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/array-crafted/zero_sum_const_m2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 12:21:13,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 12:21:13,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 12:21:13,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 12:21:13,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 12:21:13,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 12:21:13,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 12:21:13,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 12:21:13,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 12:21:13,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 12:21:13,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 12:21:13,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 12:21:13,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 12:21:13,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 12:21:13,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 12:21:13,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 12:21:13,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 12:21:13,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 12:21:13,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 12:21:13,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 12:21:13,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 12:21:13,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 12:21:13,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 12:21:13,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 12:21:13,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 12:21:13,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 12:21:13,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 12:21:13,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 12:21:13,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 12:21:13,203 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 12:21:13,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 12:21:13,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 12:21:13,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 12:21:13,205 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 12:21:13,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 12:21:13,206 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 12:21:13,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 12:21:13,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 12:21:13,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 12:21:13,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 12:21:13,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 12:21:13,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 12:21:13,207 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 12:21:13,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 12:21:13,207 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 12:21:13,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 12:21:13,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 12:21:13,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 12:21:13,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 12:21:13,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 12:21:13,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 12:21:13,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 12:21:13,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 12:21:13,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 12:21:13,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 12:21:13,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 12:21:13,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 12:21:13,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 12:21:13,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 12:21:13,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 12:21:13,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 12:21:13,255 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 12:21:13,255 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 12:21:13,256 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c [2019-09-07 12:21:13,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5e34df5f/46c249f9af7045c0b93323a5b67fe6ad/FLAG74a63e60c [2019-09-07 12:21:13,712 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 12:21:13,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m2.c [2019-09-07 12:21:13,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5e34df5f/46c249f9af7045c0b93323a5b67fe6ad/FLAG74a63e60c [2019-09-07 12:21:14,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5e34df5f/46c249f9af7045c0b93323a5b67fe6ad [2019-09-07 12:21:14,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 12:21:14,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 12:21:14,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 12:21:14,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 12:21:14,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 12:21:14,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:21:14" (1/1) ... [2019-09-07 12:21:14,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fb4ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14, skipping insertion in model container [2019-09-07 12:21:14,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:21:14" (1/1) ... [2019-09-07 12:21:14,089 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 12:21:14,108 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 12:21:14,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:21:14,369 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 12:21:14,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:21:14,428 INFO L192 MainTranslator]: Completed translation [2019-09-07 12:21:14,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14 WrapperNode [2019-09-07 12:21:14,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 12:21:14,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 12:21:14,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 12:21:14,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 12:21:14,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14" (1/1) ... [2019-09-07 12:21:14,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14" (1/1) ... [2019-09-07 12:21:14,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14" (1/1) ... [2019-09-07 12:21:14,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14" (1/1) ... [2019-09-07 12:21:14,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14" (1/1) ... [2019-09-07 12:21:14,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14" (1/1) ... [2019-09-07 12:21:14,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14" (1/1) ... [2019-09-07 12:21:14,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 12:21:14,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 12:21:14,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 12:21:14,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 12:21:14,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 12:21:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 12:21:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 12:21:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-07 12:21:14,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 12:21:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 12:21:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-07 12:21:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-07 12:21:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-09-07 12:21:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-07 12:21:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 12:21:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-07 12:21:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-07 12:21:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-07 12:21:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 12:21:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 12:21:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-07 12:21:14,989 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 12:21:14,989 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-07 12:21:14,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:21:14 BoogieIcfgContainer [2019-09-07 12:21:14,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 12:21:14,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 12:21:14,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 12:21:14,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 12:21:14,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 12:21:14" (1/3) ... [2019-09-07 12:21:14,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecc0d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:21:14, skipping insertion in model container [2019-09-07 12:21:14,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:21:14" (2/3) ... [2019-09-07 12:21:14,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecc0d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:21:14, skipping insertion in model container [2019-09-07 12:21:14,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:21:14" (3/3) ... [2019-09-07 12:21:14,998 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m2.c [2019-09-07 12:21:15,006 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 12:21:15,012 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 12:21:15,028 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 12:21:15,055 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 12:21:15,055 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 12:21:15,055 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 12:21:15,055 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 12:21:15,056 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 12:21:15,056 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 12:21:15,056 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 12:21:15,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 12:21:15,056 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 12:21:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-07 12:21:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-07 12:21:15,079 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:15,080 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] [2019-09-07 12:21:15,082 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:15,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:15,088 INFO L82 PathProgramCache]: Analyzing trace with hash -720839896, now seen corresponding path program 1 times [2019-09-07 12:21:15,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:15,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:15,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:21:15,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:21:15,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:21:15,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-07 12:21:15,222 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-07 12:21:15,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-07 12:21:15,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-07 12:21:15,234 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-09-07 12:21:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:15,255 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2019-09-07 12:21:15,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-07 12:21:15,257 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-09-07 12:21:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:15,265 INFO L225 Difference]: With dead ends: 57 [2019-09-07 12:21:15,265 INFO L226 Difference]: Without dead ends: 26 [2019-09-07 12:21:15,269 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 [2019-09-07 12:21:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-07 12:21:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-07 12:21:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-07 12:21:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-09-07 12:21:15,307 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2019-09-07 12:21:15,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:15,308 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-09-07 12:21:15,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-07 12:21:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-09-07 12:21:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-07 12:21:15,309 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:15,309 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] [2019-09-07 12:21:15,310 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:15,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:15,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1191176598, now seen corresponding path program 1 times [2019-09-07 12:21:15,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:15,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:15,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:21:15,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:21:15,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:21:15,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 12:21:15,419 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 12:21:15,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 12:21:15,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 12:21:15,420 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-09-07 12:21:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:15,490 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-09-07 12:21:15,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 12:21:15,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-07 12:21:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:15,491 INFO L225 Difference]: With dead ends: 38 [2019-09-07 12:21:15,491 INFO L226 Difference]: Without dead ends: 33 [2019-09-07 12:21:15,492 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 12:21:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-07 12:21:15,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-09-07 12:21:15,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-07 12:21:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-09-07 12:21:15,501 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2019-09-07 12:21:15,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:15,501 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-09-07 12:21:15,501 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 12:21:15,502 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-09-07 12:21:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-07 12:21:15,503 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:15,503 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:21:15,503 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:15,504 INFO L82 PathProgramCache]: Analyzing trace with hash -988852588, now seen corresponding path program 1 times [2019-09-07 12:21:15,504 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:15,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:15,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:21:15,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-07 12:21:15,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:21:15,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:21:15,560 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:21:15,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:21:15,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:21:15,561 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 3 states. [2019-09-07 12:21:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:15,615 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2019-09-07 12:21:15,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:21:15,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-09-07 12:21:15,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:15,617 INFO L225 Difference]: With dead ends: 59 [2019-09-07 12:21:15,617 INFO L226 Difference]: Without dead ends: 35 [2019-09-07 12:21:15,618 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 [2019-09-07 12:21:15,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-07 12:21:15,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-09-07 12:21:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-07 12:21:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-09-07 12:21:15,625 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 22 [2019-09-07 12:21:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:15,626 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-09-07 12:21:15,626 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:21:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-09-07 12:21:15,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-07 12:21:15,627 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:15,627 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:21:15,627 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:15,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:15,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1991586542, now seen corresponding path program 1 times [2019-09-07 12:21:15,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:15,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:15,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:21:15,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-07 12:21:15,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:21:15,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 12:21:15,728 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 12:21:15,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 12:21:15,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 12:21:15,730 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 4 states. [2019-09-07 12:21:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:15,812 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2019-09-07 12:21:15,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 12:21:15,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-09-07 12:21:15,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:15,814 INFO L225 Difference]: With dead ends: 55 [2019-09-07 12:21:15,814 INFO L226 Difference]: Without dead ends: 36 [2019-09-07 12:21:15,815 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 12:21:15,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-07 12:21:15,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2019-09-07 12:21:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-07 12:21:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-09-07 12:21:15,822 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2019-09-07 12:21:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:15,822 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-09-07 12:21:15,823 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 12:21:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-09-07 12:21:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-07 12:21:15,824 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:15,824 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:21:15,824 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:15,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1169709580, now seen corresponding path program 1 times [2019-09-07 12:21:15,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:15,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:15,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:21:15,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 12:21:15,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:21:15,909 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) [2019-09-07 12:21:15,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:21:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:15,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 12:21:15,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:21:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 12:21:16,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:21:16,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-09-07 12:21:16,031 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 12:21:16,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 12:21:16,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-07 12:21:16,032 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2019-09-07 12:21:16,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:16,124 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-09-07 12:21:16,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 12:21:16,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-09-07 12:21:16,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:16,129 INFO L225 Difference]: With dead ends: 55 [2019-09-07 12:21:16,129 INFO L226 Difference]: Without dead ends: 34 [2019-09-07 12:21:16,130 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-07 12:21:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-07 12:21:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-09-07 12:21:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-07 12:21:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-09-07 12:21:16,138 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 30 [2019-09-07 12:21:16,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:16,139 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-09-07 12:21:16,139 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 12:21:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-09-07 12:21:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-07 12:21:16,140 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:16,141 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, 1, 1, 1] [2019-09-07 12:21:16,141 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:16,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1195670154, now seen corresponding path program 2 times [2019-09-07 12:21:16,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:16,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:16,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:16,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:21:16,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-07 12:21:16,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:21:16,267 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:21:16,284 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-07 12:21:16,310 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 12:21:16,311 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:21:16,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 12:21:16,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:21:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-07 12:21:16,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:21:16,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-09-07 12:21:16,347 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 12:21:16,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 12:21:16,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-09-07 12:21:16,347 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2019-09-07 12:21:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:16,460 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2019-09-07 12:21:16,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 12:21:16,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2019-09-07 12:21:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:16,462 INFO L225 Difference]: With dead ends: 63 [2019-09-07 12:21:16,462 INFO L226 Difference]: Without dead ends: 46 [2019-09-07 12:21:16,462 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2019-09-07 12:21:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-07 12:21:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2019-09-07 12:21:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-07 12:21:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-09-07 12:21:16,469 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2019-09-07 12:21:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:16,469 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-09-07 12:21:16,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 12:21:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-09-07 12:21:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-07 12:21:16,471 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:16,471 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:21:16,471 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash -187044094, now seen corresponding path program 3 times [2019-09-07 12:21:16,472 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:16,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:16,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:16,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:21:16,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:21:18,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:21:18,766 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:21:18,786 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-07 12:21:18,826 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-07 12:21:18,826 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:21:18,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 54 conjunts are in the unsatisfiable core [2019-09-07 12:21:18,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:21:18,989 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-09-07 12:21:18,989 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:21:19,003 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:21:19,004 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:21:19,004 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-09-07 12:21:21,113 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 12:21:21,127 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:21:21,128 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 36 [2019-09-07 12:21:21,129 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:21:21,165 INFO L567 ElimStorePlain]: treesize reduction 16, result has 70.9 percent of original size [2019-09-07 12:21:21,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:21,170 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:21:21,171 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:49, output treesize:36 [2019-09-07 12:21:21,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:21,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:21,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 12:21:21,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:21:21,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31] total 57 [2019-09-07 12:21:21,563 INFO L454 AbstractCegarLoop]: Interpolant automaton has 57 states [2019-09-07 12:21:21,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2019-09-07 12:21:21,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2976, Unknown=0, NotChecked=0, Total=3192 [2019-09-07 12:21:21,565 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 57 states. [2019-09-07 12:21:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:26,173 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2019-09-07 12:21:26,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-07 12:21:26,173 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 40 [2019-09-07 12:21:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:26,175 INFO L225 Difference]: With dead ends: 101 [2019-09-07 12:21:26,175 INFO L226 Difference]: Without dead ends: 95 [2019-09-07 12:21:26,182 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=523, Invalid=6449, Unknown=0, NotChecked=0, Total=6972 [2019-09-07 12:21:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-09-07 12:21:26,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 58. [2019-09-07 12:21:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-09-07 12:21:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2019-09-07 12:21:26,201 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 40 [2019-09-07 12:21:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:26,202 INFO L475 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2019-09-07 12:21:26,202 INFO L476 AbstractCegarLoop]: Interpolant automaton has 57 states. [2019-09-07 12:21:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2019-09-07 12:21:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-07 12:21:26,205 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:26,205 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:21:26,206 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:26,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1685956864, now seen corresponding path program 4 times [2019-09-07 12:21:26,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:26,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:26,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:26,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:21:26,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 12:21:26,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:21:26,300 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 12:21:26,314 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:21:26,337 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-07 12:21:26,337 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:21:26,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 12:21:26,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:21:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 12:21:26,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:21:26,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-09-07 12:21:26,384 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 12:21:26,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 12:21:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-09-07 12:21:26,385 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 13 states. [2019-09-07 12:21:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:26,626 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2019-09-07 12:21:26,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 12:21:26,627 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2019-09-07 12:21:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:26,630 INFO L225 Difference]: With dead ends: 125 [2019-09-07 12:21:26,630 INFO L226 Difference]: Without dead ends: 75 [2019-09-07 12:21:26,631 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-09-07 12:21:26,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-09-07 12:21:26,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2019-09-07 12:21:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-09-07 12:21:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2019-09-07 12:21:26,641 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 42 [2019-09-07 12:21:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:26,641 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2019-09-07 12:21:26,641 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 12:21:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2019-09-07 12:21:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-07 12:21:26,642 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:26,642 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:21:26,642 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:26,643 INFO L82 PathProgramCache]: Analyzing trace with hash 19991870, now seen corresponding path program 5 times [2019-09-07 12:21:26,643 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:26,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:26,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:26,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:21:26,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-07 12:21:26,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:21:26,712 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) [2019-09-07 12:21:26,731 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:21:26,784 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-09-07 12:21:26,784 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:21:26,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 12:21:26,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:21:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-07 12:21:26,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:21:26,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-09-07 12:21:26,849 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 12:21:26,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 12:21:26,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-09-07 12:21:26,849 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 13 states. [2019-09-07 12:21:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:27,055 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2019-09-07 12:21:27,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 12:21:27,055 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2019-09-07 12:21:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:27,057 INFO L225 Difference]: With dead ends: 72 [2019-09-07 12:21:27,057 INFO L226 Difference]: Without dead ends: 55 [2019-09-07 12:21:27,058 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2019-09-07 12:21:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-07 12:21:27,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2019-09-07 12:21:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-09-07 12:21:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-09-07 12:21:27,065 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 44 [2019-09-07 12:21:27,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:27,065 INFO L475 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2019-09-07 12:21:27,065 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 12:21:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2019-09-07 12:21:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-09-07 12:21:27,066 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:27,066 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:21:27,067 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:27,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1936263288, now seen corresponding path program 6 times [2019-09-07 12:21:27,067 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:27,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:27,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:27,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:21:27,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:28,017 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2019-09-07 12:21:28,237 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2019-09-07 12:21:28,388 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2019-09-07 12:21:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:21:31,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:21:31,016 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:21:31,036 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-07 12:21:31,064 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-09-07 12:21:31,064 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:21:31,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 69 conjunts are in the unsatisfiable core [2019-09-07 12:21:31,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:21:33,070 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:21:33,071 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:21:33,074 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:21:33,090 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:21:33,091 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 51 [2019-09-07 12:21:33,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:33,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:33,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:33,096 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 4 xjuncts. [2019-09-07 12:21:33,127 INFO L567 ElimStorePlain]: treesize reduction 46, result has 41.8 percent of original size [2019-09-07 12:21:33,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:33,130 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-07 12:21:33,130 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:31 [2019-09-07 12:21:33,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:33,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:33,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-07 12:21:33,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:21:33,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 34] total 67 [2019-09-07 12:21:33,461 INFO L454 AbstractCegarLoop]: Interpolant automaton has 67 states [2019-09-07 12:21:33,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2019-09-07 12:21:33,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=4058, Unknown=0, NotChecked=0, Total=4422 [2019-09-07 12:21:33,463 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 67 states. [2019-09-07 12:21:34,576 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 32 [2019-09-07 12:21:35,605 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 39 [2019-09-07 12:21:35,878 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 34 [2019-09-07 12:21:36,140 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 44 [2019-09-07 12:21:37,841 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 51 [2019-09-07 12:21:38,098 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 50 [2019-09-07 12:21:40,445 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 36 [2019-09-07 12:21:40,657 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 33 [2019-09-07 12:21:41,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:41,036 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2019-09-07 12:21:41,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-09-07 12:21:41,044 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 50 [2019-09-07 12:21:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:41,045 INFO L225 Difference]: With dead ends: 147 [2019-09-07 12:21:41,045 INFO L226 Difference]: Without dead ends: 80 [2019-09-07 12:21:41,050 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3556 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1112, Invalid=11770, Unknown=0, NotChecked=0, Total=12882 [2019-09-07 12:21:41,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-09-07 12:21:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2019-09-07 12:21:41,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-09-07 12:21:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2019-09-07 12:21:41,075 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 50 [2019-09-07 12:21:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:41,076 INFO L475 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2019-09-07 12:21:41,076 INFO L476 AbstractCegarLoop]: Interpolant automaton has 67 states. [2019-09-07 12:21:41,077 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2019-09-07 12:21:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-07 12:21:41,077 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:41,078 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:21:41,078 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:41,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:41,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1137298164, now seen corresponding path program 7 times [2019-09-07 12:21:41,079 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:41,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:41,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:41,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:21:41,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-07 12:21:41,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:21:41,177 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 12:21:41,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:21:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:41,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 12:21:41,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:21:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-07 12:21:41,319 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:21:41,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-09-07 12:21:41,320 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 12:21:41,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 12:21:41,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-09-07 12:21:41,321 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 16 states. [2019-09-07 12:21:41,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:21:41,606 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2019-09-07 12:21:41,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 12:21:41,607 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2019-09-07 12:21:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:21:41,608 INFO L225 Difference]: With dead ends: 107 [2019-09-07 12:21:41,608 INFO L226 Difference]: Without dead ends: 65 [2019-09-07 12:21:41,609 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2019-09-07 12:21:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-09-07 12:21:41,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2019-09-07 12:21:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-09-07 12:21:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2019-09-07 12:21:41,617 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 54 [2019-09-07 12:21:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:21:41,618 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2019-09-07 12:21:41,618 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 12:21:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2019-09-07 12:21:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-07 12:21:41,619 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:21:41,619 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:21:41,619 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:21:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:21:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1133377938, now seen corresponding path program 8 times [2019-09-07 12:21:41,620 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:21:41,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:21:41,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:41,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:21:41,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:21:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:21:43,282 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2019-09-07 12:21:43,436 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2019-09-07 12:21:43,576 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2019-09-07 12:21:44,256 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2019-09-07 12:21:44,446 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2019-09-07 12:21:44,618 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2019-09-07 12:21:44,994 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2019-09-07 12:21:45,476 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2019-09-07 12:21:45,677 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-09-07 12:21:45,890 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2019-09-07 12:21:46,101 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2019-09-07 12:21:46,299 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-07 12:21:46,491 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2019-09-07 12:21:46,668 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-07 12:21:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 8 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:21:48,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:21:48,279 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 12:21:48,299 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 [2019-09-07 12:21:48,330 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 12:21:48,330 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:21:48,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 85 conjunts are in the unsatisfiable core [2019-09-07 12:21:48,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:21:48,496 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-09-07 12:21:48,497 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:21:48,502 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:21:48,503 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:21:48,503 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-09-07 12:21:51,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:21:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:21:51,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:21:51,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 39] total 84 [2019-09-07 12:21:51,746 INFO L454 AbstractCegarLoop]: Interpolant automaton has 84 states [2019-09-07 12:21:51,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2019-09-07 12:21:51,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=6620, Unknown=0, NotChecked=0, Total=6972 [2019-09-07 12:21:51,749 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 84 states. [2019-09-07 12:21:53,326 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 39 [2019-09-07 12:21:54,335 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2019-09-07 12:21:54,636 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 44 [2019-09-07 12:21:54,896 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 44 [2019-09-07 12:21:55,163 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 46 [2019-09-07 12:21:55,425 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 41 [2019-09-07 12:21:57,110 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 51 [2019-09-07 12:21:57,398 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 51 [2019-09-07 12:21:57,676 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 45 [2019-09-07 12:21:57,952 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 42 [2019-09-07 12:21:59,670 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 59 [2019-09-07 12:22:00,868 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2019-09-07 12:22:01,798 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 36 [2019-09-07 12:22:02,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:02,124 INFO L93 Difference]: Finished difference Result 177 states and 193 transitions. [2019-09-07 12:22:02,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2019-09-07 12:22:02,124 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 60 [2019-09-07 12:22:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:02,126 INFO L225 Difference]: With dead ends: 177 [2019-09-07 12:22:02,126 INFO L226 Difference]: Without dead ends: 96 [2019-09-07 12:22:02,131 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4827 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=1007, Invalid=16549, Unknown=0, NotChecked=0, Total=17556 [2019-09-07 12:22:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-09-07 12:22:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2019-09-07 12:22:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-09-07 12:22:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2019-09-07 12:22:02,140 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 60 [2019-09-07 12:22:02,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:02,141 INFO L475 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2019-09-07 12:22:02,141 INFO L476 AbstractCegarLoop]: Interpolant automaton has 84 states. [2019-09-07 12:22:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2019-09-07 12:22:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-07 12:22:02,142 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:02,142 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:22:02,142 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:02,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1604861418, now seen corresponding path program 9 times [2019-09-07 12:22:02,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:02,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:02,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:02,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:22:02,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-09-07 12:22:02,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:22:02,260 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 12:22:02,273 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 [2019-09-07 12:22:02,315 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-09-07 12:22:02,315 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:22:02,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 12:22:02,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:22:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-09-07 12:22:02,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:22:02,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-09-07 12:22:02,460 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-07 12:22:02,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-07 12:22:02,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2019-09-07 12:22:02,461 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 24 states. [2019-09-07 12:22:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:03,062 INFO L93 Difference]: Finished difference Result 126 states and 138 transitions. [2019-09-07 12:22:03,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 12:22:03,063 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 64 [2019-09-07 12:22:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:03,064 INFO L225 Difference]: With dead ends: 126 [2019-09-07 12:22:03,064 INFO L226 Difference]: Without dead ends: 76 [2019-09-07 12:22:03,065 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2019-09-07 12:22:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-09-07 12:22:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2019-09-07 12:22:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-09-07 12:22:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2019-09-07 12:22:03,073 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 64 [2019-09-07 12:22:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:03,073 INFO L475 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2019-09-07 12:22:03,073 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-07 12:22:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2019-09-07 12:22:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-07 12:22:03,074 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:03,074 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:22:03,074 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:03,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1123464988, now seen corresponding path program 10 times [2019-09-07 12:22:03,075 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:03,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:03,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:03,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:22:03,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:04,472 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2019-09-07 12:22:04,623 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2019-09-07 12:22:04,779 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2019-09-07 12:22:04,960 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2019-09-07 12:22:05,114 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2019-09-07 12:22:05,273 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2019-09-07 12:22:05,495 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2019-09-07 12:22:05,909 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2019-09-07 12:22:06,061 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2019-09-07 12:22:06,211 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2019-09-07 12:22:06,372 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2019-09-07 12:22:06,538 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2019-09-07 12:22:06,714 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2019-09-07 12:22:06,893 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 48 [2019-09-07 12:22:07,077 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2019-09-07 12:22:07,257 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2019-09-07 12:22:07,743 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2019-09-07 12:22:08,098 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2019-09-07 12:22:08,306 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2019-09-07 12:22:08,516 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-09-07 12:22:08,717 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-07 12:22:08,903 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-09-07 12:22:09,086 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2019-09-07 12:22:09,275 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-07 12:22:10,287 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-07 12:22:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 24 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:22:11,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:22:11,143 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:22:11,154 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-07 12:22:11,184 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-07 12:22:11,185 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:22:11,187 WARN L254 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 99 conjunts are in the unsatisfiable core [2019-09-07 12:22:11,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:22:11,463 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-09-07 12:22:11,464 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:22:11,466 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:22:11,467 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:22:11,467 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-09-07 12:22:15,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:22:15,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:22:15,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 48] total 102 [2019-09-07 12:22:15,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 102 states [2019-09-07 12:22:15,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2019-09-07 12:22:15,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=9752, Unknown=0, NotChecked=0, Total=10302 [2019-09-07 12:22:15,742 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 102 states. [2019-09-07 12:22:17,696 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 41 [2019-09-07 12:22:19,816 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 60 [2019-09-07 12:22:20,091 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 54 [2019-09-07 12:22:20,487 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 41 [2019-09-07 12:22:20,922 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 35 [2019-09-07 12:22:22,960 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 11 [2019-09-07 12:22:23,838 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 11 [2019-09-07 12:22:24,317 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 59 [2019-09-07 12:22:24,666 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 46 [2019-09-07 12:22:24,937 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 62 [2019-09-07 12:22:25,213 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 45 [2019-09-07 12:22:25,488 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 27 [2019-09-07 12:22:26,294 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2019-09-07 12:22:28,453 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 51 [2019-09-07 12:22:29,051 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 25 [2019-09-07 12:22:29,339 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 23 [2019-09-07 12:22:29,613 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 19 [2019-09-07 12:22:29,799 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 14 [2019-09-07 12:22:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:33,495 INFO L93 Difference]: Finished difference Result 252 states and 273 transitions. [2019-09-07 12:22:33,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2019-09-07 12:22:33,495 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 70 [2019-09-07 12:22:33,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:33,497 INFO L225 Difference]: With dead ends: 252 [2019-09-07 12:22:33,497 INFO L226 Difference]: Without dead ends: 112 [2019-09-07 12:22:33,500 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10105 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=2230, Invalid=29990, Unknown=0, NotChecked=0, Total=32220 [2019-09-07 12:22:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-09-07 12:22:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 102. [2019-09-07 12:22:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-09-07 12:22:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2019-09-07 12:22:33,509 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 70 [2019-09-07 12:22:33,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:33,509 INFO L475 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2019-09-07 12:22:33,510 INFO L476 AbstractCegarLoop]: Interpolant automaton has 102 states. [2019-09-07 12:22:33,510 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2019-09-07 12:22:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-07 12:22:33,510 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:33,510 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:22:33,511 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:33,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:33,511 INFO L82 PathProgramCache]: Analyzing trace with hash 886486368, now seen corresponding path program 11 times [2019-09-07 12:22:33,511 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:33,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:33,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:33,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:22:33,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 12:22:33,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:22:33,642 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 [2019-09-07 12:22:33,657 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-07 12:22:33,785 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-09-07 12:22:33,786 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:22:33,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-07 12:22:33,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:22:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 12:22:33,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:22:33,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2019-09-07 12:22:33,880 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-07 12:22:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-07 12:22:33,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2019-09-07 12:22:33,881 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 22 states. [2019-09-07 12:22:34,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:34,399 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2019-09-07 12:22:34,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 12:22:34,399 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 74 [2019-09-07 12:22:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:34,400 INFO L225 Difference]: With dead ends: 143 [2019-09-07 12:22:34,401 INFO L226 Difference]: Without dead ends: 85 [2019-09-07 12:22:34,401 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2019-09-07 12:22:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-09-07 12:22:34,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2019-09-07 12:22:34,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-09-07 12:22:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2019-09-07 12:22:34,408 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 74 [2019-09-07 12:22:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:34,409 INFO L475 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2019-09-07 12:22:34,409 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-07 12:22:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2019-09-07 12:22:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-09-07 12:22:34,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:34,410 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:22:34,410 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:34,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:34,410 INFO L82 PathProgramCache]: Analyzing trace with hash -364171302, now seen corresponding path program 12 times [2019-09-07 12:22:34,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:34,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:34,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:34,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:22:34,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:35,530 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2019-09-07 12:22:35,658 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2019-09-07 12:22:35,909 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2019-09-07 12:22:36,054 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 39 [2019-09-07 12:22:36,227 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 41 [2019-09-07 12:22:36,409 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2019-09-07 12:22:36,585 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 42 [2019-09-07 12:22:36,774 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2019-09-07 12:22:36,960 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2019-09-07 12:22:37,177 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2019-09-07 12:22:37,432 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2019-09-07 12:22:37,691 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2019-09-07 12:22:37,951 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2019-09-07 12:22:38,105 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2019-09-07 12:22:38,418 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2019-09-07 12:22:38,599 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2019-09-07 12:22:38,791 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2019-09-07 12:22:38,991 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2019-09-07 12:22:39,193 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 51 [2019-09-07 12:22:39,403 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2019-09-07 12:22:39,621 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 53 [2019-09-07 12:22:39,842 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 55 [2019-09-07 12:22:40,059 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2019-09-07 12:22:40,288 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2019-09-07 12:22:40,503 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2019-09-07 12:22:41,039 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 51 [2019-09-07 12:22:41,246 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2019-09-07 12:22:41,487 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2019-09-07 12:22:41,735 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2019-09-07 12:22:41,956 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2019-09-07 12:22:42,187 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2019-09-07 12:22:42,420 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2019-09-07 12:22:42,670 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2019-09-07 12:22:42,916 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2019-09-07 12:22:43,164 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2019-09-07 12:22:43,392 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-09-07 12:22:44,522 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-09-07 12:22:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 42 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:22:45,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:22:45,858 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) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:22:45,868 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-07 12:22:45,920 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-09-07 12:22:45,920 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:22:45,922 WARN L254 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 125 conjunts are in the unsatisfiable core [2019-09-07 12:22:45,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:22:54,978 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 12:22:54,979 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 12:22:55,018 INFO L341 Elim1Store]: treesize reduction 3, result has 93.5 percent of original size [2019-09-07 12:22:55,019 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 51 [2019-09-07 12:22:55,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,025 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-07 12:22:55,066 INFO L567 ElimStorePlain]: treesize reduction 28, result has 60.6 percent of original size [2019-09-07 12:22:55,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,069 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-07 12:22:55,069 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:61, output treesize:24 [2019-09-07 12:22:55,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:55,678 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:22:55,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:22:55,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 64] total 127 [2019-09-07 12:22:55,682 INFO L454 AbstractCegarLoop]: Interpolant automaton has 127 states [2019-09-07 12:22:55,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2019-09-07 12:22:55,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1139, Invalid=14863, Unknown=0, NotChecked=0, Total=16002 [2019-09-07 12:22:55,683 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 127 states. [2019-09-07 12:22:58,177 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 35 [2019-09-07 12:22:59,140 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 42 [2019-09-07 12:22:59,420 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 43 [2019-09-07 12:23:00,017 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 47 [2019-09-07 12:23:00,765 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 64 [2019-09-07 12:23:01,199 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 63 [2019-09-07 12:23:01,484 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 49 [2019-09-07 12:23:01,892 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 69 [2019-09-07 12:23:02,426 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 37 [2019-09-07 12:23:03,013 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 62 [2019-09-07 12:23:04,885 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-07 12:23:05,223 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2019-09-07 12:23:05,554 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-07 12:23:05,898 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 62 [2019-09-07 12:23:06,433 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2019-09-07 12:23:06,724 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-07 12:23:07,084 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 64 [2019-09-07 12:23:07,284 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-07 12:23:07,652 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 64 [2019-09-07 12:23:07,948 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-07 12:23:08,298 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2019-09-07 12:23:08,499 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2019-09-07 12:23:08,905 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 73 [2019-09-07 12:23:09,177 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2019-09-07 12:23:09,530 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 63 [2019-09-07 12:23:09,799 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 58 [2019-09-07 12:23:10,215 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 51 [2019-09-07 12:23:10,792 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 50 [2019-09-07 12:23:12,064 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 64 [2019-09-07 12:23:12,434 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 35 [2019-09-07 12:23:12,757 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2019-09-07 12:23:13,152 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 53 [2019-09-07 12:23:14,601 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2019-09-07 12:23:15,345 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-07 12:23:15,947 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-07 12:23:16,536 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-07 12:23:17,525 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 67 [2019-09-07 12:23:17,779 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-07 12:23:18,264 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 69 [2019-09-07 12:23:18,811 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 68 [2019-09-07 12:23:19,065 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-09-07 12:23:19,528 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 69 [2019-09-07 12:23:19,765 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 46 [2019-09-07 12:23:20,130 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 47 [2019-09-07 12:23:20,674 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 43 [2019-09-07 12:23:22,059 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2019-09-07 12:23:22,561 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2019-09-07 12:23:25,232 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 13 [2019-09-07 12:23:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:23:25,936 INFO L93 Difference]: Finished difference Result 226 states and 242 transitions. [2019-09-07 12:23:25,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2019-09-07 12:23:25,937 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 80 [2019-09-07 12:23:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:23:25,938 INFO L225 Difference]: With dead ends: 226 [2019-09-07 12:23:25,938 INFO L226 Difference]: Without dead ends: 84 [2019-09-07 12:23:25,941 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18170 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=4441, Invalid=49614, Unknown=1, NotChecked=0, Total=54056 [2019-09-07 12:23:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-09-07 12:23:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2019-09-07 12:23:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-09-07 12:23:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2019-09-07 12:23:25,949 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 80 [2019-09-07 12:23:25,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:23:25,949 INFO L475 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2019-09-07 12:23:25,949 INFO L476 AbstractCegarLoop]: Interpolant automaton has 127 states. [2019-09-07 12:23:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2019-09-07 12:23:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-07 12:23:25,950 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:23:25,950 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:23:25,950 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:23:25,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:23:25,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1828195112, now seen corresponding path program 13 times [2019-09-07 12:23:25,951 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:23:25,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:23:25,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:25,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:23:25,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-09-07 12:23:26,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:23:26,119 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 [2019-09-07 12:23:26,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:23:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:26,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 12:23:26,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:23:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-09-07 12:23:26,308 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:23:26,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2019-09-07 12:23:26,309 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-07 12:23:26,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-07 12:23:26,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2019-09-07 12:23:26,310 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 25 states. [2019-09-07 12:23:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:23:27,008 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2019-09-07 12:23:27,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-07 12:23:27,012 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 82 [2019-09-07 12:23:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:23:27,013 INFO L225 Difference]: With dead ends: 142 [2019-09-07 12:23:27,014 INFO L226 Difference]: Without dead ends: 95 [2019-09-07 12:23:27,014 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=343, Invalid=1139, Unknown=0, NotChecked=0, Total=1482 [2019-09-07 12:23:27,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-09-07 12:23:27,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2019-09-07 12:23:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-09-07 12:23:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2019-09-07 12:23:27,022 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 82 [2019-09-07 12:23:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:23:27,023 INFO L475 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2019-09-07 12:23:27,023 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-07 12:23:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2019-09-07 12:23:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-09-07 12:23:27,024 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:23:27,024 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:23:27,024 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:23:27,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:23:27,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1465654096, now seen corresponding path program 14 times [2019-09-07 12:23:27,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:23:27,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:23:27,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:27,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:23:27,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:28,502 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2019-09-07 12:23:28,636 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2019-09-07 12:23:28,773 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2019-09-07 12:23:28,918 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2019-09-07 12:23:29,078 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2019-09-07 12:23:29,266 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 47 [2019-09-07 12:23:29,470 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2019-09-07 12:23:29,706 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2019-09-07 12:23:29,955 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 50 [2019-09-07 12:23:30,211 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2019-09-07 12:23:30,458 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 54 [2019-09-07 12:23:30,745 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 56 [2019-09-07 12:23:31,032 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 56 [2019-09-07 12:23:31,305 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2019-09-07 12:23:31,590 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2019-09-07 12:23:31,862 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2019-09-07 12:23:32,065 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2019-09-07 12:23:32,284 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-07 12:23:32,501 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2019-09-07 12:23:32,740 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2019-09-07 12:23:32,986 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2019-09-07 12:23:33,241 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2019-09-07 12:23:33,472 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2019-09-07 12:23:33,714 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2019-09-07 12:23:33,983 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2019-09-07 12:23:34,301 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 59 [2019-09-07 12:23:34,581 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2019-09-07 12:23:34,879 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2019-09-07 12:23:35,126 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2019-09-07 12:23:35,394 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2019-09-07 12:23:35,680 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2019-09-07 12:23:35,917 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2019-09-07 12:23:36,155 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2019-09-07 12:23:36,466 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 59 [2019-09-07 12:23:36,788 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2019-09-07 12:23:37,100 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2019-09-07 12:23:37,410 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2019-09-07 12:23:37,701 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2019-09-07 12:23:37,990 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2019-09-07 12:23:38,293 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2019-09-07 12:23:38,602 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2019-09-07 12:23:38,908 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2019-09-07 12:23:39,226 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2019-09-07 12:23:39,554 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-07 12:23:39,845 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-07 12:23:40,110 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-09-07 12:23:40,338 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-07 12:23:40,802 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2019-09-07 12:23:41,067 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-09-07 12:23:41,314 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-09-07 12:23:41,573 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-07 12:23:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 72 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:23:43,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:23:43,856 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) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:23:43,866 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-07 12:23:43,909 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 12:23:43,909 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:23:43,912 WARN L254 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 139 conjunts are in the unsatisfiable core [2019-09-07 12:23:43,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:23:44,455 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-09-07 12:23:44,455 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:23:44,460 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:23:44,460 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:23:44,460 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-09-07 12:23:53,592 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:23:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:23:53,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:23:53,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 66] total 139 [2019-09-07 12:23:53,893 INFO L454 AbstractCegarLoop]: Interpolant automaton has 139 states [2019-09-07 12:23:53,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2019-09-07 12:23:53,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=876, Invalid=18306, Unknown=0, NotChecked=0, Total=19182 [2019-09-07 12:23:53,894 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 139 states. [2019-09-07 12:23:56,442 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 38 [2019-09-07 12:23:57,948 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 48 [2019-09-07 12:23:58,337 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 50 [2019-09-07 12:23:58,760 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 55 [2019-09-07 12:23:59,177 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 52 [2019-09-07 12:23:59,609 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 53 [2019-09-07 12:24:00,015 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 52 [2019-09-07 12:24:00,346 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 58 [2019-09-07 12:24:00,658 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 55 [2019-09-07 12:24:00,949 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 57 [2019-09-07 12:24:01,281 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 69 [2019-09-07 12:24:01,643 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 66 [2019-09-07 12:24:02,179 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 63 [2019-09-07 12:24:02,756 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 61 [2019-09-07 12:24:02,984 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2019-09-07 12:24:04,107 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 44 [2019-09-07 12:24:04,348 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 59 [2019-09-07 12:24:05,006 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 9 [2019-09-07 12:24:05,425 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 58 [2019-09-07 12:24:05,961 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 36 [2019-09-07 12:24:06,370 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 61 [2019-09-07 12:24:06,784 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 41 [2019-09-07 12:24:07,233 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 62 [2019-09-07 12:24:07,587 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 40 [2019-09-07 12:24:08,020 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 62 [2019-09-07 12:24:08,399 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 40 [2019-09-07 12:24:08,835 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 64 [2019-09-07 12:24:09,175 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 41 [2019-09-07 12:24:09,591 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 68 [2019-09-07 12:24:09,954 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 41 [2019-09-07 12:24:10,322 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 61 [2019-09-07 12:24:10,623 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 41 [2019-09-07 12:24:10,981 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 61 [2019-09-07 12:24:11,331 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 41 [2019-09-07 12:24:11,642 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 63 [2019-09-07 12:24:11,928 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 40 [2019-09-07 12:24:12,279 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 77 [2019-09-07 12:24:12,589 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 40 [2019-09-07 12:24:12,918 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 60 [2019-09-07 12:24:13,253 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 49 [2019-09-07 12:24:15,422 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 66 [2019-09-07 12:24:15,901 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 65 [2019-09-07 12:24:16,403 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 64 [2019-09-07 12:24:16,871 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2019-09-07 12:24:17,369 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2019-09-07 12:24:17,818 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2019-09-07 12:24:18,194 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 69 [2019-09-07 12:24:18,561 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2019-09-07 12:24:18,925 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 68 [2019-09-07 12:24:19,738 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 41 [2019-09-07 12:24:20,077 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 42 [2019-09-07 12:24:20,471 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 39 [2019-09-07 12:24:20,737 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 41 [2019-09-07 12:24:21,814 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 19 [2019-09-07 12:24:22,174 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 11 [2019-09-07 12:24:26,762 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 36 [2019-09-07 12:24:27,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:24:27,777 INFO L93 Difference]: Finished difference Result 324 states and 345 transitions. [2019-09-07 12:24:27,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2019-09-07 12:24:27,777 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 90 [2019-09-07 12:24:27,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:24:27,779 INFO L225 Difference]: With dead ends: 324 [2019-09-07 12:24:27,779 INFO L226 Difference]: Without dead ends: 144 [2019-09-07 12:24:27,781 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16291 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=3945, Invalid=50577, Unknown=0, NotChecked=0, Total=54522 [2019-09-07 12:24:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-09-07 12:24:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2019-09-07 12:24:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-09-07 12:24:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2019-09-07 12:24:27,793 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 90 [2019-09-07 12:24:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:24:27,794 INFO L475 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2019-09-07 12:24:27,794 INFO L476 AbstractCegarLoop]: Interpolant automaton has 139 states. [2019-09-07 12:24:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2019-09-07 12:24:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-07 12:24:27,795 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:24:27,796 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:24:27,796 INFO L418 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:24:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:24:27,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1797443124, now seen corresponding path program 15 times [2019-09-07 12:24:27,796 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:24:27,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:24:27,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:24:27,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:24:27,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:24:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:24:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-09-07 12:24:27,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:24:27,975 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) [2019-09-07 12:24:27,993 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 [2019-09-07 12:24:28,056 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-09-07 12:24:28,056 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:24:28,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-07 12:24:28,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:24:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-09-07 12:24:28,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:24:28,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2019-09-07 12:24:28,344 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-07 12:24:28,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-07 12:24:28,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1032, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 12:24:28,345 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand 36 states. [2019-09-07 12:24:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:24:29,400 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2019-09-07 12:24:29,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-07 12:24:29,400 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 94 [2019-09-07 12:24:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:24:29,402 INFO L225 Difference]: With dead ends: 180 [2019-09-07 12:24:29,402 INFO L226 Difference]: Without dead ends: 106 [2019-09-07 12:24:29,403 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=514, Invalid=2792, Unknown=0, NotChecked=0, Total=3306 [2019-09-07 12:24:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-09-07 12:24:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2019-09-07 12:24:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-09-07 12:24:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2019-09-07 12:24:29,411 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 94 [2019-09-07 12:24:29,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:24:29,411 INFO L475 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2019-09-07 12:24:29,411 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-07 12:24:29,411 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2019-09-07 12:24:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-07 12:24:29,412 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:24:29,412 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:24:29,412 INFO L418 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:24:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:24:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1265134406, now seen corresponding path program 16 times [2019-09-07 12:24:29,413 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:24:29,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:24:29,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:24:29,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:24:29,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:24:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:24:30,498 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 25 [2019-09-07 12:24:31,098 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 35 [2019-09-07 12:24:31,276 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 39 [2019-09-07 12:24:31,527 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 43 [2019-09-07 12:24:31,757 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 45 [2019-09-07 12:24:32,113 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 44 [2019-09-07 12:24:32,406 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 48 [2019-09-07 12:24:32,671 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 51 [2019-09-07 12:24:32,898 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 50 [2019-09-07 12:24:33,144 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 51 [2019-09-07 12:24:33,394 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 45 [2019-09-07 12:24:33,690 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 49 [2019-09-07 12:24:33,997 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 53 [2019-09-07 12:24:34,324 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 55 [2019-09-07 12:24:34,669 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 58 [2019-09-07 12:24:35,025 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 59 [2019-09-07 12:24:35,390 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 61 [2019-09-07 12:24:35,743 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 60 [2019-09-07 12:24:36,115 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 62 [2019-09-07 12:24:36,503 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 59 [2019-09-07 12:24:36,900 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 62 [2019-09-07 12:24:37,292 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 59 [2019-09-07 12:24:37,690 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 65 [2019-09-07 12:24:38,091 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 62 [2019-09-07 12:24:38,525 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 62 [2019-09-07 12:24:38,906 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 64 [2019-09-07 12:24:39,230 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 60 [2019-09-07 12:24:39,531 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2019-09-07 12:24:39,876 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2019-09-07 12:24:40,223 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 58 [2019-09-07 12:24:40,543 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 62 [2019-09-07 12:24:40,886 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 64 [2019-09-07 12:24:41,239 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 63 [2019-09-07 12:24:41,587 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 63 [2019-09-07 12:24:41,971 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 65 [2019-09-07 12:24:42,369 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 64 [2019-09-07 12:24:42,723 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2019-09-07 12:24:43,091 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2019-09-07 12:24:43,456 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 66 [2019-09-07 12:24:43,815 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 65 [2019-09-07 12:24:44,185 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 63 [2019-09-07 12:24:44,562 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 63 [2019-09-07 12:24:44,901 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2019-09-07 12:24:45,186 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-07 12:24:45,475 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2019-09-07 12:24:45,777 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 60 [2019-09-07 12:24:46,086 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2019-09-07 12:24:46,401 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 65 [2019-09-07 12:24:46,728 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2019-09-07 12:24:47,094 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 64 [2019-09-07 12:24:47,494 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2019-09-07 12:24:47,831 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2019-09-07 12:24:48,159 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2019-09-07 12:24:48,490 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2019-09-07 12:24:48,820 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2019-09-07 12:24:49,166 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 63 [2019-09-07 12:24:49,537 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2019-09-07 12:24:49,845 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2019-09-07 12:24:50,154 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2019-09-07 12:24:50,446 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2019-09-07 12:24:50,692 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2019-09-07 12:24:50,934 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-09-07 12:24:51,212 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2019-09-07 12:24:51,489 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2019-09-07 12:24:51,734 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-07 12:24:51,973 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2019-09-07 12:24:52,222 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-09-07 12:24:52,459 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-07 12:24:52,705 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2019-09-07 12:24:52,963 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2019-09-07 12:24:53,441 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2019-09-07 12:24:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 120 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:24:54,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:24:54,786 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:24:54,796 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-07 12:24:54,839 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-07 12:24:54,839 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:24:54,845 WARN L254 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 153 conjunts are in the unsatisfiable core [2019-09-07 12:24:54,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:24:55,506 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-09-07 12:24:55,506 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:24:55,509 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:24:55,509 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:24:55,509 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-09-07 12:25:06,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:25:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:25:06,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:25:06,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 75] total 160 [2019-09-07 12:25:06,871 INFO L454 AbstractCegarLoop]: Interpolant automaton has 160 states [2019-09-07 12:25:06,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2019-09-07 12:25:06,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1213, Invalid=24227, Unknown=0, NotChecked=0, Total=25440 [2019-09-07 12:25:06,872 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 160 states. [2019-09-07 12:25:11,450 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 49 [2019-09-07 12:25:13,458 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 58 [2019-09-07 12:25:16,574 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2019-09-07 12:25:16,968 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 66 [2019-09-07 12:25:17,424 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 93 [2019-09-07 12:25:17,849 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 76 [2019-09-07 12:25:18,636 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 51 [2019-09-07 12:25:18,996 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2019-09-07 12:25:19,357 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 50 [2019-09-07 12:25:20,716 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 46 [2019-09-07 12:25:22,034 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2019-09-07 12:25:22,644 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 61 [2019-09-07 12:25:23,102 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2019-09-07 12:25:23,698 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 71 [2019-09-07 12:25:24,095 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 53 [2019-09-07 12:25:24,555 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 68 [2019-09-07 12:25:25,071 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 84 [2019-09-07 12:25:25,539 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2019-09-07 12:25:25,886 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 79 [2019-09-07 12:25:26,373 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2019-09-07 12:25:26,937 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2019-09-07 12:25:27,438 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2019-09-07 12:25:27,852 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 71 [2019-09-07 12:25:28,232 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 75 [2019-09-07 12:25:28,626 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 73 [2019-09-07 12:25:29,099 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 99 [2019-09-07 12:25:29,512 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 75 [2019-09-07 12:25:30,952 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 59 [2019-09-07 12:25:32,325 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 87 [2019-09-07 12:25:32,926 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 83 [2019-09-07 12:25:33,553 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 82 [2019-09-07 12:25:34,135 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 76 [2019-09-07 12:25:34,576 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 77 [2019-09-07 12:25:35,059 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 65 [2019-09-07 12:25:35,505 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 77 [2019-09-07 12:25:35,957 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 69 [2019-09-07 12:25:36,422 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 75 [2019-09-07 12:25:36,950 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 67 [2019-09-07 12:25:37,350 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 72 [2019-09-07 12:25:37,854 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2019-09-07 12:25:38,286 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 70 [2019-09-07 12:25:38,673 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 72 [2019-09-07 12:25:39,049 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 70 [2019-09-07 12:25:39,441 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 73 [2019-09-07 12:25:39,839 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 66 [2019-09-07 12:25:40,242 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 65 [2019-09-07 12:25:40,617 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 65 [2019-09-07 12:25:41,078 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 87 [2019-09-07 12:25:41,494 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 63 [2019-09-07 12:25:41,935 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 66 [2019-09-07 12:25:42,686 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 22 [2019-09-07 12:25:43,217 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 17 [2019-09-07 12:25:43,830 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 21 [2019-09-07 12:25:44,062 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 16 [2019-09-07 12:25:45,301 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 18 [2019-09-07 12:25:45,720 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 9 [2019-09-07 12:25:46,671 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2019-09-07 12:25:47,272 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 66 [2019-09-07 12:25:47,878 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 65 [2019-09-07 12:25:48,487 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 65 [2019-09-07 12:25:49,104 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 60 [2019-09-07 12:25:49,707 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 61 [2019-09-07 12:25:50,350 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 61 [2019-09-07 12:25:50,928 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 59 [2019-09-07 12:25:51,378 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 36 [2019-09-07 12:25:52,947 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 21 [2019-09-07 12:25:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:25:54,144 INFO L93 Difference]: Finished difference Result 360 states and 381 transitions. [2019-09-07 12:25:54,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2019-09-07 12:25:54,145 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 100 [2019-09-07 12:25:54,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:25:54,147 INFO L225 Difference]: With dead ends: 360 [2019-09-07 12:25:54,147 INFO L226 Difference]: Without dead ends: 160 [2019-09-07 12:25:54,150 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25090 ImplicationChecksByTransitivity, 66.3s TimeCoverageRelationStatistics Valid=5523, Invalid=70929, Unknown=0, NotChecked=0, Total=76452 [2019-09-07 12:25:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-09-07 12:25:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 144. [2019-09-07 12:25:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-09-07 12:25:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 151 transitions. [2019-09-07 12:25:54,165 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 151 transitions. Word has length 100 [2019-09-07 12:25:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:25:54,166 INFO L475 AbstractCegarLoop]: Abstraction has 144 states and 151 transitions. [2019-09-07 12:25:54,166 INFO L476 AbstractCegarLoop]: Interpolant automaton has 160 states. [2019-09-07 12:25:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 151 transitions. [2019-09-07 12:25:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-07 12:25:54,167 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:25:54,167 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:25:54,167 INFO L418 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:25:54,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:25:54,168 INFO L82 PathProgramCache]: Analyzing trace with hash 463861442, now seen corresponding path program 17 times [2019-09-07 12:25:54,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:25:54,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:25:54,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:25:54,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:25:54,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:25:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:25:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 49 proven. 96 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2019-09-07 12:25:54,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:25:54,381 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:25:54,394 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-07 12:25:54,604 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-09-07 12:25:54,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:25:54,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-07 12:25:54,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:25:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2019-09-07 12:25:54,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:25:54,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2019-09-07 12:25:54,950 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-07 12:25:54,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-07 12:25:54,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1282, Unknown=0, NotChecked=0, Total=1560 [2019-09-07 12:25:54,951 INFO L87 Difference]: Start difference. First operand 144 states and 151 transitions. Second operand 40 states. [2019-09-07 12:25:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:25:56,285 INFO L93 Difference]: Finished difference Result 198 states and 210 transitions. [2019-09-07 12:25:56,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-07 12:25:56,288 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 104 [2019-09-07 12:25:56,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:25:56,288 INFO L225 Difference]: With dead ends: 198 [2019-09-07 12:25:56,288 INFO L226 Difference]: Without dead ends: 116 [2019-09-07 12:25:56,289 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=3528, Unknown=0, NotChecked=0, Total=4160 [2019-09-07 12:25:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-09-07 12:25:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2019-09-07 12:25:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-09-07 12:25:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2019-09-07 12:25:56,301 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 104 [2019-09-07 12:25:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:25:56,301 INFO L475 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2019-09-07 12:25:56,301 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-07 12:25:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2019-09-07 12:25:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-09-07 12:25:56,302 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:25:56,302 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:25:56,302 INFO L418 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:25:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:25:56,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1470398396, now seen corresponding path program 18 times [2019-09-07 12:25:56,303 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:25:56,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:25:56,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:25:56,304 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:25:56,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:25:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:25:57,702 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2019-09-07 12:25:57,860 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2019-09-07 12:25:58,035 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 34 [2019-09-07 12:25:58,199 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 35 [2019-09-07 12:25:58,392 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2019-09-07 12:25:58,609 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 38 [2019-09-07 12:25:58,835 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2019-09-07 12:25:58,974 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2019-09-07 12:25:59,120 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2019-09-07 12:25:59,302 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2019-09-07 12:25:59,450 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 36 [2019-09-07 12:25:59,627 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 40 [2019-09-07 12:25:59,815 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 42 [2019-09-07 12:26:00,010 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2019-09-07 12:26:00,231 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 44 [2019-09-07 12:26:00,457 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2019-09-07 12:26:00,700 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2019-09-07 12:26:00,938 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 48 [2019-09-07 12:26:01,202 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 48 [2019-09-07 12:26:01,467 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2019-09-07 12:26:01,750 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2019-09-07 12:26:02,041 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2019-09-07 12:26:02,316 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2019-09-07 12:26:02,603 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2019-09-07 12:26:02,894 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2019-09-07 12:26:03,198 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2019-09-07 12:26:03,487 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 59 [2019-09-07 12:26:03,707 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2019-09-07 12:26:03,927 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-07 12:26:04,175 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2019-09-07 12:26:04,432 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2019-09-07 12:26:04,707 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2019-09-07 12:26:04,978 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2019-09-07 12:26:05,272 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2019-09-07 12:26:05,556 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2019-09-07 12:26:05,842 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2019-09-07 12:26:06,137 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2019-09-07 12:26:06,450 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 61 [2019-09-07 12:26:06,765 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2019-09-07 12:26:07,096 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2019-09-07 12:26:07,433 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2019-09-07 12:26:07,759 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 63 [2019-09-07 12:26:08,079 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2019-09-07 12:26:08,403 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2019-09-07 12:26:08,747 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 67 [2019-09-07 12:26:09,093 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2019-09-07 12:26:09,372 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 66 [2019-09-07 12:26:09,640 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2019-09-07 12:26:09,923 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2019-09-07 12:26:10,222 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2019-09-07 12:26:10,565 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2019-09-07 12:26:10,915 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2019-09-07 12:26:11,237 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2019-09-07 12:26:11,589 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2019-09-07 12:26:11,931 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2019-09-07 12:26:12,289 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2019-09-07 12:26:12,627 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2019-09-07 12:26:12,954 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2019-09-07 12:26:13,282 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2019-09-07 12:26:13,605 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2019-09-07 12:26:13,940 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2019-09-07 12:26:14,248 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2019-09-07 12:26:14,550 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2019-09-07 12:26:14,837 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-07 12:26:15,113 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-07 12:26:15,352 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-09-07 12:26:15,594 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-09-07 12:26:15,850 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2019-09-07 12:26:16,105 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2019-09-07 12:26:16,341 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2019-09-07 12:26:16,572 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-09-07 12:26:16,800 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-07 12:26:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 168 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:26:19,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:26:19,491 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:26:19,501 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-07 12:26:19,614 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2019-09-07 12:26:19,614 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:26:19,618 WARN L254 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 180 conjunts are in the unsatisfiable core [2019-09-07 12:26:19,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:26:20,198 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-09-07 12:26:20,199 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:26:20,206 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:26:20,206 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:26:20,207 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-09-07 12:26:39,697 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:26:39,701 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:26:39,705 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:26:39,707 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 12:26:39,708 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:26:39,729 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:26:39,730 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 69 [2019-09-07 12:26:39,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,735 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-09-07 12:26:39,777 INFO L567 ElimStorePlain]: treesize reduction 75, result has 31.2 percent of original size [2019-09-07 12:26:39,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:39,779 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-07 12:26:39,779 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:65, output treesize:18 [2019-09-07 12:26:40,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:40,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:40,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:26:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 5 proven. 396 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 12:26:40,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:26:40,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 88] total 179 [2019-09-07 12:26:40,785 INFO L454 AbstractCegarLoop]: Interpolant automaton has 179 states [2019-09-07 12:26:40,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2019-09-07 12:26:40,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1782, Invalid=30080, Unknown=0, NotChecked=0, Total=31862 [2019-09-07 12:26:40,787 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 179 states. [2019-09-07 12:26:47,631 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 41 [2019-09-07 12:26:55,089 WARN L188 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 91 [2019-09-07 12:26:55,615 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 79 [2019-09-07 12:26:55,844 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2019-09-07 12:26:56,409 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 97 [2019-09-07 12:26:57,137 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 90 [2019-09-07 12:26:57,933 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 85 [2019-09-07 12:26:58,498 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 86 [2019-09-07 12:26:59,189 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 99 [2019-09-07 12:26:59,732 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 53 [2019-09-07 12:27:00,705 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 41 [2019-09-07 12:27:01,115 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2019-09-07 12:27:02,029 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 28 [2019-09-07 12:27:02,544 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 64 [2019-09-07 12:27:03,877 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 56 [2019-09-07 12:27:05,525 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 45 [2019-09-07 12:27:06,794 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 58 [2019-09-07 12:27:07,746 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 80 [2019-09-07 12:27:08,460 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 64 [2019-09-07 12:27:09,537 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 50 [2019-09-07 12:27:10,513 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 100 [2019-09-07 12:27:11,079 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 66 [2019-09-07 12:27:11,958 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 49 [2019-09-07 12:27:12,928 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 100 [2019-09-07 12:27:13,367 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 65 [2019-09-07 12:27:14,200 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 49 [2019-09-07 12:27:14,880 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2019-09-07 12:27:15,303 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 66 [2019-09-07 12:27:16,105 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 50 [2019-09-07 12:27:16,935 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2019-09-07 12:27:17,354 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 74 [2019-09-07 12:27:18,004 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 113 [2019-09-07 12:27:18,353 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 65 [2019-09-07 12:27:18,615 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2019-09-07 12:27:19,265 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2019-09-07 12:27:20,104 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 98 [2019-09-07 12:27:21,027 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 104 [2019-09-07 12:27:21,763 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 102 [2019-09-07 12:27:22,509 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 85 [2019-09-07 12:27:26,183 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2019-09-07 12:27:27,907 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 92 [2019-09-07 12:27:28,678 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2019-09-07 12:27:29,726 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 94 [2019-09-07 12:27:30,233 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 54 [2019-09-07 12:27:31,244 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 48 [2019-09-07 12:27:32,020 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 90 [2019-09-07 12:27:32,522 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 52 [2019-09-07 12:27:33,489 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 46 [2019-09-07 12:27:34,179 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2019-09-07 12:27:34,660 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 50 [2019-09-07 12:27:35,613 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 42 [2019-09-07 12:27:36,516 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 116 [2019-09-07 12:27:37,028 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 59 [2019-09-07 12:27:37,782 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 104 [2019-09-07 12:27:38,201 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2019-09-07 12:27:38,822 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 105 [2019-09-07 12:27:39,288 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 58 [2019-09-07 12:27:40,117 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 88 [2019-09-07 12:27:40,547 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 52 [2019-09-07 12:27:40,807 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2019-09-07 12:27:41,389 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 86 [2019-09-07 12:27:41,828 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 52 [2019-09-07 12:27:42,469 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 88 [2019-09-07 12:27:43,333 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 93 [2019-09-07 12:27:43,855 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 22 [2019-09-07 12:27:44,873 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 26 [2019-09-07 12:27:49,052 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 16 [2019-09-07 12:27:49,909 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2019-09-07 12:27:50,522 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 23 [2019-09-07 12:27:51,775 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 16 [2019-09-07 12:27:52,629 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 62 [2019-09-07 12:27:53,269 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 24 [2019-09-07 12:27:54,409 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 16 [2019-09-07 12:27:55,153 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 59 [2019-09-07 12:27:55,782 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 24 [2019-09-07 12:27:57,013 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 49 [2019-09-07 12:27:57,691 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 56 [2019-09-07 12:27:58,432 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 55 [2019-09-07 12:27:59,448 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 42 [2019-09-07 12:28:00,168 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 68 [2019-09-07 12:28:00,717 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 46 [2019-09-07 12:28:01,299 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 63 [2019-09-07 12:28:01,789 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 40 [2019-09-07 12:28:02,596 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 64 [2019-09-07 12:28:03,119 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 43 [2019-09-07 12:28:04,195 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 37 [2019-09-07 12:28:05,271 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 38 [2019-09-07 12:28:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:28:07,789 INFO L93 Difference]: Finished difference Result 360 states and 381 transitions. [2019-09-07 12:28:07,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2019-09-07 12:28:07,792 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 110 [2019-09-07 12:28:07,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:28:07,793 INFO L225 Difference]: With dead ends: 360 [2019-09-07 12:28:07,794 INFO L226 Difference]: Without dead ends: 176 [2019-09-07 12:28:07,799 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 372 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48495 ImplicationChecksByTransitivity, 102.1s TimeCoverageRelationStatistics Valid=9786, Invalid=129716, Unknown=0, NotChecked=0, Total=139502 [2019-09-07 12:28:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-09-07 12:28:07,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 158. [2019-09-07 12:28:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-09-07 12:28:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 165 transitions. [2019-09-07 12:28:07,819 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 165 transitions. Word has length 110 [2019-09-07 12:28:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:28:07,820 INFO L475 AbstractCegarLoop]: Abstraction has 158 states and 165 transitions. [2019-09-07 12:28:07,820 INFO L476 AbstractCegarLoop]: Interpolant automaton has 179 states. [2019-09-07 12:28:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 165 transitions. [2019-09-07 12:28:07,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-07 12:28:07,821 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:28:07,821 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:28:07,821 INFO L418 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:28:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:28:07,821 INFO L82 PathProgramCache]: Analyzing trace with hash -6275016, now seen corresponding path program 19 times [2019-09-07 12:28:07,821 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:28:07,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:28:07,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:28:07,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:28:07,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:28:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:28:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2019-09-07 12:28:08,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:28:08,153 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:28:08,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:28:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:28:08,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-07 12:28:08,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:28:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2019-09-07 12:28:08,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:28:08,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 34 [2019-09-07 12:28:08,560 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-09-07 12:28:08,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-09-07 12:28:08,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2019-09-07 12:28:08,562 INFO L87 Difference]: Start difference. First operand 158 states and 165 transitions. Second operand 34 states. [2019-09-07 12:28:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:28:09,907 INFO L93 Difference]: Finished difference Result 215 states and 227 transitions. [2019-09-07 12:28:09,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 12:28:09,908 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 114 [2019-09-07 12:28:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:28:09,909 INFO L225 Difference]: With dead ends: 215 [2019-09-07 12:28:09,909 INFO L226 Difference]: Without dead ends: 125 [2019-09-07 12:28:09,909 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=634, Invalid=2228, Unknown=0, NotChecked=0, Total=2862 [2019-09-07 12:28:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-09-07 12:28:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2019-09-07 12:28:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-09-07 12:28:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2019-09-07 12:28:09,924 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 114 [2019-09-07 12:28:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:28:09,924 INFO L475 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2019-09-07 12:28:09,924 INFO L476 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-09-07 12:28:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2019-09-07 12:28:09,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-07 12:28:09,925 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:28:09,925 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:28:09,926 INFO L418 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:28:09,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:28:09,926 INFO L82 PathProgramCache]: Analyzing trace with hash -313739086, now seen corresponding path program 20 times [2019-09-07 12:28:09,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:28:09,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:28:09,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:28:09,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:28:09,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:28:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:28:11,046 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2019-09-07 12:28:11,175 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2019-09-07 12:28:11,346 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2019-09-07 12:28:11,520 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 42 [2019-09-07 12:28:11,661 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2019-09-07 12:28:11,861 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2019-09-07 12:28:12,062 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2019-09-07 12:28:12,331 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 44 [2019-09-07 12:28:12,597 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 51 [2019-09-07 12:28:12,938 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 53 [2019-09-07 12:28:13,266 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 48 [2019-09-07 12:28:13,584 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 52 [2019-09-07 12:28:13,869 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2019-09-07 12:28:14,149 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 53 [2019-09-07 12:28:14,431 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 48 [2019-09-07 12:28:14,732 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 53 [2019-09-07 12:28:15,052 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 54 [2019-09-07 12:28:15,435 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 61 [2019-09-07 12:28:15,849 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 64 [2019-09-07 12:28:16,295 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2019-09-07 12:28:16,726 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2019-09-07 12:28:17,151 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 65 [2019-09-07 12:28:17,586 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 65 [2019-09-07 12:28:18,011 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2019-09-07 12:28:18,450 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 68 [2019-09-07 12:28:18,899 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2019-09-07 12:28:19,394 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 66 [2019-09-07 12:28:19,841 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2019-09-07 12:28:20,280 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2019-09-07 12:28:20,706 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2019-09-07 12:28:21,148 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2019-09-07 12:28:21,598 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 67 [2019-09-07 12:28:22,079 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 66 [2019-09-07 12:28:22,491 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2019-09-07 12:28:22,847 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2019-09-07 12:28:23,183 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 58 [2019-09-07 12:28:23,549 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 64 [2019-09-07 12:28:23,922 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 60 [2019-09-07 12:28:24,363 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 67 [2019-09-07 12:28:24,808 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 69 [2019-09-07 12:28:25,329 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 69 [2019-09-07 12:28:25,822 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 71 [2019-09-07 12:28:26,316 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 73 [2019-09-07 12:28:26,824 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 73 [2019-09-07 12:28:27,342 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 74 [2019-09-07 12:28:27,885 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 76 [2019-09-07 12:28:28,451 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 75 [2019-09-07 12:28:29,023 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 74 [2019-09-07 12:28:29,594 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 74 [2019-09-07 12:28:30,162 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 76 [2019-09-07 12:28:30,750 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 74 [2019-09-07 12:28:31,349 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 76 [2019-09-07 12:28:31,989 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 77 [2019-09-07 12:28:32,623 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 80 [2019-09-07 12:28:33,170 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 81 [2019-09-07 12:28:33,614 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2019-09-07 12:28:34,021 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2019-09-07 12:28:34,491 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-07 12:28:34,980 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2019-09-07 12:28:35,459 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 78 [2019-09-07 12:28:35,918 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2019-09-07 12:28:36,398 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2019-09-07 12:28:36,862 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 72 [2019-09-07 12:28:37,314 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2019-09-07 12:28:37,779 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2019-09-07 12:28:38,222 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2019-09-07 12:28:38,672 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2019-09-07 12:28:39,156 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2019-09-07 12:28:39,610 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2019-09-07 12:28:40,051 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2019-09-07 12:28:40,477 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2019-09-07 12:28:40,886 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2019-09-07 12:28:41,290 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2019-09-07 12:28:41,714 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2019-09-07 12:28:42,150 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2019-09-07 12:28:42,486 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2019-09-07 12:28:43,022 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2019-09-07 12:28:43,350 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2019-09-07 12:28:43,642 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2019-09-07 12:28:43,926 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2019-09-07 12:28:44,236 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2019-09-07 12:28:44,548 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2019-09-07 12:28:44,862 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2019-09-07 12:28:45,191 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2019-09-07 12:28:45,490 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-07 12:28:45,771 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-09-07 12:28:46,409 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2019-09-07 12:28:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 224 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:28:48,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:28:48,837 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:28:48,847 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-07 12:28:48,925 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 12:28:48,926 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:28:48,929 WARN L254 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 193 conjunts are in the unsatisfiable core [2019-09-07 12:28:48,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:28:50,138 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-09-07 12:28:50,139 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:28:50,145 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:28:50,145 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:28:50,145 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-09-07 12:29:11,201 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:29:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:29:11,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:29:11,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 93] total 195 [2019-09-07 12:29:11,713 INFO L454 AbstractCegarLoop]: Interpolant automaton has 195 states [2019-09-07 12:29:11,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2019-09-07 12:29:11,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1634, Invalid=36196, Unknown=0, NotChecked=0, Total=37830 [2019-09-07 12:29:11,714 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand 195 states. [2019-09-07 12:29:18,275 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 50 [2019-09-07 12:29:20,507 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 57 [2019-09-07 12:29:21,141 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 62 [2019-09-07 12:29:21,816 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 65 [2019-09-07 12:29:22,452 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 65 [2019-09-07 12:29:23,127 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 65 [2019-09-07 12:29:23,796 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 67 [2019-09-07 12:29:24,489 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 68 [2019-09-07 12:29:25,134 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 71 [2019-09-07 12:29:25,793 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 71 [2019-09-07 12:29:26,417 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 68 [2019-09-07 12:29:27,100 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 69 [2019-09-07 12:29:27,765 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 72 [2019-09-07 12:29:28,432 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 71 [2019-09-07 12:29:29,105 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 73 [2019-09-07 12:29:29,480 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 73 [2019-09-07 12:29:29,927 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 91 [2019-09-07 12:29:30,348 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 80 [2019-09-07 12:29:31,307 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 82 [2019-09-07 12:29:32,060 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 79 [2019-09-07 12:29:32,303 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2019-09-07 12:29:33,189 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2019-09-07 12:29:33,802 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 56 [2019-09-07 12:29:34,757 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 9 [2019-09-07 12:29:35,278 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2019-09-07 12:29:35,930 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 16 [2019-09-07 12:29:36,421 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2019-09-07 12:29:37,099 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2019-09-07 12:29:37,718 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 11 [2019-09-07 12:29:38,295 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2019-09-07 12:29:38,981 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2019-09-07 12:29:39,592 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 11 [2019-09-07 12:29:40,141 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 91 [2019-09-07 12:29:40,828 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2019-09-07 12:29:41,465 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 11 [2019-09-07 12:29:42,018 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2019-09-07 12:29:42,710 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2019-09-07 12:29:43,364 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 16 [2019-09-07 12:29:43,905 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2019-09-07 12:29:44,605 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 90 [2019-09-07 12:29:45,243 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 11 [2019-09-07 12:29:45,808 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 92 [2019-09-07 12:29:46,497 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 86 [2019-09-07 12:29:47,114 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 16 [2019-09-07 12:29:47,705 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 88 [2019-09-07 12:29:48,220 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 80 [2019-09-07 12:29:48,802 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 11 [2019-09-07 12:29:49,240 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 110 [2019-09-07 12:29:49,732 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 79 [2019-09-07 12:29:50,037 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 28 [2019-09-07 12:29:50,929 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 53 [2019-09-07 12:29:51,693 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 61 [2019-09-07 12:29:53,487 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2019-09-07 12:29:54,430 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 82 [2019-09-07 12:29:55,188 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 82 [2019-09-07 12:29:55,914 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 88 [2019-09-07 12:29:56,693 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 92 [2019-09-07 12:29:57,411 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 92 [2019-09-07 12:29:58,199 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 90 [2019-09-07 12:29:58,940 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 82 [2019-09-07 12:29:59,799 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 91 [2019-09-07 12:30:00,536 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 80 [2019-09-07 12:30:01,275 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 80 [2019-09-07 12:30:02,006 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 79 [2019-09-07 12:30:02,761 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 79 [2019-09-07 12:30:03,511 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 78 [2019-09-07 12:30:04,302 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 81 [2019-09-07 12:30:04,792 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 83 [2019-09-07 12:30:06,200 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 54 [2019-09-07 12:30:06,919 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 55 [2019-09-07 12:30:07,404 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 51 [2019-09-07 12:30:07,755 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 53 [2019-09-07 12:30:09,279 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 19 [2019-09-07 12:30:09,772 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 11 [2019-09-07 12:30:10,866 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 76 [2019-09-07 12:30:11,505 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2019-09-07 12:30:12,143 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2019-09-07 12:30:12,799 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2019-09-07 12:30:13,478 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2019-09-07 12:30:14,126 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 61 [2019-09-07 12:30:16,620 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 57 [2019-09-07 12:30:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:30:20,907 INFO L93 Difference]: Finished difference Result 430 states and 451 transitions. [2019-09-07 12:30:20,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2019-09-07 12:30:20,908 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 120 [2019-09-07 12:30:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:30:20,910 INFO L225 Difference]: With dead ends: 430 [2019-09-07 12:30:20,910 INFO L226 Difference]: Without dead ends: 192 [2019-09-07 12:30:20,913 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30663 ImplicationChecksByTransitivity, 103.3s TimeCoverageRelationStatistics Valid=6524, Invalid=97482, Unknown=0, NotChecked=0, Total=104006 [2019-09-07 12:30:20,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2019-09-07 12:30:20,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 172. [2019-09-07 12:30:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-09-07 12:30:20,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 179 transitions. [2019-09-07 12:30:20,934 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 179 transitions. Word has length 120 [2019-09-07 12:30:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:30:20,934 INFO L475 AbstractCegarLoop]: Abstraction has 172 states and 179 transitions. [2019-09-07 12:30:20,934 INFO L476 AbstractCegarLoop]: Interpolant automaton has 195 states. [2019-09-07 12:30:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 179 transitions. [2019-09-07 12:30:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-07 12:30:20,935 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:30:20,936 INFO L399 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:30:20,936 INFO L418 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:30:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:30:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1730646482, now seen corresponding path program 21 times [2019-09-07 12:30:20,936 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:30:20,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:30:20,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:30:20,937 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:30:20,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:30:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:30:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 81 proven. 140 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2019-09-07 12:30:21,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:30:21,222 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 12:30:21,251 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:30:21,400 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-09-07 12:30:21,400 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:30:21,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-07 12:30:21,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:30:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2019-09-07 12:30:21,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:30:21,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 37 [2019-09-07 12:30:21,609 INFO L454 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-09-07 12:30:21,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-09-07 12:30:21,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2019-09-07 12:30:21,609 INFO L87 Difference]: Start difference. First operand 172 states and 179 transitions. Second operand 37 states. [2019-09-07 12:30:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:30:22,681 INFO L93 Difference]: Finished difference Result 233 states and 245 transitions. [2019-09-07 12:30:22,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 12:30:22,682 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 124 [2019-09-07 12:30:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:30:22,683 INFO L225 Difference]: With dead ends: 233 [2019-09-07 12:30:22,683 INFO L226 Difference]: Without dead ends: 135 [2019-09-07 12:30:22,684 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=751, Invalid=2671, Unknown=0, NotChecked=0, Total=3422 [2019-09-07 12:30:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-09-07 12:30:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2019-09-07 12:30:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-09-07 12:30:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2019-09-07 12:30:22,701 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 124 [2019-09-07 12:30:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:30:22,701 INFO L475 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2019-09-07 12:30:22,701 INFO L476 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-09-07 12:30:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2019-09-07 12:30:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-07 12:30:22,702 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:30:22,702 INFO L399 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:30:22,702 INFO L418 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:30:22,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:30:22,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1940223528, now seen corresponding path program 22 times [2019-09-07 12:30:22,703 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:30:22,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:30:22,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:30:22,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:30:22,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:30:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:30:34,686 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2019-09-07 12:30:35,030 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2019-09-07 12:30:35,395 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2019-09-07 12:30:35,748 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2019-09-07 12:30:36,453 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-09-07 12:30:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:30:47,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:30:47,694 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:30:47,706 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-07 12:30:47,766 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-07 12:30:47,766 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:30:47,770 WARN L254 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 207 conjunts are in the unsatisfiable core [2019-09-07 12:30:47,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:30:49,785 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-09-07 12:30:49,785 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:30:49,789 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:30:49,789 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:30:49,789 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-09-07 12:31:19,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:31:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:31:20,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:31:20,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 102] total 213 [2019-09-07 12:31:20,402 INFO L454 AbstractCegarLoop]: Interpolant automaton has 213 states [2019-09-07 12:31:20,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2019-09-07 12:31:20,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=44593, Unknown=0, NotChecked=0, Total=45156 [2019-09-07 12:31:20,404 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand 213 states. [2019-09-07 12:32:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:32:01,540 INFO L93 Difference]: Finished difference Result 211 states and 218 transitions. [2019-09-07 12:32:01,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2019-09-07 12:32:01,542 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 130 [2019-09-07 12:32:01,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:32:01,544 INFO L225 Difference]: With dead ends: 211 [2019-09-07 12:32:01,544 INFO L226 Difference]: Without dead ends: 206 [2019-09-07 12:32:01,546 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11060 ImplicationChecksByTransitivity, 71.1s TimeCoverageRelationStatistics Valid=738, Invalid=64032, Unknown=0, NotChecked=0, Total=64770 [2019-09-07 12:32:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2019-09-07 12:32:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 184. [2019-09-07 12:32:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2019-09-07 12:32:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 191 transitions. [2019-09-07 12:32:01,568 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 191 transitions. Word has length 130 [2019-09-07 12:32:01,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:32:01,568 INFO L475 AbstractCegarLoop]: Abstraction has 184 states and 191 transitions. [2019-09-07 12:32:01,568 INFO L476 AbstractCegarLoop]: Interpolant automaton has 213 states. [2019-09-07 12:32:01,568 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 191 transitions. [2019-09-07 12:32:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-09-07 12:32:01,569 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:32:01,569 INFO L399 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:32:01,569 INFO L418 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:32:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:32:01,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1585708710, now seen corresponding path program 23 times [2019-09-07 12:32:01,570 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:32:01,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:32:01,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:01,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:32:01,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:32:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2019-09-07 12:32:01,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:32:01,917 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:32:01,928 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-07 12:32:02,636 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-09-07 12:32:02,636 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:32:02,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-07 12:32:02,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:32:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (24)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 12:32:03,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:32:03,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 40 [2019-09-07 12:32:03,142 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-07 12:32:03,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-07 12:32:03,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2019-09-07 12:32:03,142 INFO L87 Difference]: Start difference. First operand 184 states and 191 transitions. Second operand 40 states. [2019-09-07 12:32:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:32:04,117 INFO L93 Difference]: Finished difference Result 377 states and 393 transitions. [2019-09-07 12:32:04,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-07 12:32:04,117 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 132 [2019-09-07 12:32:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:32:04,119 INFO L225 Difference]: With dead ends: 377 [2019-09-07 12:32:04,119 INFO L226 Difference]: Without dead ends: 201 [2019-09-07 12:32:04,120 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2019-09-07 12:32:04,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2019-09-07 12:32:04,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 187. [2019-09-07 12:32:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-09-07 12:32:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 193 transitions. [2019-09-07 12:32:04,147 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 193 transitions. Word has length 132 [2019-09-07 12:32:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:32:04,147 INFO L475 AbstractCegarLoop]: Abstraction has 187 states and 193 transitions. [2019-09-07 12:32:04,147 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-07 12:32:04,147 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 193 transitions. [2019-09-07 12:32:04,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-07 12:32:04,148 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:32:04,148 INFO L399 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:32:04,148 INFO L418 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:32:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:32:04,149 INFO L82 PathProgramCache]: Analyzing trace with hash -269512348, now seen corresponding path program 24 times [2019-09-07 12:32:04,149 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:32:04,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:32:04,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:04,149 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:32:04,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:32:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 100 proven. 165 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2019-09-07 12:32:04,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:32:04,482 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:32:04,494 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-07 12:32:04,720 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-09-07 12:32:04,721 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:32:04,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-07 12:32:04,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:32:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2019-09-07 12:32:04,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:32:04,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 40 [2019-09-07 12:32:04,953 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-07 12:32:04,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-07 12:32:04,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2019-09-07 12:32:04,954 INFO L87 Difference]: Start difference. First operand 187 states and 193 transitions. Second operand 40 states. [2019-09-07 12:32:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:32:06,108 INFO L93 Difference]: Finished difference Result 198 states and 204 transitions. [2019-09-07 12:32:06,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-09-07 12:32:06,108 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 134 [2019-09-07 12:32:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:32:06,109 INFO L225 Difference]: With dead ends: 198 [2019-09-07 12:32:06,109 INFO L226 Difference]: Without dead ends: 145 [2019-09-07 12:32:06,110 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=878, Invalid=3154, Unknown=0, NotChecked=0, Total=4032 [2019-09-07 12:32:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-09-07 12:32:06,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2019-09-07 12:32:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-09-07 12:32:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2019-09-07 12:32:06,131 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 134 [2019-09-07 12:32:06,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:32:06,131 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2019-09-07 12:32:06,132 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-07 12:32:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2019-09-07 12:32:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-07 12:32:06,133 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:32:06,133 INFO L399 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:32:06,133 INFO L418 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:32:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:32:06,133 INFO L82 PathProgramCache]: Analyzing trace with hash -570746850, now seen corresponding path program 25 times [2019-09-07 12:32:06,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:32:06,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:32:06,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:06,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:32:06,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:32:07,903 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 38 [2019-09-07 12:32:08,030 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 40 [2019-09-07 12:32:08,212 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 43 [2019-09-07 12:32:08,430 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 44 [2019-09-07 12:32:08,673 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 43 [2019-09-07 12:32:08,934 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 43 [2019-09-07 12:32:09,158 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 44 [2019-09-07 12:32:09,412 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 47 [2019-09-07 12:32:09,677 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2019-09-07 12:32:09,988 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 51 [2019-09-07 12:32:10,309 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 52 [2019-09-07 12:32:10,621 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 51 [2019-09-07 12:32:10,928 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 53 [2019-09-07 12:32:11,226 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 54 [2019-09-07 12:32:11,500 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 46 [2019-09-07 12:32:11,773 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 48 [2019-09-07 12:32:12,067 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 53 [2019-09-07 12:32:12,484 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 59 [2019-09-07 12:32:12,875 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 62 [2019-09-07 12:32:13,274 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 63 [2019-09-07 12:32:13,676 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 61 [2019-09-07 12:32:14,085 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 63 [2019-09-07 12:32:14,506 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 62 [2019-09-07 12:32:14,909 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 63 [2019-09-07 12:32:15,365 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 63 [2019-09-07 12:32:15,775 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 64 [2019-09-07 12:32:16,201 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 68 [2019-09-07 12:32:16,635 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 67 [2019-09-07 12:32:17,089 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 70 [2019-09-07 12:32:17,549 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2019-09-07 12:32:18,028 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2019-09-07 12:32:18,546 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 76 [2019-09-07 12:32:19,035 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 77 [2019-09-07 12:32:19,539 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 75 [2019-09-07 12:32:20,059 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 76 [2019-09-07 12:32:20,586 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 75 [2019-09-07 12:32:21,126 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 78 [2019-09-07 12:32:21,628 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 77 [2019-09-07 12:32:22,021 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2019-09-07 12:32:22,403 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2019-09-07 12:32:22,808 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 70 [2019-09-07 12:32:23,222 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2019-09-07 12:32:23,697 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 77 [2019-09-07 12:32:24,188 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 77 [2019-09-07 12:32:24,746 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 79 [2019-09-07 12:32:25,289 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 82 [2019-09-07 12:32:25,831 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 80 [2019-09-07 12:32:26,400 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 83 [2019-09-07 12:32:26,962 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 83 [2019-09-07 12:32:27,608 WARN L188 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 85 [2019-09-07 12:32:28,172 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 88 [2019-09-07 12:32:28,755 WARN L188 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 89 [2019-09-07 12:32:29,350 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 89 [2019-09-07 12:32:29,954 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 90 [2019-09-07 12:32:30,562 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 89 [2019-09-07 12:32:31,183 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 91 [2019-09-07 12:32:31,898 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 93 [2019-09-07 12:32:32,614 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 93 [2019-09-07 12:32:33,294 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 93 [2019-09-07 12:32:33,999 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 96 [2019-09-07 12:32:34,715 WARN L188 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 94 [2019-09-07 12:32:35,463 WARN L188 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 97 [2019-09-07 12:32:36,082 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 96 [2019-09-07 12:32:36,634 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 93 [2019-09-07 12:32:37,184 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2019-09-07 12:32:37,738 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 90 [2019-09-07 12:32:38,331 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 88 [2019-09-07 12:32:38,944 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 95 [2019-09-07 12:32:39,556 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 93 [2019-09-07 12:32:40,183 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 92 [2019-09-07 12:32:40,828 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 94 [2019-09-07 12:32:41,494 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 91 [2019-09-07 12:32:42,133 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 88 [2019-09-07 12:32:42,782 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 87 [2019-09-07 12:32:43,441 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 88 [2019-09-07 12:32:44,081 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 86 [2019-09-07 12:32:44,714 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2019-09-07 12:32:45,349 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2019-09-07 12:32:46,010 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2019-09-07 12:32:46,648 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2019-09-07 12:32:47,279 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2019-09-07 12:32:47,910 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2019-09-07 12:32:48,533 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2019-09-07 12:32:49,197 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2019-09-07 12:32:49,877 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2019-09-07 12:32:50,557 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 74 [2019-09-07 12:32:51,246 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2019-09-07 12:32:51,778 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-07 12:32:52,226 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2019-09-07 12:32:52,683 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2019-09-07 12:32:53,131 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2019-09-07 12:32:53,587 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2019-09-07 12:32:54,060 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2019-09-07 12:32:54,520 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2019-09-07 12:32:54,984 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2019-09-07 12:32:55,435 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2019-09-07 12:32:55,906 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2019-09-07 12:32:56,389 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2019-09-07 12:32:56,820 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2019-09-07 12:32:57,241 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-07 12:32:57,650 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2019-09-07 12:32:58,064 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2019-09-07 12:32:58,497 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-09-07 12:32:58,909 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2019-09-07 12:32:59,317 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-07 12:32:59,720 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-09-07 12:33:00,152 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2019-09-07 12:33:00,568 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2019-09-07 12:33:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 342 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:33:02,987 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:33:02,987 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:33:02,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:33:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:33:03,070 WARN L254 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 225 conjunts are in the unsatisfiable core [2019-09-07 12:33:03,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:33:04,952 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-09-07 12:33:04,953 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:33:04,957 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:33:04,957 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:33:04,957 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-09-07 12:33:35,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:33:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:33:36,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:33:36,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 111] total 232 [2019-09-07 12:33:36,578 INFO L454 AbstractCegarLoop]: Interpolant automaton has 232 states [2019-09-07 12:33:36,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2019-09-07 12:33:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3133, Invalid=50459, Unknown=0, NotChecked=0, Total=53592 [2019-09-07 12:33:36,580 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 232 states. [2019-09-07 12:33:44,594 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 49 [2019-09-07 12:33:47,176 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 58 [2019-09-07 12:33:47,923 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 58 [2019-09-07 12:33:48,842 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 57 [2019-09-07 12:33:49,517 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 57 [2019-09-07 12:33:50,148 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 65 [2019-09-07 12:33:50,761 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 64 [2019-09-07 12:33:51,402 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 67 [2019-09-07 12:33:51,992 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 69 [2019-09-07 12:33:52,582 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 70 [2019-09-07 12:33:53,179 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 75 [2019-09-07 12:33:53,791 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 77 [2019-09-07 12:33:54,387 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 78 [2019-09-07 12:33:55,021 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 77 [2019-09-07 12:33:55,593 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 79 [2019-09-07 12:33:56,267 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 81 [2019-09-07 12:33:56,815 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 73 [2019-09-07 12:33:57,382 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 75 [2019-09-07 12:33:57,924 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 87 [2019-09-07 12:33:58,471 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 86 [2019-09-07 12:33:59,007 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 96 [2019-09-07 12:33:59,577 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 94 [2019-09-07 12:34:00,380 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 63 [2019-09-07 12:34:00,911 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2019-09-07 12:34:01,368 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 62 [2019-09-07 12:34:01,671 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 61 [2019-09-07 12:34:02,206 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2019-09-07 12:34:02,813 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2019-09-07 12:34:03,697 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 62 [2019-09-07 12:34:04,011 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2019-09-07 12:34:04,545 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2019-09-07 12:34:05,386 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 7 [2019-09-07 12:34:06,455 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 77 [2019-09-07 12:34:07,347 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 8 [2019-09-07 12:34:08,085 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 80 [2019-09-07 12:34:08,896 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 104 [2019-09-07 12:34:09,795 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 8 [2019-09-07 12:34:10,457 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 106 [2019-09-07 12:34:11,266 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 103 [2019-09-07 12:34:12,176 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 8 [2019-09-07 12:34:12,827 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 107 [2019-09-07 12:34:13,629 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 104 [2019-09-07 12:34:14,486 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 59 [2019-09-07 12:34:15,145 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 105 [2019-09-07 12:34:15,970 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 106 [2019-09-07 12:34:16,706 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 52 [2019-09-07 12:34:17,320 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 106 [2019-09-07 12:34:18,141 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 60 [2019-09-07 12:34:18,743 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 85 [2019-09-07 12:34:19,354 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 52 [2019-09-07 12:34:19,920 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 108 [2019-09-07 12:34:20,612 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 60 [2019-09-07 12:34:21,232 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 114 [2019-09-07 12:34:21,807 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 51 [2019-09-07 12:34:22,413 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 114 [2019-09-07 12:34:23,068 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 60 [2019-09-07 12:34:23,662 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 116 [2019-09-07 12:34:24,263 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 52 [2019-09-07 12:34:24,830 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 116 [2019-09-07 12:34:25,531 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 59 [2019-09-07 12:34:26,136 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 118 [2019-09-07 12:34:26,651 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 52 [2019-09-07 12:34:27,212 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 118 [2019-09-07 12:34:27,812 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 60 [2019-09-07 12:34:28,358 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 119 [2019-09-07 12:34:28,839 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 52 [2019-09-07 12:34:29,476 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 137 [2019-09-07 12:34:30,046 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 60 [2019-09-07 12:34:30,631 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 112 [2019-09-07 12:34:31,067 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 52 [2019-09-07 12:34:32,006 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2019-09-07 12:34:32,836 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2019-09-07 12:34:33,240 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 27 [2019-09-07 12:34:35,343 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 89 [2019-09-07 12:34:36,274 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 113 [2019-09-07 12:34:37,010 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 111 [2019-09-07 12:34:37,844 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 110 [2019-09-07 12:34:38,557 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 112 [2019-09-07 12:34:39,317 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 86 [2019-09-07 12:34:39,988 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 111 [2019-09-07 12:34:40,717 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 88 [2019-09-07 12:34:41,421 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 88 [2019-09-07 12:34:42,114 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 90 [2019-09-07 12:34:42,880 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 50 [2019-09-07 12:34:43,393 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 92