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_m4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 12:22:00,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 12:22:00,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 12:22:00,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 12:22:00,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 12:22:00,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 12:22:00,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 12:22:00,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 12:22:00,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 12:22:00,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 12:22:00,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 12:22:00,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 12:22:00,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 12:22:00,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 12:22:00,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 12:22:00,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 12:22:00,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 12:22:00,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 12:22:00,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 12:22:00,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 12:22:00,266 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 12:22:00,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 12:22:00,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 12:22:00,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 12:22:00,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 12:22:00,282 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 12:22:00,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 12:22:00,282 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 12:22:00,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 12:22:00,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 12:22:00,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 12:22:00,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 12:22:00,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 12:22:00,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 12:22:00,283 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 12:22:00,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 12:22:00,284 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 12:22:00,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 12:22:00,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 12:22:00,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 12:22:00,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 12:22:00,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 12:22:00,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 12:22:00,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 12:22:00,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 12:22:00,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 12:22:00,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 12:22:00,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 12:22:00,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 12:22:00,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 12:22:00,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 12:22:00,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 12:22:00,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 12:22:00,331 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 12:22:00,331 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 12:22:00,332 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2019-09-07 12:22:00,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9aa0ae0/3614c89ae8d1430690e6d97be8beb922/FLAG2e5cba1ef [2019-09-07 12:22:00,857 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 12:22:00,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2019-09-07 12:22:00,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9aa0ae0/3614c89ae8d1430690e6d97be8beb922/FLAG2e5cba1ef [2019-09-07 12:22:01,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9aa0ae0/3614c89ae8d1430690e6d97be8beb922 [2019-09-07 12:22:01,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 12:22:01,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 12:22:01,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 12:22:01,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 12:22:01,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 12:22:01,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:22:01" (1/1) ... [2019-09-07 12:22:01,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772df1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01, skipping insertion in model container [2019-09-07 12:22:01,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:22:01" (1/1) ... [2019-09-07 12:22:01,277 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 12:22:01,296 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 12:22:01,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:22:01,491 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 12:22:01,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:22:01,615 INFO L192 MainTranslator]: Completed translation [2019-09-07 12:22:01,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01 WrapperNode [2019-09-07 12:22:01,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 12:22:01,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 12:22:01,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 12:22:01,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 12:22:01,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01" (1/1) ... [2019-09-07 12:22:01,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01" (1/1) ... [2019-09-07 12:22:01,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01" (1/1) ... [2019-09-07 12:22:01,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01" (1/1) ... [2019-09-07 12:22:01,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01" (1/1) ... [2019-09-07 12:22:01,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01" (1/1) ... [2019-09-07 12:22:01,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01" (1/1) ... [2019-09-07 12:22:01,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 12:22:01,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 12:22:01,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 12:22:01,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 12:22:01,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01" (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 12:22:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 12:22:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 12:22:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-07 12:22:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 12:22:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 12:22:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-07 12:22:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-07 12:22:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-09-07 12:22:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-07 12:22:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 12:22:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-07 12:22:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-07 12:22:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-07 12:22:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 12:22:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 12:22:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-07 12:22:02,020 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 12:22:02,021 INFO L283 CfgBuilder]: Removed 9 assume(true) statements. [2019-09-07 12:22:02,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:22:02 BoogieIcfgContainer [2019-09-07 12:22:02,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 12:22:02,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 12:22:02,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 12:22:02,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 12:22:02,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 12:22:01" (1/3) ... [2019-09-07 12:22:02,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68da9dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:22:02, skipping insertion in model container [2019-09-07 12:22:02,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:22:01" (2/3) ... [2019-09-07 12:22:02,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68da9dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:22:02, skipping insertion in model container [2019-09-07 12:22:02,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:22:02" (3/3) ... [2019-09-07 12:22:02,029 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m4.c [2019-09-07 12:22:02,040 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 12:22:02,050 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 12:22:02,086 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 12:22:02,129 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 12:22:02,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 12:22:02,129 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 12:22:02,130 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 12:22:02,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 12:22:02,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 12:22:02,130 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 12:22:02,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 12:22:02,130 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 12:22:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-09-07 12:22:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-07 12:22:02,152 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:02,153 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] [2019-09-07 12:22:02,154 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:02,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:02,160 INFO L82 PathProgramCache]: Analyzing trace with hash 299774862, now seen corresponding path program 1 times [2019-09-07 12:22:02,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:02,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:02,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:02,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:22:02,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:02,317 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 12:22:02,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:22:02,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-07 12:22:02,325 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-07 12:22:02,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-07 12:22:02,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-07 12:22:02,338 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-09-07 12:22:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:02,383 INFO L93 Difference]: Finished difference Result 81 states and 117 transitions. [2019-09-07 12:22:02,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-07 12:22:02,385 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2019-09-07 12:22:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:02,399 INFO L225 Difference]: With dead ends: 81 [2019-09-07 12:22:02,400 INFO L226 Difference]: Without dead ends: 38 [2019-09-07 12:22:02,406 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 12:22:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-07 12:22:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-09-07 12:22:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-07 12:22:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2019-09-07 12:22:02,477 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 28 [2019-09-07 12:22:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:02,479 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2019-09-07 12:22:02,479 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-07 12:22:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2019-09-07 12:22:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-07 12:22:02,483 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:02,484 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] [2019-09-07 12:22:02,485 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:02,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:02,487 INFO L82 PathProgramCache]: Analyzing trace with hash 268068598, now seen corresponding path program 1 times [2019-09-07 12:22:02,487 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:02,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:02,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:02,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:22:02,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:02,718 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 12:22:02,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:22:02,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 12:22:02,720 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 12:22:02,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 12:22:02,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 12:22:02,722 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 5 states. [2019-09-07 12:22:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:02,814 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2019-09-07 12:22:02,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 12:22:02,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-09-07 12:22:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:02,817 INFO L225 Difference]: With dead ends: 58 [2019-09-07 12:22:02,817 INFO L226 Difference]: Without dead ends: 53 [2019-09-07 12:22:02,820 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 12:22:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-09-07 12:22:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-09-07 12:22:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-09-07 12:22:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2019-09-07 12:22:02,841 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 28 [2019-09-07 12:22:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:02,842 INFO L475 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2019-09-07 12:22:02,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 12:22:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2019-09-07 12:22:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-07 12:22:02,845 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:02,845 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 12:22:02,846 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:02,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:02,847 INFO L82 PathProgramCache]: Analyzing trace with hash 962591476, now seen corresponding path program 1 times [2019-09-07 12:22:02,847 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:02,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:02,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:02,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:22:02,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:02,943 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 12:22:02,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:22:02,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:22:02,945 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:22:02,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:22:02,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:22:02,945 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand 3 states. [2019-09-07 12:22:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:03,065 INFO L93 Difference]: Finished difference Result 99 states and 129 transitions. [2019-09-07 12:22:03,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:22:03,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-09-07 12:22:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:03,070 INFO L225 Difference]: With dead ends: 99 [2019-09-07 12:22:03,070 INFO L226 Difference]: Without dead ends: 55 [2019-09-07 12:22:03,071 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 12:22:03,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-07 12:22:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2019-09-07 12:22:03,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-09-07 12:22:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2019-09-07 12:22:03,084 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 30 [2019-09-07 12:22:03,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:03,085 INFO L475 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2019-09-07 12:22:03,085 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:22:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2019-09-07 12:22:03,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-07 12:22:03,088 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:03,088 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:22:03,088 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:03,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:03,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1516091022, now seen corresponding path program 1 times [2019-09-07 12:22:03,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:03,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:03,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:03,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:22:03,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:03,189 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 12:22:03,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:22:03,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 12:22:03,191 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 12:22:03,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 12:22:03,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 12:22:03,192 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 4 states. [2019-09-07 12:22:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:03,339 INFO L93 Difference]: Finished difference Result 95 states and 123 transitions. [2019-09-07 12:22:03,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 12:22:03,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-09-07 12:22:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:03,341 INFO L225 Difference]: With dead ends: 95 [2019-09-07 12:22:03,341 INFO L226 Difference]: Without dead ends: 56 [2019-09-07 12:22:03,342 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 12:22:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-09-07 12:22:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2019-09-07 12:22:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-09-07 12:22:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2019-09-07 12:22:03,351 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 32 [2019-09-07 12:22:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:03,352 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2019-09-07 12:22:03,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 12:22:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-09-07 12:22:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-07 12:22:03,353 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:03,354 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:22:03,354 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:03,354 INFO L82 PathProgramCache]: Analyzing trace with hash 94574052, now seen corresponding path program 1 times [2019-09-07 12:22:03,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:03,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:03,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:03,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:22:03,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-07 12:22:03,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:22:03,459 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:22:03,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:22:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:03,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 12:22:03,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:22:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-07 12:22:03,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:22:03,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-09-07 12:22:03,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 12:22:03,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 12:22:03,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-07 12:22:03,583 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 6 states. [2019-09-07 12:22:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:03,723 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2019-09-07 12:22:03,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 12:22:03,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2019-09-07 12:22:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:03,725 INFO L225 Difference]: With dead ends: 87 [2019-09-07 12:22:03,725 INFO L226 Difference]: Without dead ends: 50 [2019-09-07 12:22:03,726 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 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 12:22:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-09-07 12:22:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2019-09-07 12:22:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-09-07 12:22:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2019-09-07 12:22:03,733 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 46 [2019-09-07 12:22:03,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:03,733 INFO L475 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2019-09-07 12:22:03,733 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 12:22:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2019-09-07 12:22:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-07 12:22:03,734 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:03,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:22:03,735 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:03,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:03,735 INFO L82 PathProgramCache]: Analyzing trace with hash 589604962, now seen corresponding path program 2 times [2019-09-07 12:22:03,736 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:03,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:03,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:03,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:22:03,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-07 12:22:03,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:22:03,809 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 12:22:03,825 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-07 12:22:03,864 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 12:22:03,865 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:22:03,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 12:22:03,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:22:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-07 12:22:03,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:22:03,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-09-07 12:22:03,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 12:22:03,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 12:22:03,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-09-07 12:22:03,912 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 7 states. [2019-09-07 12:22:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:22:04,082 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2019-09-07 12:22:04,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 12:22:04,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2019-09-07 12:22:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:22:04,084 INFO L225 Difference]: With dead ends: 107 [2019-09-07 12:22:04,084 INFO L226 Difference]: Without dead ends: 74 [2019-09-07 12:22:04,085 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 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 12:22:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-09-07 12:22:04,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2019-09-07 12:22:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-09-07 12:22:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2019-09-07 12:22:04,094 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 48 [2019-09-07 12:22:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:22:04,094 INFO L475 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2019-09-07 12:22:04,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 12:22:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2019-09-07 12:22:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-07 12:22:04,095 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:22:04,096 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:22:04,096 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:22:04,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:22:04,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1474058926, now seen corresponding path program 3 times [2019-09-07 12:22:04,097 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:22:04,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:22:04,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:04,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:22:04,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:22:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:22:05,296 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2019-09-07 12:22:05,832 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2019-09-07 12:22:07,107 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-09-07 12:22:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:22:09,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:22:09,979 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 12:22:09,996 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-07 12:22:10,041 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-07 12:22:10,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:22:10,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 89 conjunts are in the unsatisfiable core [2019-09-07 12:22:10,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:22:16,811 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:22:16,812 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 18 [2019-09-07 12:22:16,813 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-09-07 12:22:16,824 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:22:16,825 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:16,829 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 12:22:16,830 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:31 [2019-09-07 12:22:17,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:17,175 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:17,231 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:22:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:22:17,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:22:17,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 97 [2019-09-07 12:22:17,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 97 states [2019-09-07 12:22:17,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2019-09-07 12:22:17,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=8953, Unknown=0, NotChecked=0, Total=9312 [2019-09-07 12:22:17,443 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 97 states. [2019-09-07 12:23:19,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:23:19,970 INFO L93 Difference]: Finished difference Result 181 states and 205 transitions. [2019-09-07 12:23:19,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-09-07 12:23:19,971 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 64 [2019-09-07 12:23:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:23:19,973 INFO L225 Difference]: With dead ends: 181 [2019-09-07 12:23:19,973 INFO L226 Difference]: Without dead ends: 175 [2019-09-07 12:23:19,980 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5454 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=881, Invalid=18853, Unknown=6, NotChecked=0, Total=19740 [2019-09-07 12:23:19,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2019-09-07 12:23:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 106. [2019-09-07 12:23:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-09-07 12:23:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2019-09-07 12:23:19,995 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 64 [2019-09-07 12:23:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:23:19,996 INFO L475 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2019-09-07 12:23:19,996 INFO L476 AbstractCegarLoop]: Interpolant automaton has 97 states. [2019-09-07 12:23:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2019-09-07 12:23:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-07 12:23:19,997 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:23:19,998 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:23:19,998 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:23:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:23:19,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1815286352, now seen corresponding path program 4 times [2019-09-07 12:23:19,999 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:23:19,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:23:20,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:20,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:23:20,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-07 12:23:20,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:23:20,070 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:23:20,080 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-07 12:23:20,111 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-07 12:23:20,111 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:23:20,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 12:23:20,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:23:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-07 12:23:20,167 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:23:20,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-09-07 12:23:20,168 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 12:23:20,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 12:23:20,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-09-07 12:23:20,169 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand 13 states. [2019-09-07 12:23:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:23:20,688 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2019-09-07 12:23:20,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 12:23:20,689 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2019-09-07 12:23:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:23:20,697 INFO L225 Difference]: With dead ends: 237 [2019-09-07 12:23:20,697 INFO L226 Difference]: Without dead ends: 139 [2019-09-07 12:23:20,698 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-09-07 12:23:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-07 12:23:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 117. [2019-09-07 12:23:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-09-07 12:23:20,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2019-09-07 12:23:20,725 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 66 [2019-09-07 12:23:20,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:23:20,726 INFO L475 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2019-09-07 12:23:20,726 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 12:23:20,726 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2019-09-07 12:23:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-07 12:23:20,730 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:23:20,730 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:23:20,730 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:23:20,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:23:20,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1556829298, now seen corresponding path program 5 times [2019-09-07 12:23:20,731 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:23:20,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:23:20,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:20,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:23:20,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-09-07 12:23:20,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:23:20,828 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:23:20,843 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-07 12:23:20,918 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-09-07 12:23:20,918 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:23:20,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 12:23:20,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:23:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 12:23:20,988 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:23:20,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-09-07 12:23:20,988 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 12:23:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 12:23:20,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-09-07 12:23:20,989 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 13 states. [2019-09-07 12:23:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:23:21,366 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2019-09-07 12:23:21,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 12:23:21,367 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2019-09-07 12:23:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:23:21,368 INFO L225 Difference]: With dead ends: 132 [2019-09-07 12:23:21,368 INFO L226 Difference]: Without dead ends: 91 [2019-09-07 12:23:21,369 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 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 12:23:21,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-09-07 12:23:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2019-09-07 12:23:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-09-07 12:23:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2019-09-07 12:23:21,376 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 68 [2019-09-07 12:23:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:23:21,377 INFO L475 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2019-09-07 12:23:21,377 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 12:23:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2019-09-07 12:23:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-07 12:23:21,378 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:23:21,379 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:23:21,379 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:23:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:23:21,379 INFO L82 PathProgramCache]: Analyzing trace with hash 249886016, now seen corresponding path program 6 times [2019-09-07 12:23:21,379 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:23:21,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:23:21,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:21,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:23:21,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:23:26,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:23:26,416 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 12:23:26,434 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-07 12:23:26,478 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-09-07 12:23:26,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:23:26,481 WARN L254 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 120 conjunts are in the unsatisfiable core [2019-09-07 12:23:26,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:23:26,553 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 12:23:26,553 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:23:26,563 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:23:26,563 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:23:26,563 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-09-07 12:23:26,684 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:23:26,685 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2019-09-07 12:23:26,686 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:23:26,693 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:23:26,693 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:23:26,693 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-09-07 12:23:32,821 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:23:32,822 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 19 [2019-09-07 12:23:32,822 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:23:32,825 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:23:32,825 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:23:32,825 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:7 [2019-09-07 12:23:32,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:23:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:23:33,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:23:33,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 61] total 110 [2019-09-07 12:23:33,119 INFO L454 AbstractCegarLoop]: Interpolant automaton has 110 states [2019-09-07 12:23:33,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2019-09-07 12:23:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=11647, Unknown=0, NotChecked=0, Total=11990 [2019-09-07 12:23:33,124 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 110 states. [2019-09-07 12:23:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:23:43,713 INFO L93 Difference]: Finished difference Result 191 states and 212 transitions. [2019-09-07 12:23:43,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-09-07 12:23:43,714 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 82 [2019-09-07 12:23:43,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:23:43,718 INFO L225 Difference]: With dead ends: 191 [2019-09-07 12:23:43,718 INFO L226 Difference]: Without dead ends: 186 [2019-09-07 12:23:43,725 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 25 SyntacticMatches, 14 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6142 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=613, Invalid=21737, Unknown=0, NotChecked=0, Total=22350 [2019-09-07 12:23:43,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-09-07 12:23:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 136. [2019-09-07 12:23:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-09-07 12:23:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2019-09-07 12:23:43,744 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 82 [2019-09-07 12:23:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:23:43,744 INFO L475 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2019-09-07 12:23:43,744 INFO L476 AbstractCegarLoop]: Interpolant automaton has 110 states. [2019-09-07 12:23:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2019-09-07 12:23:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-07 12:23:43,746 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:23:43,746 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:23:43,747 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:23:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:23:43,747 INFO L82 PathProgramCache]: Analyzing trace with hash 668999358, now seen corresponding path program 7 times [2019-09-07 12:23:43,747 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:23:43,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:23:43,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:43,748 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:23:43,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-09-07 12:23:43,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:23:43,846 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 12:23:43,865 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 12:23:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:43,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 12:23:43,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:23:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 12:23:43,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:23:43,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-09-07 12:23:43,984 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 12:23:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 12:23:43,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-09-07 12:23:43,987 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand 16 states. [2019-09-07 12:23:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:23:44,529 INFO L93 Difference]: Finished difference Result 297 states and 333 transitions. [2019-09-07 12:23:44,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 12:23:44,529 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2019-09-07 12:23:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:23:44,531 INFO L225 Difference]: With dead ends: 297 [2019-09-07 12:23:44,531 INFO L226 Difference]: Without dead ends: 169 [2019-09-07 12:23:44,536 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2019-09-07 12:23:44,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-09-07 12:23:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 147. [2019-09-07 12:23:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-07 12:23:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2019-09-07 12:23:44,548 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 84 [2019-09-07 12:23:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:23:44,548 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2019-09-07 12:23:44,548 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 12:23:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2019-09-07 12:23:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-07 12:23:44,555 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:23:44,555 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:23:44,556 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:23:44,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:23:44,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1642878076, now seen corresponding path program 8 times [2019-09-07 12:23:44,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:23:44,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:23:44,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:44,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:23:44,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 12:23:44,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:23:44,669 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 12:23:44,691 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 12:23:44,736 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 12:23:44,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:23:44,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 12:23:44,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:23:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 12:23:44,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:23:44,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-09-07 12:23:44,851 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 12:23:44,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 12:23:44,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-09-07 12:23:44,853 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand 16 states. [2019-09-07 12:23:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:23:45,381 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2019-09-07 12:23:45,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 12:23:45,382 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2019-09-07 12:23:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:23:45,382 INFO L225 Difference]: With dead ends: 162 [2019-09-07 12:23:45,383 INFO L226 Difference]: Without dead ends: 109 [2019-09-07 12:23:45,383 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2019-09-07 12:23:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-09-07 12:23:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2019-09-07 12:23:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-09-07 12:23:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2019-09-07 12:23:45,390 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 86 [2019-09-07 12:23:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:23:45,391 INFO L475 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2019-09-07 12:23:45,391 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 12:23:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2019-09-07 12:23:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-07 12:23:45,392 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:23:45,392 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:23:45,393 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:23:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:23:45,393 INFO L82 PathProgramCache]: Analyzing trace with hash -791157330, now seen corresponding path program 9 times [2019-09-07 12:23:45,393 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:23:45,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:23:45,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:45,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:23:45,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:23:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:23:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:23:54,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:23:54,061 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:23:54,071 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-07 12:23:54,123 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-09-07 12:23:54,123 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:23:54,127 WARN L254 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 154 conjunts are in the unsatisfiable core [2019-09-07 12:23:54,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:23:54,196 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 12:23:54,197 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:23:54,204 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:23:54,205 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:23:54,205 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-09-07 12:24:16,719 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:24:16,722 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:24:16,723 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:24:16,725 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 12:24:16,727 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-07 12:24:16,750 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:24:16,751 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 12:24:16,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:24:16,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:24:16,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:24:16,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:24:16,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:24:16,756 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 12:24:16,823 INFO L567 ElimStorePlain]: treesize reduction 109, result has 24.8 percent of original size [2019-09-07 12:24:16,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:24:16,825 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 12:24:16,825 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:65, output treesize:20 [2019-09-07 12:24:17,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:24:17,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:24:17,342 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:24:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 7 proven. 128 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (10)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 12:24:17,886 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:24:17,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 74] total 142 [2019-09-07 12:24:17,887 INFO L454 AbstractCegarLoop]: Interpolant automaton has 142 states [2019-09-07 12:24:17,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2019-09-07 12:24:17,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=19612, Unknown=0, NotChecked=0, Total=20022 [2019-09-07 12:24:17,890 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 142 states. [2019-09-07 12:24:33,656 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-07 12:24:41,103 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2019-09-07 12:24:43,780 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2019-09-07 12:24:50,950 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2019-09-07 12:24:56,338 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2019-09-07 12:25:03,063 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2019-09-07 12:25:12,995 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2019-09-07 12:25:22,118 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2019-09-07 12:25:25,784 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2019-09-07 12:26:08,925 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2019-09-07 12:26:20,397 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-07 12:26:39,436 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2019-09-07 12:27:12,760 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-07 12:27:28,461 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2019-09-07 12:27:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:27:39,212 INFO L93 Difference]: Finished difference Result 179 states and 194 transitions. [2019-09-07 12:27:39,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2019-09-07 12:27:39,213 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 100 [2019-09-07 12:27:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:27:39,215 INFO L225 Difference]: With dead ends: 179 [2019-09-07 12:27:39,215 INFO L226 Difference]: Without dead ends: 174 [2019-09-07 12:27:39,218 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 28 SyntacticMatches, 16 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10200 ImplicationChecksByTransitivity, 84.4s TimeCoverageRelationStatistics Valid=959, Invalid=44194, Unknown=3, NotChecked=0, Total=45156 [2019-09-07 12:27:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-09-07 12:27:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2019-09-07 12:27:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-09-07 12:27:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2019-09-07 12:27:39,235 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 100 [2019-09-07 12:27:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:27:39,236 INFO L475 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2019-09-07 12:27:39,236 INFO L476 AbstractCegarLoop]: Interpolant automaton has 142 states. [2019-09-07 12:27:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2019-09-07 12:27:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-07 12:27:39,237 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:27:39,238 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:27:39,238 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:27:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:27:39,238 INFO L82 PathProgramCache]: Analyzing trace with hash 953723820, now seen corresponding path program 10 times [2019-09-07 12:27:39,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:27:39,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:27:39,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:27:39,239 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:27:39,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:27:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:27:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-09-07 12:27:39,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:27:39,383 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 12:27:39,398 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:27:39,457 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-07 12:27:39,457 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:27:39,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 12:27:39,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:27:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-09-07 12:27:39,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:27:39,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2019-09-07 12:27:39,585 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-07 12:27:39,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-07 12:27:39,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2019-09-07 12:27:39,585 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand 19 states. [2019-09-07 12:27:40,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:27:40,372 INFO L93 Difference]: Finished difference Result 357 states and 393 transitions. [2019-09-07 12:27:40,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 12:27:40,373 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2019-09-07 12:27:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:27:40,375 INFO L225 Difference]: With dead ends: 357 [2019-09-07 12:27:40,375 INFO L226 Difference]: Without dead ends: 199 [2019-09-07 12:27:40,376 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2019-09-07 12:27:40,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-09-07 12:27:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 177. [2019-09-07 12:27:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-09-07 12:27:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 191 transitions. [2019-09-07 12:27:40,392 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 191 transitions. Word has length 102 [2019-09-07 12:27:40,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:27:40,392 INFO L475 AbstractCegarLoop]: Abstraction has 177 states and 191 transitions. [2019-09-07 12:27:40,392 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-07 12:27:40,393 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 191 transitions. [2019-09-07 12:27:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-07 12:27:40,399 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:27:40,399 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:27:40,400 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:27:40,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:27:40,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1368302102, now seen corresponding path program 11 times [2019-09-07 12:27:40,400 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:27:40,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:27:40,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:27:40,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:27:40,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:27:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:27:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-09-07 12:27:40,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:27:40,559 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) [2019-09-07 12:27:40,581 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:27:40,857 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-09-07 12:27:40,857 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:27:40,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 12:27:40,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:27:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-09-07 12:27:40,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:27:40,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2019-09-07 12:27:40,943 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-07 12:27:40,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-07 12:27:40,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2019-09-07 12:27:40,944 INFO L87 Difference]: Start difference. First operand 177 states and 191 transitions. Second operand 19 states. [2019-09-07 12:27:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:27:41,661 INFO L93 Difference]: Finished difference Result 192 states and 206 transitions. [2019-09-07 12:27:41,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 12:27:41,662 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 104 [2019-09-07 12:27:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:27:41,663 INFO L225 Difference]: With dead ends: 192 [2019-09-07 12:27:41,663 INFO L226 Difference]: Without dead ends: 127 [2019-09-07 12:27:41,664 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2019-09-07 12:27:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-09-07 12:27:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2019-09-07 12:27:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-09-07 12:27:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2019-09-07 12:27:41,676 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 104 [2019-09-07 12:27:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:27:41,676 INFO L475 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2019-09-07 12:27:41,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-07 12:27:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2019-09-07 12:27:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-07 12:27:41,677 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:27:41,678 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:27:41,678 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:27:41,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:27:41,678 INFO L82 PathProgramCache]: Analyzing trace with hash 846550684, now seen corresponding path program 12 times [2019-09-07 12:27:41,678 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:27:41,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:27:41,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:27:41,679 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:27:41,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:27:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:27:42,970 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 42 [2019-09-07 12:27:43,115 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 42 [2019-09-07 12:27:43,291 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2019-09-07 12:27:43,437 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2019-09-07 12:27:43,640 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2019-09-07 12:27:43,805 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 36 [2019-09-07 12:27:43,968 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2019-09-07 12:27:44,149 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2019-09-07 12:27:44,344 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 46 [2019-09-07 12:27:44,549 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 46 [2019-09-07 12:27:44,745 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 45 [2019-09-07 12:27:44,949 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 45 [2019-09-07 12:27:45,155 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 46 [2019-09-07 12:27:45,356 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 46 [2019-09-07 12:27:45,597 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2019-09-07 12:27:45,764 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2019-09-07 12:27:45,927 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2019-09-07 12:27:46,116 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 47 [2019-09-07 12:27:46,320 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2019-09-07 12:27:46,517 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2019-09-07 12:27:46,739 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 51 [2019-09-07 12:27:47,069 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2019-09-07 12:27:47,350 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2019-09-07 12:27:47,622 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2019-09-07 12:27:47,953 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 56 [2019-09-07 12:27:48,269 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2019-09-07 12:27:48,483 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2019-09-07 12:27:48,696 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2019-09-07 12:27:48,933 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2019-09-07 12:27:49,181 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2019-09-07 12:27:49,481 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2019-09-07 12:27:49,781 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2019-09-07 12:27:50,099 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2019-09-07 12:27:50,401 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2019-09-07 12:27:50,774 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2019-09-07 12:27:51,144 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 58 [2019-09-07 12:27:51,510 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2019-09-07 12:27:51,767 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2019-09-07 12:27:52,013 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2019-09-07 12:27:52,303 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2019-09-07 12:27:52,601 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2019-09-07 12:27:52,949 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2019-09-07 12:27:53,276 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2019-09-07 12:27:53,650 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 60 [2019-09-07 12:27:54,070 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-07 12:27:54,514 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2019-09-07 12:27:54,940 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2019-09-07 12:27:55,333 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2019-09-07 12:27:55,614 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2019-09-07 12:27:55,876 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-09-07 12:27:56,189 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-07 12:27:56,490 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-07 12:27:56,807 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2019-09-07 12:27:57,134 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-07 12:27:57,454 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2019-09-07 12:27:57,811 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2019-09-07 12:27:58,193 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2019-09-07 12:27:58,587 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2019-09-07 12:27:58,983 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-09-07 12:27:59,647 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2019-09-07 12:27:59,955 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2019-09-07 12:28:00,288 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2019-09-07 12:28:00,625 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2019-09-07 12:28:00,973 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-07 12:28:01,332 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2019-09-07 12:28:01,681 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2019-09-07 12:28:01,994 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2019-09-07 12:28:02,253 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-07 12:28:02,788 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2019-09-07 12:28:03,070 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-07 12:28:03,385 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2019-09-07 12:28:03,702 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2019-09-07 12:28:03,992 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2019-09-07 12:28:04,279 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-07 12:28:05,067 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-07 12:28:05,815 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-07 12:28:06,359 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-09-07 12:28:06,653 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-07 12:28:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 48 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:28:08,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:28:08,419 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 12:28:08,429 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-07 12:28:08,508 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-09-07 12:28:08,509 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:28:08,512 WARN L254 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 184 conjunts are in the unsatisfiable core [2019-09-07 12:28:08,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:28:08,622 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 12:28:08,623 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:28:08,629 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:28:08,630 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:28:08,630 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-09-07 12:28:45,838 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-07 12:28:45,851 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:28:45,852 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 12:28:45,853 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:28:45,887 INFO L567 ElimStorePlain]: treesize reduction 15, result has 70.0 percent of original size [2019-09-07 12:28:45,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:28:45,888 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 12:28:45,889 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:46, output treesize:19 [2019-09-07 12:28:46,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:28:46,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:28:46,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:28:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 9 proven. 200 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-07 12:28:47,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:28:47,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 90] total 187 [2019-09-07 12:28:47,138 INFO L454 AbstractCegarLoop]: Interpolant automaton has 187 states [2019-09-07 12:28:47,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2019-09-07 12:28:47,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1041, Invalid=33741, Unknown=0, NotChecked=0, Total=34782 [2019-09-07 12:28:47,140 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 187 states. [2019-09-07 12:28:52,587 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 45 [2019-09-07 12:28:56,042 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 60 [2019-09-07 12:28:57,213 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 60 [2019-09-07 12:28:58,070 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 52 [2019-09-07 12:28:59,305 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 60 [2019-09-07 12:29:00,004 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 50 [2019-09-07 12:29:01,294 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 71 [2019-09-07 12:29:02,938 WARN L188 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 89 [2019-09-07 12:29:14,573 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 79 [2019-09-07 12:29:36,695 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 81 [2019-09-07 12:29:38,197 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 77 [2019-09-07 12:29:42,765 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 66 [2019-09-07 12:29:45,483 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 70 [2019-09-07 12:29:46,321 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 69 [2019-09-07 12:29:48,599 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 77 [2019-09-07 12:29:49,810 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 77 [2019-09-07 12:29:51,945 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 69 [2019-09-07 12:29:52,871 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 70 [2019-09-07 12:29:54,083 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 64 [2019-09-07 12:29:55,459 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 66 [2019-09-07 12:29:56,939 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 72 [2019-09-07 12:29:57,695 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 64 [2019-09-07 12:29:58,901 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 58 [2019-09-07 12:30:02,825 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 83 [2019-09-07 12:30:04,149 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 63 [2019-09-07 12:30:09,244 WARN L188 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 85 [2019-09-07 12:30:10,021 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 56 [2019-09-07 12:30:16,881 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 70 [2019-09-07 12:30:17,876 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-07 12:30:18,643 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 82 [2019-09-07 12:30:19,853 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2019-09-07 12:30:20,778 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 79 [2019-09-07 12:30:22,181 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 93 [2019-09-07 12:30:23,128 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 84 [2019-09-07 12:30:25,822 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 74 [2019-09-07 12:30:26,702 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 82 [2019-09-07 12:30:36,996 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 74 [2019-09-07 12:30:47,571 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 103 [2019-09-07 12:31:00,973 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 62 [2019-09-07 12:31:02,270 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2019-09-07 12:31:03,204 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2019-09-07 12:31:04,864 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 100 [2019-09-07 12:31:05,996 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 86 [2019-09-07 12:31:07,719 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 92 [2019-09-07 12:31:08,846 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 96 [2019-09-07 12:31:10,675 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 89 [2019-09-07 12:31:11,650 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 87 [2019-09-07 12:31:17,314 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 81 [2019-09-07 12:31:23,892 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 93 [2019-09-07 12:31:30,397 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 68 [2019-09-07 12:31:32,283 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2019-09-07 12:31:33,453 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2019-09-07 12:31:35,593 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2019-09-07 12:31:36,992 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 93 [2019-09-07 12:31:39,787 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 100 [2019-09-07 12:31:41,221 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 99 [2019-09-07 12:31:44,047 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 101 [2019-09-07 12:31:45,240 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 85 [2019-09-07 12:31:50,955 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2019-09-07 12:31:51,909 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 95 [2019-09-07 12:31:53,610 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 98 [2019-09-07 12:31:54,635 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 80 [2019-09-07 12:31:56,443 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 87 [2019-09-07 12:31:57,467 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 87 [2019-09-07 12:31:59,252 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 85 [2019-09-07 12:32:00,072 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 83 [2019-09-07 12:32:04,645 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 80 [2019-09-07 12:32:10,246 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 90 [2019-09-07 12:32:15,776 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 66 [2019-09-07 12:32:17,187 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 77 [2019-09-07 12:32:18,076 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 66 [2019-09-07 12:32:19,496 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 72 [2019-09-07 12:32:20,237 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 65 [2019-09-07 12:32:21,598 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 58 [2019-09-07 12:32:23,141 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 54 [2019-09-07 12:32:26,651 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2019-09-07 12:32:27,467 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 64 [2019-09-07 12:32:28,642 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 76 [2019-09-07 12:32:31,588 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 37 [2019-09-07 12:32:32,202 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 36 [2019-09-07 12:32:33,107 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 22 [2019-09-07 12:32:33,956 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 26 [2019-09-07 12:32:34,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:32:34,808 INFO L93 Difference]: Finished difference Result 411 states and 444 transitions. [2019-09-07 12:32:34,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2019-09-07 12:32:34,809 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 118 [2019-09-07 12:32:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:32:34,811 INFO L225 Difference]: With dead ends: 411 [2019-09-07 12:32:34,811 INFO L226 Difference]: Without dead ends: 208 [2019-09-07 12:32:34,816 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 28 SyntacticMatches, 8 SemanticMatches, 349 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35935 ImplicationChecksByTransitivity, 253.8s TimeCoverageRelationStatistics Valid=5047, Invalid=117779, Unknown=24, NotChecked=0, Total=122850 [2019-09-07 12:32:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-09-07 12:32:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2019-09-07 12:32:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-09-07 12:32:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 213 transitions. [2019-09-07 12:32:34,835 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 213 transitions. Word has length 118 [2019-09-07 12:32:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:32:34,835 INFO L475 AbstractCegarLoop]: Abstraction has 198 states and 213 transitions. [2019-09-07 12:32:34,835 INFO L476 AbstractCegarLoop]: Interpolant automaton has 187 states. [2019-09-07 12:32:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 213 transitions. [2019-09-07 12:32:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-09-07 12:32:34,837 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:32:34,837 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:32:34,838 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:32:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:32:34,838 INFO L82 PathProgramCache]: Analyzing trace with hash -717638120, now seen corresponding path program 13 times [2019-09-07 12:32:34,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:32:34,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:32:34,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:34,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:32:34,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:32:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2019-09-07 12:32:35,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:32:35,008 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 12:32:35,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:32:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:32:35,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-07 12:32:35,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:32:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (14)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 12:32:35,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:32:35,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2019-09-07 12:32:35,238 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-07 12:32:35,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-07 12:32:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2019-09-07 12:32:35,239 INFO L87 Difference]: Start difference. First operand 198 states and 213 transitions. Second operand 22 states. [2019-09-07 12:32:36,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:32:36,228 INFO L93 Difference]: Finished difference Result 299 states and 327 transitions. [2019-09-07 12:32:36,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 12:32:36,229 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 122 [2019-09-07 12:32:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:32:36,230 INFO L225 Difference]: With dead ends: 299 [2019-09-07 12:32:36,230 INFO L226 Difference]: Without dead ends: 145 [2019-09-07 12:32:36,231 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2019-09-07 12:32:36,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-09-07 12:32:36,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2019-09-07 12:32:36,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-09-07 12:32:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2019-09-07 12:32:36,243 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 122 [2019-09-07 12:32:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:32:36,244 INFO L475 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2019-09-07 12:32:36,244 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-07 12:32:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2019-09-07 12:32:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-07 12:32:36,245 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:32:36,245 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:32:36,246 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:32:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:32:36,246 INFO L82 PathProgramCache]: Analyzing trace with hash -742512630, now seen corresponding path program 14 times [2019-09-07 12:32:36,246 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:32:36,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:32:36,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:36,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:32:36,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:32:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:32:38,012 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2019-09-07 12:32:38,178 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2019-09-07 12:32:38,392 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2019-09-07 12:32:38,630 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2019-09-07 12:32:38,902 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 39 [2019-09-07 12:32:39,194 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2019-09-07 12:32:39,477 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2019-09-07 12:32:39,738 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2019-09-07 12:32:39,914 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 44 [2019-09-07 12:32:40,101 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41 [2019-09-07 12:32:40,351 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 45 [2019-09-07 12:32:40,589 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2019-09-07 12:32:40,842 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 48 [2019-09-07 12:32:41,110 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 49 [2019-09-07 12:32:41,391 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2019-09-07 12:32:41,669 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2019-09-07 12:32:41,924 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 51 [2019-09-07 12:32:42,202 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 51 [2019-09-07 12:32:42,535 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2019-09-07 12:32:42,878 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2019-09-07 12:32:43,218 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2019-09-07 12:32:43,447 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2019-09-07 12:32:43,673 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2019-09-07 12:32:43,923 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2019-09-07 12:32:44,190 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2019-09-07 12:32:44,449 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2019-09-07 12:32:44,713 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 53 [2019-09-07 12:32:44,987 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 51 [2019-09-07 12:32:45,278 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 54 [2019-09-07 12:32:45,578 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 55 [2019-09-07 12:32:45,883 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 56 [2019-09-07 12:32:46,217 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2019-09-07 12:32:46,588 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2019-09-07 12:32:47,009 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 57 [2019-09-07 12:32:47,258 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2019-09-07 12:32:47,503 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2019-09-07 12:32:47,816 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2019-09-07 12:32:48,099 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 53 [2019-09-07 12:32:48,451 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 55 [2019-09-07 12:32:48,824 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2019-09-07 12:32:49,242 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 59 [2019-09-07 12:32:49,656 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 62 [2019-09-07 12:32:50,094 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 59 [2019-09-07 12:32:50,552 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 61 [2019-09-07 12:32:51,013 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2019-09-07 12:32:51,441 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 62 [2019-09-07 12:32:51,903 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2019-09-07 12:32:52,252 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-07 12:32:52,544 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-07 12:32:52,948 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2019-09-07 12:32:53,300 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2019-09-07 12:32:53,744 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2019-09-07 12:32:54,245 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2019-09-07 12:32:54,656 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2019-09-07 12:32:55,134 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2019-09-07 12:32:55,624 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2019-09-07 12:32:56,140 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 61 [2019-09-07 12:32:56,628 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2019-09-07 12:32:57,168 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 61 [2019-09-07 12:32:57,659 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2019-09-07 12:32:58,060 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2019-09-07 12:32:58,447 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2019-09-07 12:32:58,873 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2019-09-07 12:32:59,303 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 50 [2019-09-07 12:32:59,785 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2019-09-07 12:33:00,223 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2019-09-07 12:33:00,719 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2019-09-07 12:33:01,211 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 59 [2019-09-07 12:33:01,722 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2019-09-07 12:33:02,181 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-07 12:33:02,686 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2019-09-07 12:33:03,247 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2019-09-07 12:33:03,744 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2019-09-07 12:33:04,621 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2019-09-07 12:33:05,132 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2019-09-07 12:33:05,608 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2019-09-07 12:33:06,117 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 57 [2019-09-07 12:33:06,597 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 61 [2019-09-07 12:33:07,095 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 59 [2019-09-07 12:33:07,663 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2019-09-07 12:33:08,244 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2019-09-07 12:33:08,849 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 62 [2019-09-07 12:33:09,308 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2019-09-07 12:33:10,062 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2019-09-07 12:33:10,470 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2019-09-07 12:33:10,893 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2019-09-07 12:33:11,362 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2019-09-07 12:33:11,867 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2019-09-07 12:33:12,306 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2019-09-07 12:33:12,773 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2019-09-07 12:33:13,213 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2019-09-07 12:33:13,676 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2019-09-07 12:33:14,059 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2019-09-07 12:33:14,617 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2019-09-07 12:33:14,947 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2019-09-07 12:33:15,279 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-07 12:33:15,579 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2019-09-07 12:33:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 78 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:33:17,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:33:17,828 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 12:33:17,839 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-07 12:33:17,907 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-07 12:33:17,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:33:17,912 WARN L254 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 217 conjunts are in the unsatisfiable core [2019-09-07 12:33:17,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:33:18,710 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 12:33:18,711 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-07 12:33:18,716 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-07 12:33:18,717 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-07 12:33:18,717 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-09-07 12:33:43,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 12:33:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:33:43,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:33:43,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 101] total 210 [2019-09-07 12:33:43,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 210 states [2019-09-07 12:33:43,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2019-09-07 12:33:43,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1406, Invalid=42484, Unknown=0, NotChecked=0, Total=43890 [2019-09-07 12:33:43,728 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 210 states. [2019-09-07 12:33:49,115 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 45 [2019-09-07 12:33:51,752 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 50 [2019-09-07 12:33:52,615 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 55 [2019-09-07 12:33:53,627 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 53 [2019-09-07 12:33:54,638 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 55 [2019-09-07 12:33:55,698 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 48 [2019-09-07 12:33:56,737 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 51 [2019-09-07 12:33:57,364 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 56 [2019-09-07 12:33:58,023 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 50 [2019-09-07 12:33:58,737 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 63 [2019-09-07 12:34:00,150 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 41 [2019-09-07 12:34:01,186 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 44 [2019-09-07 12:34:01,505 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 49 [2019-09-07 12:34:02,573 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2019-09-07 12:34:03,531 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 40 [2019-09-07 12:34:04,959 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 43 [2019-09-07 12:34:05,916 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 59 [2019-09-07 12:34:07,012 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 41 [2019-09-07 12:34:07,898 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 61 [2019-09-07 12:34:08,962 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 45 [2019-09-07 12:34:10,035 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 71 [2019-09-07 12:34:11,154 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 41 [2019-09-07 12:34:12,214 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 66 [2019-09-07 12:34:13,288 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 44 [2019-09-07 12:34:14,322 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 54 [2019-09-07 12:34:15,467 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 45 [2019-09-07 12:34:16,494 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 57 [2019-09-07 12:34:17,633 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 47 [2019-09-07 12:34:18,345 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 56 [2019-09-07 12:34:19,434 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 41 [2019-09-07 12:34:20,194 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 57 [2019-09-07 12:34:21,281 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 44 [2019-09-07 12:34:21,964 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 59 [2019-09-07 12:34:22,543 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 42 [2019-09-07 12:34:25,865 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 60 [2019-09-07 12:34:26,696 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 62 [2019-09-07 12:34:27,542 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 62 [2019-09-07 12:34:28,410 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 64 [2019-09-07 12:34:29,483 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 56 [2019-09-07 12:34:30,534 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 59 [2019-09-07 12:34:31,187 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 58 [2019-09-07 12:34:31,957 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 57 [2019-09-07 12:34:32,832 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 58 [2019-09-07 12:34:35,438 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2019-09-07 12:34:36,349 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 60 [2019-09-07 12:34:37,226 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 62 [2019-09-07 12:34:38,175 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 59 [2019-09-07 12:34:39,250 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 61 [2019-09-07 12:34:40,326 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 55 [2019-09-07 12:34:41,422 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 58 [2019-09-07 12:34:42,130 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 57 [2019-09-07 12:34:42,872 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 56 [2019-09-07 12:34:43,514 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 62 [2019-09-07 12:34:45,642 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-07 12:34:46,987 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 66 [2019-09-07 12:34:47,828 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 68 [2019-09-07 12:34:48,788 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 69 [2019-09-07 12:34:49,643 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 70 [2019-09-07 12:34:50,576 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 67 [2019-09-07 12:34:51,521 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 69 [2019-09-07 12:34:52,245 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 72 [2019-09-07 12:34:54,150 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2019-09-07 12:34:55,538 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 60 [2019-09-07 12:34:56,352 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 63 [2019-09-07 12:34:57,176 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 58 [2019-09-07 12:34:58,024 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 62 [2019-09-07 12:34:58,939 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 61 [2019-09-07 12:34:59,753 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 72 [2019-09-07 12:35:00,458 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 58 [2019-09-07 12:35:03,688 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 66 [2019-09-07 12:35:04,601 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 68 [2019-09-07 12:35:05,660 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 64 [2019-09-07 12:35:06,598 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 60 [2019-09-07 12:35:07,592 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 57 [2019-09-07 12:35:08,582 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 59 [2019-09-07 12:35:09,266 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 62 [2019-09-07 12:35:10,944 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 45 [2019-09-07 12:35:11,744 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 46 [2019-09-07 12:35:12,897 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2019-09-07 12:35:13,874 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 19 [2019-09-07 12:35:15,262 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 9 [2019-09-07 12:35:16,156 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 49 [2019-09-07 12:35:17,204 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 12 [2019-09-07 12:35:17,988 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 52 [2019-09-07 12:35:18,999 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 44 [2019-09-07 12:35:20,106 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 11 [2019-09-07 12:35:20,953 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 48 [2019-09-07 12:35:21,983 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 46 [2019-09-07 12:35:23,074 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 11 [2019-09-07 12:35:23,927 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 48 [2019-09-07 12:35:24,676 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 42 [2019-09-07 12:35:25,691 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 11 [2019-09-07 12:35:26,282 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 42 [2019-09-07 12:35:27,052 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 44 [2019-09-07 12:35:27,669 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 32 [2019-09-07 12:35:29,005 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 46 [2019-09-07 12:35:29,824 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 48 [2019-09-07 12:35:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:35:30,370 INFO L93 Difference]: Finished difference Result 492 states and 527 transitions. [2019-09-07 12:35:30,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2019-09-07 12:35:30,371 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 136 [2019-09-07 12:35:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:35:30,373 INFO L225 Difference]: With dead ends: 492 [2019-09-07 12:35:30,373 INFO L226 Difference]: Without dead ends: 240 [2019-09-07 12:35:30,378 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 37 SyntacticMatches, 12 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36106 ImplicationChecksByTransitivity, 140.5s TimeCoverageRelationStatistics Valid=7481, Invalid=116775, Unknown=0, NotChecked=0, Total=124256 [2019-09-07 12:35:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2019-09-07 12:35:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 228. [2019-09-07 12:35:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2019-09-07 12:35:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 243 transitions. [2019-09-07 12:35:30,396 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 243 transitions. Word has length 136 [2019-09-07 12:35:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:35:30,396 INFO L475 AbstractCegarLoop]: Abstraction has 228 states and 243 transitions. [2019-09-07 12:35:30,396 INFO L476 AbstractCegarLoop]: Interpolant automaton has 210 states. [2019-09-07 12:35:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 243 transitions. [2019-09-07 12:35:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-07 12:35:30,398 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:35:30,398 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:35:30,398 INFO L418 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:35:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:35:30,398 INFO L82 PathProgramCache]: Analyzing trace with hash 441573510, now seen corresponding path program 15 times [2019-09-07 12:35:30,399 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:35:30,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:35:30,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:35:30,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:35:30,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:35:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:35:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2019-09-07 12:35:30,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:35:30,584 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) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:35:30,598 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-07 12:35:30,732 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-09-07 12:35:30,732 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-07 12:35:30,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 12:35:30,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:35:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (16)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 12:35:31,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:35:31,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-09-07 12:35:31,106 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-07 12:35:31,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-07 12:35:31,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2019-09-07 12:35:31,107 INFO L87 Difference]: Start difference. First operand 228 states and 243 transitions. Second operand 32 states. [2019-09-07 12:35:32,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:35:32,592 INFO L93 Difference]: Finished difference Result 342 states and 370 transitions. [2019-09-07 12:35:32,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-07 12:35:32,593 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 140 [2019-09-07 12:35:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:35:32,594 INFO L225 Difference]: With dead ends: 342 [2019-09-07 12:35:32,594 INFO L226 Difference]: Without dead ends: 164 [2019-09-07 12:35:32,595 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=2142, Unknown=0, NotChecked=0, Total=2550 [2019-09-07 12:35:32,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-09-07 12:35:32,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 155. [2019-09-07 12:35:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-09-07 12:35:32,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2019-09-07 12:35:32,609 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 140 [2019-09-07 12:35:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:35:32,610 INFO L475 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2019-09-07 12:35:32,610 INFO L476 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-09-07 12:35:32,610 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2019-09-07 12:35:32,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-09-07 12:35:32,611 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:35:32,612 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:35:32,612 INFO L418 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:35:32,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:35:32,612 INFO L82 PathProgramCache]: Analyzing trace with hash -566543880, now seen corresponding path program 16 times [2019-09-07 12:35:32,612 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:35:32,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:35:32,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:35:32,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-07 12:35:32,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:35:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:35:34,497 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 39 [2019-09-07 12:35:34,740 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 38 [2019-09-07 12:35:34,907 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2019-09-07 12:35:35,163 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 43 [2019-09-07 12:35:35,442 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2019-09-07 12:35:35,668 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2019-09-07 12:35:35,886 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2019-09-07 12:35:36,086 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2019-09-07 12:35:36,289 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2019-09-07 12:35:36,515 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2019-09-07 12:35:36,762 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 48 [2019-09-07 12:35:37,028 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 50 [2019-09-07 12:35:37,310 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 54 [2019-09-07 12:35:37,619 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 51 [2019-09-07 12:35:37,959 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 51 [2019-09-07 12:35:38,269 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2019-09-07 12:35:38,582 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2019-09-07 12:35:38,916 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2019-09-07 12:35:39,255 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2019-09-07 12:35:39,597 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 57 [2019-09-07 12:35:39,954 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 56 [2019-09-07 12:35:40,286 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2019-09-07 12:35:40,532 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 53 [2019-09-07 12:35:40,760 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2019-09-07 12:35:41,023 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 50 [2019-09-07 12:35:41,335 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 53 [2019-09-07 12:35:41,727 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 56 [2019-09-07 12:35:42,080 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 58 [2019-09-07 12:35:42,490 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 59 [2019-09-07 12:35:42,905 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 59 [2019-09-07 12:35:43,330 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 61 [2019-09-07 12:35:43,749 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 62 [2019-09-07 12:35:44,199 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2019-09-07 12:35:44,661 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 63 [2019-09-07 12:35:45,088 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 64 [2019-09-07 12:35:45,524 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 63 [2019-09-07 12:35:45,954 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 64 [2019-09-07 12:35:46,316 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2019-09-07 12:35:46,663 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2019-09-07 12:35:47,038 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 56 [2019-09-07 12:35:47,423 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 60 [2019-09-07 12:35:47,857 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 63 [2019-09-07 12:35:48,308 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 63 [2019-09-07 12:35:48,801 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 64 [2019-09-07 12:35:49,266 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 66 [2019-09-07 12:35:49,720 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 62 [2019-09-07 12:35:50,186 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 64 [2019-09-07 12:35:50,658 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 62 [2019-09-07 12:35:51,159 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 64 [2019-09-07 12:35:51,707 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 58 [2019-09-07 12:35:52,199 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 61 [2019-09-07 12:35:52,673 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 60 [2019-09-07 12:35:53,059 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 59 [2019-09-07 12:35:53,435 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55 [2019-09-07 12:35:53,894 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 58 [2019-09-07 12:35:54,322 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 60 [2019-09-07 12:35:54,799 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 70 [2019-09-07 12:35:55,291 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 67 [2019-09-07 12:35:55,803 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 72 [2019-09-07 12:35:56,326 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 72 [2019-09-07 12:35:56,873 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-07 12:35:57,405 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2019-09-07 12:35:57,939 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2019-09-07 12:35:58,496 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 66 [2019-09-07 12:35:59,041 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 66 [2019-09-07 12:35:59,597 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 67 [2019-09-07 12:36:00,094 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2019-09-07 12:36:00,556 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2019-09-07 12:36:00,985 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 57 [2019-09-07 12:36:01,419 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 59 [2019-09-07 12:36:01,883 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 62