java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:09:04,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:09:04,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:09:04,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 23:09:04,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 23:09:04,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 23:09:04,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 23:09:04,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 23:09:04,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 23:09:04,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 23:09:04,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 23:09:04,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 23:09:04,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:09:04,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:09:04,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:09:04,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:09:04,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:09:04,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:09:04,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:09:04,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:09:04,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:09:04,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:09:04,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:09:04,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:09:04,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:09:04,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 23:09:04,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 23:09:04,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 23:09:04,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 23:09:04,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 23:09:04,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 23:09:04,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 23:09:04,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 23:09:04,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:09:04,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:09:04,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:09:04,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 23:09:04,274 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:09:04,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:09:04,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:09:04,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:09:04,276 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:09:04,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:09:04,277 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:09:04,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:09:04,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:09:04,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:09:04,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:09:04,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:09:04,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:09:04,279 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:09:04,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:09:04,280 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:09:04,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:09:04,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:09:04,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:09:04,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:09:04,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:09:04,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:09:04,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:09:04,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:09:04,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:09:04,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:09:04,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:09:04,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:09:04,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:09:04,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:09:04,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:09:04,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:09:04,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:09:04,357 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:09:04,357 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label26.c [2019-09-07 23:09:04,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434eb4e9f/79d9952aeb864b9c924c1237333eb093/FLAG207c3b065 [2019-09-07 23:09:05,258 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:09:05,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label26.c [2019-09-07 23:09:05,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434eb4e9f/79d9952aeb864b9c924c1237333eb093/FLAG207c3b065 [2019-09-07 23:09:05,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434eb4e9f/79d9952aeb864b9c924c1237333eb093 [2019-09-07 23:09:05,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:09:05,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:09:05,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:09:05,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:09:05,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:09:05,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:09:05" (1/1) ... [2019-09-07 23:09:05,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b05ff34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:05, skipping insertion in model container [2019-09-07 23:09:05,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:09:05" (1/1) ... [2019-09-07 23:09:05,797 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:09:06,045 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:09:08,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:09:08,321 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:09:09,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:09:09,441 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:09:09,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09 WrapperNode [2019-09-07 23:09:09,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:09:09,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:09:09,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:09:09,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:09:09,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09" (1/1) ... [2019-09-07 23:09:09,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09" (1/1) ... [2019-09-07 23:09:09,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09" (1/1) ... [2019-09-07 23:09:09,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09" (1/1) ... [2019-09-07 23:09:09,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09" (1/1) ... [2019-09-07 23:09:09,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09" (1/1) ... [2019-09-07 23:09:09,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09" (1/1) ... [2019-09-07 23:09:09,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:09:09,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:09:09,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:09:09,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:09:09,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:09:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:09:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:09:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:09:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:09:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:09:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:09:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:09:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:09:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:09:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:09:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:09:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:09:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:09:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:09:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:09:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:09:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:09:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:09:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:09:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:09:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:09:20,550 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:09:20,551 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:09:20,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:09:20 BoogieIcfgContainer [2019-09-07 23:09:20,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:09:20,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:09:20,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:09:20,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:09:20,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:09:05" (1/3) ... [2019-09-07 23:09:20,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350c5a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:09:20, skipping insertion in model container [2019-09-07 23:09:20,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:09:09" (2/3) ... [2019-09-07 23:09:20,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350c5a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:09:20, skipping insertion in model container [2019-09-07 23:09:20,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:09:20" (3/3) ... [2019-09-07 23:09:20,581 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label26.c [2019-09-07 23:09:20,600 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:09:20,612 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:09:20,633 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:09:20,686 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:09:20,687 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:09:20,687 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:09:20,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:09:20,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:09:20,688 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:09:20,688 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:09:20,688 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:09:20,689 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:09:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:09:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-07 23:09:20,742 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:09:20,744 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] [2019-09-07 23:09:20,746 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:09:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:09:20,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2022464298, now seen corresponding path program 1 times [2019-09-07 23:09:20,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:09:20,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:09:20,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:20,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:09:20,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:09:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:09:21,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:09:21,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:09:21,130 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:09:21,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:09:21,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:09:21,147 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:09:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:09:32,050 INFO L93 Difference]: Finished difference Result 5039 states and 9506 transitions. [2019-09-07 23:09:32,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:09:32,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-09-07 23:09:32,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:09:32,101 INFO L225 Difference]: With dead ends: 5039 [2019-09-07 23:09:32,101 INFO L226 Difference]: Without dead ends: 3200 [2019-09-07 23:09:32,117 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 23:09:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2019-09-07 23:09:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3152. [2019-09-07 23:09:32,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3152 states. [2019-09-07 23:09:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 5815 transitions. [2019-09-07 23:09:32,346 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 5815 transitions. Word has length 32 [2019-09-07 23:09:32,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:09:32,349 INFO L475 AbstractCegarLoop]: Abstraction has 3152 states and 5815 transitions. [2019-09-07 23:09:32,349 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:09:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 5815 transitions. [2019-09-07 23:09:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-09-07 23:09:32,361 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:09:32,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:09:32,363 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:09:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:09:32,364 INFO L82 PathProgramCache]: Analyzing trace with hash 35358019, now seen corresponding path program 1 times [2019-09-07 23:09:32,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:09:32,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:09:32,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:32,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:09:32,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:09:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:09:32,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:09:32,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:09:32,683 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:09:32,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:09:32,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:09:32,684 INFO L87 Difference]: Start difference. First operand 3152 states and 5815 transitions. Second operand 5 states. [2019-09-07 23:09:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:09:49,277 INFO L93 Difference]: Finished difference Result 9427 states and 17481 transitions. [2019-09-07 23:09:49,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 23:09:49,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-09-07 23:09:49,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:09:49,314 INFO L225 Difference]: With dead ends: 9427 [2019-09-07 23:09:49,314 INFO L226 Difference]: Without dead ends: 6281 [2019-09-07 23:09:49,323 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:09:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2019-09-07 23:09:49,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6220. [2019-09-07 23:09:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6220 states. [2019-09-07 23:09:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 9753 transitions. [2019-09-07 23:09:49,510 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 9753 transitions. Word has length 131 [2019-09-07 23:09:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:09:49,513 INFO L475 AbstractCegarLoop]: Abstraction has 6220 states and 9753 transitions. [2019-09-07 23:09:49,513 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:09:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 9753 transitions. [2019-09-07 23:09:49,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-07 23:09:49,526 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:09:49,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:09:49,527 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:09:49,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:09:49,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1410748719, now seen corresponding path program 1 times [2019-09-07 23:09:49,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:09:49,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:09:49,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:49,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:09:49,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:09:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:09:49,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:09:49,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:09:49,789 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:09:49,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:09:49,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:09:49,790 INFO L87 Difference]: Start difference. First operand 6220 states and 9753 transitions. Second operand 6 states. [2019-09-07 23:10:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:10:06,773 INFO L93 Difference]: Finished difference Result 18671 states and 29593 transitions. [2019-09-07 23:10:06,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:10:06,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-09-07 23:10:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:06,828 INFO L225 Difference]: With dead ends: 18671 [2019-09-07 23:10:06,828 INFO L226 Difference]: Without dead ends: 12457 [2019-09-07 23:10:06,844 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:10:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2019-09-07 23:10:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 12227. [2019-09-07 23:10:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12227 states. [2019-09-07 23:10:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12227 states to 12227 states and 18319 transitions. [2019-09-07 23:10:07,205 INFO L78 Accepts]: Start accepts. Automaton has 12227 states and 18319 transitions. Word has length 141 [2019-09-07 23:10:07,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:10:07,207 INFO L475 AbstractCegarLoop]: Abstraction has 12227 states and 18319 transitions. [2019-09-07 23:10:07,207 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:10:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 12227 states and 18319 transitions. [2019-09-07 23:10:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-09-07 23:10:07,210 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:10:07,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:10:07,210 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:10:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:10:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1402186938, now seen corresponding path program 1 times [2019-09-07 23:10:07,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:10:07,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:10:07,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:07,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:07,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:10:07,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:10:07,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:10:07,479 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:10:07,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:10:07,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:10:07,479 INFO L87 Difference]: Start difference. First operand 12227 states and 18319 transitions. Second operand 6 states. [2019-09-07 23:10:20,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:10:20,658 INFO L93 Difference]: Finished difference Result 36643 states and 56300 transitions. [2019-09-07 23:10:20,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:10:20,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2019-09-07 23:10:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:20,755 INFO L225 Difference]: With dead ends: 36643 [2019-09-07 23:10:20,755 INFO L226 Difference]: Without dead ends: 24422 [2019-09-07 23:10:20,789 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:10:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24422 states. [2019-09-07 23:10:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24422 to 24022. [2019-09-07 23:10:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24022 states. [2019-09-07 23:10:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24022 states to 24022 states and 35393 transitions. [2019-09-07 23:10:21,329 INFO L78 Accepts]: Start accepts. Automaton has 24022 states and 35393 transitions. Word has length 196 [2019-09-07 23:10:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:10:21,330 INFO L475 AbstractCegarLoop]: Abstraction has 24022 states and 35393 transitions. [2019-09-07 23:10:21,330 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:10:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 24022 states and 35393 transitions. [2019-09-07 23:10:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-09-07 23:10:21,334 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:10:21,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:10:21,335 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:10:21,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:10:21,335 INFO L82 PathProgramCache]: Analyzing trace with hash -881976424, now seen corresponding path program 1 times [2019-09-07 23:10:21,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:10:21,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:10:21,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:21,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:21,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:10:21,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:10:21,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-07 23:10:21,776 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:10:21,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:10:21,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:10:21,777 INFO L87 Difference]: Start difference. First operand 24022 states and 35393 transitions. Second operand 7 states. [2019-09-07 23:10:46,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:10:46,552 INFO L93 Difference]: Finished difference Result 91324 states and 148516 transitions. [2019-09-07 23:10:46,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 23:10:46,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2019-09-07 23:10:46,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:46,810 INFO L225 Difference]: With dead ends: 91324 [2019-09-07 23:10:46,810 INFO L226 Difference]: Without dead ends: 67308 [2019-09-07 23:10:46,876 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-07 23:10:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67308 states. [2019-09-07 23:10:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67308 to 65277. [2019-09-07 23:10:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65277 states. [2019-09-07 23:10:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65277 states to 65277 states and 93504 transitions. [2019-09-07 23:10:50,399 INFO L78 Accepts]: Start accepts. Automaton has 65277 states and 93504 transitions. Word has length 248 [2019-09-07 23:10:50,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:10:50,400 INFO L475 AbstractCegarLoop]: Abstraction has 65277 states and 93504 transitions. [2019-09-07 23:10:50,400 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:10:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 65277 states and 93504 transitions. [2019-09-07 23:10:50,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2019-09-07 23:10:50,422 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:10:50,423 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:10:50,424 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:10:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:10:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash -177928971, now seen corresponding path program 1 times [2019-09-07 23:10:50,425 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:10:50,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:10:50,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:50,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:50,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:10:51,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:10:51,558 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:10:51,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:51,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:10:51,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:10:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:10:52,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:10:52,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:10:52,173 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:10:52,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:10:52,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:10:52,174 INFO L87 Difference]: Start difference. First operand 65277 states and 93504 transitions. Second operand 9 states. [2019-09-07 23:11:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:11:22,285 INFO L93 Difference]: Finished difference Result 196743 states and 328376 transitions. [2019-09-07 23:11:22,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 23:11:22,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 734 [2019-09-07 23:11:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:11:23,158 INFO L225 Difference]: With dead ends: 196743 [2019-09-07 23:11:23,158 INFO L226 Difference]: Without dead ends: 131472 [2019-09-07 23:11:23,460 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:11:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131472 states. [2019-09-07 23:11:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131472 to 128805. [2019-09-07 23:11:29,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128805 states. [2019-09-07 23:11:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128805 states to 128805 states and 200263 transitions. [2019-09-07 23:11:30,087 INFO L78 Accepts]: Start accepts. Automaton has 128805 states and 200263 transitions. Word has length 734 [2019-09-07 23:11:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:11:30,088 INFO L475 AbstractCegarLoop]: Abstraction has 128805 states and 200263 transitions. [2019-09-07 23:11:30,089 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:11:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 128805 states and 200263 transitions. [2019-09-07 23:11:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2019-09-07 23:11:30,114 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:11:30,115 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:11:30,115 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:11:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:11:30,116 INFO L82 PathProgramCache]: Analyzing trace with hash 189991851, now seen corresponding path program 1 times [2019-09-07 23:11:30,116 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:11:30,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:11:30,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:30,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:11:30,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:11:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2019-09-07 23:11:30,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:11:30,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:11:30,768 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:11:30,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:11:30,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:11:30,769 INFO L87 Difference]: Start difference. First operand 128805 states and 200263 transitions. Second operand 4 states. [2019-09-07 23:11:51,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:11:51,564 INFO L93 Difference]: Finished difference Result 320474 states and 513185 transitions. [2019-09-07 23:11:51,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:11:51,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 743 [2019-09-07 23:11:51,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:11:52,242 INFO L225 Difference]: With dead ends: 320474 [2019-09-07 23:11:52,244 INFO L226 Difference]: Without dead ends: 191675 [2019-09-07 23:11:52,530 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:11:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191675 states. [2019-09-07 23:11:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191675 to 178641. [2019-09-07 23:11:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178641 states. [2019-09-07 23:12:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178641 states to 178641 states and 258173 transitions. [2019-09-07 23:12:01,071 INFO L78 Accepts]: Start accepts. Automaton has 178641 states and 258173 transitions. Word has length 743 [2019-09-07 23:12:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:12:01,073 INFO L475 AbstractCegarLoop]: Abstraction has 178641 states and 258173 transitions. [2019-09-07 23:12:01,073 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:12:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand 178641 states and 258173 transitions. [2019-09-07 23:12:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2019-09-07 23:12:01,093 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:12:01,094 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:12:01,097 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:12:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:12:01,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1597172811, now seen corresponding path program 1 times [2019-09-07 23:12:01,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:12:01,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:12:01,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:01,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:12:01,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:12:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 404 proven. 307 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-07 23:12:07,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:12:07,610 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:12:07,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:12:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:12:07,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:12:07,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:12:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 461 proven. 2 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2019-09-07 23:12:08,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:12:08,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 16 [2019-09-07 23:12:08,675 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 23:12:08,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 23:12:08,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-09-07 23:12:08,676 INFO L87 Difference]: Start difference. First operand 178641 states and 258173 transitions. Second operand 16 states. [2019-09-07 23:12:28,838 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-07 23:13:12,041 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 9 [2019-09-07 23:13:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:13:41,356 INFO L93 Difference]: Finished difference Result 496940 states and 1621856 transitions. [2019-09-07 23:13:41,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2019-09-07 23:13:41,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1059 [2019-09-07 23:13:41,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:13:45,152 INFO L225 Difference]: With dead ends: 496940 [2019-09-07 23:13:45,152 INFO L226 Difference]: Without dead ends: 313524 [2019-09-07 23:13:46,431 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1322 GetRequests, 1167 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9898 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3883, Invalid=20609, Unknown=0, NotChecked=0, Total=24492 [2019-09-07 23:13:46,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313524 states. [2019-09-07 23:14:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313524 to 303359. [2019-09-07 23:14:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303359 states. [2019-09-07 23:14:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303359 states to 303359 states and 763959 transitions. [2019-09-07 23:14:21,839 INFO L78 Accepts]: Start accepts. Automaton has 303359 states and 763959 transitions. Word has length 1059 [2019-09-07 23:14:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:14:21,841 INFO L475 AbstractCegarLoop]: Abstraction has 303359 states and 763959 transitions. [2019-09-07 23:14:21,841 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 23:14:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 303359 states and 763959 transitions. [2019-09-07 23:14:23,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2019-09-07 23:14:23,538 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:14:23,542 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:14:23,542 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:14:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:14:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1919308775, now seen corresponding path program 1 times [2019-09-07 23:14:23,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:14:23,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:14:23,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:23,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:14:23,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 275 proven. 83 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2019-09-07 23:14:25,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:14:25,271 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:14:25,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:14:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:25,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:14:25,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:14:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-09-07 23:14:32,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:14:32,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:14:32,802 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:14:32,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:14:32,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:14:32,803 INFO L87 Difference]: Start difference. First operand 303359 states and 763959 transitions. Second operand 9 states. [2019-09-07 23:15:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:15:10,620 INFO L93 Difference]: Finished difference Result 607228 states and 1531665 transitions. [2019-09-07 23:15:10,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 23:15:10,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 933 [2019-09-07 23:15:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:12,288 INFO L225 Difference]: With dead ends: 607228 [2019-09-07 23:15:12,288 INFO L226 Difference]: Without dead ends: 295831 [2019-09-07 23:15:21,033 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:15:21,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295831 states. [2019-09-07 23:15:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295831 to 293813. [2019-09-07 23:15:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293813 states. [2019-09-07 23:15:33,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293813 states to 293813 states and 579660 transitions. [2019-09-07 23:15:33,170 INFO L78 Accepts]: Start accepts. Automaton has 293813 states and 579660 transitions. Word has length 933 [2019-09-07 23:15:33,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:33,172 INFO L475 AbstractCegarLoop]: Abstraction has 293813 states and 579660 transitions. [2019-09-07 23:15:33,172 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:15:33,172 INFO L276 IsEmpty]: Start isEmpty. Operand 293813 states and 579660 transitions. [2019-09-07 23:15:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2019-09-07 23:15:33,214 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:33,214 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:15:33,215 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:33,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:33,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1028183250, now seen corresponding path program 1 times [2019-09-07 23:15:33,216 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:33,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:33,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:33,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:33,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 270 proven. 215 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2019-09-07 23:15:36,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:15:36,400 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:15:36,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:36,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:15:36,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:15:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-07 23:15:44,862 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:15:44,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:15:44,864 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:15:44,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:15:44,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:15:44,864 INFO L87 Difference]: Start difference. First operand 293813 states and 579660 transitions. Second operand 9 states. [2019-09-07 23:16:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:16:33,305 INFO L93 Difference]: Finished difference Result 731423 states and 1496390 transitions. [2019-09-07 23:16:33,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 23:16:33,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1008 [2019-09-07 23:16:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:16:36,185 INFO L225 Difference]: With dead ends: 731423 [2019-09-07 23:16:36,186 INFO L226 Difference]: Without dead ends: 439015 [2019-09-07 23:16:36,998 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:16:37,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439015 states. [2019-09-07 23:17:03,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439015 to 433590. [2019-09-07 23:17:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433590 states. [2019-09-07 23:17:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433590 states to 433590 states and 772114 transitions. [2019-09-07 23:17:07,796 INFO L78 Accepts]: Start accepts. Automaton has 433590 states and 772114 transitions. Word has length 1008 [2019-09-07 23:17:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:17:07,797 INFO L475 AbstractCegarLoop]: Abstraction has 433590 states and 772114 transitions. [2019-09-07 23:17:07,797 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:17:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 433590 states and 772114 transitions. [2019-09-07 23:17:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2019-09-07 23:17:07,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:17:07,837 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:17:07,837 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:17:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:17:07,838 INFO L82 PathProgramCache]: Analyzing trace with hash -934574259, now seen corresponding path program 1 times [2019-09-07 23:17:07,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:17:07,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:17:07,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:07,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:07,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2019-09-07 23:17:17,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:17:17,955 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:17:17,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:18,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:17:18,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:17:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2019-09-07 23:17:18,708 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:17:18,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:17:18,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:17:18,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:17:18,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:17:18,710 INFO L87 Difference]: Start difference. First operand 433590 states and 772114 transitions. Second operand 9 states. [2019-09-07 23:18:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:18:17,652 INFO L93 Difference]: Finished difference Result 944605 states and 1920831 transitions. [2019-09-07 23:18:17,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 23:18:17,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1128 [2019-09-07 23:18:17,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:18:20,782 INFO L225 Difference]: With dead ends: 944605 [2019-09-07 23:18:20,783 INFO L226 Difference]: Without dead ends: 512405 [2019-09-07 23:18:22,270 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1151 GetRequests, 1135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:18:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512405 states. [2019-09-07 23:18:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512405 to 508531. [2019-09-07 23:18:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508531 states. [2019-09-07 23:19:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508531 states to 508531 states and 971486 transitions. [2019-09-07 23:19:00,643 INFO L78 Accepts]: Start accepts. Automaton has 508531 states and 971486 transitions. Word has length 1128 [2019-09-07 23:19:00,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:19:00,644 INFO L475 AbstractCegarLoop]: Abstraction has 508531 states and 971486 transitions. [2019-09-07 23:19:00,644 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:19:00,644 INFO L276 IsEmpty]: Start isEmpty. Operand 508531 states and 971486 transitions. [2019-09-07 23:19:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2019-09-07 23:19:02,096 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:19:02,096 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:19:02,097 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:19:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:19:02,097 INFO L82 PathProgramCache]: Analyzing trace with hash -107148139, now seen corresponding path program 1 times [2019-09-07 23:19:02,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:19:02,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:19:02,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:19:02,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:19:02,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:19:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:19:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 683 proven. 28 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2019-09-07 23:19:15,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:19:15,260 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:19:15,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:19:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:19:15,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:19:15,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:19:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 1042 proven. 2 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2019-09-07 23:19:16,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:19:16,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2019-09-07 23:19:16,099 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 23:19:16,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 23:19:16,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-09-07 23:19:16,100 INFO L87 Difference]: Start difference. First operand 508531 states and 971486 transitions. Second operand 13 states.