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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:18:37,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:18:37,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:18:37,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 22:18:37,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 22:18:37,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 22:18:37,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 22:18:37,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 22:18:37,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 22:18:37,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 22:18:37,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 22:18:37,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 22:18:37,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 22:18:37,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 22:18:37,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 22:18:37,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 22:18:37,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 22:18:37,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 22:18:37,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 22:18:37,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 22:18:37,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 22:18:37,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 22:18:37,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 22:18:37,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 22:18:37,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 22:18:37,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 22:18:37,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 22:18:37,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 22:18:37,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 22:18:37,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 22:18:37,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 22:18:37,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 22:18:37,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 22:18:37,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 22:18:37,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 22:18:37,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 22:18:37,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 22:18:37,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 22:18:37,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:18:37,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:18:37,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:18:37,645 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 22:18:37,662 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:18:37,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:18:37,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:18:37,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:18:37,665 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:18:37,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:18:37,666 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:18:37,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:18:37,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:18:37,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:18:37,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:18:37,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:18:37,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:18:37,668 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:18:37,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:18:37,668 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:18:37,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:18:37,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:18:37,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:18:37,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:18:37,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:18:37,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:18:37,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:18:37,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:18:37,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:18:37,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:18:37,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:18:37,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:18:37,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:18:37,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:18:37,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:18:37,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:18:37,726 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:18:37,726 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:18:37,727 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label02.c [2019-09-07 22:18:37,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c8866120/bc531752d95f424cb34d6c8ce3a3ca84/FLAGf5ab625e8 [2019-09-07 22:18:38,475 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:18:38,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label02.c [2019-09-07 22:18:38,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c8866120/bc531752d95f424cb34d6c8ce3a3ca84/FLAGf5ab625e8 [2019-09-07 22:18:38,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c8866120/bc531752d95f424cb34d6c8ce3a3ca84 [2019-09-07 22:18:38,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:18:38,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:18:38,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:18:38,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:18:38,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:18:38,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:18:38" (1/1) ... [2019-09-07 22:18:38,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a46f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:38, skipping insertion in model container [2019-09-07 22:18:38,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:18:38" (1/1) ... [2019-09-07 22:18:38,640 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:18:38,782 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:18:39,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:18:39,886 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:18:40,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:18:40,349 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:18:40,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40 WrapperNode [2019-09-07 22:18:40,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:18:40,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:18:40,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:18:40,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:18:40,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40" (1/1) ... [2019-09-07 22:18:40,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40" (1/1) ... [2019-09-07 22:18:40,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40" (1/1) ... [2019-09-07 22:18:40,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40" (1/1) ... [2019-09-07 22:18:40,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40" (1/1) ... [2019-09-07 22:18:40,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40" (1/1) ... [2019-09-07 22:18:40,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40" (1/1) ... [2019-09-07 22:18:40,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:18:40,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:18:40,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:18:40,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:18:40,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40" (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 22:18:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:18:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:18:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:18:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:18:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 22:18:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:18:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:18:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:18:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 22:18:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:18:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:18:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:18:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:18:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:18:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:18:44,522 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:18:44,522 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:18:44,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:18:44 BoogieIcfgContainer [2019-09-07 22:18:44,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:18:44,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:18:44,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:18:44,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:18:44,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:18:38" (1/3) ... [2019-09-07 22:18:44,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22974886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:18:44, skipping insertion in model container [2019-09-07 22:18:44,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:18:40" (2/3) ... [2019-09-07 22:18:44,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22974886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:18:44, skipping insertion in model container [2019-09-07 22:18:44,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:18:44" (3/3) ... [2019-09-07 22:18:44,541 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label02.c [2019-09-07 22:18:44,553 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:18:44,567 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:18:44,586 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:18:44,709 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:18:44,710 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:18:44,710 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:18:44,710 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:18:44,711 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:18:44,711 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:18:44,711 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:18:44,711 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:18:44,712 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:18:44,768 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-09-07 22:18:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-07 22:18:44,784 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:18:44,785 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, 1, 1] [2019-09-07 22:18:44,789 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:18:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:18:44,797 INFO L82 PathProgramCache]: Analyzing trace with hash 719675626, now seen corresponding path program 1 times [2019-09-07 22:18:44,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:18:44,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:18:44,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:44,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:18:44,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:18:45,271 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 22:18:45,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:18:45,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 22:18:45,279 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 22:18:45,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 22:18:45,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 22:18:45,296 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-09-07 22:18:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:18:49,566 INFO L93 Difference]: Finished difference Result 2248 states and 4319 transitions. [2019-09-07 22:18:49,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 22:18:49,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-09-07 22:18:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:18:49,606 INFO L225 Difference]: With dead ends: 2248 [2019-09-07 22:18:49,606 INFO L226 Difference]: Without dead ends: 1412 [2019-09-07 22:18:49,616 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 22:18:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-09-07 22:18:49,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-09-07 22:18:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-09-07 22:18:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2630 transitions. [2019-09-07 22:18:49,773 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2630 transitions. Word has length 67 [2019-09-07 22:18:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:18:49,775 INFO L475 AbstractCegarLoop]: Abstraction has 1412 states and 2630 transitions. [2019-09-07 22:18:49,775 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 22:18:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2630 transitions. [2019-09-07 22:18:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-07 22:18:49,787 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:18:49,788 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, 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] [2019-09-07 22:18:49,789 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:18:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:18:49,790 INFO L82 PathProgramCache]: Analyzing trace with hash 665452822, now seen corresponding path program 1 times [2019-09-07 22:18:49,790 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:18:49,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:18:49,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:49,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:18:49,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:18:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:18:50,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:18:50,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:18:50,004 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:18:50,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:18:50,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:18:50,005 INFO L87 Difference]: Start difference. First operand 1412 states and 2630 transitions. Second operand 6 states. [2019-09-07 22:18:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:18:54,977 INFO L93 Difference]: Finished difference Result 4294 states and 8031 transitions. [2019-09-07 22:18:54,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:18:54,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-09-07 22:18:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:18:54,998 INFO L225 Difference]: With dead ends: 4294 [2019-09-07 22:18:54,998 INFO L226 Difference]: Without dead ends: 2888 [2019-09-07 22:18:55,002 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 22:18:55,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2019-09-07 22:18:55,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2864. [2019-09-07 22:18:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-09-07 22:18:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4761 transitions. [2019-09-07 22:18:55,137 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4761 transitions. Word has length 141 [2019-09-07 22:18:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:18:55,139 INFO L475 AbstractCegarLoop]: Abstraction has 2864 states and 4761 transitions. [2019-09-07 22:18:55,139 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:18:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4761 transitions. [2019-09-07 22:18:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-09-07 22:18:55,149 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:18:55,149 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:18:55,149 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:18:55,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:18:55,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1806668562, now seen corresponding path program 1 times [2019-09-07 22:18:55,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:18:55,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:18:55,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:55,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:18:55,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:18:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:18:55,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:18:55,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:18:55,350 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:18:55,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:18:55,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:18:55,351 INFO L87 Difference]: Start difference. First operand 2864 states and 4761 transitions. Second operand 6 states. [2019-09-07 22:19:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:19:04,047 INFO L93 Difference]: Finished difference Result 11718 states and 20576 transitions. [2019-09-07 22:19:04,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 22:19:04,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2019-09-07 22:19:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:19:04,104 INFO L225 Difference]: With dead ends: 11718 [2019-09-07 22:19:04,105 INFO L226 Difference]: Without dead ends: 8860 [2019-09-07 22:19:04,114 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 22:19:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2019-09-07 22:19:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8802. [2019-09-07 22:19:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8802 states. [2019-09-07 22:19:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8802 states to 8802 states and 13066 transitions. [2019-09-07 22:19:04,510 INFO L78 Accepts]: Start accepts. Automaton has 8802 states and 13066 transitions. Word has length 153 [2019-09-07 22:19:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:19:04,511 INFO L475 AbstractCegarLoop]: Abstraction has 8802 states and 13066 transitions. [2019-09-07 22:19:04,511 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:19:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8802 states and 13066 transitions. [2019-09-07 22:19:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-09-07 22:19:04,515 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:19:04,515 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, 3, 3, 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 22:19:04,515 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:19:04,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:19:04,516 INFO L82 PathProgramCache]: Analyzing trace with hash -819427725, now seen corresponding path program 1 times [2019-09-07 22:19:04,516 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:19:04,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:19:04,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:04,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:19:04,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:19:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 120 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:19:04,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:19:04,637 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 22:19:04,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:19:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:19:04,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:19:04,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:19:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-07 22:19:04,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:19:04,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-07 22:19:04,868 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:19:04,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:19:04,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:19:04,869 INFO L87 Difference]: Start difference. First operand 8802 states and 13066 transitions. Second operand 8 states. [2019-09-07 22:19:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:19:11,251 INFO L93 Difference]: Finished difference Result 22136 states and 32941 transitions. [2019-09-07 22:19:11,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 22:19:11,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2019-09-07 22:19:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:19:11,307 INFO L225 Difference]: With dead ends: 22136 [2019-09-07 22:19:11,307 INFO L226 Difference]: Without dead ends: 13340 [2019-09-07 22:19:11,332 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 226 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 22:19:11,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2019-09-07 22:19:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 12614. [2019-09-07 22:19:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12614 states. [2019-09-07 22:19:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12614 states to 12614 states and 16828 transitions. [2019-09-07 22:19:11,660 INFO L78 Accepts]: Start accepts. Automaton has 12614 states and 16828 transitions. Word has length 222 [2019-09-07 22:19:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:19:11,661 INFO L475 AbstractCegarLoop]: Abstraction has 12614 states and 16828 transitions. [2019-09-07 22:19:11,662 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:19:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12614 states and 16828 transitions. [2019-09-07 22:19:11,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-09-07 22:19:11,666 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:19:11,667 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:19:11,667 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:19:11,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:19:11,667 INFO L82 PathProgramCache]: Analyzing trace with hash -170626550, now seen corresponding path program 1 times [2019-09-07 22:19:11,668 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:19:11,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:19:11,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:11,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:19:11,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:19:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:19:11,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:19:11,891 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 22:19:11,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:19:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:19:11,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:19:12,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:19:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 22:19:12,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:19:12,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:19:12,225 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:19:12,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:19:12,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:19:12,226 INFO L87 Difference]: Start difference. First operand 12614 states and 16828 transitions. Second operand 9 states. [2019-09-07 22:19:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:19:25,615 INFO L93 Difference]: Finished difference Result 43160 states and 67239 transitions. [2019-09-07 22:19:25,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:19:25,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 283 [2019-09-07 22:19:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:19:25,786 INFO L225 Difference]: With dead ends: 43160 [2019-09-07 22:19:25,786 INFO L226 Difference]: Without dead ends: 30552 [2019-09-07 22:19:25,838 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 289 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 22:19:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30552 states. [2019-09-07 22:19:26,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30552 to 30336. [2019-09-07 22:19:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30336 states. [2019-09-07 22:19:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30336 states to 30336 states and 43733 transitions. [2019-09-07 22:19:26,675 INFO L78 Accepts]: Start accepts. Automaton has 30336 states and 43733 transitions. Word has length 283 [2019-09-07 22:19:26,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:19:26,676 INFO L475 AbstractCegarLoop]: Abstraction has 30336 states and 43733 transitions. [2019-09-07 22:19:26,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:19:26,676 INFO L276 IsEmpty]: Start isEmpty. Operand 30336 states and 43733 transitions. [2019-09-07 22:19:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2019-09-07 22:19:26,684 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:19:26,685 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, 4, 4, 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 22:19:26,685 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:19:26,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:19:26,685 INFO L82 PathProgramCache]: Analyzing trace with hash -513818833, now seen corresponding path program 1 times [2019-09-07 22:19:26,686 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:19:26,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:19:26,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:26,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:19:26,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:19:27,749 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 255 proven. 73 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 22:19:27,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:19:27,750 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 22:19:27,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:19:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:19:27,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:19:27,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:19:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-09-07 22:19:27,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:19:27,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:19:27,993 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:19:27,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:19:27,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:19:27,994 INFO L87 Difference]: Start difference. First operand 30336 states and 43733 transitions. Second operand 9 states. [2019-09-07 22:19:40,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:19:40,493 INFO L93 Difference]: Finished difference Result 94027 states and 176845 transitions. [2019-09-07 22:19:40,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 22:19:40,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 348 [2019-09-07 22:19:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:19:40,836 INFO L225 Difference]: With dead ends: 94027 [2019-09-07 22:19:40,836 INFO L226 Difference]: Without dead ends: 58334 [2019-09-07 22:19:40,984 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 355 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 22:19:41,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58334 states. [2019-09-07 22:19:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58334 to 57740. [2019-09-07 22:19:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57740 states. [2019-09-07 22:19:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57740 states to 57740 states and 86813 transitions. [2019-09-07 22:19:44,639 INFO L78 Accepts]: Start accepts. Automaton has 57740 states and 86813 transitions. Word has length 348 [2019-09-07 22:19:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:19:44,640 INFO L475 AbstractCegarLoop]: Abstraction has 57740 states and 86813 transitions. [2019-09-07 22:19:44,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:19:44,641 INFO L276 IsEmpty]: Start isEmpty. Operand 57740 states and 86813 transitions. [2019-09-07 22:19:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2019-09-07 22:19:44,659 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:19:44,659 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:44,660 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:19:44,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:19:44,660 INFO L82 PathProgramCache]: Analyzing trace with hash 188658952, now seen corresponding path program 1 times [2019-09-07 22:19:44,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:19:44,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:19:44,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:44,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:19:44,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:19:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 61 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:19:45,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:19:45,436 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 22:19:45,449 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 22:19:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:19:45,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:19:45,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:19:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-09-07 22:19:46,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:19:46,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-07 22:19:46,057 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:19:46,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:19:46,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:19:46,057 INFO L87 Difference]: Start difference. First operand 57740 states and 86813 transitions. Second operand 9 states. [2019-09-07 22:19:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:19:55,229 INFO L93 Difference]: Finished difference Result 130988 states and 198619 transitions. [2019-09-07 22:19:55,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 22:19:55,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 492 [2019-09-07 22:19:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:19:57,561 INFO L225 Difference]: With dead ends: 130988 [2019-09-07 22:19:57,562 INFO L226 Difference]: Without dead ends: 76792 [2019-09-07 22:19:57,700 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2019-09-07 22:19:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76792 states. [2019-09-07 22:19:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76792 to 70803. [2019-09-07 22:19:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70803 states. [2019-09-07 22:19:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70803 states to 70803 states and 98680 transitions. [2019-09-07 22:19:59,540 INFO L78 Accepts]: Start accepts. Automaton has 70803 states and 98680 transitions. Word has length 492 [2019-09-07 22:19:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:19:59,541 INFO L475 AbstractCegarLoop]: Abstraction has 70803 states and 98680 transitions. [2019-09-07 22:19:59,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:19:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 70803 states and 98680 transitions. [2019-09-07 22:19:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2019-09-07 22:19:59,562 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:19:59,563 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:19:59,563 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:19:59,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:19:59,564 INFO L82 PathProgramCache]: Analyzing trace with hash -197421744, now seen corresponding path program 1 times [2019-09-07 22:19:59,564 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:19:59,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:19:59,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:59,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:19:59,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:19:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:20:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 185 proven. 228 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:20:00,372 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:20:00,372 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 22:20:00,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:20:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:20:00,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:20:00,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:20:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-09-07 22:20:00,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:20:00,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 22:20:00,704 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 22:20:00,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 22:20:00,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:20:00,705 INFO L87 Difference]: Start difference. First operand 70803 states and 98680 transitions. Second operand 13 states. [2019-09-07 22:20:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:20:09,732 INFO L93 Difference]: Finished difference Result 143275 states and 219138 transitions. [2019-09-07 22:20:09,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 22:20:09,733 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 537 [2019-09-07 22:20:09,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:20:10,178 INFO L225 Difference]: With dead ends: 143275 [2019-09-07 22:20:10,179 INFO L226 Difference]: Without dead ends: 76016 [2019-09-07 22:20:10,394 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 551 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2019-09-07 22:20:10,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76016 states. [2019-09-07 22:20:14,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76016 to 70768. [2019-09-07 22:20:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70768 states. [2019-09-07 22:20:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70768 states to 70768 states and 92821 transitions. [2019-09-07 22:20:14,879 INFO L78 Accepts]: Start accepts. Automaton has 70768 states and 92821 transitions. Word has length 537 [2019-09-07 22:20:14,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:20:14,880 INFO L475 AbstractCegarLoop]: Abstraction has 70768 states and 92821 transitions. [2019-09-07 22:20:14,880 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 22:20:14,880 INFO L276 IsEmpty]: Start isEmpty. Operand 70768 states and 92821 transitions. [2019-09-07 22:20:14,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2019-09-07 22:20:14,895 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:20:14,896 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, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:14,896 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:20:14,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:20:14,897 INFO L82 PathProgramCache]: Analyzing trace with hash -16331196, now seen corresponding path program 1 times [2019-09-07 22:20:14,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:20:14,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:20:14,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:20:14,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:20:14,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:20:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:20:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2019-09-07 22:20:15,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:20:15,278 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 22:20:15,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:20:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:20:15,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:20:15,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:20:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2019-09-07 22:20:15,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:20:15,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:20:15,849 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:20:15,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:20:15,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:20:15,849 INFO L87 Difference]: Start difference. First operand 70768 states and 92821 transitions. Second operand 9 states. [2019-09-07 22:20:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:20:26,617 INFO L93 Difference]: Finished difference Result 164320 states and 286216 transitions. [2019-09-07 22:20:26,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 22:20:26,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 627 [2019-09-07 22:20:26,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:20:27,525 INFO L225 Difference]: With dead ends: 164320 [2019-09-07 22:20:27,525 INFO L226 Difference]: Without dead ends: 94264 [2019-09-07 22:20:27,843 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-09-07 22:20:27,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94264 states. [2019-09-07 22:20:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94264 to 89594. [2019-09-07 22:20:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89594 states. [2019-09-07 22:20:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89594 states to 89594 states and 147001 transitions. [2019-09-07 22:20:35,981 INFO L78 Accepts]: Start accepts. Automaton has 89594 states and 147001 transitions. Word has length 627 [2019-09-07 22:20:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:20:35,982 INFO L475 AbstractCegarLoop]: Abstraction has 89594 states and 147001 transitions. [2019-09-07 22:20:35,983 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:20:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 89594 states and 147001 transitions. [2019-09-07 22:20:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2019-09-07 22:20:35,996 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:20:35,997 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, 5, 5, 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, 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] [2019-09-07 22:20:35,997 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:20:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:20:35,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1437989051, now seen corresponding path program 1 times [2019-09-07 22:20:35,998 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:20:35,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:20:35,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:20:35,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:20:35,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:20:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:20:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2019-09-07 22:20:36,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:20:36,507 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 22:20:36,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:20:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:20:36,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:20:36,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:20:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2019-09-07 22:20:36,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:20:36,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:20:36,868 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:20:36,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:20:36,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:20:36,869 INFO L87 Difference]: Start difference. First operand 89594 states and 147001 transitions. Second operand 9 states. [2019-09-07 22:20:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:20:50,927 INFO L93 Difference]: Finished difference Result 218492 states and 440988 transitions. [2019-09-07 22:20:50,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 22:20:50,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 646 [2019-09-07 22:20:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:20:51,657 INFO L225 Difference]: With dead ends: 218492 [2019-09-07 22:20:51,657 INFO L226 Difference]: Without dead ends: 129610 [2019-09-07 22:20:51,943 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-09-07 22:20:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129610 states. [2019-09-07 22:20:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129610 to 129354. [2019-09-07 22:20:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129354 states. [2019-09-07 22:21:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129354 states to 129354 states and 278289 transitions. [2019-09-07 22:21:07,722 INFO L78 Accepts]: Start accepts. Automaton has 129354 states and 278289 transitions. Word has length 646 [2019-09-07 22:21:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:21:07,723 INFO L475 AbstractCegarLoop]: Abstraction has 129354 states and 278289 transitions. [2019-09-07 22:21:07,723 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:21:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 129354 states and 278289 transitions. [2019-09-07 22:21:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2019-09-07 22:21:07,731 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:21:07,732 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:07,732 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:21:07,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:21:07,733 INFO L82 PathProgramCache]: Analyzing trace with hash -57323179, now seen corresponding path program 1 times [2019-09-07 22:21:07,733 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:21:07,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:21:07,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:21:07,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:21:07,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:21:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:21:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-09-07 22:21:08,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:21:08,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:21:08,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:21:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:21:08,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:21:08,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:21:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-09-07 22:21:09,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:21:09,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:21:09,278 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:21:09,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:21:09,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:21:09,278 INFO L87 Difference]: Start difference. First operand 129354 states and 278289 transitions. Second operand 9 states. [2019-09-07 22:21:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:21:46,299 INFO L93 Difference]: Finished difference Result 355171 states and 982223 transitions. [2019-09-07 22:21:46,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 22:21:46,300 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 670 [2019-09-07 22:21:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:21:48,187 INFO L225 Difference]: With dead ends: 355171 [2019-09-07 22:21:48,188 INFO L226 Difference]: Without dead ends: 214228 [2019-09-07 22:21:55,505 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2019-09-07 22:21:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214228 states. [2019-09-07 22:22:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214228 to 209226. [2019-09-07 22:22:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209226 states. [2019-09-07 22:22:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209226 states to 209226 states and 506424 transitions. [2019-09-07 22:22:13,615 INFO L78 Accepts]: Start accepts. Automaton has 209226 states and 506424 transitions. Word has length 670 [2019-09-07 22:22:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:22:13,616 INFO L475 AbstractCegarLoop]: Abstraction has 209226 states and 506424 transitions. [2019-09-07 22:22:13,616 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:22:13,617 INFO L276 IsEmpty]: Start isEmpty. Operand 209226 states and 506424 transitions. [2019-09-07 22:22:13,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2019-09-07 22:22:13,626 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:22:13,627 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:22:13,627 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:22:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:22:13,628 INFO L82 PathProgramCache]: Analyzing trace with hash -438768824, now seen corresponding path program 1 times [2019-09-07 22:22:13,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:22:13,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:22:13,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:22:13,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:22:14,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:22:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:22:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 179 proven. 247 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2019-09-07 22:22:15,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:22:15,763 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 22:22:15,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:22:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:22:23,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:22:23,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:22:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2019-09-07 22:22:23,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:22:23,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-07 22:22:23,687 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:22:23,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:22:23,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:22:23,688 INFO L87 Difference]: Start difference. First operand 209226 states and 506424 transitions. Second operand 9 states. [2019-09-07 22:23:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:23:08,305 INFO L93 Difference]: Finished difference Result 480352 states and 1153934 transitions. [2019-09-07 22:23:08,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-07 22:23:08,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 757 [2019-09-07 22:23:08,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:23:08,349 INFO L225 Difference]: With dead ends: 480352 [2019-09-07 22:23:08,349 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 22:23:23,367 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 772 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2019-09-07 22:23:23,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 22:23:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 22:23:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 22:23:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 22:23:23,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 757 [2019-09-07 22:23:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:23:23,378 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 22:23:23,378 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:23:23,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 22:23:23,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 22:23:23,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 22:23:25,359 WARN L188 SmtUtils]: Spent 916.00 ms on a formula simplification that was a NOOP. DAG size: 34