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_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:25:49,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:25:49,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:25:49,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 22:25:49,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 22:25:49,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 22:25:49,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 22:25:49,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 22:25:49,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 22:25:49,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 22:25:49,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 22:25:49,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 22:25:49,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 22:25:49,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 22:25:49,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 22:25:49,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 22:25:49,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 22:25:49,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 22:25:49,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 22:25:49,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 22:25:49,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 22:25:49,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 22:25:49,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 22:25:49,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 22:25:49,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 22:25:49,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 22:25:49,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 22:25:49,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 22:25:49,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 22:25:49,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 22:25:49,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 22:25:49,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 22:25:49,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 22:25:49,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 22:25:49,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 22:25:49,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 22:25:49,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 22:25:49,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 22:25:49,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:25:49,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:25:49,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:25:49,847 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 22:25:49,861 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:25:49,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:25:49,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:25:49,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:25:49,863 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:25:49,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:25:49,864 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:25:49,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:25:49,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:25:49,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:25:49,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:25:49,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:25:49,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:25:49,865 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:25:49,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:25:49,866 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:25:49,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:25:49,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:25:49,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:25:49,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:25:49,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:25:49,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:25:49,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:25:49,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:25:49,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:25:49,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:25:49,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:25:49,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:25:49,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:25:49,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:25:49,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:25:49,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:25:49,915 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:25:49,916 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:25:49,916 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label14.c [2019-09-07 22:25:49,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/769fd0251/e9eb4d9dea1c48128144041795fef0e8/FLAGf7ec6ca16 [2019-09-07 22:25:50,720 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:25:50,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label14.c [2019-09-07 22:25:50,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/769fd0251/e9eb4d9dea1c48128144041795fef0e8/FLAGf7ec6ca16 [2019-09-07 22:25:50,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/769fd0251/e9eb4d9dea1c48128144041795fef0e8 [2019-09-07 22:25:50,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:25:50,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:25:50,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:25:50,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:25:50,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:25:50,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:25:50" (1/1) ... [2019-09-07 22:25:50,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6462166e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:50, skipping insertion in model container [2019-09-07 22:25:50,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:25:50" (1/1) ... [2019-09-07 22:25:50,883 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:25:51,011 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:25:52,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:25:52,295 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:25:52,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:25:52,780 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:25:52,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52 WrapperNode [2019-09-07 22:25:52,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:25:52,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:25:52,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:25:52,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:25:52,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52" (1/1) ... [2019-09-07 22:25:52,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52" (1/1) ... [2019-09-07 22:25:52,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52" (1/1) ... [2019-09-07 22:25:52,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52" (1/1) ... [2019-09-07 22:25:52,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52" (1/1) ... [2019-09-07 22:25:53,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52" (1/1) ... [2019-09-07 22:25:53,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52" (1/1) ... [2019-09-07 22:25:53,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:25:53,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:25:53,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:25:53,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:25:53,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52" (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 22:25:53,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:25:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:25:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:25:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:25:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 22:25:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:25:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:25:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:25:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 22:25:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:25:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:25:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:25:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:25:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:25:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:25:56,728 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:25:56,729 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:25:56,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:25:56 BoogieIcfgContainer [2019-09-07 22:25:56,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:25:56,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:25:56,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:25:56,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:25:56,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:25:50" (1/3) ... [2019-09-07 22:25:56,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268581e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:25:56, skipping insertion in model container [2019-09-07 22:25:56,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:25:52" (2/3) ... [2019-09-07 22:25:56,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268581e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:25:56, skipping insertion in model container [2019-09-07 22:25:56,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:25:56" (3/3) ... [2019-09-07 22:25:56,751 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label14.c [2019-09-07 22:25:56,764 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:25:56,777 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:25:56,796 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:25:56,858 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:25:56,859 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:25:56,860 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:25:56,860 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:25:56,860 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:25:56,860 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:25:56,861 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:25:56,861 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:25:56,861 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:25:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-09-07 22:25:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-07 22:25:56,925 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:25:56,926 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] [2019-09-07 22:25:56,928 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:25:56,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:25:56,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1001778367, now seen corresponding path program 1 times [2019-09-07 22:25:56,936 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:25:56,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:25:56,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:25:56,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:25:56,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:25:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:25:57,352 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 22:25:57,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:25:57,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:25:57,362 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:25:57,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:25:57,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:25:57,385 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-09-07 22:26:04,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:26:04,804 INFO L93 Difference]: Finished difference Result 2970 states and 5743 transitions. [2019-09-07 22:26:04,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:26:04,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-09-07 22:26:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:26:04,852 INFO L225 Difference]: With dead ends: 2970 [2019-09-07 22:26:04,852 INFO L226 Difference]: Without dead ends: 2114 [2019-09-07 22:26:04,866 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:26:04,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-09-07 22:26:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2019-09-07 22:26:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2019-09-07 22:26:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3476 transitions. [2019-09-07 22:26:05,042 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3476 transitions. Word has length 56 [2019-09-07 22:26:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:26:05,043 INFO L475 AbstractCegarLoop]: Abstraction has 2114 states and 3476 transitions. [2019-09-07 22:26:05,044 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:26:05,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3476 transitions. [2019-09-07 22:26:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-07 22:26:05,056 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:26:05,057 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, 1, 1, 1, 1, 1, 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 22:26:05,058 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:26:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:26:05,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1629917955, now seen corresponding path program 1 times [2019-09-07 22:26:05,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:26:05,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:26:05,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:05,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:05,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:26:05,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:26:05,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 22:26:05,209 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 22:26:05,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 22:26:05,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 22:26:05,210 INFO L87 Difference]: Start difference. First operand 2114 states and 3476 transitions. Second operand 5 states. [2019-09-07 22:26:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:26:11,165 INFO L93 Difference]: Finished difference Result 6436 states and 10709 transitions. [2019-09-07 22:26:11,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:26:11,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-09-07 22:26:11,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:26:11,198 INFO L225 Difference]: With dead ends: 6436 [2019-09-07 22:26:11,199 INFO L226 Difference]: Without dead ends: 4328 [2019-09-07 22:26:11,205 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:26:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2019-09-07 22:26:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4296. [2019-09-07 22:26:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2019-09-07 22:26:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6660 transitions. [2019-09-07 22:26:11,340 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6660 transitions. Word has length 125 [2019-09-07 22:26:11,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:26:11,342 INFO L475 AbstractCegarLoop]: Abstraction has 4296 states and 6660 transitions. [2019-09-07 22:26:11,343 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 22:26:11,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6660 transitions. [2019-09-07 22:26:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-09-07 22:26:11,352 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:26:11,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:11,352 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:26:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:26:11,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1553229448, now seen corresponding path program 1 times [2019-09-07 22:26:11,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:26:11,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:26:11,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:11,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:11,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:26:11,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:26:11,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:26:11,562 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:26:11,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:26:11,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:26:11,563 INFO L87 Difference]: Start difference. First operand 4296 states and 6660 transitions. Second operand 6 states. [2019-09-07 22:26:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:26:16,349 INFO L93 Difference]: Finished difference Result 10829 states and 16791 transitions. [2019-09-07 22:26:16,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:26:16,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2019-09-07 22:26:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:26:16,384 INFO L225 Difference]: With dead ends: 10829 [2019-09-07 22:26:16,384 INFO L226 Difference]: Without dead ends: 6539 [2019-09-07 22:26:16,394 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 22:26:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2019-09-07 22:26:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6505. [2019-09-07 22:26:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2019-09-07 22:26:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 8565 transitions. [2019-09-07 22:26:16,574 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 8565 transitions. Word has length 152 [2019-09-07 22:26:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:26:16,574 INFO L475 AbstractCegarLoop]: Abstraction has 6505 states and 8565 transitions. [2019-09-07 22:26:16,574 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:26:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 8565 transitions. [2019-09-07 22:26:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-09-07 22:26:16,578 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:26:16,579 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, 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] [2019-09-07 22:26:16,579 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:26:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:26:16,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1239287030, now seen corresponding path program 1 times [2019-09-07 22:26:16,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:26:16,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:26:16,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:16,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:16,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 22:26:16,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:26:16,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:26:16,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:26:16,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:26:16,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:26:16,732 INFO L87 Difference]: Start difference. First operand 6505 states and 8565 transitions. Second operand 4 states. [2019-09-07 22:26:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:26:23,246 INFO L93 Difference]: Finished difference Result 25814 states and 34919 transitions. [2019-09-07 22:26:23,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:26:23,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 231 [2019-09-07 22:26:23,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:26:23,334 INFO L225 Difference]: With dead ends: 25814 [2019-09-07 22:26:23,334 INFO L226 Difference]: Without dead ends: 19315 [2019-09-07 22:26:23,362 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:26:23,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19315 states. [2019-09-07 22:26:23,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19315 to 19315. [2019-09-07 22:26:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19315 states. [2019-09-07 22:26:23,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19315 states to 19315 states and 24530 transitions. [2019-09-07 22:26:23,803 INFO L78 Accepts]: Start accepts. Automaton has 19315 states and 24530 transitions. Word has length 231 [2019-09-07 22:26:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:26:23,805 INFO L475 AbstractCegarLoop]: Abstraction has 19315 states and 24530 transitions. [2019-09-07 22:26:23,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:26:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 19315 states and 24530 transitions. [2019-09-07 22:26:23,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-09-07 22:26:23,815 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:26:23,816 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:26:23,816 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:26:23,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:26:23,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1234575396, now seen corresponding path program 1 times [2019-09-07 22:26:23,817 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:26:23,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:26:23,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:23,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:23,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 222 proven. 73 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-09-07 22:26:24,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:26:24,095 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 22:26:24,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:24,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:26:24,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:26:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-09-07 22:26:24,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:26:24,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:26:24,539 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:26:24,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:26:24,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:26:24,543 INFO L87 Difference]: Start difference. First operand 19315 states and 24530 transitions. Second operand 9 states. [2019-09-07 22:26:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:26:36,774 INFO L93 Difference]: Finished difference Result 44312 states and 58098 transitions. [2019-09-07 22:26:36,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 22:26:36,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 332 [2019-09-07 22:26:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:26:36,967 INFO L225 Difference]: With dead ends: 44312 [2019-09-07 22:26:36,968 INFO L226 Difference]: Without dead ends: 25003 [2019-09-07 22:26:37,035 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:26:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25003 states. [2019-09-07 22:26:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25003 to 24933. [2019-09-07 22:26:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24933 states. [2019-09-07 22:26:37,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24933 states to 24933 states and 29888 transitions. [2019-09-07 22:26:37,869 INFO L78 Accepts]: Start accepts. Automaton has 24933 states and 29888 transitions. Word has length 332 [2019-09-07 22:26:37,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:26:37,870 INFO L475 AbstractCegarLoop]: Abstraction has 24933 states and 29888 transitions. [2019-09-07 22:26:37,870 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:26:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 24933 states and 29888 transitions. [2019-09-07 22:26:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2019-09-07 22:26:37,887 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:26:37,888 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:26:37,888 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:26:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:26:37,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1893982688, now seen corresponding path program 1 times [2019-09-07 22:26:37,889 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:26:37,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:26:37,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:37,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:37,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 299 proven. 164 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2019-09-07 22:26:39,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:26:39,049 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 22:26:39,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:39,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 22:26:39,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:26:39,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:26:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2019-09-07 22:26:39,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:26:39,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-09-07 22:26:39,647 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 22:26:39,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 22:26:39,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-09-07 22:26:39,647 INFO L87 Difference]: Start difference. First operand 24933 states and 29888 transitions. Second operand 15 states. [2019-09-07 22:26:52,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:26:52,081 INFO L93 Difference]: Finished difference Result 54149 states and 65490 transitions. [2019-09-07 22:26:52,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-09-07 22:26:52,082 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 425 [2019-09-07 22:26:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:26:52,187 INFO L225 Difference]: With dead ends: 54149 [2019-09-07 22:26:52,187 INFO L226 Difference]: Without dead ends: 30084 [2019-09-07 22:26:52,253 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=515, Invalid=2565, Unknown=0, NotChecked=0, Total=3080 [2019-09-07 22:26:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30084 states. [2019-09-07 22:26:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30084 to 29281. [2019-09-07 22:26:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29281 states. [2019-09-07 22:26:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29281 states to 29281 states and 32833 transitions. [2019-09-07 22:26:52,938 INFO L78 Accepts]: Start accepts. Automaton has 29281 states and 32833 transitions. Word has length 425 [2019-09-07 22:26:52,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:26:52,939 INFO L475 AbstractCegarLoop]: Abstraction has 29281 states and 32833 transitions. [2019-09-07 22:26:52,940 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 22:26:52,940 INFO L276 IsEmpty]: Start isEmpty. Operand 29281 states and 32833 transitions. [2019-09-07 22:26:52,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2019-09-07 22:26:52,967 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:26:52,968 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:52,968 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:26:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:26:52,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1103531336, now seen corresponding path program 1 times [2019-09-07 22:26:52,969 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:26:52,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:26:52,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:52,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:52,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 275 proven. 48 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 22:26:53,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:26:53,677 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 22:26:53,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:26:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:53,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 22:26:53,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:26:53,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:26:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-09-07 22:26:54,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:26:54,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 22:26:54,066 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 22:26:54,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 22:26:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-07 22:26:54,067 INFO L87 Difference]: Start difference. First operand 29281 states and 32833 transitions. Second operand 10 states. [2019-09-07 22:27:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:27:15,392 INFO L93 Difference]: Finished difference Result 116230 states and 137575 transitions. [2019-09-07 22:27:15,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-09-07 22:27:15,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 536 [2019-09-07 22:27:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:27:15,643 INFO L225 Difference]: With dead ends: 116230 [2019-09-07 22:27:15,643 INFO L226 Difference]: Without dead ends: 87437 [2019-09-07 22:27:15,711 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=620, Invalid=2686, Unknown=0, NotChecked=0, Total=3306 [2019-09-07 22:27:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87437 states. [2019-09-07 22:27:17,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87437 to 81729. [2019-09-07 22:27:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81729 states. [2019-09-07 22:27:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81729 states to 81729 states and 93219 transitions. [2019-09-07 22:27:17,492 INFO L78 Accepts]: Start accepts. Automaton has 81729 states and 93219 transitions. Word has length 536 [2019-09-07 22:27:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:27:17,493 INFO L475 AbstractCegarLoop]: Abstraction has 81729 states and 93219 transitions. [2019-09-07 22:27:17,493 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 22:27:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 81729 states and 93219 transitions. [2019-09-07 22:27:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2019-09-07 22:27:17,542 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:27:17,544 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:27:17,544 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:27:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:27:17,545 INFO L82 PathProgramCache]: Analyzing trace with hash -705349421, now seen corresponding path program 1 times [2019-09-07 22:27:17,545 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:27:17,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:27:17,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:27:17,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:27:17,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:27:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:27:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 522 proven. 102 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2019-09-07 22:27:20,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:27:20,016 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 22:27:20,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:27:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:27:20,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 22:27:20,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:27:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 663 proven. 2 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Stream Closed [2019-09-07 22:27:20,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:27:20,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-09-07 22:27:20,940 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 22:27:20,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 22:27:20,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 22:27:20,940 INFO L87 Difference]: Start difference. First operand 81729 states and 93219 transitions. Second operand 12 states. [2019-09-07 22:27:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:27:47,372 INFO L93 Difference]: Finished difference Result 208484 states and 242494 transitions. [2019-09-07 22:27:47,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2019-09-07 22:27:47,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1098 [2019-09-07 22:27:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:27:47,743 INFO L225 Difference]: With dead ends: 208484 [2019-09-07 22:27:47,744 INFO L226 Difference]: Without dead ends: 127449 [2019-09-07 22:27:47,907 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1255 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2688 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1126, Invalid=6184, Unknown=0, NotChecked=0, Total=7310 [2019-09-07 22:27:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127449 states. [2019-09-07 22:27:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127449 to 120340. [2019-09-07 22:27:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120340 states. [2019-09-07 22:27:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120340 states to 120340 states and 137086 transitions. [2019-09-07 22:27:54,307 INFO L78 Accepts]: Start accepts. Automaton has 120340 states and 137086 transitions. Word has length 1098 [2019-09-07 22:27:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:27:54,309 INFO L475 AbstractCegarLoop]: Abstraction has 120340 states and 137086 transitions. [2019-09-07 22:27:54,309 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 22:27:54,309 INFO L276 IsEmpty]: Start isEmpty. Operand 120340 states and 137086 transitions. [2019-09-07 22:27:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1242 [2019-09-07 22:27:54,369 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:27:54,370 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:27:54,370 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:27:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:27:54,371 INFO L82 PathProgramCache]: Analyzing trace with hash 105714927, now seen corresponding path program 1 times [2019-09-07 22:27:54,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:27:54,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:27:54,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:27:54,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:27:54,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:27:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:27:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 779 proven. 102 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2019-09-07 22:27:56,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:27:56,166 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 22:27:56,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:27:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:27:56,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 22:27:56,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:27:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 640 proven. 2 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2019-09-07 22:27:57,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:27:57,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-09-07 22:27:57,070 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 22:27:57,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 22:27:57,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 22:27:57,070 INFO L87 Difference]: Start difference. First operand 120340 states and 137086 transitions. Second operand 12 states. [2019-09-07 22:28:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:28:28,228 INFO L93 Difference]: Finished difference Result 308019 states and 357713 transitions. [2019-09-07 22:28:28,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-09-07 22:28:28,229 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1241 [2019-09-07 22:28:28,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:28:28,661 INFO L225 Difference]: With dead ends: 308019 [2019-09-07 22:28:28,661 INFO L226 Difference]: Without dead ends: 187406 [2019-09-07 22:28:28,799 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1407 GetRequests, 1317 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3116 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1269, Invalid=7103, Unknown=0, NotChecked=0, Total=8372 [2019-09-07 22:28:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187406 states. [2019-09-07 22:28:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187406 to 175314. [2019-09-07 22:28:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175314 states. [2019-09-07 22:28:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175314 states to 175314 states and 200235 transitions. [2019-09-07 22:28:31,759 INFO L78 Accepts]: Start accepts. Automaton has 175314 states and 200235 transitions. Word has length 1241 [2019-09-07 22:28:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:28:31,760 INFO L475 AbstractCegarLoop]: Abstraction has 175314 states and 200235 transitions. [2019-09-07 22:28:31,761 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 22:28:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 175314 states and 200235 transitions. [2019-09-07 22:28:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1249 [2019-09-07 22:28:31,784 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:28:31,785 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:28:31,786 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:28:31,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:28:31,786 INFO L82 PathProgramCache]: Analyzing trace with hash 365667720, now seen corresponding path program 1 times [2019-09-07 22:28:31,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:28:31,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:28:31,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:28:31,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:28:31,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:28:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:28:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1573 backedges. 717 proven. 2 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2019-09-07 22:28:36,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:28:36,111 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 22:28:36,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:28:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:28:36,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:28:36,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:28:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1573 backedges. 717 proven. 2 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2019-09-07 22:28:36,964 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:28:36,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:28:36,966 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:28:36,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:28:36,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:28:36,966 INFO L87 Difference]: Start difference. First operand 175314 states and 200235 transitions. Second operand 9 states. [2019-09-07 22:28:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:28:48,809 INFO L93 Difference]: Finished difference Result 370785 states and 448072 transitions. [2019-09-07 22:28:48,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 22:28:48,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1248 [2019-09-07 22:28:48,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:28:49,416 INFO L225 Difference]: With dead ends: 370785 [2019-09-07 22:28:49,416 INFO L226 Difference]: Without dead ends: 196881 [2019-09-07 22:28:49,632 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1265 GetRequests, 1252 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 22:28:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196881 states. [2019-09-07 22:28:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196881 to 193986. [2019-09-07 22:28:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193986 states. [2019-09-07 22:28:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193986 states to 193986 states and 234023 transitions. [2019-09-07 22:28:57,296 INFO L78 Accepts]: Start accepts. Automaton has 193986 states and 234023 transitions. Word has length 1248 [2019-09-07 22:28:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:28:57,297 INFO L475 AbstractCegarLoop]: Abstraction has 193986 states and 234023 transitions. [2019-09-07 22:28:57,297 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:28:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 193986 states and 234023 transitions. [2019-09-07 22:28:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1374 [2019-09-07 22:28:57,333 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:28:57,334 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:28:57,335 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:28:57,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:28:57,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1012203282, now seen corresponding path program 1 times [2019-09-07 22:28:57,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:28:57,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:28:57,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:28:57,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:28:57,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:28:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:29:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2240 backedges. 649 proven. 893 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2019-09-07 22:29:02,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:29:02,420 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:29:02,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:29:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:29:02,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:29:02,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:29:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2240 backedges. 1271 proven. 2 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2019-09-07 22:29:03,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:29:03,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 22:29:03,793 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 22:29:03,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 22:29:03,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-09-07 22:29:03,794 INFO L87 Difference]: Start difference. First operand 193986 states and 234023 transitions. Second operand 14 states. [2019-09-07 22:29:20,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:29:20,557 INFO L93 Difference]: Finished difference Result 387852 states and 468255 transitions. [2019-09-07 22:29:20,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-07 22:29:20,564 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1373 [2019-09-07 22:29:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:29:21,106 INFO L225 Difference]: With dead ends: 387852 [2019-09-07 22:29:21,107 INFO L226 Difference]: Without dead ends: 195806 [2019-09-07 22:29:21,364 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1438 GetRequests, 1399 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2019-09-07 22:29:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195806 states. [2019-09-07 22:29:24,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195806 to 180499. [2019-09-07 22:29:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180499 states. [2019-09-07 22:29:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180499 states to 180499 states and 205181 transitions. [2019-09-07 22:29:24,927 INFO L78 Accepts]: Start accepts. Automaton has 180499 states and 205181 transitions. Word has length 1373 [2019-09-07 22:29:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:29:24,929 INFO L475 AbstractCegarLoop]: Abstraction has 180499 states and 205181 transitions. [2019-09-07 22:29:24,929 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 22:29:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 180499 states and 205181 transitions. [2019-09-07 22:29:24,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1453 [2019-09-07 22:29:24,974 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:29:24,975 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:24,975 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:29:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:29:24,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1785253757, now seen corresponding path program 1 times [2019-09-07 22:29:24,976 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:29:24,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:29:24,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:29:24,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:29:24,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:29:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:29:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2351 backedges. 935 proven. 974 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2019-09-07 22:29:33,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:29:33,606 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:29:33,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:29:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:29:33,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 22:29:33,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:29:34,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:29:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2351 backedges. 1382 proven. 2 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2019-09-07 22:29:35,053 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:29:35,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 5] total 23 [2019-09-07 22:29:35,055 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-07 22:29:35,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-07 22:29:35,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2019-09-07 22:29:35,056 INFO L87 Difference]: Start difference. First operand 180499 states and 205181 transitions. Second operand 23 states. [2019-09-07 22:29:43,292 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-09-07 22:29:47,315 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-07 22:30:09,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:30:09,889 INFO L93 Difference]: Finished difference Result 355102 states and 405183 transitions. [2019-09-07 22:30:09,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2019-09-07 22:30:09,889 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1452 [2019-09-07 22:30:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:30:10,398 INFO L225 Difference]: With dead ends: 355102 [2019-09-07 22:30:10,398 INFO L226 Difference]: Without dead ends: 169258 [2019-09-07 22:30:10,697 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1629 GetRequests, 1523 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3902 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1804, Invalid=9752, Unknown=0, NotChecked=0, Total=11556 [2019-09-07 22:30:10,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169258 states. [2019-09-07 22:30:13,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169258 to 168220. [2019-09-07 22:30:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168220 states. [2019-09-07 22:30:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168220 states to 168220 states and 190969 transitions. [2019-09-07 22:30:13,457 INFO L78 Accepts]: Start accepts. Automaton has 168220 states and 190969 transitions. Word has length 1452 [2019-09-07 22:30:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:30:13,458 INFO L475 AbstractCegarLoop]: Abstraction has 168220 states and 190969 transitions. [2019-09-07 22:30:13,459 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-07 22:30:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 168220 states and 190969 transitions. [2019-09-07 22:30:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1497 [2019-09-07 22:30:14,011 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:30:14,012 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:14,013 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:30:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:30:14,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1170487902, now seen corresponding path program 1 times [2019-09-07 22:30:14,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:30:14,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:30:14,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:30:14,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:30:14,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:30:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:30:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2973 backedges. 791 proven. 903 refuted. 0 times theorem prover too weak. 1279 trivial. 0 not checked. [2019-09-07 22:30:16,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:30:16,105 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:30:16,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:30:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:30:16,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:30:16,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:30:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2973 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 2612 trivial. 0 not checked. [2019-09-07 22:30:17,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:30:17,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-07 22:30:17,956 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:30:17,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:30:17,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:30:17,957 INFO L87 Difference]: Start difference. First operand 168220 states and 190969 transitions. Second operand 9 states. [2019-09-07 22:30:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:30:29,013 INFO L93 Difference]: Finished difference Result 338078 states and 384114 transitions. [2019-09-07 22:30:29,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 22:30:29,013 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1496 [2019-09-07 22:30:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:30:29,462 INFO L225 Difference]: With dead ends: 338078 [2019-09-07 22:30:29,463 INFO L226 Difference]: Without dead ends: 176190 [2019-09-07 22:30:29,701 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1526 GetRequests, 1510 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2019-09-07 22:30:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176190 states. [2019-09-07 22:30:35,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176190 to 166709. [2019-09-07 22:30:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166709 states. [2019-09-07 22:30:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166709 states to 166709 states and 187446 transitions. [2019-09-07 22:30:36,140 INFO L78 Accepts]: Start accepts. Automaton has 166709 states and 187446 transitions. Word has length 1496 [2019-09-07 22:30:36,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:30:36,141 INFO L475 AbstractCegarLoop]: Abstraction has 166709 states and 187446 transitions. [2019-09-07 22:30:36,141 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:30:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 166709 states and 187446 transitions. [2019-09-07 22:30:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2019-09-07 22:30:36,170 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:30:36,171 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:30:36,171 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:30:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:30:36,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1269738446, now seen corresponding path program 1 times [2019-09-07 22:30:36,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:30:36,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:30:36,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:30:36,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:30:36,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:30:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:30:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 1381 proven. 534 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-09-07 22:30:43,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:30:43,519 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:30:43,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:30:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:30:43,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 30 conjunts are in the unsatisfiable core [2019-09-07 22:30:43,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:30:43,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:30:43,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:30:44,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:30:44,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:30:44,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:30:44,075 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:30:44,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:30:51,257 WARN L188 SmtUtils]: Spent 7.09 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-09-07 22:30:51,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:30:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 1267 proven. 202 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2019-09-07 22:30:53,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:30:53,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 23 [2019-09-07 22:30:53,397 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-07 22:30:53,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-07 22:30:53,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2019-09-07 22:30:53,398 INFO L87 Difference]: Start difference. First operand 166709 states and 187446 transitions. Second operand 23 states. [2019-09-07 22:31:05,579 WARN L188 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2019-09-07 22:31:17,151 WARN L188 SmtUtils]: Spent 9.92 s on a formula simplification that was a NOOP. DAG size: 56 [2019-09-07 22:31:18,733 WARN L188 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 54 [2019-09-07 22:31:20,360 WARN L188 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 44 [2019-09-07 22:31:28,237 WARN L188 SmtUtils]: Spent 7.52 s on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-07 22:31:36,019 WARN L188 SmtUtils]: Spent 7.35 s on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-07 22:31:45,926 WARN L188 SmtUtils]: Spent 9.43 s on a formula simplification that was a NOOP. DAG size: 54 [2019-09-07 22:31:57,842 WARN L188 SmtUtils]: Spent 10.08 s on a formula simplification that was a NOOP. DAG size: 54 [2019-09-07 22:32:15,902 WARN L188 SmtUtils]: Spent 17.66 s on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-07 22:32:24,116 WARN L188 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2019-09-07 22:32:34,439 WARN L188 SmtUtils]: Spent 9.98 s on a formula simplification that was a NOOP. DAG size: 44 [2019-09-07 22:32:43,860 WARN L188 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-07 22:32:52,628 WARN L188 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-07 22:33:00,658 WARN L188 SmtUtils]: Spent 6.85 s on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-07 22:33:08,816 WARN L188 SmtUtils]: Spent 8.03 s on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2019-09-07 22:33:17,200 WARN L188 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-07 22:33:38,992 WARN L188 SmtUtils]: Spent 19.28 s on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 22:33:48,297 WARN L188 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-07 22:33:56,494 WARN L188 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-07 22:33:56,825 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-07 22:34:05,575 WARN L188 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2019-09-07 22:34:05,943 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-07 22:34:14,713 WARN L188 SmtUtils]: Spent 7.04 s on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2019-09-07 22:34:23,809 WARN L188 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-07 22:34:33,998 WARN L188 SmtUtils]: Spent 10.07 s on a formula simplification that was a NOOP. DAG size: 50 [2019-09-07 22:34:42,875 WARN L188 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-07 22:34:43,036 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2019-09-07 22:34:51,573 WARN L188 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2019-09-07 22:35:00,196 WARN L188 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2019-09-07 22:35:08,412 WARN L188 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2019-09-07 22:35:08,717 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-07 22:35:16,881 WARN L188 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2019-09-07 22:35:25,607 WARN L188 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-07 22:35:46,183 WARN L188 SmtUtils]: Spent 20.09 s on a formula simplification that was a NOOP. DAG size: 43 [2019-09-07 22:35:54,256 WARN L188 SmtUtils]: Spent 7.65 s on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2019-09-07 22:36:03,124 WARN L188 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-07 22:36:10,548 WARN L188 SmtUtils]: Spent 7.33 s on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-07 22:36:18,708 WARN L188 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2019-09-07 22:36:27,171 WARN L188 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 87 DAG size of output: 42 [2019-09-07 22:36:27,727 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2019-09-07 22:36:37,142 WARN L188 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-09-07 22:36:47,875 WARN L188 SmtUtils]: Spent 10.08 s on a formula simplification that was a NOOP. DAG size: 50 [2019-09-07 22:36:48,141 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-07 22:36:48,655 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-07 22:36:58,610 WARN L188 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-09-07 22:37:07,036 WARN L188 SmtUtils]: Spent 8.14 s on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-09-07 22:37:15,233 WARN L188 SmtUtils]: Spent 7.63 s on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-07 22:37:23,496 WARN L188 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2019-09-07 22:37:31,699 WARN L188 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2019-09-07 22:37:40,206 WARN L188 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2019-09-07 22:37:48,495 WARN L188 SmtUtils]: Spent 6.84 s on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2019-09-07 22:37:56,750 WARN L188 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2019-09-07 22:38:05,176 WARN L188 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-09-07 22:38:13,396 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2019-09-07 22:38:23,217 WARN L188 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2019-09-07 22:38:30,337 WARN L188 SmtUtils]: Spent 6.86 s on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2019-09-07 22:38:39,364 WARN L188 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-07 22:38:46,514 WARN L188 SmtUtils]: Spent 7.03 s on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2019-09-07 22:38:56,331 WARN L188 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 52 DAG size of output: 40