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/loops/vogal-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:22:26,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:22:26,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:22:26,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:22:26,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:22:26,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:22:26,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:22:26,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:22:26,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:22:26,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:22:26,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:22:26,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:22:26,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:22:26,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:22:26,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:22:26,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:22:26,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:22:26,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:22:26,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:22:26,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:22:26,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:22:26,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:22:26,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:22:26,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:22:26,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-03 19:22:26,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-03 19:22:26,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-03 19:22:26,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-03 19:22:26,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-03 19:22:26,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-03 19:22:26,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 19:22:26,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 19:22:26,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 19:22:26,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 19:22:26,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 19:22:26,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 19:22:26,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 19:22:26,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 19:22:26,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:22:26,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:22:26,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:22:26,701 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 [2019-09-03 19:22:26,727 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:22:26,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:22:26,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:22:26,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:22:26,730 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:22:26,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:22:26,731 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:22:26,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:22:26,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:22:26,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:22:26,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:22:26,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:22:26,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:22:26,733 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:22:26,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:22:26,733 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:22:26,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:22:26,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:22:26,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:22:26,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:22:26,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:22:26,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:22:26,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:22:26,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:22:26,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:22:26,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:22:26,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:22:26,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:22:26,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:22:26,799 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:22:26,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:22:26,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:22:26,825 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:22:26,826 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:22:26,827 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/vogal-2.i [2019-09-03 19:22:26,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddafb1537/439911d9bad74d51a3c07ba6c460f644/FLAG1d4016f0e [2019-09-03 19:22:27,351 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:22:27,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-2.i [2019-09-03 19:22:27,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddafb1537/439911d9bad74d51a3c07ba6c460f644/FLAG1d4016f0e [2019-09-03 19:22:27,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddafb1537/439911d9bad74d51a3c07ba6c460f644 [2019-09-03 19:22:27,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:22:27,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:22:27,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:22:27,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:22:27,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:22:27,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:22:27" (1/1) ... [2019-09-03 19:22:27,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0d77d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:27, skipping insertion in model container [2019-09-03 19:22:27,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:22:27" (1/1) ... [2019-09-03 19:22:27,769 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:22:27,794 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:22:28,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:22:28,065 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:22:28,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:22:28,201 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:22:28,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28 WrapperNode [2019-09-03 19:22:28,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:22:28,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:22:28,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:22:28,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:22:28,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28" (1/1) ... [2019-09-03 19:22:28,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28" (1/1) ... [2019-09-03 19:22:28,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28" (1/1) ... [2019-09-03 19:22:28,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28" (1/1) ... [2019-09-03 19:22:28,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28" (1/1) ... [2019-09-03 19:22:28,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28" (1/1) ... [2019-09-03 19:22:28,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28" (1/1) ... [2019-09-03 19:22:28,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:22:28,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:22:28,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:22:28,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:22:28,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28" (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 [2019-09-03 19:22:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:22:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:22:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:22:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:22:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:22:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:22:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-03 19:22:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:22:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 19:22:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-03 19:22:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 19:22:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 19:22:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 19:22:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:22:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:22:28,635 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:22:28,635 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-03 19:22:28,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:22:28 BoogieIcfgContainer [2019-09-03 19:22:28,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:22:28,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:22:28,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:22:28,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:22:28,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:22:27" (1/3) ... [2019-09-03 19:22:28,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b8f98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:22:28, skipping insertion in model container [2019-09-03 19:22:28,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:22:28" (2/3) ... [2019-09-03 19:22:28,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b8f98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:22:28, skipping insertion in model container [2019-09-03 19:22:28,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:22:28" (3/3) ... [2019-09-03 19:22:28,648 INFO L109 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2019-09-03 19:22:28,657 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:22:28,664 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:22:28,680 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:22:28,705 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:22:28,705 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:22:28,706 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:22:28,706 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:22:28,706 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:22:28,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:22:28,706 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:22:28,706 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:22:28,706 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:22:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-09-03 19:22:28,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-03 19:22:28,727 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:28,728 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:28,730 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:28,736 INFO L82 PathProgramCache]: Analyzing trace with hash 907546272, now seen corresponding path program 1 times [2019-09-03 19:22:28,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:28,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:28,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:28,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:28,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:22:28,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:22:28,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 19:22:28,918 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 19:22:28,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 19:22:28,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:22:28,935 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-09-03 19:22:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:28,963 INFO L93 Difference]: Finished difference Result 64 states and 91 transitions. [2019-09-03 19:22:28,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 19:22:28,964 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-03 19:22:28,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:28,975 INFO L225 Difference]: With dead ends: 64 [2019-09-03 19:22:28,975 INFO L226 Difference]: Without dead ends: 29 [2019-09-03 19:22:28,982 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:22:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-03 19:22:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-03 19:22:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-03 19:22:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2019-09-03 19:22:29,026 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2019-09-03 19:22:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:29,027 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-09-03 19:22:29,027 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 19:22:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2019-09-03 19:22:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 19:22:29,030 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:29,030 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:29,031 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1455815888, now seen corresponding path program 1 times [2019-09-03 19:22:29,033 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:29,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:29,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:29,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:29,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:22:29,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:22:29,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 19:22:29,138 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 19:22:29,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 19:22:29,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 19:22:29,139 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 3 states. [2019-09-03 19:22:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:29,204 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2019-09-03 19:22:29,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 19:22:29,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-09-03 19:22:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:29,208 INFO L225 Difference]: With dead ends: 65 [2019-09-03 19:22:29,208 INFO L226 Difference]: Without dead ends: 44 [2019-09-03 19:22:29,209 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 19:22:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-03 19:22:29,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2019-09-03 19:22:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-03 19:22:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-09-03 19:22:29,218 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 19 [2019-09-03 19:22:29,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:29,219 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-09-03 19:22:29,219 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 19:22:29,219 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-09-03 19:22:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-03 19:22:29,220 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:29,220 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] [2019-09-03 19:22:29,221 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:29,221 INFO L82 PathProgramCache]: Analyzing trace with hash -941161554, now seen corresponding path program 1 times [2019-09-03 19:22:29,221 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:29,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:29,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:29,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:29,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:22:29,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:29,345 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 [2019-09-03 19:22:29,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:29,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-03 19:22:29,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-03 19:22:29,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 19:22:29,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2019-09-03 19:22:29,513 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-03 19:22:29,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-03 19:22:29,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-03 19:22:29,515 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 8 states. [2019-09-03 19:22:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:29,842 INFO L93 Difference]: Finished difference Result 137 states and 188 transitions. [2019-09-03 19:22:29,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-03 19:22:29,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-09-03 19:22:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:29,845 INFO L225 Difference]: With dead ends: 137 [2019-09-03 19:22:29,845 INFO L226 Difference]: Without dead ends: 111 [2019-09-03 19:22:29,846 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-09-03 19:22:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-09-03 19:22:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 44. [2019-09-03 19:22:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-03 19:22:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2019-09-03 19:22:29,857 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 21 [2019-09-03 19:22:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:29,858 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2019-09-03 19:22:29,858 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-03 19:22:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2019-09-03 19:22:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-03 19:22:29,859 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:29,860 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:29,860 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:29,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2022961947, now seen corresponding path program 1 times [2019-09-03 19:22:29,861 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:29,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:29,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:29,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:29,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-03 19:22:30,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:30,041 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 [2019-09-03 19:22:30,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:30,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-03 19:22:30,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-03 19:22:30,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 19:22:30,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-09-03 19:22:30,131 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-03 19:22:30,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-03 19:22:30,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-03 19:22:30,132 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 7 states. [2019-09-03 19:22:30,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:30,341 INFO L93 Difference]: Finished difference Result 207 states and 284 transitions. [2019-09-03 19:22:30,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-03 19:22:30,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-09-03 19:22:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:30,345 INFO L225 Difference]: With dead ends: 207 [2019-09-03 19:22:30,346 INFO L226 Difference]: Without dead ends: 174 [2019-09-03 19:22:30,346 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-03 19:22:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-09-03 19:22:30,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 50. [2019-09-03 19:22:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-09-03 19:22:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2019-09-03 19:22:30,358 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 29 [2019-09-03 19:22:30,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:30,359 INFO L475 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2019-09-03 19:22:30,359 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-03 19:22:30,359 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2019-09-03 19:22:30,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-03 19:22:30,360 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:30,360 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:30,361 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:30,361 INFO L82 PathProgramCache]: Analyzing trace with hash -38007360, now seen corresponding path program 1 times [2019-09-03 19:22:30,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:30,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:30,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:30,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:30,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-03 19:22:30,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:30,510 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) [2019-09-03 19:22:30,529 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 [2019-09-03 19:22:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:30,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-03 19:22:30,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-03 19:22:30,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:30,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-09-03 19:22:30,623 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-03 19:22:30,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-03 19:22:30,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-03 19:22:30,624 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand 8 states. [2019-09-03 19:22:31,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:31,037 INFO L93 Difference]: Finished difference Result 306 states and 453 transitions. [2019-09-03 19:22:31,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-03 19:22:31,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-09-03 19:22:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:31,040 INFO L225 Difference]: With dead ends: 306 [2019-09-03 19:22:31,040 INFO L226 Difference]: Without dead ends: 269 [2019-09-03 19:22:31,041 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-09-03 19:22:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-09-03 19:22:31,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 68. [2019-09-03 19:22:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-09-03 19:22:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2019-09-03 19:22:31,067 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 32 [2019-09-03 19:22:31,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:31,067 INFO L475 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2019-09-03 19:22:31,067 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-03 19:22:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2019-09-03 19:22:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-03 19:22:31,072 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:31,072 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 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] [2019-09-03 19:22:31,073 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:31,073 INFO L82 PathProgramCache]: Analyzing trace with hash -165054150, now seen corresponding path program 2 times [2019-09-03 19:22:31,073 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:31,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:31,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:31,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:31,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-03 19:22:31,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:31,254 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 [2019-09-03 19:22:31,284 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-03 19:22:31,322 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 19:22:31,323 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:22:31,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-03 19:22:31,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-03 19:22:31,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:31,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2019-09-03 19:22:31,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-03 19:22:31,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-03 19:22:31,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-03 19:22:31,377 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand 10 states. [2019-09-03 19:22:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:32,117 INFO L93 Difference]: Finished difference Result 445 states and 624 transitions. [2019-09-03 19:22:32,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-03 19:22:32,117 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-09-03 19:22:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:32,124 INFO L225 Difference]: With dead ends: 445 [2019-09-03 19:22:32,124 INFO L226 Difference]: Without dead ends: 392 [2019-09-03 19:22:32,128 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2019-09-03 19:22:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2019-09-03 19:22:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 82. [2019-09-03 19:22:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-09-03 19:22:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2019-09-03 19:22:32,158 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 37 [2019-09-03 19:22:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:32,158 INFO L475 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2019-09-03 19:22:32,158 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-03 19:22:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2019-09-03 19:22:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-03 19:22:32,159 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:32,160 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:32,160 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:32,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:32,160 INFO L82 PathProgramCache]: Analyzing trace with hash -978671484, now seen corresponding path program 3 times [2019-09-03 19:22:32,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:32,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:32,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:32,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:22:32,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-03 19:22:32,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:32,279 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:22:32,301 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:32,330 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-03 19:22:32,331 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:22:32,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-03 19:22:32,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:32,477 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-09-03 19:22:32,478 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:22:32,482 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:22:32,483 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:22:32,483 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-03 19:22:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-03 19:22:32,508 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:32,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2019-09-03 19:22:32,509 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-03 19:22:32,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-03 19:22:32,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-09-03 19:22:32,510 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand 15 states. [2019-09-03 19:22:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:33,153 INFO L93 Difference]: Finished difference Result 467 states and 621 transitions. [2019-09-03 19:22:33,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-03 19:22:33,154 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2019-09-03 19:22:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:33,157 INFO L225 Difference]: With dead ends: 467 [2019-09-03 19:22:33,157 INFO L226 Difference]: Without dead ends: 397 [2019-09-03 19:22:33,160 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2019-09-03 19:22:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2019-09-03 19:22:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 82. [2019-09-03 19:22:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-09-03 19:22:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2019-09-03 19:22:33,181 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 42 [2019-09-03 19:22:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:33,183 INFO L475 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2019-09-03 19:22:33,183 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-03 19:22:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2019-09-03 19:22:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-03 19:22:33,184 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:33,184 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:33,184 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:33,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:33,185 INFO L82 PathProgramCache]: Analyzing trace with hash -124017128, now seen corresponding path program 1 times [2019-09-03 19:22:33,185 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:33,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:33,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:33,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:22:33,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-03 19:22:33,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:33,311 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:22:33,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:33,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-03 19:22:33,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:33,478 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-09-03 19:22:33,479 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:22:33,480 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:22:33,481 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:22:33,481 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-09-03 19:22:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-03 19:22:33,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:33,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-09-03 19:22:33,504 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-03 19:22:33,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-03 19:22:33,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-09-03 19:22:33,505 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand 16 states. [2019-09-03 19:22:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:34,523 INFO L93 Difference]: Finished difference Result 514 states and 685 transitions. [2019-09-03 19:22:34,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-03 19:22:34,523 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2019-09-03 19:22:34,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:34,526 INFO L225 Difference]: With dead ends: 514 [2019-09-03 19:22:34,526 INFO L226 Difference]: Without dead ends: 451 [2019-09-03 19:22:34,527 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2019-09-03 19:22:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-09-03 19:22:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 86. [2019-09-03 19:22:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-09-03 19:22:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2019-09-03 19:22:34,541 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 45 [2019-09-03 19:22:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:34,542 INFO L475 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2019-09-03 19:22:34,542 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-03 19:22:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2019-09-03 19:22:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-03 19:22:34,543 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:34,543 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:34,543 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:34,544 INFO L82 PathProgramCache]: Analyzing trace with hash 767730701, now seen corresponding path program 1 times [2019-09-03 19:22:34,544 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:34,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:34,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:34,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:34,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-03 19:22:34,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:34,691 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 [2019-09-03 19:22:34,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:34,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-03 19:22:34,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-03 19:22:34,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:34,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2019-09-03 19:22:34,816 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-03 19:22:34,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-03 19:22:34,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-09-03 19:22:34,817 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand 14 states. [2019-09-03 19:22:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:36,704 INFO L93 Difference]: Finished difference Result 751 states and 1048 transitions. [2019-09-03 19:22:36,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-03 19:22:36,705 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2019-09-03 19:22:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:36,708 INFO L225 Difference]: With dead ends: 751 [2019-09-03 19:22:36,708 INFO L226 Difference]: Without dead ends: 686 [2019-09-03 19:22:36,709 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=1854, Unknown=0, NotChecked=0, Total=2070 [2019-09-03 19:22:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2019-09-03 19:22:36,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 100. [2019-09-03 19:22:36,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-09-03 19:22:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2019-09-03 19:22:36,727 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 48 [2019-09-03 19:22:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:36,727 INFO L475 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2019-09-03 19:22:36,728 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-03 19:22:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2019-09-03 19:22:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-03 19:22:36,729 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:36,729 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:36,729 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:36,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:36,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1548703795, now seen corresponding path program 2 times [2019-09-03 19:22:36,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:36,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:36,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:36,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:36,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:36,880 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-03 19:22:36,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:36,881 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) [2019-09-03 19:22:36,895 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:36,953 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 19:22:36,953 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:22:36,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-03 19:22:36,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 74 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-03 19:22:37,053 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:37,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 16 [2019-09-03 19:22:37,053 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-03 19:22:37,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-03 19:22:37,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-09-03 19:22:37,054 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand 16 states. [2019-09-03 19:22:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:39,897 INFO L93 Difference]: Finished difference Result 958 states and 1330 transitions. [2019-09-03 19:22:39,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-03 19:22:39,897 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2019-09-03 19:22:39,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:39,903 INFO L225 Difference]: With dead ends: 958 [2019-09-03 19:22:39,903 INFO L226 Difference]: Without dead ends: 881 [2019-09-03 19:22:39,905 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=297, Invalid=3363, Unknown=0, NotChecked=0, Total=3660 [2019-09-03 19:22:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-09-03 19:22:39,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 114. [2019-09-03 19:22:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-09-03 19:22:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 142 transitions. [2019-09-03 19:22:39,924 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 142 transitions. Word has length 53 [2019-09-03 19:22:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:39,925 INFO L475 AbstractCegarLoop]: Abstraction has 114 states and 142 transitions. [2019-09-03 19:22:39,925 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-03 19:22:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 142 transitions. [2019-09-03 19:22:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-03 19:22:39,926 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:39,926 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:39,926 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:39,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:39,927 INFO L82 PathProgramCache]: Analyzing trace with hash 417827089, now seen corresponding path program 3 times [2019-09-03 19:22:39,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:39,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:39,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:39,928 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:22:39,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-09-03 19:22:40,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:40,116 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:22:40,131 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:40,161 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-03 19:22:40,161 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:22:40,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-03 19:22:40,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2019-09-03 19:22:40,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:40,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2019-09-03 19:22:40,356 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-03 19:22:40,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-03 19:22:40,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-09-03 19:22:40,358 INFO L87 Difference]: Start difference. First operand 114 states and 142 transitions. Second operand 19 states. [2019-09-03 19:22:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:42,137 INFO L93 Difference]: Finished difference Result 1437 states and 1917 transitions. [2019-09-03 19:22:42,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-03 19:22:42,137 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2019-09-03 19:22:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:42,144 INFO L225 Difference]: With dead ends: 1437 [2019-09-03 19:22:42,144 INFO L226 Difference]: Without dead ends: 1348 [2019-09-03 19:22:42,145 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2019-09-03 19:22:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2019-09-03 19:22:42,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 154. [2019-09-03 19:22:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-09-03 19:22:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2019-09-03 19:22:42,175 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 58 [2019-09-03 19:22:42,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:42,175 INFO L475 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2019-09-03 19:22:42,175 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-03 19:22:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2019-09-03 19:22:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-03 19:22:42,176 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:42,176 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:42,177 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:42,177 INFO L82 PathProgramCache]: Analyzing trace with hash -583840968, now seen corresponding path program 4 times [2019-09-03 19:22:42,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:42,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:42,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:42,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:22:42,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-03 19:22:42,284 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:42,285 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) [2019-09-03 19:22:42,306 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:42,367 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-03 19:22:42,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:22:42,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-03 19:22:42,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 2 proven. 115 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-03 19:22:42,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:42,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 15 [2019-09-03 19:22:42,540 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-03 19:22:42,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-03 19:22:42,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2019-09-03 19:22:42,541 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand 15 states. [2019-09-03 19:22:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:44,652 INFO L93 Difference]: Finished difference Result 846 states and 1161 transitions. [2019-09-03 19:22:44,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-03 19:22:44,652 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2019-09-03 19:22:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:44,656 INFO L225 Difference]: With dead ends: 846 [2019-09-03 19:22:44,656 INFO L226 Difference]: Without dead ends: 759 [2019-09-03 19:22:44,657 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=2337, Unknown=0, NotChecked=0, Total=2550 [2019-09-03 19:22:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-09-03 19:22:44,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 172. [2019-09-03 19:22:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-09-03 19:22:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 218 transitions. [2019-09-03 19:22:44,685 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 218 transitions. Word has length 62 [2019-09-03 19:22:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:44,685 INFO L475 AbstractCegarLoop]: Abstraction has 172 states and 218 transitions. [2019-09-03 19:22:44,686 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-03 19:22:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 218 transitions. [2019-09-03 19:22:44,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-03 19:22:44,687 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:44,687 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:44,687 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:44,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:44,688 INFO L82 PathProgramCache]: Analyzing trace with hash -308273692, now seen corresponding path program 5 times [2019-09-03 19:22:44,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:44,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:44,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:44,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:22:44,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-03 19:22:44,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:44,821 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:44,840 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-03 19:22:47,218 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-09-03 19:22:47,218 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:22:47,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-03 19:22:47,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-03 19:22:47,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:47,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-09-03 19:22:47,279 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-03 19:22:47,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-03 19:22:47,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-09-03 19:22:47,279 INFO L87 Difference]: Start difference. First operand 172 states and 218 transitions. Second operand 10 states. [2019-09-03 19:22:47,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:47,486 INFO L93 Difference]: Finished difference Result 301 states and 395 transitions. [2019-09-03 19:22:47,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-03 19:22:47,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2019-09-03 19:22:47,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:47,488 INFO L225 Difference]: With dead ends: 301 [2019-09-03 19:22:47,488 INFO L226 Difference]: Without dead ends: 202 [2019-09-03 19:22:47,489 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-09-03 19:22:47,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-09-03 19:22:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 190. [2019-09-03 19:22:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-09-03 19:22:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 242 transitions. [2019-09-03 19:22:47,521 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 242 transitions. Word has length 65 [2019-09-03 19:22:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:47,522 INFO L475 AbstractCegarLoop]: Abstraction has 190 states and 242 transitions. [2019-09-03 19:22:47,523 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-03 19:22:47,523 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 242 transitions. [2019-09-03 19:22:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-03 19:22:47,524 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:47,524 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:22:47,525 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:47,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1433942968, now seen corresponding path program 6 times [2019-09-03 19:22:47,525 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:47,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:47,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:47,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:22:47,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-03 19:22:47,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:47,786 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:22:47,807 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:47,861 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-09-03 19:22:47,861 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:22:47,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-03 19:22:47,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:48,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:22:48,138 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-03 19:22:48,140 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:22:48,141 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-09-03 19:22:48,141 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:22:48,150 INFO L567 ElimStorePlain]: treesize reduction 5, result has 64.3 percent of original size [2019-09-03 19:22:48,151 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:22:48,151 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:3 [2019-09-03 19:22:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-09-03 19:22:48,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 19:22:48,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2019-09-03 19:22:48,179 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-03 19:22:48,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-03 19:22:48,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-09-03 19:22:48,180 INFO L87 Difference]: Start difference. First operand 190 states and 242 transitions. Second operand 17 states. [2019-09-03 19:22:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:49,473 INFO L93 Difference]: Finished difference Result 447 states and 595 transitions. [2019-09-03 19:22:49,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-03 19:22:49,474 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 68 [2019-09-03 19:22:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:49,475 INFO L225 Difference]: With dead ends: 447 [2019-09-03 19:22:49,475 INFO L226 Difference]: Without dead ends: 333 [2019-09-03 19:22:49,476 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=192, Invalid=998, Unknown=0, NotChecked=0, Total=1190 [2019-09-03 19:22:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2019-09-03 19:22:49,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 209. [2019-09-03 19:22:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2019-09-03 19:22:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 267 transitions. [2019-09-03 19:22:49,506 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 267 transitions. Word has length 68 [2019-09-03 19:22:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:49,507 INFO L475 AbstractCegarLoop]: Abstraction has 209 states and 267 transitions. [2019-09-03 19:22:49,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-03 19:22:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 267 transitions. [2019-09-03 19:22:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-03 19:22:49,508 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:49,508 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 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] [2019-09-03 19:22:49,508 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:49,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1283842895, now seen corresponding path program 1 times [2019-09-03 19:22:49,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:49,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:49,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:49,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:22:49,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 2 proven. 92 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-09-03 19:22:49,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:49,773 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:49,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:49,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 38 conjunts are in the unsatisfiable core [2019-09-03 19:22:49,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 2 proven. 190 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-09-03 19:22:50,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:50,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 21 [2019-09-03 19:22:50,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-03 19:22:50,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-03 19:22:50,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2019-09-03 19:22:50,081 INFO L87 Difference]: Start difference. First operand 209 states and 267 transitions. Second operand 21 states. [2019-09-03 19:22:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:22:55,850 INFO L93 Difference]: Finished difference Result 1446 states and 1953 transitions. [2019-09-03 19:22:55,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2019-09-03 19:22:55,851 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 96 [2019-09-03 19:22:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:22:55,856 INFO L225 Difference]: With dead ends: 1446 [2019-09-03 19:22:55,856 INFO L226 Difference]: Without dead ends: 1317 [2019-09-03 19:22:55,860 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=453, Invalid=9849, Unknown=0, NotChecked=0, Total=10302 [2019-09-03 19:22:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2019-09-03 19:22:55,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 215. [2019-09-03 19:22:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2019-09-03 19:22:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 271 transitions. [2019-09-03 19:22:55,901 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 271 transitions. Word has length 96 [2019-09-03 19:22:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:22:55,901 INFO L475 AbstractCegarLoop]: Abstraction has 215 states and 271 transitions. [2019-09-03 19:22:55,902 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-03 19:22:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 271 transitions. [2019-09-03 19:22:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-03 19:22:55,903 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:22:55,903 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 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] [2019-09-03 19:22:55,903 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:22:55,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:22:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1439630739, now seen corresponding path program 2 times [2019-09-03 19:22:55,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:22:55,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:22:55,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:55,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:22:55,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:22:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:22:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-09-03 19:22:56,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:22:56,103 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:22:56,122 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:22:56,229 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 19:22:56,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:22:56,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-03 19:22:56,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:22:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 2 proven. 217 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-09-03 19:22:56,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:22:56,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22] total 23 [2019-09-03 19:22:56,472 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-03 19:22:56,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-03 19:22:56,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2019-09-03 19:22:56,473 INFO L87 Difference]: Start difference. First operand 215 states and 271 transitions. Second operand 23 states. [2019-09-03 19:23:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:23:04,012 INFO L93 Difference]: Finished difference Result 1574 states and 2102 transitions. [2019-09-03 19:23:04,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2019-09-03 19:23:04,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 99 [2019-09-03 19:23:04,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:23:04,019 INFO L225 Difference]: With dead ends: 1574 [2019-09-03 19:23:04,019 INFO L226 Difference]: Without dead ends: 1507 [2019-09-03 19:23:04,024 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4963 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=553, Invalid=14453, Unknown=0, NotChecked=0, Total=15006 [2019-09-03 19:23:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2019-09-03 19:23:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 221. [2019-09-03 19:23:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-09-03 19:23:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 279 transitions. [2019-09-03 19:23:04,074 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 279 transitions. Word has length 99 [2019-09-03 19:23:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:23:04,074 INFO L475 AbstractCegarLoop]: Abstraction has 221 states and 279 transitions. [2019-09-03 19:23:04,074 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-03 19:23:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 279 transitions. [2019-09-03 19:23:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-03 19:23:04,075 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:23:04,076 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 8, 8, 8, 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] [2019-09-03 19:23:04,076 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:23:04,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:23:04,076 INFO L82 PathProgramCache]: Analyzing trace with hash -215472497, now seen corresponding path program 3 times [2019-09-03 19:23:04,076 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:23:04,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:23:04,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:23:04,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:23:04,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:23:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:23:04,688 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 37 [2019-09-03 19:23:04,819 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 41 [2019-09-03 19:23:05,160 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 50 [2019-09-03 19:23:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 75 proven. 57 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-09-03 19:23:05,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:23:05,306 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:23:05,334 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:23:05,862 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-09-03 19:23:05,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 19:23:05,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 72 conjunts are in the unsatisfiable core [2019-09-03 19:23:05,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:23:05,877 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-09-03 19:23:05,877 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:05,887 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:23:05,887 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:05,888 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2019-09-03 19:23:05,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:05,929 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:05,941 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-09-03 19:23:05,942 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:05,945 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:05,946 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:05,972 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.2 percent of original size [2019-09-03 19:23:05,973 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:05,973 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:27 [2019-09-03 19:23:06,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:06,026 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:06,027 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,031 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,032 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-09-03 19:23:06,033 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,056 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.2 percent of original size [2019-09-03 19:23:06,056 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,057 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:27 [2019-09-03 19:23:06,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:06,099 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,107 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2019-09-03 19:23:06,109 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,112 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:06,113 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,142 INFO L567 ElimStorePlain]: treesize reduction 10, result has 79.2 percent of original size [2019-09-03 19:23:06,143 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,143 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:107, output treesize:27 [2019-09-03 19:23:06,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:06,200 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,208 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-09-03 19:23:06,209 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,213 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:06,213 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,235 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-09-03 19:23:06,236 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,236 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-09-03 19:23:06,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:06,280 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,286 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-09-03 19:23:06,287 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,290 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:06,290 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,311 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-09-03 19:23:06,312 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,312 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-09-03 19:23:06,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:06,355 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,363 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-09-03 19:23:06,364 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,368 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:06,368 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,395 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-09-03 19:23:06,395 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,396 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-09-03 19:23:06,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:06,451 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,459 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2019-09-03 19:23:06,460 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,463 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:06,463 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,500 INFO L567 ElimStorePlain]: treesize reduction 5, result has 88.4 percent of original size [2019-09-03 19:23:06,501 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,501 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:97, output treesize:27 [2019-09-03 19:23:06,543 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,544 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-09-03 19:23:06,545 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,558 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:23:06,559 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,559 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:24 [2019-09-03 19:23:06,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:06,613 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,620 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2019-09-03 19:23:06,621 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,627 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,631 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2019-09-03 19:23:06,632 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,669 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:23:06,672 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,673 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:91, output treesize:24 [2019-09-03 19:23:06,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:06,689 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,697 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2019-09-03 19:23:06,698 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,702 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,707 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2019-09-03 19:23:06,708 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,740 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:23:06,743 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,743 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:91, output treesize:24 [2019-09-03 19:23:06,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:06,751 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-09-03 19:23:06,751 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,761 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:23:06,761 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:06,761 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-09-03 19:23:07,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:07,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:07,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:07,452 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:07,453 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:07,457 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:07,457 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:07,467 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:07,469 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-03 19:23:07,487 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:23:07,488 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 58 [2019-09-03 19:23:07,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:07,493 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:07,499 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-03 19:23:07,499 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-03 19:23:07,540 INFO L567 ElimStorePlain]: treesize reduction 10, result has 76.7 percent of original size [2019-09-03 19:23:07,541 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:23:07,541 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:363, output treesize:29 [2019-09-03 19:23:07,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:23:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 19 proven. 191 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-09-03 19:23:08,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:23:08,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 27] total 38 [2019-09-03 19:23:08,226 INFO L454 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-09-03 19:23:08,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-09-03 19:23:08,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1281, Unknown=0, NotChecked=0, Total=1406 [2019-09-03 19:23:08,227 INFO L87 Difference]: Start difference. First operand 221 states and 279 transitions. Second operand 38 states. [2019-09-03 19:23:10,100 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2019-09-03 19:23:10,646 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-03 19:23:11,304 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-03 19:23:11,868 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-03 19:23:12,343 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-03 19:23:12,995 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-03 19:23:14,916 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2019-09-03 19:23:15,190 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 58 [2019-09-03 19:23:15,384 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 52 [2019-09-03 19:23:15,615 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 52 [2019-09-03 19:23:15,828 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2019-09-03 19:23:16,553 WARN L188 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-03 19:23:16,903 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 55 [2019-09-03 19:23:17,374 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-03 19:23:17,828 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2019-09-03 19:23:18,206 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-03 19:23:18,436 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2019-09-03 19:23:18,828 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 62 [2019-09-03 19:23:19,222 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2019-09-03 19:23:19,471 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 58 [2019-09-03 19:23:22,134 WARN L188 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-03 19:23:22,586 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-03 19:23:22,899 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-03 19:23:23,451 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-09-03 19:23:24,327 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-03 19:23:25,178 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-09-03 19:23:25,598 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-03 19:23:27,108 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-03 19:23:28,006 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-03 19:23:28,386 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-03 19:23:28,688 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-03 19:23:29,626 WARN L188 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-03 19:23:30,125 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-03 19:23:30,520 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-03 19:23:30,958 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-03 19:23:31,475 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-03 19:23:34,451 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2019-09-03 19:23:34,646 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 38 [2019-09-03 19:23:34,882 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 55 [2019-09-03 19:23:35,066 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 48 [2019-09-03 19:23:35,305 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2019-09-03 19:23:36,177 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-03 19:23:36,656 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-03 19:23:36,834 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2019-09-03 19:23:37,215 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-03 19:23:37,722 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 54 [2019-09-03 19:23:38,275 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-03 19:23:38,505 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2019-09-03 19:23:39,037 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-03 19:23:39,430 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 59 [2019-09-03 19:23:39,851 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-09-03 19:23:41,256 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-03 19:23:42,088 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-03 19:23:42,677 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-03 19:23:43,228 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-03 19:23:43,821 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-03 19:23:45,124 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-03 19:23:46,192 WARN L188 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-03 19:23:48,934 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-09-03 19:23:50,185 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-03 19:23:50,646 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-03 19:23:51,709 WARN L188 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-03 19:23:52,803 WARN L188 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-09-03 19:23:53,360 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-03 19:23:54,209 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-03 19:24:10,425 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-03 19:24:10,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:24:10,972 INFO L93 Difference]: Finished difference Result 1667 states and 2193 transitions. [2019-09-03 19:24:10,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2019-09-03 19:24:10,973 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 102 [2019-09-03 19:24:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:24:10,979 INFO L225 Difference]: With dead ends: 1667 [2019-09-03 19:24:10,979 INFO L226 Difference]: Without dead ends: 1628 [2019-09-03 19:24:10,988 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27364 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=5237, Invalid=64723, Unknown=0, NotChecked=0, Total=69960 [2019-09-03 19:24:10,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2019-09-03 19:24:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 277. [2019-09-03 19:24:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-09-03 19:24:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 353 transitions. [2019-09-03 19:24:11,058 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 353 transitions. Word has length 102 [2019-09-03 19:24:11,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:24:11,059 INFO L475 AbstractCegarLoop]: Abstraction has 277 states and 353 transitions. [2019-09-03 19:24:11,059 INFO L476 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-09-03 19:24:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 353 transitions. [2019-09-03 19:24:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-03 19:24:11,060 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:24:11,060 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 8, 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] [2019-09-03 19:24:11,061 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:24:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:24:11,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1369482703, now seen corresponding path program 1 times [2019-09-03 19:24:11,061 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:24:11,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:24:11,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:24:11,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 19:24:11,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:24:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:24:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-09-03 19:24:11,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 19:24:11,626 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-03 19:24:11,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 19:24:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:24:11,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 71 conjunts are in the unsatisfiable core [2019-09-03 19:24:11,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 19:24:12,557 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:24:12,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:24:12,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:24:15,290 WARN L188 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-09-03 19:24:17,124 WARN L188 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-03 19:24:40,702 WARN L188 SmtUtils]: Spent 23.38 s on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2019-09-03 19:24:41,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:24:41,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:24:41,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 19:24:41,747 INFO L392 ElimStorePlain]: Different costs {10=[v_prenex_14, |#memory_int|], 18=[v_prenex_10]} [2019-09-03 19:24:41,797 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:24:41,798 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 106 [2019-09-03 19:24:41,799 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-03 19:24:41,867 INFO L567 ElimStorePlain]: treesize reduction 136, result has 40.6 percent of original size [2019-09-03 19:24:41,922 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-03 19:24:41,922 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 112 [2019-09-03 19:24:41,924 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-03 19:24:41,963 INFO L567 ElimStorePlain]: treesize reduction 52, result has 35.8 percent of original size [2019-09-03 19:24:41,964 INFO L464 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2019-09-03 19:24:41,969 INFO L496 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-03 19:24:41,970 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 18 variables, input treesize:241, output treesize:3 [2019-09-03 19:24:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 76 proven. 231 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-09-03 19:24:42,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 19:24:42,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30] total 50 [2019-09-03 19:24:42,129 INFO L454 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-09-03 19:24:42,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-09-03 19:24:42,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2303, Unknown=0, NotChecked=0, Total=2450 [2019-09-03 19:24:42,129 INFO L87 Difference]: Start difference. First operand 277 states and 353 transitions. Second operand 50 states. [2019-09-03 19:24:49,342 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-09-03 19:24:51,971 WARN L188 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-03 19:24:52,696 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-03 19:24:55,774 WARN L188 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-03 19:24:56,651 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-03 19:24:56,977 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-03 19:24:57,245 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-03 19:24:59,917 WARN L188 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:25:02,172 WARN L188 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:25:02,561 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:25:03,977 WARN L188 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:25:05,517 WARN L188 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:25:08,645 WARN L188 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:25:08,846 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:25:09,210 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-03 19:25:10,808 WARN L188 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:25:11,445 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:25:14,208 WARN L188 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:25:17,433 WARN L188 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:25:19,573 WARN L188 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:25:19,813 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:25:20,228 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:25:21,273 WARN L188 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:25:23,902 WARN L188 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-03 19:25:24,281 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:25:24,616 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:25:25,019 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:25:25,907 WARN L188 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:25:26,799 WARN L188 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-03 19:25:29,563 WARN L188 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-03 19:25:31,363 WARN L188 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-03 19:25:33,991 WARN L188 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-03 19:25:36,150 WARN L188 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-03 19:25:38,036 WARN L188 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-03 19:25:40,116 WARN L188 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-03 19:25:50,796 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2019-09-03 19:25:52,067 WARN L188 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:25:54,835 WARN L188 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:25:56,233 WARN L188 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:25:57,179 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:03,721 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:26:06,475 WARN L188 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:26:06,918 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:07,332 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:07,996 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:09,491 WARN L188 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:26:17,445 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:18,326 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:26:20,890 WARN L188 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:22,782 WARN L188 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:23,726 WARN L188 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:26:32,814 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:33,265 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:36,876 WARN L188 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:26:37,483 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:26:39,629 WARN L188 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:26:53,026 WARN L188 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:27:00,529 WARN L188 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-03 19:27:07,230 WARN L188 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-09-03 19:27:13,420 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:27:21,527 WARN L188 SmtUtils]: Spent 8.05 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2019-09-03 19:27:29,663 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:27:33,820 WARN L188 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:27:40,015 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:27:44,186 WARN L188 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-03 19:27:50,387 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-09-03 19:27:56,549 WARN L188 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:28:02,742 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:28:08,907 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:28:15,109 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:28:21,271 WARN L188 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:28:27,465 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:28:35,625 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:28:39,794 WARN L188 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-03 19:28:50,362 WARN L188 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:28:50,864 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:28:52,339 WARN L188 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-03 19:28:55,295 WARN L188 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:28:58,627 WARN L188 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-03 19:28:58,976 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-03 19:29:00,183 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-03 19:29:00,967 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:29:01,504 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:29:05,952 WARN L188 SmtUtils]: Spent 4.32 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:29:06,491 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-03 19:29:07,159 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:29:08,562 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-03 19:29:09,749 WARN L188 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-03 19:29:10,536 WARN L188 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:29:10,810 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:29:13,901 WARN L188 SmtUtils]: Spent 2.57 s on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-03 19:29:14,464 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:29:15,301 WARN L188 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:29:15,660 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:29:19,844 WARN L188 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-09-03 19:29:22,759 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-03 19:29:25,729 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:29:31,210 WARN L188 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:31,431 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:29:32,005 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:29:34,220 WARN L188 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:36,412 WARN L188 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:29:39,794 WARN L188 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:29:41,423 WARN L188 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:29:42,659 WARN L188 SmtUtils]: Spent 982.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:29:43,804 WARN L188 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:29:44,050 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:29:44,983 WARN L188 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:29:45,341 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:45,676 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:46,812 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-03 19:29:47,185 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:49,832 WARN L188 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:50,119 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:52,288 WARN L188 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:53,240 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:29:54,656 WARN L188 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:55,287 WARN L188 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:29:55,555 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:29:57,263 WARN L188 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:57,931 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:29:58,441 WARN L188 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:29:59,900 WARN L188 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:30:01,867 WARN L188 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:30:04,046 WARN L188 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:30:04,679 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:30:04,892 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:30:05,136 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:30:07,590 WARN L188 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:30:07,788 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:30:08,416 WARN L188 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:30:15,070 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-03 19:30:15,321 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:15,512 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:15,709 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:15,991 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:16,171 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:16,368 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:16,942 WARN L188 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:17,148 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:30:19,765 WARN L188 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-03 19:30:20,133 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:22,390 WARN L188 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:22,606 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:22,794 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:23,075 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:23,249 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:28,169 WARN L188 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-03 19:30:30,373 WARN L188 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:30:32,586 WARN L188 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:37,408 WARN L188 SmtUtils]: Spent 4.75 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:38,424 WARN L188 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:38,646 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:38,846 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:30:43,069 WARN L188 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-03 19:30:44,199 WARN L188 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:44,376 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:49,658 WARN L188 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:49,878 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:50,131 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:50,679 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-03 19:30:54,001 WARN L188 SmtUtils]: Spent 3.25 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:54,755 WARN L188 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:55,131 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:55,315 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:55,803 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-03 19:30:56,156 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:30:56,390 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:30:56,820 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-03 19:30:58,549 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-03 19:30:58,827 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:30:59,102 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:30:59,382 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:30:59,650 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:30:59,920 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:00,194 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:00,470 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:00,735 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-03 19:31:00,994 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-03 19:31:01,383 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-03 19:31:01,669 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:01,944 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:02,209 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:02,478 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:02,759 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:03,047 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:03,334 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:03,952 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-03 19:31:04,280 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-03 19:31:04,570 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-03 19:31:04,871 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:05,172 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:05,513 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:05,791 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:06,068 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-03 19:31:06,587 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-03 19:31:06,899 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-03 19:31:07,172 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:07,458 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:07,738 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:08,016 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:08,304 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:08,805 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-03 19:31:09,202 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-03 19:31:09,490 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:09,772 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:10,056 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:10,335 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:10,784 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-03 19:31:11,095 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-03 19:31:11,377 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:11,660 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-03 19:31:11,955 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:12,372 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-03 19:31:12,692 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-03 19:31:12,973 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:13,374 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2019-09-03 19:31:16,946 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2019-09-03 19:31:35,169 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-03 19:31:37,160 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-03 19:31:40,384 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2019-09-03 19:31:55,992 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-03 19:32:14,091 WARN L188 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-09-03 19:32:20,292 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:32:28,404 WARN L188 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2019-09-03 19:32:36,551 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:32:44,720 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:32:50,923 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:33:01,096 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-03 19:33:07,315 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-09-03 19:33:15,492 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:33:21,697 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:33:29,859 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:33:36,065 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:33:44,228 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:33:50,428 WARN L188 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-03 19:33:58,588 WARN L188 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-03 19:34:06,744 WARN L188 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2019-09-03 19:34:20,650 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-03 19:34:36,161 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2019-09-03 19:34:36,532 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-03 19:34:39,318 WARN L188 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-03 19:34:42,392 WARN L188 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-03 19:34:43,041 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-03 19:34:51,065 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:34:51,762 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-03 19:34:54,145 WARN L188 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:34:56,508 WARN L188 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:34:57,302 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-03 19:34:59,213 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-03 19:35:00,603 WARN L188 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:35:01,120 WARN L188 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:35:03,935 WARN L188 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-03 19:35:04,524 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:35:06,909 WARN L188 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:35:07,654 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-03 19:35:20,946 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2019-09-03 19:35:21,230 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-09-03 19:35:22,587 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-03 19:35:27,547 WARN L188 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-03 19:35:30,952 WARN L188 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:31,316 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:35:34,802 WARN L188 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:35:37,573 WARN L188 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-03 19:35:38,698 WARN L188 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:35:39,353 WARN L188 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:41,195 WARN L188 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:35:41,435 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:41,800 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:43,472 WARN L188 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:35:43,669 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:44,055 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:44,258 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:45,539 WARN L188 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:45,741 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:35:46,742 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-03 19:35:47,297 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:35:47,748 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:49,411 WARN L188 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-03 19:35:49,927 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:51,138 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-03 19:35:51,329 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:35:51,532 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:52,882 WARN L188 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2019-09-03 19:35:53,160 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:35:54,119 WARN L188 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-03 19:35:59,791 WARN L188 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2019-09-03 19:36:00,747 WARN L188 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:36:02,318 WARN L188 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:36:02,516 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:36:02,827 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:36:03,005 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:36:03,885 WARN L188 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:36:04,104 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:36:06,375 WARN L188 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-03 19:36:09,879 WARN L188 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2019-09-03 19:36:10,082 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:36:10,371 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:36:10,587 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:36:12,769 WARN L188 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:36:15,517 WARN L188 SmtUtils]: Spent 2.67 s on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-03 19:36:15,727 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:36:18,685 WARN L188 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:36:22,580 WARN L188 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-03 19:36:23,510 WARN L188 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:36:23,725 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-03 19:36:23,907 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:36:24,159 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:36:24,349 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-03 19:36:27,350 WARN L188 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 49 DAG size of output: 49