seen corresponding path program 1 times [2019-09-07 22:46:09,192 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:46:09,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:46:09,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:46:09,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:46:09,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:46:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:46:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 179 proven. 345 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:46:10,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:46:10,186 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:46:10,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:46:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:46:10,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:46:10,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:46:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 467 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-07 22:46:10,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:46:10,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 22:46:10,570 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 22:46:10,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 22:46:10,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:46:10,571 INFO L87 Difference]: Start difference. First operand 82627 states and 129280 transitions. Second operand 13 states. [2019-09-07 22:46:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:46:20,574 INFO L93 Difference]: Finished difference Result 167529 states and 297028 transitions. [2019-09-07 22:46:20,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 22:46:20,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 654 [2019-09-07 22:46:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:46:21,131 INFO L225 Difference]: With dead ends: 167529 [2019-09-07 22:46:21,132 INFO L226 Difference]: Without dead ends: 88446 [2019-09-07 22:46:21,370 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 668 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2019-09-07 22:46:21,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88446 states. [2019-09-07 22:46:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88446 to 82594. [2019-09-07 22:46:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82594 states. [2019-09-07 22:46:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82594 states to 82594 states and 119656 transitions. [2019-09-07 22:46:24,109 INFO L78 Accepts]: Start accepts. Automaton has 82594 states and 119656 transitions. Word has length 654 [2019-09-07 22:46:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:46:24,111 INFO L475 AbstractCegarLoop]: Abstraction has 82594 states and 119656 transitions. [2019-09-07 22:46:24,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 22:46:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 82594 states and 119656 transitions. [2019-09-07 22:46:24,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2019-09-07 22:46:24,143 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:46:24,143 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:24,144 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:46:24,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:46:24,144 INFO L82 PathProgramCache]: Analyzing trace with hash 318269608, now seen corresponding path program 1 times [2019-09-07 22:46:24,144 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:46:24,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:46:24,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:46:24,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:46:24,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:46:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:46:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 607 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2019-09-07 22:46:25,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:46:25,366 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:46:25,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:46:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:46:25,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:46:25,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:46:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 607 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2019-09-07 22:46:25,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:46:25,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:46:25,829 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:46:25,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:46:25,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:46:25,830 INFO L87 Difference]: Start difference. First operand 82594 states and 119656 transitions. Second operand 9 states. [2019-09-07 22:46:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:46:42,191 INFO L93 Difference]: Finished difference Result 198716 states and 336302 transitions. [2019-09-07 22:46:42,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-09-07 22:46:42,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 743 [2019-09-07 22:46:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:46:42,927 INFO L225 Difference]: With dead ends: 198716 [2019-09-07 22:46:42,928 INFO L226 Difference]: Without dead ends: 114436 [2019-09-07 22:46:43,164 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=1234, Unknown=0, NotChecked=0, Total=1560 [2019-09-07 22:46:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114436 states. [2019-09-07 22:46:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114436 to 114376. [2019-09-07 22:46:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114376 states. [2019-09-07 22:46:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114376 states to 114376 states and 195413 transitions. [2019-09-07 22:46:46,948 INFO L78 Accepts]: Start accepts. Automaton has 114376 states and 195413 transitions. Word has length 743 [2019-09-07 22:46:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:46:46,950 INFO L475 AbstractCegarLoop]: Abstraction has 114376 states and 195413 transitions. [2019-09-07 22:46:46,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:46:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 114376 states and 195413 transitions. [2019-09-07 22:46:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2019-09-07 22:46:46,981 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:46:46,982 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:46,982 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:46:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:46:46,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1782640816, now seen corresponding path program 1 times [2019-09-07 22:46:46,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:46:46,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:46:46,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:46:46,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:46:46,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:46:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:46:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2019-09-07 22:46:48,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:46:48,889 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 22:46:48,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:46:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:46:49,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:46:49,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:46:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2019-09-07 22:46:49,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:46:49,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:46:49,337 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:46:49,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:46:49,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:46:49,338 INFO L87 Difference]: Start difference. First operand 114376 states and 195413 transitions. Second operand 9 states. [2019-09-07 22:47:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:47:06,968 INFO L93 Difference]: Finished difference Result 250037 states and 492243 transitions. [2019-09-07 22:47:06,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 22:47:06,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 799 [2019-09-07 22:47:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:47:07,865 INFO L225 Difference]: With dead ends: 250037 [2019-09-07 22:47:07,865 INFO L226 Difference]: Without dead ends: 136564 [2019-09-07 22:47:08,301 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 808 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2019-09-07 22:47:08,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136564 states. [2019-09-07 22:47:16,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136564 to 134771. [2019-09-07 22:47:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134771 states. [2019-09-07 22:47:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134771 states to 134771 states and 235239 transitions. [2019-09-07 22:47:17,846 INFO L78 Accepts]: Start accepts. Automaton has 134771 states and 235239 transitions. Word has length 799 [2019-09-07 22:47:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:47:17,847 INFO L475 AbstractCegarLoop]: Abstraction has 134771 states and 235239 transitions. [2019-09-07 22:47:17,847 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:47:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 134771 states and 235239 transitions. [2019-09-07 22:47:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2019-09-07 22:47:17,875 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:47:17,875 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:17,876 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:47:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:47:17,876 INFO L82 PathProgramCache]: Analyzing trace with hash -368587907, now seen corresponding path program 1 times [2019-09-07 22:47:17,877 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:47:17,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:47:17,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:47:17,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:47:17,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:47:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:47:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2019-09-07 22:47:22,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:47:22,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:47:22,444 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:47:22,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:47:22,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:47:22,445 INFO L87 Difference]: Start difference. First operand 134771 states and 235239 transitions. Second operand 4 states. [2019-09-07 22:47:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:47:35,213 INFO L93 Difference]: Finished difference Result 352328 states and 607096 transitions. [2019-09-07 22:47:35,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:47:35,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 800 [2019-09-07 22:47:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:47:36,609 INFO L225 Difference]: With dead ends: 352328 [2019-09-07 22:47:36,609 INFO L226 Difference]: Without dead ends: 218276 [2019-09-07 22:47:37,208 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 22:47:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218276 states. [2019-09-07 22:47:48,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218276 to 212802. [2019-09-07 22:47:48,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212802 states. [2019-09-07 22:47:51,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212802 states to 212802 states and 340873 transitions. [2019-09-07 22:47:51,175 INFO L78 Accepts]: Start accepts. Automaton has 212802 states and 340873 transitions. Word has length 800 [2019-09-07 22:47:51,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:47:51,176 INFO L475 AbstractCegarLoop]: Abstraction has 212802 states and 340873 transitions. [2019-09-07 22:47:51,176 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:47:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 212802 states and 340873 transitions. [2019-09-07 22:47:51,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2019-09-07 22:47:51,244 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:47:51,245 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:47:51,245 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:47:51,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:47:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1849079880, now seen corresponding path program 1 times [2019-09-07 22:47:51,246 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:47:51,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:47:51,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:47:51,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:47:51,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:47:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:47:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 267 proven. 426 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-07 22:47:57,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:47:57,133 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 22:47:57,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:47:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:47:57,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:47:57,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:47:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 22:47:58,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:47:58,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-07 22:47:58,173 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:47:58,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:47:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:47:58,175 INFO L87 Difference]: Start difference. First operand 212802 states and 340873 transitions. Second operand 9 states. [2019-09-07 22:48:17,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:48:17,127 INFO L93 Difference]: Finished difference Result 431959 states and 693091 transitions. [2019-09-07 22:48:17,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 22:48:17,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 954 [2019-09-07 22:48:17,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:48:17,142 INFO L225 Difference]: With dead ends: 431959 [2019-09-07 22:48:17,142 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 22:48:18,439 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 966 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2019-09-07 22:48:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 22:48:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 22:48:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 22:48:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 22:48:18,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 954 [2019-09-07 22:48:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:48:18,446 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 22:48:18,446 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:48:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 22:48:18,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 22:48:18,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 22:56:40,253 WARN L188 SmtUtils]: Spent 8.18 m on a formula simplification. DAG size of input: 10350 DAG size of output: 5648