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/float-benchs/zonotope_3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:16:10,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:16:10,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:16:10,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 01:16:10,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:16:10,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:16:10,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:16:10,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:16:10,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:16:10,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:16:10,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:16:10,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:16:10,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:16:10,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:16:10,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:16:10,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:16:10,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 01:16:10,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:16:10,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:16:10,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:16:10,490 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 [2019-09-08 01:16:10,505 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:16:10,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:16:10,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:16:10,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:16:10,507 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:16:10,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:16:10,507 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:16:10,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:16:10,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:16:10,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:16:10,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:16:10,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:16:10,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:16:10,509 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:16:10,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:16:10,509 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:16:10,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:16:10,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:16:10,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:16:10,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:16:10,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:16:10,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:16:10,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:16:10,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:16:10,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:16:10,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:16:10,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:16:10,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:16:10,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:16:10,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:16:10,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:16:10,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:16:10,570 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:16:10,570 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:16:10,571 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2019-09-08 01:16:10,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d78442326/bccee801b9dd46ec9aff8a902ac2a5f5/FLAG89e865aee [2019-09-08 01:16:11,168 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:16:11,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c.v+lhb-reducer.c [2019-09-08 01:16:11,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d78442326/bccee801b9dd46ec9aff8a902ac2a5f5/FLAG89e865aee [2019-09-08 01:16:11,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d78442326/bccee801b9dd46ec9aff8a902ac2a5f5 [2019-09-08 01:16:11,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:16:11,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:16:11,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:16:11,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:16:11,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:16:11,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:16:11" (1/1) ... [2019-09-08 01:16:11,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45461857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:11, skipping insertion in model container [2019-09-08 01:16:11,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:16:11" (1/1) ... [2019-09-08 01:16:11,570 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:16:11,629 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:16:12,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:16:12,030 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:16:12,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:16:12,130 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:16:12,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12 WrapperNode [2019-09-08 01:16:12,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:16:12,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:16:12,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:16:12,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:16:12,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12" (1/1) ... [2019-09-08 01:16:12,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12" (1/1) ... [2019-09-08 01:16:12,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12" (1/1) ... [2019-09-08 01:16:12,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12" (1/1) ... [2019-09-08 01:16:12,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12" (1/1) ... [2019-09-08 01:16:12,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12" (1/1) ... [2019-09-08 01:16:12,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12" (1/1) ... [2019-09-08 01:16:12,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:16:12,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:16:12,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:16:12,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:16:12,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12" (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 [2019-09-08 01:16:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:16:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:16:12,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:16:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:16:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-08 01:16:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 01:16:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 01:16:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-09-08 01:16:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-09-08 01:16:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:16:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:16:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:16:12,866 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:16:12,866 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 01:16:12,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:16:12 BoogieIcfgContainer [2019-09-08 01:16:12,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:16:12,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:16:12,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:16:12,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:16:12,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:16:11" (1/3) ... [2019-09-08 01:16:12,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a285c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:16:12, skipping insertion in model container [2019-09-08 01:16:12,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:16:12" (2/3) ... [2019-09-08 01:16:12,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a285c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:16:12, skipping insertion in model container [2019-09-08 01:16:12,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:16:12" (3/3) ... [2019-09-08 01:16:12,877 INFO L109 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.v+lhb-reducer.c [2019-09-08 01:16:12,888 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:16:12,897 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:16:12,916 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:16:12,948 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:16:12,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:16:12,949 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:16:12,949 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:16:12,949 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:16:12,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:16:12,950 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:16:12,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:16:12,950 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:16:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2019-09-08 01:16:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-08 01:16:12,979 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:12,980 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:12,983 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:12,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:12,989 INFO L82 PathProgramCache]: Analyzing trace with hash -473065534, now seen corresponding path program 1 times [2019-09-08 01:16:12,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:12,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:13,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:13,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:13,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:13,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:16:13,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:16:13,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:16:13,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:16:13,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:16:13,457 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2019-09-08 01:16:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:13,517 INFO L93 Difference]: Finished difference Result 71 states and 113 transitions. [2019-09-08 01:16:13,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 01:16:13,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2019-09-08 01:16:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:13,529 INFO L225 Difference]: With dead ends: 71 [2019-09-08 01:16:13,530 INFO L226 Difference]: Without dead ends: 55 [2019-09-08 01:16:13,534 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 01:16:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-08 01:16:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-09-08 01:16:13,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-09-08 01:16:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2019-09-08 01:16:13,577 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 49 [2019-09-08 01:16:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:13,578 INFO L475 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2019-09-08 01:16:13,578 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:16:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2019-09-08 01:16:13,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-08 01:16:13,580 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:13,580 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:13,581 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:13,581 INFO L82 PathProgramCache]: Analyzing trace with hash -457961497, now seen corresponding path program 1 times [2019-09-08 01:16:13,582 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:13,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:13,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:13,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:13,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:13,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:16:13,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-09-08 01:16:13,897 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 01:16:13,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 01:16:13,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-09-08 01:16:13,900 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 12 states. [2019-09-08 01:16:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:14,040 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2019-09-08 01:16:14,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 01:16:14,040 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2019-09-08 01:16:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:14,042 INFO L225 Difference]: With dead ends: 68 [2019-09-08 01:16:14,043 INFO L226 Difference]: Without dead ends: 61 [2019-09-08 01:16:14,044 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-09-08 01:16:14,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-09-08 01:16:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2019-09-08 01:16:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-09-08 01:16:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2019-09-08 01:16:14,052 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 49 [2019-09-08 01:16:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:14,053 INFO L475 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2019-09-08 01:16:14,053 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 01:16:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2019-09-08 01:16:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-08 01:16:14,055 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:14,055 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:14,055 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:14,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:14,056 INFO L82 PathProgramCache]: Analyzing trace with hash 181592694, now seen corresponding path program 1 times [2019-09-08 01:16:14,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:14,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:14,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:14,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:14,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:14,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:16:14,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 01:16:14,143 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 01:16:14,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 01:16:14,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:16:14,145 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 3 states. [2019-09-08 01:16:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:14,161 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2019-09-08 01:16:14,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 01:16:14,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-09-08 01:16:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:14,164 INFO L225 Difference]: With dead ends: 71 [2019-09-08 01:16:14,164 INFO L226 Difference]: Without dead ends: 56 [2019-09-08 01:16:14,166 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 [2019-09-08 01:16:14,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-09-08 01:16:14,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-09-08 01:16:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-09-08 01:16:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2019-09-08 01:16:14,181 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2019-09-08 01:16:14,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:14,184 INFO L475 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2019-09-08 01:16:14,184 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 01:16:14,184 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2019-09-08 01:16:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-08 01:16:14,186 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:14,188 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:14,188 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:14,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2020002747, now seen corresponding path program 1 times [2019-09-08 01:16:14,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:14,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:14,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:14,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:14,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:14,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:14,420 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-09-08 01:16:14,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:14,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 01:16:14,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:14,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:14,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-09-08 01:16:14,667 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 01:16:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 01:16:14,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-09-08 01:16:14,669 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 13 states. [2019-09-08 01:16:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:14,838 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2019-09-08 01:16:14,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 01:16:14,841 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2019-09-08 01:16:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:14,842 INFO L225 Difference]: With dead ends: 71 [2019-09-08 01:16:14,842 INFO L226 Difference]: Without dead ends: 64 [2019-09-08 01:16:14,843 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-09-08 01:16:14,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-09-08 01:16:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2019-09-08 01:16:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-09-08 01:16:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2019-09-08 01:16:14,851 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2019-09-08 01:16:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:14,851 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2019-09-08 01:16:14,851 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 01:16:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2019-09-08 01:16:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-08 01:16:14,853 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:14,853 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:14,854 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:14,854 INFO L82 PathProgramCache]: Analyzing trace with hash -403418009, now seen corresponding path program 2 times [2019-09-08 01:16:14,854 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:14,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:14,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:14,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:14,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:15,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:15,031 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) [2019-09-08 01:16:15,045 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:15,196 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:16:15,197 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:15,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 01:16:15,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:15,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:15,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-09-08 01:16:15,238 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-08 01:16:15,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-08 01:16:15,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-09-08 01:16:15,238 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 14 states. [2019-09-08 01:16:15,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:15,351 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2019-09-08 01:16:15,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 01:16:15,352 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2019-09-08 01:16:15,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:15,353 INFO L225 Difference]: With dead ends: 76 [2019-09-08 01:16:15,355 INFO L226 Difference]: Without dead ends: 69 [2019-09-08 01:16:15,356 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-09-08 01:16:15,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-09-08 01:16:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2019-09-08 01:16:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-09-08 01:16:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2019-09-08 01:16:15,368 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 59 [2019-09-08 01:16:15,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:15,369 INFO L475 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2019-09-08 01:16:15,369 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-08 01:16:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2019-09-08 01:16:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 01:16:15,372 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:15,372 INFO L399 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:15,373 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:15,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1629312827, now seen corresponding path program 3 times [2019-09-08 01:16:15,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:15,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:15,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:15,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:15,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:15,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:15,583 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 [2019-09-08 01:16:15,597 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:16:15,763 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-09-08 01:16:15,764 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:15,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-08 01:16:15,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:15,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:15,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-09-08 01:16:15,798 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 01:16:15,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 01:16:15,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-09-08 01:16:15,798 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 15 states. [2019-09-08 01:16:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:15,925 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2019-09-08 01:16:15,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-08 01:16:15,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2019-09-08 01:16:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:15,927 INFO L225 Difference]: With dead ends: 81 [2019-09-08 01:16:15,927 INFO L226 Difference]: Without dead ends: 74 [2019-09-08 01:16:15,928 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-09-08 01:16:15,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-09-08 01:16:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2019-09-08 01:16:15,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-09-08 01:16:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2019-09-08 01:16:15,934 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 64 [2019-09-08 01:16:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:15,934 INFO L475 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2019-09-08 01:16:15,935 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 01:16:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2019-09-08 01:16:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-08 01:16:15,936 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:15,936 INFO L399 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:15,936 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:15,937 INFO L82 PathProgramCache]: Analyzing trace with hash 218691815, now seen corresponding path program 4 times [2019-09-08 01:16:15,937 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:15,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:15,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:15,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:15,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:16,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:16,114 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 [2019-09-08 01:16:16,131 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:16:16,272 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:16:16,272 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:16,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-08 01:16:16,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:16,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:16,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-09-08 01:16:16,330 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-08 01:16:16,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-08 01:16:16,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-09-08 01:16:16,331 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 16 states. [2019-09-08 01:16:16,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:16,469 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2019-09-08 01:16:16,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-08 01:16:16,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2019-09-08 01:16:16,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:16,471 INFO L225 Difference]: With dead ends: 86 [2019-09-08 01:16:16,471 INFO L226 Difference]: Without dead ends: 79 [2019-09-08 01:16:16,471 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-09-08 01:16:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-09-08 01:16:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2019-09-08 01:16:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-09-08 01:16:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2019-09-08 01:16:16,484 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 69 [2019-09-08 01:16:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:16,487 INFO L475 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2019-09-08 01:16:16,487 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-08 01:16:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2019-09-08 01:16:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-09-08 01:16:16,488 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:16,488 INFO L399 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:16,488 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash -38042949, now seen corresponding path program 5 times [2019-09-08 01:16:16,489 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:16,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:16,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:16,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:16,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:16,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:16,724 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:16:16,740 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:16,902 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-09-08 01:16:16,902 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:16,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 01:16:16,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:16,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:16,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-09-08 01:16:16,954 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 01:16:16,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 01:16:16,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-09-08 01:16:16,955 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 17 states. [2019-09-08 01:16:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:17,080 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2019-09-08 01:16:17,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-08 01:16:17,081 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2019-09-08 01:16:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:17,085 INFO L225 Difference]: With dead ends: 91 [2019-09-08 01:16:17,085 INFO L226 Difference]: Without dead ends: 84 [2019-09-08 01:16:17,087 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-09-08 01:16:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-09-08 01:16:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2019-09-08 01:16:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-09-08 01:16:17,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2019-09-08 01:16:17,101 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2019-09-08 01:16:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:17,102 INFO L475 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2019-09-08 01:16:17,102 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 01:16:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2019-09-08 01:16:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-09-08 01:16:17,104 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:17,106 INFO L399 BasicCegarLoop]: trace histogram [7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:17,107 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash -570819225, now seen corresponding path program 6 times [2019-09-08 01:16:17,107 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:17,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:17,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:17,111 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:17,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:17,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:17,357 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 [2019-09-08 01:16:17,371 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:16:17,576 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-09-08 01:16:17,577 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:17,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-08 01:16:17,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:17,615 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:17,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-09-08 01:16:17,616 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-08 01:16:17,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-08 01:16:17,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-09-08 01:16:17,617 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 18 states. [2019-09-08 01:16:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:17,733 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2019-09-08 01:16:17,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-08 01:16:17,734 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2019-09-08 01:16:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:17,735 INFO L225 Difference]: With dead ends: 96 [2019-09-08 01:16:17,735 INFO L226 Difference]: Without dead ends: 89 [2019-09-08 01:16:17,735 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-09-08 01:16:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-09-08 01:16:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2019-09-08 01:16:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-09-08 01:16:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2019-09-08 01:16:17,747 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 79 [2019-09-08 01:16:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:17,747 INFO L475 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2019-09-08 01:16:17,749 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-08 01:16:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2019-09-08 01:16:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-08 01:16:17,753 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:17,753 INFO L399 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:17,753 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:17,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:17,754 INFO L82 PathProgramCache]: Analyzing trace with hash -918991301, now seen corresponding path program 7 times [2019-09-08 01:16:17,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:17,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:17,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:17,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:17,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:18,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:18,031 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) [2019-09-08 01:16:18,052 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 [2019-09-08 01:16:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:18,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-08 01:16:18,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:18,250 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:18,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-09-08 01:16:18,251 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 01:16:18,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 01:16:18,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-09-08 01:16:18,252 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 19 states. [2019-09-08 01:16:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:18,366 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2019-09-08 01:16:18,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-08 01:16:18,367 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 84 [2019-09-08 01:16:18,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:18,368 INFO L225 Difference]: With dead ends: 101 [2019-09-08 01:16:18,368 INFO L226 Difference]: Without dead ends: 94 [2019-09-08 01:16:18,369 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-09-08 01:16:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-09-08 01:16:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2019-09-08 01:16:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-09-08 01:16:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2019-09-08 01:16:18,380 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 84 [2019-09-08 01:16:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:18,381 INFO L475 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2019-09-08 01:16:18,381 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-08 01:16:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2019-09-08 01:16:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-08 01:16:18,382 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:18,382 INFO L399 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:18,382 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash -87072281, now seen corresponding path program 8 times [2019-09-08 01:16:18,383 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:18,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:18,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:18,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:18,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:18,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:18,691 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:18,706 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:16:18,861 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:16:18,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:18,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-08 01:16:18,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:18,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:18,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-09-08 01:16:18,901 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-08 01:16:18,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-08 01:16:18,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-09-08 01:16:18,902 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 20 states. [2019-09-08 01:16:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:19,028 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2019-09-08 01:16:19,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-08 01:16:19,028 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 89 [2019-09-08 01:16:19,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:19,029 INFO L225 Difference]: With dead ends: 106 [2019-09-08 01:16:19,029 INFO L226 Difference]: Without dead ends: 99 [2019-09-08 01:16:19,031 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-09-08 01:16:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-09-08 01:16:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2019-09-08 01:16:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-09-08 01:16:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2019-09-08 01:16:19,045 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 89 [2019-09-08 01:16:19,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:19,045 INFO L475 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2019-09-08 01:16:19,045 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-08 01:16:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2019-09-08 01:16:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-08 01:16:19,052 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:19,052 INFO L399 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:19,052 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash -393299525, now seen corresponding path program 9 times [2019-09-08 01:16:19,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:19,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:19,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:19,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:19,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:19,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:19,329 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 [2019-09-08 01:16:19,349 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:16:19,567 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-09-08 01:16:19,568 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:19,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-08 01:16:19,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:19,644 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:19,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2019-09-08 01:16:19,645 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-08 01:16:19,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-08 01:16:19,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-09-08 01:16:19,647 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 21 states. [2019-09-08 01:16:19,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:19,793 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2019-09-08 01:16:19,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-08 01:16:19,794 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 94 [2019-09-08 01:16:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:19,795 INFO L225 Difference]: With dead ends: 111 [2019-09-08 01:16:19,795 INFO L226 Difference]: Without dead ends: 104 [2019-09-08 01:16:19,796 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-09-08 01:16:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-09-08 01:16:19,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2019-09-08 01:16:19,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-09-08 01:16:19,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2019-09-08 01:16:19,804 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 94 [2019-09-08 01:16:19,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:19,805 INFO L475 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2019-09-08 01:16:19,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-08 01:16:19,805 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2019-09-08 01:16:19,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 01:16:19,808 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:19,808 INFO L399 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:19,808 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:19,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1718540697, now seen corresponding path program 10 times [2019-09-08 01:16:19,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:19,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:19,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:19,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:19,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:20,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:20,178 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:20,211 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:16:20,448 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:16:20,449 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:20,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-08 01:16:20,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:20,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:20,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2019-09-08 01:16:20,500 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-08 01:16:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-08 01:16:20,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-09-08 01:16:20,502 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 22 states. [2019-09-08 01:16:20,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:20,620 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2019-09-08 01:16:20,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-08 01:16:20,621 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 99 [2019-09-08 01:16:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:20,622 INFO L225 Difference]: With dead ends: 116 [2019-09-08 01:16:20,622 INFO L226 Difference]: Without dead ends: 109 [2019-09-08 01:16:20,623 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-09-08 01:16:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-09-08 01:16:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2019-09-08 01:16:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-09-08 01:16:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2019-09-08 01:16:20,628 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 99 [2019-09-08 01:16:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:20,628 INFO L475 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2019-09-08 01:16:20,628 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-08 01:16:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2019-09-08 01:16:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-08 01:16:20,629 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:20,630 INFO L399 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:20,630 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:20,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1431059141, now seen corresponding path program 11 times [2019-09-08 01:16:20,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:20,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:20,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:20,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:20,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:20,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:20,967 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) [2019-09-08 01:16:20,985 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 [2019-09-08 01:16:21,168 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-09-08 01:16:21,168 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:21,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 01:16:21,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:21,200 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:21,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2019-09-08 01:16:21,201 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-08 01:16:21,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-08 01:16:21,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-09-08 01:16:21,203 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 23 states. [2019-09-08 01:16:21,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:21,332 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2019-09-08 01:16:21,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-08 01:16:21,333 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 104 [2019-09-08 01:16:21,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:21,334 INFO L225 Difference]: With dead ends: 121 [2019-09-08 01:16:21,334 INFO L226 Difference]: Without dead ends: 114 [2019-09-08 01:16:21,335 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-09-08 01:16:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-09-08 01:16:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2019-09-08 01:16:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-09-08 01:16:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2019-09-08 01:16:21,339 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 104 [2019-09-08 01:16:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:21,340 INFO L475 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2019-09-08 01:16:21,340 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-09-08 01:16:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2019-09-08 01:16:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-08 01:16:21,341 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:21,341 INFO L399 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:21,342 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:21,342 INFO L82 PathProgramCache]: Analyzing trace with hash 105335527, now seen corresponding path program 12 times [2019-09-08 01:16:21,342 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:21,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:21,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:21,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:21,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:21,673 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:21,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:21,673 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 [2019-09-08 01:16:21,686 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:16:21,901 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-09-08 01:16:21,901 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:21,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-08 01:16:21,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:21,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:21,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2019-09-08 01:16:21,947 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 01:16:21,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 01:16:21,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-09-08 01:16:21,948 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 24 states. [2019-09-08 01:16:22,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:22,089 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2019-09-08 01:16:22,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-08 01:16:22,090 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 109 [2019-09-08 01:16:22,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:22,091 INFO L225 Difference]: With dead ends: 126 [2019-09-08 01:16:22,091 INFO L226 Difference]: Without dead ends: 119 [2019-09-08 01:16:22,092 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-09-08 01:16:22,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-09-08 01:16:22,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2019-09-08 01:16:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-09-08 01:16:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2019-09-08 01:16:22,097 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 109 [2019-09-08 01:16:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:22,097 INFO L475 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2019-09-08 01:16:22,097 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 01:16:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2019-09-08 01:16:22,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-08 01:16:22,099 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:22,099 INFO L399 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:22,099 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:22,100 INFO L82 PathProgramCache]: Analyzing trace with hash 144732347, now seen corresponding path program 13 times [2019-09-08 01:16:22,100 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:22,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:22,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:22,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:22,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:22,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:22,476 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 [2019-09-08 01:16:22,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:22,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 01:16:22,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (14)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:22,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:22,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2019-09-08 01:16:22,713 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-08 01:16:22,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-08 01:16:22,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-09-08 01:16:22,714 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 25 states. [2019-09-08 01:16:22,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:22,843 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2019-09-08 01:16:22,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-08 01:16:22,844 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2019-09-08 01:16:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:22,845 INFO L225 Difference]: With dead ends: 131 [2019-09-08 01:16:22,845 INFO L226 Difference]: Without dead ends: 124 [2019-09-08 01:16:22,848 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-09-08 01:16:22,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-09-08 01:16:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2019-09-08 01:16:22,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-09-08 01:16:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2019-09-08 01:16:22,855 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 114 [2019-09-08 01:16:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:22,856 INFO L475 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2019-09-08 01:16:22,856 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-08 01:16:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2019-09-08 01:16:22,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-09-08 01:16:22,857 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:22,857 INFO L399 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:22,857 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:22,858 INFO L82 PathProgramCache]: Analyzing trace with hash 586796903, now seen corresponding path program 14 times [2019-09-08 01:16:22,858 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:22,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:22,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:22,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:22,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:23,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:23,304 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 [2019-09-08 01:16:23,323 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:16:23,524 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:16:23,524 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:23,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-08 01:16:23,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:23,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:23,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2019-09-08 01:16:23,560 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 01:16:23,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 01:16:23,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-09-08 01:16:23,561 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 26 states. [2019-09-08 01:16:23,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:23,689 INFO L93 Difference]: Finished difference Result 136 states and 138 transitions. [2019-09-08 01:16:23,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-08 01:16:23,690 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 119 [2019-09-08 01:16:23,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:23,692 INFO L225 Difference]: With dead ends: 136 [2019-09-08 01:16:23,692 INFO L226 Difference]: Without dead ends: 129 [2019-09-08 01:16:23,693 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-09-08 01:16:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-09-08 01:16:23,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2019-09-08 01:16:23,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-09-08 01:16:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2019-09-08 01:16:23,697 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 119 [2019-09-08 01:16:23,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:23,698 INFO L475 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2019-09-08 01:16:23,698 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-08 01:16:23,698 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2019-09-08 01:16:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-08 01:16:23,699 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:23,699 INFO L399 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:23,699 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:23,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:23,700 INFO L82 PathProgramCache]: Analyzing trace with hash 625785915, now seen corresponding path program 15 times [2019-09-08 01:16:23,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:23,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:23,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:23,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:23,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:24,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:24,083 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 [2019-09-08 01:16:24,094 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:16:24,335 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-09-08 01:16:24,335 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:24,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-08 01:16:24,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:24,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:24,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2019-09-08 01:16:24,368 INFO L454 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-09-08 01:16:24,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-09-08 01:16:24,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-09-08 01:16:24,369 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 27 states. [2019-09-08 01:16:24,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:24,498 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2019-09-08 01:16:24,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-08 01:16:24,499 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 124 [2019-09-08 01:16:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:24,500 INFO L225 Difference]: With dead ends: 141 [2019-09-08 01:16:24,500 INFO L226 Difference]: Without dead ends: 134 [2019-09-08 01:16:24,501 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-09-08 01:16:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-09-08 01:16:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2019-09-08 01:16:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-09-08 01:16:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2019-09-08 01:16:24,506 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 124 [2019-09-08 01:16:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:24,506 INFO L475 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2019-09-08 01:16:24,506 INFO L476 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-09-08 01:16:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2019-09-08 01:16:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-08 01:16:24,508 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:24,508 INFO L399 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:24,508 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:24,508 INFO L82 PathProgramCache]: Analyzing trace with hash -407850009, now seen corresponding path program 16 times [2019-09-08 01:16:24,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:24,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:24,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:24,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:24,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:24,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:24,974 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:24,985 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:16:25,192 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:16:25,193 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:25,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 01:16:25,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:25,231 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:25,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2019-09-08 01:16:25,232 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-08 01:16:25,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-08 01:16:25,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-09-08 01:16:25,233 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 28 states. [2019-09-08 01:16:25,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:25,386 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2019-09-08 01:16:25,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-08 01:16:25,386 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 129 [2019-09-08 01:16:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:25,387 INFO L225 Difference]: With dead ends: 146 [2019-09-08 01:16:25,388 INFO L226 Difference]: Without dead ends: 139 [2019-09-08 01:16:25,388 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-09-08 01:16:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-09-08 01:16:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 136. [2019-09-08 01:16:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-09-08 01:16:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2019-09-08 01:16:25,393 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 129 [2019-09-08 01:16:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:25,393 INFO L475 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2019-09-08 01:16:25,394 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-08 01:16:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2019-09-08 01:16:25,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-08 01:16:25,394 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:25,395 INFO L399 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:25,395 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:25,395 INFO L82 PathProgramCache]: Analyzing trace with hash -844060741, now seen corresponding path program 17 times [2019-09-08 01:16:25,395 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:25,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:25,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:25,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:25,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:25,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:25,856 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:25,871 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:16:26,097 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-09-08 01:16:26,097 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:26,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-08 01:16:26,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:26,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:26,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2019-09-08 01:16:26,164 INFO L454 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-09-08 01:16:26,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-09-08 01:16:26,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-09-08 01:16:26,165 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 29 states. [2019-09-08 01:16:26,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:26,301 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2019-09-08 01:16:26,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-08 01:16:26,301 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 134 [2019-09-08 01:16:26,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:26,302 INFO L225 Difference]: With dead ends: 151 [2019-09-08 01:16:26,302 INFO L226 Difference]: Without dead ends: 144 [2019-09-08 01:16:26,303 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-09-08 01:16:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-09-08 01:16:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2019-09-08 01:16:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-09-08 01:16:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2019-09-08 01:16:26,307 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 134 [2019-09-08 01:16:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:26,307 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2019-09-08 01:16:26,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-09-08 01:16:26,308 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2019-09-08 01:16:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-08 01:16:26,308 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:26,309 INFO L399 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:26,309 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:26,309 INFO L82 PathProgramCache]: Analyzing trace with hash -495716249, now seen corresponding path program 18 times [2019-09-08 01:16:26,309 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:26,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:26,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:26,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:26,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:26,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:26,717 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:26,728 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:16:26,998 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-09-08 01:16:26,998 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:27,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 29 conjunts are in the unsatisfiable core [2019-09-08 01:16:27,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (19)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:27,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:27,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2019-09-08 01:16:27,040 INFO L454 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-09-08 01:16:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-09-08 01:16:27,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-09-08 01:16:27,041 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 30 states. [2019-09-08 01:16:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:27,223 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2019-09-08 01:16:27,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-08 01:16:27,224 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 139 [2019-09-08 01:16:27,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:27,225 INFO L225 Difference]: With dead ends: 156 [2019-09-08 01:16:27,225 INFO L226 Difference]: Without dead ends: 149 [2019-09-08 01:16:27,226 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-09-08 01:16:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-09-08 01:16:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2019-09-08 01:16:27,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-09-08 01:16:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2019-09-08 01:16:27,232 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 139 [2019-09-08 01:16:27,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:27,232 INFO L475 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2019-09-08 01:16:27,232 INFO L476 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-09-08 01:16:27,232 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2019-09-08 01:16:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-08 01:16:27,233 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:27,234 INFO L399 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:27,234 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:27,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:27,234 INFO L82 PathProgramCache]: Analyzing trace with hash -121359557, now seen corresponding path program 19 times [2019-09-08 01:16:27,234 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:27,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:27,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:27,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:27,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:27,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:27,704 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:27,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:27,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 30 conjunts are in the unsatisfiable core [2019-09-08 01:16:27,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:28,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:28,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2019-09-08 01:16:28,014 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-08 01:16:28,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-08 01:16:28,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-09-08 01:16:28,015 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 31 states. [2019-09-08 01:16:28,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:28,191 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2019-09-08 01:16:28,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-09-08 01:16:28,193 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 144 [2019-09-08 01:16:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:28,195 INFO L225 Difference]: With dead ends: 161 [2019-09-08 01:16:28,195 INFO L226 Difference]: Without dead ends: 154 [2019-09-08 01:16:28,196 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-09-08 01:16:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-09-08 01:16:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2019-09-08 01:16:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-09-08 01:16:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2019-09-08 01:16:28,201 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 144 [2019-09-08 01:16:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:28,201 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2019-09-08 01:16:28,202 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-08 01:16:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2019-09-08 01:16:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-09-08 01:16:28,203 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:28,203 INFO L399 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:28,203 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:28,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1219781401, now seen corresponding path program 20 times [2019-09-08 01:16:28,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:28,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:28,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:28,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:28,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:28,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:28,664 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:28,676 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:16:28,893 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:16:28,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:28,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 1673 conjuncts, 31 conjunts are in the unsatisfiable core [2019-09-08 01:16:28,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:28,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:28,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2019-09-08 01:16:28,951 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-08 01:16:28,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-08 01:16:28,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-09-08 01:16:28,953 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 32 states. [2019-09-08 01:16:29,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:29,100 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2019-09-08 01:16:29,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-08 01:16:29,100 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 149 [2019-09-08 01:16:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:29,102 INFO L225 Difference]: With dead ends: 166 [2019-09-08 01:16:29,103 INFO L226 Difference]: Without dead ends: 159 [2019-09-08 01:16:29,104 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-09-08 01:16:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-09-08 01:16:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2019-09-08 01:16:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-09-08 01:16:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2019-09-08 01:16:29,109 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 149 [2019-09-08 01:16:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:29,109 INFO L475 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2019-09-08 01:16:29,109 INFO L476 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-09-08 01:16:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2019-09-08 01:16:29,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-09-08 01:16:29,111 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:29,111 INFO L399 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:29,111 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:29,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1199529659, now seen corresponding path program 21 times [2019-09-08 01:16:29,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:29,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:29,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:29,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:29,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:29,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:29,797 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:16:29,811 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:30,093 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-09-08 01:16:30,093 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:30,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 32 conjunts are in the unsatisfiable core [2019-09-08 01:16:30,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (22)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:30,155 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:30,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2019-09-08 01:16:30,156 INFO L454 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-09-08 01:16:30,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-09-08 01:16:30,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-09-08 01:16:30,157 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 33 states. [2019-09-08 01:16:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:30,319 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2019-09-08 01:16:30,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-09-08 01:16:30,320 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 154 [2019-09-08 01:16:30,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:30,321 INFO L225 Difference]: With dead ends: 171 [2019-09-08 01:16:30,321 INFO L226 Difference]: Without dead ends: 164 [2019-09-08 01:16:30,322 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-09-08 01:16:30,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-09-08 01:16:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2019-09-08 01:16:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-09-08 01:16:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2019-09-08 01:16:30,325 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 154 [2019-09-08 01:16:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:30,327 INFO L475 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2019-09-08 01:16:30,327 INFO L476 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-09-08 01:16:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2019-09-08 01:16:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-09-08 01:16:30,328 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:30,328 INFO L399 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:30,328 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:30,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1606442649, now seen corresponding path program 22 times [2019-09-08 01:16:30,329 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:30,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:30,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:30,331 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:30,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:30,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:30,899 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:16:30,913 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:31,212 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:16:31,212 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:31,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 33 conjunts are in the unsatisfiable core [2019-09-08 01:16:31,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (23)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:31,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:31,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2019-09-08 01:16:31,262 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-09-08 01:16:31,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-09-08 01:16:31,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-09-08 01:16:31,263 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand 34 states. [2019-09-08 01:16:31,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:31,421 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2019-09-08 01:16:31,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-08 01:16:31,422 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 159 [2019-09-08 01:16:31,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:31,424 INFO L225 Difference]: With dead ends: 176 [2019-09-08 01:16:31,424 INFO L226 Difference]: Without dead ends: 169 [2019-09-08 01:16:31,425 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-09-08 01:16:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-09-08 01:16:31,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2019-09-08 01:16:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-09-08 01:16:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2019-09-08 01:16:31,430 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 159 [2019-09-08 01:16:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:31,430 INFO L475 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2019-09-08 01:16:31,430 INFO L476 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-09-08 01:16:31,431 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2019-09-08 01:16:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-09-08 01:16:31,431 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:31,432 INFO L399 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:31,432 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:31,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2066077125, now seen corresponding path program 23 times [2019-09-08 01:16:31,432 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:31,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:31,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:31,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:31,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:32,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:32,036 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:16:32,055 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:32,465 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-09-08 01:16:32,465 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:32,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 34 conjunts are in the unsatisfiable core [2019-09-08 01:16:32,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:32,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:32,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2019-09-08 01:16:32,533 INFO L454 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-09-08 01:16:32,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-09-08 01:16:32,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-09-08 01:16:32,535 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand 35 states. [2019-09-08 01:16:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:32,694 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2019-09-08 01:16:32,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-08 01:16:32,695 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 164 [2019-09-08 01:16:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:32,696 INFO L225 Difference]: With dead ends: 181 [2019-09-08 01:16:32,696 INFO L226 Difference]: Without dead ends: 174 [2019-09-08 01:16:32,697 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-09-08 01:16:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-09-08 01:16:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2019-09-08 01:16:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2019-09-08 01:16:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2019-09-08 01:16:32,701 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 164 [2019-09-08 01:16:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:32,702 INFO L475 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2019-09-08 01:16:32,702 INFO L476 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-09-08 01:16:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2019-09-08 01:16:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-09-08 01:16:32,703 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:32,703 INFO L399 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:32,703 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:32,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:32,704 INFO L82 PathProgramCache]: Analyzing trace with hash -312998425, now seen corresponding path program 24 times [2019-09-08 01:16:32,704 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:32,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:32,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:32,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:32,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:33,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:33,338 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:33,350 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:16:33,688 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-09-08 01:16:33,688 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:33,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 35 conjunts are in the unsatisfiable core [2019-09-08 01:16:33,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (25)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:33,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:33,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2019-09-08 01:16:33,740 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-08 01:16:33,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-08 01:16:33,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-09-08 01:16:33,741 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 36 states. [2019-09-08 01:16:33,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:33,914 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2019-09-08 01:16:33,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 01:16:33,914 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 169 [2019-09-08 01:16:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:33,915 INFO L225 Difference]: With dead ends: 186 [2019-09-08 01:16:33,916 INFO L226 Difference]: Without dead ends: 179 [2019-09-08 01:16:33,916 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-09-08 01:16:33,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-09-08 01:16:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2019-09-08 01:16:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2019-09-08 01:16:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2019-09-08 01:16:33,921 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 169 [2019-09-08 01:16:33,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:33,922 INFO L475 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2019-09-08 01:16:33,922 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-08 01:16:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2019-09-08 01:16:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-09-08 01:16:33,923 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:33,923 INFO L399 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:33,923 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:33,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash 634164667, now seen corresponding path program 25 times [2019-09-08 01:16:33,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:33,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:33,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:33,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:33,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:34,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:34,497 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:34,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:34,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 1883 conjuncts, 36 conjunts are in the unsatisfiable core [2019-09-08 01:16:34,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:34,838 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:34,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2019-09-08 01:16:34,838 INFO L454 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-09-08 01:16:34,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-09-08 01:16:34,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-09-08 01:16:34,839 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand 37 states. [2019-09-08 01:16:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:35,067 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions. [2019-09-08 01:16:35,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-08 01:16:35,067 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 174 [2019-09-08 01:16:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:35,069 INFO L225 Difference]: With dead ends: 191 [2019-09-08 01:16:35,069 INFO L226 Difference]: Without dead ends: 184 [2019-09-08 01:16:35,070 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-09-08 01:16:35,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-09-08 01:16:35,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2019-09-08 01:16:35,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2019-09-08 01:16:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2019-09-08 01:16:35,077 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 174 [2019-09-08 01:16:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:35,078 INFO L475 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2019-09-08 01:16:35,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-09-08 01:16:35,078 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2019-09-08 01:16:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-09-08 01:16:35,079 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:35,081 INFO L399 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:35,081 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:35,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2070099353, now seen corresponding path program 26 times [2019-09-08 01:16:35,082 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:35,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:35,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:35,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:35,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:35,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:35,768 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:35,782 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:16:36,029 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:16:36,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:36,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 37 conjunts are in the unsatisfiable core [2019-09-08 01:16:36,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:36,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:36,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2019-09-08 01:16:36,085 INFO L454 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-09-08 01:16:36,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-09-08 01:16:36,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 01:16:36,086 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand 38 states. [2019-09-08 01:16:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:36,283 INFO L93 Difference]: Finished difference Result 196 states and 198 transitions. [2019-09-08 01:16:36,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-09-08 01:16:36,283 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 179 [2019-09-08 01:16:36,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:36,285 INFO L225 Difference]: With dead ends: 196 [2019-09-08 01:16:36,285 INFO L226 Difference]: Without dead ends: 189 [2019-09-08 01:16:36,286 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 01:16:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-09-08 01:16:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2019-09-08 01:16:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2019-09-08 01:16:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2019-09-08 01:16:36,291 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 179 [2019-09-08 01:16:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:36,292 INFO L475 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2019-09-08 01:16:36,292 INFO L476 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-09-08 01:16:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2019-09-08 01:16:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-08 01:16:36,293 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:36,293 INFO L399 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:36,294 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:36,294 INFO L82 PathProgramCache]: Analyzing trace with hash -917593797, now seen corresponding path program 27 times [2019-09-08 01:16:36,294 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:36,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:36,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:36,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:36,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:36,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:36,949 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:36,963 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:16:37,316 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-09-08 01:16:37,317 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:37,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 38 conjunts are in the unsatisfiable core [2019-09-08 01:16:37,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:37,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:37,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2019-09-08 01:16:37,363 INFO L454 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-09-08 01:16:37,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-09-08 01:16:37,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-09-08 01:16:37,364 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 39 states. [2019-09-08 01:16:37,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:37,579 INFO L93 Difference]: Finished difference Result 201 states and 203 transitions. [2019-09-08 01:16:37,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-09-08 01:16:37,580 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 184 [2019-09-08 01:16:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:37,581 INFO L225 Difference]: With dead ends: 201 [2019-09-08 01:16:37,581 INFO L226 Difference]: Without dead ends: 194 [2019-09-08 01:16:37,582 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-09-08 01:16:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-09-08 01:16:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2019-09-08 01:16:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2019-09-08 01:16:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2019-09-08 01:16:37,587 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 184 [2019-09-08 01:16:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:37,588 INFO L475 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2019-09-08 01:16:37,588 INFO L476 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-09-08 01:16:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2019-09-08 01:16:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-09-08 01:16:37,589 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:37,589 INFO L399 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:37,589 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:37,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:37,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1645604583, now seen corresponding path program 28 times [2019-09-08 01:16:37,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:37,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:37,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:37,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:37,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:38,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:38,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:38,264 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:16:38,549 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:16:38,550 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:38,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-08 01:16:38,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:38,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:38,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2019-09-08 01:16:38,632 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-08 01:16:38,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-08 01:16:38,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-09-08 01:16:38,633 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 40 states. [2019-09-08 01:16:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:38,833 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2019-09-08 01:16:38,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-08 01:16:38,833 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 189 [2019-09-08 01:16:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:38,834 INFO L225 Difference]: With dead ends: 206 [2019-09-08 01:16:38,835 INFO L226 Difference]: Without dead ends: 199 [2019-09-08 01:16:38,836 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2019-09-08 01:16:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-09-08 01:16:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2019-09-08 01:16:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2019-09-08 01:16:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2019-09-08 01:16:38,842 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 189 [2019-09-08 01:16:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:38,842 INFO L475 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2019-09-08 01:16:38,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-09-08 01:16:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2019-09-08 01:16:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-09-08 01:16:38,843 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:38,844 INFO L399 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:38,844 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:38,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:38,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1202172741, now seen corresponding path program 29 times [2019-09-08 01:16:38,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:38,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:38,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:38,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:38,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:39,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:39,584 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:39,594 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:16:39,940 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-09-08 01:16:39,941 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:39,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 2051 conjuncts, 40 conjunts are in the unsatisfiable core [2019-09-08 01:16:39,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:40,001 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:40,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2019-09-08 01:16:40,002 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-08 01:16:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-08 01:16:40,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-09-08 01:16:40,004 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand 41 states. [2019-09-08 01:16:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:40,163 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2019-09-08 01:16:40,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-09-08 01:16:40,163 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 194 [2019-09-08 01:16:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:40,164 INFO L225 Difference]: With dead ends: 211 [2019-09-08 01:16:40,164 INFO L226 Difference]: Without dead ends: 204 [2019-09-08 01:16:40,167 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2019-09-08 01:16:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-09-08 01:16:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2019-09-08 01:16:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2019-09-08 01:16:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2019-09-08 01:16:40,175 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 194 [2019-09-08 01:16:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:40,176 INFO L475 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2019-09-08 01:16:40,176 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-08 01:16:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2019-09-08 01:16:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-09-08 01:16:40,177 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:40,178 INFO L399 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:40,178 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:40,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:40,178 INFO L82 PathProgramCache]: Analyzing trace with hash 399209319, now seen corresponding path program 30 times [2019-09-08 01:16:40,178 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:40,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:40,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:40,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:40,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:40,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:40,950 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:40,962 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:16:41,347 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-09-08 01:16:41,348 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:41,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 41 conjunts are in the unsatisfiable core [2019-09-08 01:16:41,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:41,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:41,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2019-09-08 01:16:41,401 INFO L454 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-09-08 01:16:41,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-09-08 01:16:41,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-09-08 01:16:41,402 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand 42 states. [2019-09-08 01:16:41,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:41,609 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2019-09-08 01:16:41,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-09-08 01:16:41,609 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 199 [2019-09-08 01:16:41,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:41,611 INFO L225 Difference]: With dead ends: 216 [2019-09-08 01:16:41,611 INFO L226 Difference]: Without dead ends: 209 [2019-09-08 01:16:41,612 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2019-09-08 01:16:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-09-08 01:16:41,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2019-09-08 01:16:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-09-08 01:16:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 207 transitions. [2019-09-08 01:16:41,617 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 207 transitions. Word has length 199 [2019-09-08 01:16:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:41,618 INFO L475 AbstractCegarLoop]: Abstraction has 206 states and 207 transitions. [2019-09-08 01:16:41,618 INFO L476 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-09-08 01:16:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 207 transitions. [2019-09-08 01:16:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-09-08 01:16:41,619 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:41,619 INFO L399 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:41,619 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1709283387, now seen corresponding path program 31 times [2019-09-08 01:16:41,620 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:41,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:41,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:41,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:41,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:42,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:42,356 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:42,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:42,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 2135 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-08 01:16:42,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:42,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:42,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2019-09-08 01:16:42,773 INFO L454 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-09-08 01:16:42,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-09-08 01:16:42,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-09-08 01:16:42,774 INFO L87 Difference]: Start difference. First operand 206 states and 207 transitions. Second operand 43 states. [2019-09-08 01:16:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:42,953 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2019-09-08 01:16:42,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-09-08 01:16:42,953 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 204 [2019-09-08 01:16:42,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:42,955 INFO L225 Difference]: With dead ends: 221 [2019-09-08 01:16:42,955 INFO L226 Difference]: Without dead ends: 214 [2019-09-08 01:16:42,956 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2019-09-08 01:16:42,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-09-08 01:16:42,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2019-09-08 01:16:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-09-08 01:16:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2019-09-08 01:16:42,962 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 204 [2019-09-08 01:16:42,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:42,963 INFO L475 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2019-09-08 01:16:42,963 INFO L476 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-09-08 01:16:42,963 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2019-09-08 01:16:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-09-08 01:16:42,964 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:42,964 INFO L399 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:42,965 INFO L418 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:42,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1304778727, now seen corresponding path program 32 times [2019-09-08 01:16:42,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:42,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:42,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:42,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:42,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:43,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:43,735 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:43,744 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:16:44,040 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:16:44,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:44,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 43 conjunts are in the unsatisfiable core [2019-09-08 01:16:44,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:44,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:44,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2019-09-08 01:16:44,102 INFO L454 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-09-08 01:16:44,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-09-08 01:16:44,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 01:16:44,103 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 44 states. [2019-09-08 01:16:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:44,323 INFO L93 Difference]: Finished difference Result 226 states and 228 transitions. [2019-09-08 01:16:44,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-09-08 01:16:44,324 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 209 [2019-09-08 01:16:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:44,325 INFO L225 Difference]: With dead ends: 226 [2019-09-08 01:16:44,325 INFO L226 Difference]: Without dead ends: 219 [2019-09-08 01:16:44,327 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 01:16:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2019-09-08 01:16:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 216. [2019-09-08 01:16:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-09-08 01:16:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2019-09-08 01:16:44,332 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 209 [2019-09-08 01:16:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:44,333 INFO L475 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2019-09-08 01:16:44,333 INFO L476 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-09-08 01:16:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2019-09-08 01:16:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-09-08 01:16:44,334 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:44,334 INFO L399 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:44,335 INFO L418 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:44,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:44,335 INFO L82 PathProgramCache]: Analyzing trace with hash -287145029, now seen corresponding path program 33 times [2019-09-08 01:16:44,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:44,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:44,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:44,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:44,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:45,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:45,161 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:45,172 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:16:45,598 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2019-09-08 01:16:45,598 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:45,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 44 conjunts are in the unsatisfiable core [2019-09-08 01:16:45,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (34)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:45,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:45,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2019-09-08 01:16:45,666 INFO L454 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-09-08 01:16:45,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-09-08 01:16:45,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-09-08 01:16:45,668 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand 45 states. [2019-09-08 01:16:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:45,958 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2019-09-08 01:16:45,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-08 01:16:45,959 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 214 [2019-09-08 01:16:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:45,961 INFO L225 Difference]: With dead ends: 231 [2019-09-08 01:16:45,961 INFO L226 Difference]: Without dead ends: 224 [2019-09-08 01:16:45,963 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2019-09-08 01:16:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2019-09-08 01:16:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2019-09-08 01:16:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-09-08 01:16:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2019-09-08 01:16:45,971 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 214 [2019-09-08 01:16:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:45,971 INFO L475 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2019-09-08 01:16:45,971 INFO L476 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-09-08 01:16:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2019-09-08 01:16:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-09-08 01:16:45,974 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:45,974 INFO L399 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:45,974 INFO L418 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:45,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1108057191, now seen corresponding path program 34 times [2019-09-08 01:16:45,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:45,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:45,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:45,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:45,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:47,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:47,008 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:47,017 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:16:47,334 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:16:47,334 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:47,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 45 conjunts are in the unsatisfiable core [2019-09-08 01:16:47,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:47,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:47,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2019-09-08 01:16:47,397 INFO L454 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-09-08 01:16:47,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-09-08 01:16:47,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2019-09-08 01:16:47,398 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand 46 states. [2019-09-08 01:16:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:47,572 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2019-09-08 01:16:47,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-08 01:16:47,573 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 219 [2019-09-08 01:16:47,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:47,575 INFO L225 Difference]: With dead ends: 236 [2019-09-08 01:16:47,575 INFO L226 Difference]: Without dead ends: 229 [2019-09-08 01:16:47,576 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2019-09-08 01:16:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2019-09-08 01:16:47,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2019-09-08 01:16:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2019-09-08 01:16:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 227 transitions. [2019-09-08 01:16:47,582 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 227 transitions. Word has length 219 [2019-09-08 01:16:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:47,583 INFO L475 AbstractCegarLoop]: Abstraction has 226 states and 227 transitions. [2019-09-08 01:16:47,583 INFO L476 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-09-08 01:16:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 227 transitions. [2019-09-08 01:16:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-09-08 01:16:47,584 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:47,584 INFO L399 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:47,585 INFO L418 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:47,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:47,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1705832645, now seen corresponding path program 35 times [2019-09-08 01:16:47,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:47,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:47,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:47,586 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:47,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:48,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:48,602 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:48,612 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:16:48,974 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2019-09-08 01:16:48,974 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:48,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 46 conjunts are in the unsatisfiable core [2019-09-08 01:16:48,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:49,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:49,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2019-09-08 01:16:49,029 INFO L454 AbstractCegarLoop]: Interpolant automaton has 47 states [2019-09-08 01:16:49,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2019-09-08 01:16:49,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2019-09-08 01:16:49,030 INFO L87 Difference]: Start difference. First operand 226 states and 227 transitions. Second operand 47 states. [2019-09-08 01:16:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:49,285 INFO L93 Difference]: Finished difference Result 241 states and 243 transitions. [2019-09-08 01:16:49,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-09-08 01:16:49,286 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 224 [2019-09-08 01:16:49,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:49,287 INFO L225 Difference]: With dead ends: 241 [2019-09-08 01:16:49,288 INFO L226 Difference]: Without dead ends: 234 [2019-09-08 01:16:49,288 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2019-09-08 01:16:49,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2019-09-08 01:16:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 231. [2019-09-08 01:16:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-09-08 01:16:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2019-09-08 01:16:49,294 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 224 [2019-09-08 01:16:49,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:49,294 INFO L475 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2019-09-08 01:16:49,295 INFO L476 AbstractCegarLoop]: Interpolant automaton has 47 states. [2019-09-08 01:16:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2019-09-08 01:16:49,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-09-08 01:16:49,296 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:49,296 INFO L399 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:49,297 INFO L418 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:49,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1218855143, now seen corresponding path program 36 times [2019-09-08 01:16:49,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:49,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:49,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:49,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:49,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:50,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:50,227 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:50,240 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:16:50,699 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2019-09-08 01:16:50,699 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:50,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 47 conjunts are in the unsatisfiable core [2019-09-08 01:16:50,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:50,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:50,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2019-09-08 01:16:50,778 INFO L454 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-09-08 01:16:50,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-09-08 01:16:50,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2019-09-08 01:16:50,779 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 48 states. [2019-09-08 01:16:51,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:51,010 INFO L93 Difference]: Finished difference Result 246 states and 248 transitions. [2019-09-08 01:16:51,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-09-08 01:16:51,011 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 229 [2019-09-08 01:16:51,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:51,012 INFO L225 Difference]: With dead ends: 246 [2019-09-08 01:16:51,012 INFO L226 Difference]: Without dead ends: 239 [2019-09-08 01:16:51,013 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2019-09-08 01:16:51,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-09-08 01:16:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2019-09-08 01:16:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-09-08 01:16:51,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2019-09-08 01:16:51,017 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 229 [2019-09-08 01:16:51,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:51,018 INFO L475 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2019-09-08 01:16:51,018 INFO L476 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-09-08 01:16:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2019-09-08 01:16:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-09-08 01:16:51,019 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:51,019 INFO L399 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:51,020 INFO L418 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:51,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1496005307, now seen corresponding path program 37 times [2019-09-08 01:16:51,020 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:51,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:51,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:51,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:51,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:52,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:52,626 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:52,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:52,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 2387 conjuncts, 48 conjunts are in the unsatisfiable core [2019-09-08 01:16:52,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (38)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:16:53,042 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:53,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2019-09-08 01:16:53,043 INFO L454 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-09-08 01:16:53,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-09-08 01:16:53,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 01:16:53,044 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand 49 states. [2019-09-08 01:16:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:53,249 INFO L93 Difference]: Finished difference Result 251 states and 253 transitions. [2019-09-08 01:16:53,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-08 01:16:53,251 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 234 [2019-09-08 01:16:53,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:53,253 INFO L225 Difference]: With dead ends: 251 [2019-09-08 01:16:53,253 INFO L226 Difference]: Without dead ends: 244 [2019-09-08 01:16:53,253 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 01:16:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-09-08 01:16:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 241. [2019-09-08 01:16:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2019-09-08 01:16:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2019-09-08 01:16:53,258 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 234 [2019-09-08 01:16:53,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:53,258 INFO L475 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2019-09-08 01:16:53,258 INFO L476 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-09-08 01:16:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2019-09-08 01:16:53,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-09-08 01:16:53,260 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:53,260 INFO L399 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:53,260 INFO L418 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:53,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:53,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1268598119, now seen corresponding path program 38 times [2019-09-08 01:16:53,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:53,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:53,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:53,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:16:53,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:54,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:54,242 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:54,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:16:54,562 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:16:54,562 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:54,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 2429 conjuncts, 49 conjunts are in the unsatisfiable core [2019-09-08 01:16:54,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:54,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:54,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2019-09-08 01:16:54,622 INFO L454 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-09-08 01:16:54,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-09-08 01:16:54,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2019-09-08 01:16:54,623 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 50 states. [2019-09-08 01:16:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:54,871 INFO L93 Difference]: Finished difference Result 256 states and 258 transitions. [2019-09-08 01:16:54,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-08 01:16:54,871 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 239 [2019-09-08 01:16:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:54,873 INFO L225 Difference]: With dead ends: 256 [2019-09-08 01:16:54,873 INFO L226 Difference]: Without dead ends: 249 [2019-09-08 01:16:54,874 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2019-09-08 01:16:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2019-09-08 01:16:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 246. [2019-09-08 01:16:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-09-08 01:16:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 247 transitions. [2019-09-08 01:16:54,879 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 247 transitions. Word has length 239 [2019-09-08 01:16:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:54,880 INFO L475 AbstractCegarLoop]: Abstraction has 246 states and 247 transitions. [2019-09-08 01:16:54,880 INFO L476 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-09-08 01:16:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 247 transitions. [2019-09-08 01:16:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-09-08 01:16:54,881 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:54,881 INFO L399 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:54,882 INFO L418 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:54,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1180894779, now seen corresponding path program 39 times [2019-09-08 01:16:54,882 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:54,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:54,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:54,883 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:54,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:55,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:55,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:16:55,902 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:56,396 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2019-09-08 01:16:56,396 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:56,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 50 conjunts are in the unsatisfiable core [2019-09-08 01:16:56,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:56,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:56,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2019-09-08 01:16:56,548 INFO L454 AbstractCegarLoop]: Interpolant automaton has 51 states [2019-09-08 01:16:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2019-09-08 01:16:56,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2019-09-08 01:16:56,549 INFO L87 Difference]: Start difference. First operand 246 states and 247 transitions. Second operand 51 states. [2019-09-08 01:16:56,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:56,813 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2019-09-08 01:16:56,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-08 01:16:56,815 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 244 [2019-09-08 01:16:56,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:56,816 INFO L225 Difference]: With dead ends: 261 [2019-09-08 01:16:56,816 INFO L226 Difference]: Without dead ends: 254 [2019-09-08 01:16:56,816 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2019-09-08 01:16:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-09-08 01:16:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 251. [2019-09-08 01:16:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2019-09-08 01:16:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2019-09-08 01:16:56,821 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 244 [2019-09-08 01:16:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:56,821 INFO L475 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2019-09-08 01:16:56,821 INFO L476 AbstractCegarLoop]: Interpolant automaton has 51 states. [2019-09-08 01:16:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2019-09-08 01:16:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-09-08 01:16:56,823 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:56,823 INFO L399 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:56,823 INFO L418 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:56,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1257810407, now seen corresponding path program 40 times [2019-09-08 01:16:56,824 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:56,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:56,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:56,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:56,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:57,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:57,977 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:16:58,015 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:58,354 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:16:58,355 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:16:58,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 51 conjunts are in the unsatisfiable core [2019-09-08 01:16:58,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:16:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:58,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:16:58,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2019-09-08 01:16:58,430 INFO L454 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-09-08 01:16:58,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-09-08 01:16:58,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2019-09-08 01:16:58,431 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 52 states. [2019-09-08 01:16:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:16:58,679 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2019-09-08 01:16:58,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-09-08 01:16:58,679 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 249 [2019-09-08 01:16:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:16:58,680 INFO L225 Difference]: With dead ends: 266 [2019-09-08 01:16:58,680 INFO L226 Difference]: Without dead ends: 259 [2019-09-08 01:16:58,681 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2019-09-08 01:16:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-09-08 01:16:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 256. [2019-09-08 01:16:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2019-09-08 01:16:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2019-09-08 01:16:58,687 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 249 [2019-09-08 01:16:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:16:58,687 INFO L475 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2019-09-08 01:16:58,687 INFO L476 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-09-08 01:16:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2019-09-08 01:16:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-09-08 01:16:58,689 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:16:58,689 INFO L399 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:16:58,689 INFO L418 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:16:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:16:58,689 INFO L82 PathProgramCache]: Analyzing trace with hash 653423035, now seen corresponding path program 41 times [2019-09-08 01:16:58,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:16:58,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:16:58,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:58,690 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:16:58,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:16:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:16:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:16:59,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:16:59,799 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:16:59,810 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:17:00,275 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2019-09-08 01:17:00,275 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:00,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 52 conjunts are in the unsatisfiable core [2019-09-08 01:17:00,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:00,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:00,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2019-09-08 01:17:00,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 53 states [2019-09-08 01:17:00,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2019-09-08 01:17:00,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2019-09-08 01:17:00,371 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand 53 states. [2019-09-08 01:17:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:00,611 INFO L93 Difference]: Finished difference Result 271 states and 273 transitions. [2019-09-08 01:17:00,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-09-08 01:17:00,613 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 254 [2019-09-08 01:17:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:00,614 INFO L225 Difference]: With dead ends: 271 [2019-09-08 01:17:00,614 INFO L226 Difference]: Without dead ends: 264 [2019-09-08 01:17:00,614 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2019-09-08 01:17:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-09-08 01:17:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 261. [2019-09-08 01:17:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2019-09-08 01:17:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2019-09-08 01:17:00,620 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 254 [2019-09-08 01:17:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:00,620 INFO L475 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2019-09-08 01:17:00,620 INFO L476 AbstractCegarLoop]: Interpolant automaton has 53 states. [2019-09-08 01:17:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2019-09-08 01:17:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2019-09-08 01:17:00,622 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:00,622 INFO L399 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:00,623 INFO L418 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:00,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:00,623 INFO L82 PathProgramCache]: Analyzing trace with hash -591368601, now seen corresponding path program 42 times [2019-09-08 01:17:00,623 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:00,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:00,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:00,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:00,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:01,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:01,834 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:01,846 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:17:02,391 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2019-09-08 01:17:02,392 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:02,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 53 conjunts are in the unsatisfiable core [2019-09-08 01:17:02,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:02,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:02,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2019-09-08 01:17:02,496 INFO L454 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-09-08 01:17:02,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-09-08 01:17:02,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2019-09-08 01:17:02,497 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand 54 states. [2019-09-08 01:17:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:02,732 INFO L93 Difference]: Finished difference Result 276 states and 278 transitions. [2019-09-08 01:17:02,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-09-08 01:17:02,733 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 259 [2019-09-08 01:17:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:02,734 INFO L225 Difference]: With dead ends: 276 [2019-09-08 01:17:02,734 INFO L226 Difference]: Without dead ends: 269 [2019-09-08 01:17:02,735 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2019-09-08 01:17:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-09-08 01:17:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 266. [2019-09-08 01:17:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-09-08 01:17:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 267 transitions. [2019-09-08 01:17:02,740 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 267 transitions. Word has length 259 [2019-09-08 01:17:02,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:02,740 INFO L475 AbstractCegarLoop]: Abstraction has 266 states and 267 transitions. [2019-09-08 01:17:02,741 INFO L476 AbstractCegarLoop]: Interpolant automaton has 54 states. [2019-09-08 01:17:02,741 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 267 transitions. [2019-09-08 01:17:02,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2019-09-08 01:17:02,742 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:02,742 INFO L399 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:02,743 INFO L418 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:02,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:02,743 INFO L82 PathProgramCache]: Analyzing trace with hash -372146885, now seen corresponding path program 43 times [2019-09-08 01:17:02,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:02,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:02,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:02,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:02,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:03,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:03,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:03,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:17:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:04,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 54 conjunts are in the unsatisfiable core [2019-09-08 01:17:04,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:04,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:04,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2019-09-08 01:17:04,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 55 states [2019-09-08 01:17:04,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2019-09-08 01:17:04,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2019-09-08 01:17:04,378 INFO L87 Difference]: Start difference. First operand 266 states and 267 transitions. Second operand 55 states. [2019-09-08 01:17:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:04,701 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2019-09-08 01:17:04,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-09-08 01:17:04,701 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 264 [2019-09-08 01:17:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:04,703 INFO L225 Difference]: With dead ends: 281 [2019-09-08 01:17:04,703 INFO L226 Difference]: Without dead ends: 274 [2019-09-08 01:17:04,703 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2019-09-08 01:17:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2019-09-08 01:17:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2019-09-08 01:17:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2019-09-08 01:17:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2019-09-08 01:17:04,708 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 264 [2019-09-08 01:17:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:04,708 INFO L475 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2019-09-08 01:17:04,708 INFO L476 AbstractCegarLoop]: Interpolant automaton has 55 states. [2019-09-08 01:17:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2019-09-08 01:17:04,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2019-09-08 01:17:04,710 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:04,710 INFO L399 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:04,711 INFO L418 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:04,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1392733465, now seen corresponding path program 44 times [2019-09-08 01:17:04,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:04,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:04,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:04,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:17:04,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:06,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:06,020 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:06,030 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:17:06,398 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:17:06,398 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:06,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 55 conjunts are in the unsatisfiable core [2019-09-08 01:17:06,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (45)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:17:06,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:06,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2019-09-08 01:17:06,530 INFO L454 AbstractCegarLoop]: Interpolant automaton has 56 states [2019-09-08 01:17:06,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2019-09-08 01:17:06,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2019-09-08 01:17:06,531 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 56 states. [2019-09-08 01:17:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:06,779 INFO L93 Difference]: Finished difference Result 286 states and 288 transitions. [2019-09-08 01:17:06,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2019-09-08 01:17:06,780 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 269 [2019-09-08 01:17:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:06,782 INFO L225 Difference]: With dead ends: 286 [2019-09-08 01:17:06,782 INFO L226 Difference]: Without dead ends: 279 [2019-09-08 01:17:06,782 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2019-09-08 01:17:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-09-08 01:17:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 276. [2019-09-08 01:17:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2019-09-08 01:17:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 277 transitions. [2019-09-08 01:17:06,791 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 277 transitions. Word has length 269 [2019-09-08 01:17:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:06,792 INFO L475 AbstractCegarLoop]: Abstraction has 276 states and 277 transitions. [2019-09-08 01:17:06,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 56 states. [2019-09-08 01:17:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 277 transitions. [2019-09-08 01:17:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-09-08 01:17:06,794 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:06,794 INFO L399 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:06,795 INFO L418 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:06,795 INFO L82 PathProgramCache]: Analyzing trace with hash 670574779, now seen corresponding path program 45 times [2019-09-08 01:17:06,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:06,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:06,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:06,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:06,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:08,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:08,093 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:08,105 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:17:08,706 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2019-09-08 01:17:08,706 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:08,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 56 conjunts are in the unsatisfiable core [2019-09-08 01:17:08,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:08,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:08,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2019-09-08 01:17:08,784 INFO L454 AbstractCegarLoop]: Interpolant automaton has 57 states [2019-09-08 01:17:08,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2019-09-08 01:17:08,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2019-09-08 01:17:08,786 INFO L87 Difference]: Start difference. First operand 276 states and 277 transitions. Second operand 57 states. [2019-09-08 01:17:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:09,032 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2019-09-08 01:17:09,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-09-08 01:17:09,033 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 274 [2019-09-08 01:17:09,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:09,035 INFO L225 Difference]: With dead ends: 291 [2019-09-08 01:17:09,035 INFO L226 Difference]: Without dead ends: 284 [2019-09-08 01:17:09,036 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2019-09-08 01:17:09,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2019-09-08 01:17:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 281. [2019-09-08 01:17:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2019-09-08 01:17:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2019-09-08 01:17:09,041 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 274 [2019-09-08 01:17:09,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:09,041 INFO L475 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2019-09-08 01:17:09,041 INFO L476 AbstractCegarLoop]: Interpolant automaton has 57 states. [2019-09-08 01:17:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2019-09-08 01:17:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2019-09-08 01:17:09,043 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:09,043 INFO L399 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:09,043 INFO L418 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:09,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:09,044 INFO L82 PathProgramCache]: Analyzing trace with hash -38463641, now seen corresponding path program 46 times [2019-09-08 01:17:09,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:09,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:09,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:09,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:09,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:10,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:10,348 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:10,360 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:17:10,734 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:17:10,735 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:10,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 57 conjunts are in the unsatisfiable core [2019-09-08 01:17:10,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:10,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:10,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2019-09-08 01:17:10,826 INFO L454 AbstractCegarLoop]: Interpolant automaton has 58 states [2019-09-08 01:17:10,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2019-09-08 01:17:10,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2019-09-08 01:17:10,827 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand 58 states. [2019-09-08 01:17:11,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:11,118 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2019-09-08 01:17:11,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-09-08 01:17:11,118 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 279 [2019-09-08 01:17:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:11,120 INFO L225 Difference]: With dead ends: 296 [2019-09-08 01:17:11,120 INFO L226 Difference]: Without dead ends: 289 [2019-09-08 01:17:11,121 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2019-09-08 01:17:11,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2019-09-08 01:17:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2019-09-08 01:17:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2019-09-08 01:17:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 287 transitions. [2019-09-08 01:17:11,127 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 287 transitions. Word has length 279 [2019-09-08 01:17:11,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:11,127 INFO L475 AbstractCegarLoop]: Abstraction has 286 states and 287 transitions. [2019-09-08 01:17:11,128 INFO L476 AbstractCegarLoop]: Interpolant automaton has 58 states. [2019-09-08 01:17:11,128 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 287 transitions. [2019-09-08 01:17:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-09-08 01:17:11,129 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:11,129 INFO L399 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:11,130 INFO L418 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:11,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:11,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1537313733, now seen corresponding path program 47 times [2019-09-08 01:17:11,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:11,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:11,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:11,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:11,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:12,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:12,520 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:12,530 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:17:13,018 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2019-09-08 01:17:13,018 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:13,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 2807 conjuncts, 58 conjunts are in the unsatisfiable core [2019-09-08 01:17:13,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:13,093 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:13,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2019-09-08 01:17:13,094 INFO L454 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-09-08 01:17:13,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-09-08 01:17:13,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2019-09-08 01:17:13,095 INFO L87 Difference]: Start difference. First operand 286 states and 287 transitions. Second operand 59 states. [2019-09-08 01:17:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:13,392 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2019-09-08 01:17:13,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-09-08 01:17:13,393 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 284 [2019-09-08 01:17:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:13,394 INFO L225 Difference]: With dead ends: 301 [2019-09-08 01:17:13,395 INFO L226 Difference]: Without dead ends: 294 [2019-09-08 01:17:13,395 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2019-09-08 01:17:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-09-08 01:17:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 291. [2019-09-08 01:17:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2019-09-08 01:17:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2019-09-08 01:17:13,400 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 284 [2019-09-08 01:17:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:13,401 INFO L475 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2019-09-08 01:17:13,401 INFO L476 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-09-08 01:17:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2019-09-08 01:17:13,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-09-08 01:17:13,402 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:13,402 INFO L399 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:13,403 INFO L418 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:13,403 INFO L82 PathProgramCache]: Analyzing trace with hash 653392871, now seen corresponding path program 48 times [2019-09-08 01:17:13,403 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:13,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:13,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:13,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:13,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:14,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:14,772 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:14,785 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:17:15,417 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2019-09-08 01:17:15,418 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:15,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 59 conjunts are in the unsatisfiable core [2019-09-08 01:17:15,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:15,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:15,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2019-09-08 01:17:15,523 INFO L454 AbstractCegarLoop]: Interpolant automaton has 60 states [2019-09-08 01:17:15,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2019-09-08 01:17:15,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2019-09-08 01:17:15,525 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 60 states. [2019-09-08 01:17:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:15,830 INFO L93 Difference]: Finished difference Result 306 states and 308 transitions. [2019-09-08 01:17:15,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-09-08 01:17:15,830 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 289 [2019-09-08 01:17:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:15,832 INFO L225 Difference]: With dead ends: 306 [2019-09-08 01:17:15,832 INFO L226 Difference]: Without dead ends: 299 [2019-09-08 01:17:15,832 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2019-09-08 01:17:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2019-09-08 01:17:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2019-09-08 01:17:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-09-08 01:17:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2019-09-08 01:17:15,837 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 289 [2019-09-08 01:17:15,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:15,838 INFO L475 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2019-09-08 01:17:15,838 INFO L476 AbstractCegarLoop]: Interpolant automaton has 60 states. [2019-09-08 01:17:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2019-09-08 01:17:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-09-08 01:17:15,840 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:15,840 INFO L399 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:15,840 INFO L418 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash -872652869, now seen corresponding path program 49 times [2019-09-08 01:17:15,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:15,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:15,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:15,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:15,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:17,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:17,218 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:17,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:17:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:17,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 60 conjunts are in the unsatisfiable core [2019-09-08 01:17:17,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:17,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:17,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2019-09-08 01:17:17,730 INFO L454 AbstractCegarLoop]: Interpolant automaton has 61 states [2019-09-08 01:17:17,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2019-09-08 01:17:17,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2019-09-08 01:17:17,731 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand 61 states. [2019-09-08 01:17:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:18,026 INFO L93 Difference]: Finished difference Result 311 states and 313 transitions. [2019-09-08 01:17:18,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-08 01:17:18,026 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 294 [2019-09-08 01:17:18,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:18,027 INFO L225 Difference]: With dead ends: 311 [2019-09-08 01:17:18,027 INFO L226 Difference]: Without dead ends: 304 [2019-09-08 01:17:18,031 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2019-09-08 01:17:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2019-09-08 01:17:18,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2019-09-08 01:17:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-09-08 01:17:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 302 transitions. [2019-09-08 01:17:18,037 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 302 transitions. Word has length 294 [2019-09-08 01:17:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:18,038 INFO L475 AbstractCegarLoop]: Abstraction has 301 states and 302 transitions. [2019-09-08 01:17:18,038 INFO L476 AbstractCegarLoop]: Interpolant automaton has 61 states. [2019-09-08 01:17:18,038 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 302 transitions. [2019-09-08 01:17:18,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2019-09-08 01:17:18,039 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:18,040 INFO L399 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:18,040 INFO L418 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:18,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:18,040 INFO L82 PathProgramCache]: Analyzing trace with hash 381370471, now seen corresponding path program 50 times [2019-09-08 01:17:18,040 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:18,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:18,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:18,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:17:18,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:19,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:19,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:19,459 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:19,471 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:17:19,867 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:17:19,867 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:19,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 61 conjunts are in the unsatisfiable core [2019-09-08 01:17:19,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:19,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:19,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2019-09-08 01:17:19,982 INFO L454 AbstractCegarLoop]: Interpolant automaton has 62 states [2019-09-08 01:17:19,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2019-09-08 01:17:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2019-09-08 01:17:19,983 INFO L87 Difference]: Start difference. First operand 301 states and 302 transitions. Second operand 62 states. [2019-09-08 01:17:20,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:20,274 INFO L93 Difference]: Finished difference Result 316 states and 318 transitions. [2019-09-08 01:17:20,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-09-08 01:17:20,275 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 299 [2019-09-08 01:17:20,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:20,277 INFO L225 Difference]: With dead ends: 316 [2019-09-08 01:17:20,277 INFO L226 Difference]: Without dead ends: 309 [2019-09-08 01:17:20,278 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2019-09-08 01:17:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2019-09-08 01:17:20,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 306. [2019-09-08 01:17:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2019-09-08 01:17:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 307 transitions. [2019-09-08 01:17:20,285 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 307 transitions. Word has length 299 [2019-09-08 01:17:20,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:20,285 INFO L475 AbstractCegarLoop]: Abstraction has 306 states and 307 transitions. [2019-09-08 01:17:20,285 INFO L476 AbstractCegarLoop]: Interpolant automaton has 62 states. [2019-09-08 01:17:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 307 transitions. [2019-09-08 01:17:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2019-09-08 01:17:20,287 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:20,287 INFO L399 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:20,287 INFO L418 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:20,288 INFO L82 PathProgramCache]: Analyzing trace with hash 902425403, now seen corresponding path program 51 times [2019-09-08 01:17:20,288 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:20,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:20,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:20,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:20,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:21,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:21,797 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:21,809 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:17:22,479 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2019-09-08 01:17:22,479 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:22,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 62 conjunts are in the unsatisfiable core [2019-09-08 01:17:22,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:22,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:22,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2019-09-08 01:17:22,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 63 states [2019-09-08 01:17:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2019-09-08 01:17:22,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2019-09-08 01:17:22,593 INFO L87 Difference]: Start difference. First operand 306 states and 307 transitions. Second operand 63 states. [2019-09-08 01:17:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:22,902 INFO L93 Difference]: Finished difference Result 321 states and 323 transitions. [2019-09-08 01:17:22,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-09-08 01:17:22,903 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 304 [2019-09-08 01:17:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:22,904 INFO L225 Difference]: With dead ends: 321 [2019-09-08 01:17:22,904 INFO L226 Difference]: Without dead ends: 314 [2019-09-08 01:17:22,905 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2019-09-08 01:17:22,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2019-09-08 01:17:22,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311. [2019-09-08 01:17:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2019-09-08 01:17:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2019-09-08 01:17:22,911 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 304 [2019-09-08 01:17:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:22,911 INFO L475 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2019-09-08 01:17:22,911 INFO L476 AbstractCegarLoop]: Interpolant automaton has 63 states. [2019-09-08 01:17:22,911 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2019-09-08 01:17:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-09-08 01:17:22,913 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:22,913 INFO L399 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:22,913 INFO L418 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:22,914 INFO L82 PathProgramCache]: Analyzing trace with hash -786897689, now seen corresponding path program 52 times [2019-09-08 01:17:22,914 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:22,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:22,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:22,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:22,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:24,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:24,408 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:24,419 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:17:24,831 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:17:24,832 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:24,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 3017 conjuncts, 63 conjunts are in the unsatisfiable core [2019-09-08 01:17:24,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:24,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:24,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2019-09-08 01:17:24,918 INFO L454 AbstractCegarLoop]: Interpolant automaton has 64 states [2019-09-08 01:17:24,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2019-09-08 01:17:24,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2019-09-08 01:17:24,919 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 64 states. [2019-09-08 01:17:25,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:25,274 INFO L93 Difference]: Finished difference Result 326 states and 328 transitions. [2019-09-08 01:17:25,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2019-09-08 01:17:25,274 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 309 [2019-09-08 01:17:25,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:25,275 INFO L225 Difference]: With dead ends: 326 [2019-09-08 01:17:25,276 INFO L226 Difference]: Without dead ends: 319 [2019-09-08 01:17:25,276 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2019-09-08 01:17:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2019-09-08 01:17:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2019-09-08 01:17:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2019-09-08 01:17:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 317 transitions. [2019-09-08 01:17:25,280 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 317 transitions. Word has length 309 [2019-09-08 01:17:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:25,280 INFO L475 AbstractCegarLoop]: Abstraction has 316 states and 317 transitions. [2019-09-08 01:17:25,280 INFO L476 AbstractCegarLoop]: Interpolant automaton has 64 states. [2019-09-08 01:17:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 317 transitions. [2019-09-08 01:17:25,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2019-09-08 01:17:25,282 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:25,282 INFO L399 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:25,282 INFO L418 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:25,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:25,282 INFO L82 PathProgramCache]: Analyzing trace with hash 582948539, now seen corresponding path program 53 times [2019-09-08 01:17:25,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:25,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:25,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:25,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:25,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:26,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:26,978 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:26,991 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:17:27,555 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2019-09-08 01:17:27,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:27,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 64 conjunts are in the unsatisfiable core [2019-09-08 01:17:27,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:27,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:27,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2019-09-08 01:17:27,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 65 states [2019-09-08 01:17:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2019-09-08 01:17:27,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2019-09-08 01:17:27,639 INFO L87 Difference]: Start difference. First operand 316 states and 317 transitions. Second operand 65 states. [2019-09-08 01:17:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:27,948 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2019-09-08 01:17:27,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2019-09-08 01:17:27,949 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 314 [2019-09-08 01:17:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:27,951 INFO L225 Difference]: With dead ends: 331 [2019-09-08 01:17:27,951 INFO L226 Difference]: Without dead ends: 324 [2019-09-08 01:17:27,952 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2019-09-08 01:17:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2019-09-08 01:17:27,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 321. [2019-09-08 01:17:27,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2019-09-08 01:17:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2019-09-08 01:17:27,957 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 314 [2019-09-08 01:17:27,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:27,958 INFO L475 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2019-09-08 01:17:27,958 INFO L476 AbstractCegarLoop]: Interpolant automaton has 65 states. [2019-09-08 01:17:27,958 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2019-09-08 01:17:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-09-08 01:17:27,959 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:27,960 INFO L399 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:27,960 INFO L418 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:27,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:27,960 INFO L82 PathProgramCache]: Analyzing trace with hash -267196057, now seen corresponding path program 54 times [2019-09-08 01:17:27,961 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:27,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:27,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:27,961 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:27,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:29,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:29,600 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:29,611 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:17:30,349 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2019-09-08 01:17:30,349 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:30,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 3101 conjuncts, 65 conjunts are in the unsatisfiable core [2019-09-08 01:17:30,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:30,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:30,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2019-09-08 01:17:30,437 INFO L454 AbstractCegarLoop]: Interpolant automaton has 66 states [2019-09-08 01:17:30,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2019-09-08 01:17:30,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2019-09-08 01:17:30,438 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 66 states. [2019-09-08 01:17:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:30,771 INFO L93 Difference]: Finished difference Result 336 states and 338 transitions. [2019-09-08 01:17:30,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-09-08 01:17:30,771 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 319 [2019-09-08 01:17:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:30,773 INFO L225 Difference]: With dead ends: 336 [2019-09-08 01:17:30,773 INFO L226 Difference]: Without dead ends: 329 [2019-09-08 01:17:30,773 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2019-09-08 01:17:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2019-09-08 01:17:30,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2019-09-08 01:17:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2019-09-08 01:17:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 327 transitions. [2019-09-08 01:17:30,779 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 327 transitions. Word has length 319 [2019-09-08 01:17:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:30,779 INFO L475 AbstractCegarLoop]: Abstraction has 326 states and 327 transitions. [2019-09-08 01:17:30,779 INFO L476 AbstractCegarLoop]: Interpolant automaton has 66 states. [2019-09-08 01:17:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 327 transitions. [2019-09-08 01:17:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2019-09-08 01:17:30,781 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:30,781 INFO L399 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:30,781 INFO L418 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:30,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:30,782 INFO L82 PathProgramCache]: Analyzing trace with hash -36445637, now seen corresponding path program 55 times [2019-09-08 01:17:30,782 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:30,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:30,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:30,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:30,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:32,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:32,477 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:32,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:17:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:32,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 66 conjunts are in the unsatisfiable core [2019-09-08 01:17:32,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:33,015 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:33,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2019-09-08 01:17:33,016 INFO L454 AbstractCegarLoop]: Interpolant automaton has 67 states [2019-09-08 01:17:33,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2019-09-08 01:17:33,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2019-09-08 01:17:33,017 INFO L87 Difference]: Start difference. First operand 326 states and 327 transitions. Second operand 67 states. [2019-09-08 01:17:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:33,382 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2019-09-08 01:17:33,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-09-08 01:17:33,382 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 324 [2019-09-08 01:17:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:33,384 INFO L225 Difference]: With dead ends: 341 [2019-09-08 01:17:33,384 INFO L226 Difference]: Without dead ends: 334 [2019-09-08 01:17:33,384 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2019-09-08 01:17:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-09-08 01:17:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2019-09-08 01:17:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2019-09-08 01:17:33,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2019-09-08 01:17:33,388 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 324 [2019-09-08 01:17:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:33,389 INFO L475 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2019-09-08 01:17:33,389 INFO L476 AbstractCegarLoop]: Interpolant automaton has 67 states. [2019-09-08 01:17:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2019-09-08 01:17:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-09-08 01:17:33,390 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:33,390 INFO L399 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:33,391 INFO L418 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:33,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:33,391 INFO L82 PathProgramCache]: Analyzing trace with hash 598822375, now seen corresponding path program 56 times [2019-09-08 01:17:33,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:33,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:33,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:33,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:17:33,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:35,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:35,123 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:35,133 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:17:35,569 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:17:35,570 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:35,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 67 conjunts are in the unsatisfiable core [2019-09-08 01:17:35,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:35,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:35,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2019-09-08 01:17:35,696 INFO L454 AbstractCegarLoop]: Interpolant automaton has 68 states [2019-09-08 01:17:35,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2019-09-08 01:17:35,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2019-09-08 01:17:35,697 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 68 states. [2019-09-08 01:17:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:36,032 INFO L93 Difference]: Finished difference Result 346 states and 348 transitions. [2019-09-08 01:17:36,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2019-09-08 01:17:36,033 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 329 [2019-09-08 01:17:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:36,035 INFO L225 Difference]: With dead ends: 346 [2019-09-08 01:17:36,035 INFO L226 Difference]: Without dead ends: 339 [2019-09-08 01:17:36,035 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2019-09-08 01:17:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2019-09-08 01:17:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 336. [2019-09-08 01:17:36,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-09-08 01:17:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2019-09-08 01:17:36,040 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 329 [2019-09-08 01:17:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:36,040 INFO L475 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2019-09-08 01:17:36,040 INFO L476 AbstractCegarLoop]: Interpolant automaton has 68 states. [2019-09-08 01:17:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2019-09-08 01:17:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2019-09-08 01:17:36,042 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:36,042 INFO L399 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:36,042 INFO L418 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:36,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:36,043 INFO L82 PathProgramCache]: Analyzing trace with hash -603959877, now seen corresponding path program 57 times [2019-09-08 01:17:36,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:36,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:36,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:36,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:36,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:37,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:37,811 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:37,822 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:17:38,585 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2019-09-08 01:17:38,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:38,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 3227 conjuncts, 68 conjunts are in the unsatisfiable core [2019-09-08 01:17:38,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:38,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:38,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2019-09-08 01:17:38,687 INFO L454 AbstractCegarLoop]: Interpolant automaton has 69 states [2019-09-08 01:17:38,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2019-09-08 01:17:38,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2019-09-08 01:17:38,688 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand 69 states. [2019-09-08 01:17:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:39,057 INFO L93 Difference]: Finished difference Result 351 states and 353 transitions. [2019-09-08 01:17:39,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-09-08 01:17:39,057 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 334 [2019-09-08 01:17:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:39,058 INFO L225 Difference]: With dead ends: 351 [2019-09-08 01:17:39,059 INFO L226 Difference]: Without dead ends: 344 [2019-09-08 01:17:39,059 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2019-09-08 01:17:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2019-09-08 01:17:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 341. [2019-09-08 01:17:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2019-09-08 01:17:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2019-09-08 01:17:39,064 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 334 [2019-09-08 01:17:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:39,065 INFO L475 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2019-09-08 01:17:39,065 INFO L476 AbstractCegarLoop]: Interpolant automaton has 69 states. [2019-09-08 01:17:39,065 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2019-09-08 01:17:39,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2019-09-08 01:17:39,067 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:39,067 INFO L399 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:39,067 INFO L418 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:39,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:39,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1308880281, now seen corresponding path program 58 times [2019-09-08 01:17:39,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:39,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:39,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:39,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:39,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:40,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:40,904 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:40,917 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:17:41,359 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:17:41,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:41,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 69 conjunts are in the unsatisfiable core [2019-09-08 01:17:41,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:41,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:41,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2019-09-08 01:17:41,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 70 states [2019-09-08 01:17:41,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2019-09-08 01:17:41,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2019-09-08 01:17:41,450 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand 70 states. [2019-09-08 01:17:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:41,750 INFO L93 Difference]: Finished difference Result 356 states and 358 transitions. [2019-09-08 01:17:41,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-09-08 01:17:41,751 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 339 [2019-09-08 01:17:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:41,753 INFO L225 Difference]: With dead ends: 356 [2019-09-08 01:17:41,753 INFO L226 Difference]: Without dead ends: 349 [2019-09-08 01:17:41,754 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2019-09-08 01:17:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-09-08 01:17:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2019-09-08 01:17:41,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2019-09-08 01:17:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 347 transitions. [2019-09-08 01:17:41,757 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 347 transitions. Word has length 339 [2019-09-08 01:17:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:41,758 INFO L475 AbstractCegarLoop]: Abstraction has 346 states and 347 transitions. [2019-09-08 01:17:41,758 INFO L476 AbstractCegarLoop]: Interpolant automaton has 70 states. [2019-09-08 01:17:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 347 transitions. [2019-09-08 01:17:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2019-09-08 01:17:41,759 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:41,759 INFO L399 BasicCegarLoop]: trace histogram [60, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:41,760 INFO L418 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:41,760 INFO L82 PathProgramCache]: Analyzing trace with hash -63153861, now seen corresponding path program 59 times [2019-09-08 01:17:41,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:41,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:41,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:41,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:41,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:43,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:43,635 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:43,649 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:17:44,298 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2019-09-08 01:17:44,299 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:44,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 3311 conjuncts, 70 conjunts are in the unsatisfiable core [2019-09-08 01:17:44,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:44,392 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:44,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2019-09-08 01:17:44,393 INFO L454 AbstractCegarLoop]: Interpolant automaton has 71 states [2019-09-08 01:17:44,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2019-09-08 01:17:44,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2019-09-08 01:17:44,394 INFO L87 Difference]: Start difference. First operand 346 states and 347 transitions. Second operand 71 states. [2019-09-08 01:17:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:44,710 INFO L93 Difference]: Finished difference Result 361 states and 363 transitions. [2019-09-08 01:17:44,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2019-09-08 01:17:44,710 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 344 [2019-09-08 01:17:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:44,712 INFO L225 Difference]: With dead ends: 361 [2019-09-08 01:17:44,712 INFO L226 Difference]: Without dead ends: 354 [2019-09-08 01:17:44,712 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2019-09-08 01:17:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-09-08 01:17:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 351. [2019-09-08 01:17:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2019-09-08 01:17:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2019-09-08 01:17:44,717 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 344 [2019-09-08 01:17:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:44,718 INFO L475 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2019-09-08 01:17:44,718 INFO L476 AbstractCegarLoop]: Interpolant automaton has 71 states. [2019-09-08 01:17:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2019-09-08 01:17:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2019-09-08 01:17:44,719 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:44,720 INFO L399 BasicCegarLoop]: trace histogram [61, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:44,720 INFO L418 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:44,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:44,720 INFO L82 PathProgramCache]: Analyzing trace with hash -151308569, now seen corresponding path program 60 times [2019-09-08 01:17:44,720 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:44,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:44,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:44,721 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:44,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:46,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:46,555 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:46,566 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:17:47,395 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2019-09-08 01:17:47,395 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:47,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 3353 conjuncts, 71 conjunts are in the unsatisfiable core [2019-09-08 01:17:47,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:47,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:47,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2019-09-08 01:17:47,511 INFO L454 AbstractCegarLoop]: Interpolant automaton has 72 states [2019-09-08 01:17:47,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2019-09-08 01:17:47,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2019-09-08 01:17:47,512 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 72 states. [2019-09-08 01:17:47,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:47,799 INFO L93 Difference]: Finished difference Result 366 states and 368 transitions. [2019-09-08 01:17:47,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-09-08 01:17:47,799 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 349 [2019-09-08 01:17:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:47,801 INFO L225 Difference]: With dead ends: 366 [2019-09-08 01:17:47,801 INFO L226 Difference]: Without dead ends: 359 [2019-09-08 01:17:47,801 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2019-09-08 01:17:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2019-09-08 01:17:47,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 356. [2019-09-08 01:17:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2019-09-08 01:17:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 357 transitions. [2019-09-08 01:17:47,806 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 357 transitions. Word has length 349 [2019-09-08 01:17:47,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:47,807 INFO L475 AbstractCegarLoop]: Abstraction has 356 states and 357 transitions. [2019-09-08 01:17:47,807 INFO L476 AbstractCegarLoop]: Interpolant automaton has 72 states. [2019-09-08 01:17:47,807 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 357 transitions. [2019-09-08 01:17:47,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2019-09-08 01:17:47,808 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:47,808 INFO L399 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:47,808 INFO L418 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:47,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:47,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1199572155, now seen corresponding path program 61 times [2019-09-08 01:17:47,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:47,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:47,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:47,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:47,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:49,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:49,760 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:49,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:17:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:50,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 3395 conjuncts, 72 conjunts are in the unsatisfiable core [2019-09-08 01:17:50,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:50,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:50,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2019-09-08 01:17:50,378 INFO L454 AbstractCegarLoop]: Interpolant automaton has 73 states [2019-09-08 01:17:50,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2019-09-08 01:17:50,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2019-09-08 01:17:50,379 INFO L87 Difference]: Start difference. First operand 356 states and 357 transitions. Second operand 73 states. [2019-09-08 01:17:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:50,741 INFO L93 Difference]: Finished difference Result 371 states and 373 transitions. [2019-09-08 01:17:50,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2019-09-08 01:17:50,741 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 354 [2019-09-08 01:17:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:50,743 INFO L225 Difference]: With dead ends: 371 [2019-09-08 01:17:50,743 INFO L226 Difference]: Without dead ends: 364 [2019-09-08 01:17:50,743 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2019-09-08 01:17:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2019-09-08 01:17:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2019-09-08 01:17:50,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2019-09-08 01:17:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 362 transitions. [2019-09-08 01:17:50,748 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 362 transitions. Word has length 354 [2019-09-08 01:17:50,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:50,749 INFO L475 AbstractCegarLoop]: Abstraction has 361 states and 362 transitions. [2019-09-08 01:17:50,749 INFO L476 AbstractCegarLoop]: Interpolant automaton has 73 states. [2019-09-08 01:17:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 362 transitions. [2019-09-08 01:17:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2019-09-08 01:17:50,750 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:50,751 INFO L399 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:50,751 INFO L418 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:50,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:50,751 INFO L82 PathProgramCache]: Analyzing trace with hash -457786521, now seen corresponding path program 62 times [2019-09-08 01:17:50,751 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:50,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:50,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:50,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:17:50,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:52,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:52,699 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:52,711 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:17:53,171 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:17:53,171 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:53,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 3437 conjuncts, 73 conjunts are in the unsatisfiable core [2019-09-08 01:17:53,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:53,366 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:53,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2019-09-08 01:17:53,367 INFO L454 AbstractCegarLoop]: Interpolant automaton has 74 states [2019-09-08 01:17:53,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2019-09-08 01:17:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2019-09-08 01:17:53,369 INFO L87 Difference]: Start difference. First operand 361 states and 362 transitions. Second operand 74 states. [2019-09-08 01:17:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:53,677 INFO L93 Difference]: Finished difference Result 376 states and 378 transitions. [2019-09-08 01:17:53,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2019-09-08 01:17:53,678 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 359 [2019-09-08 01:17:53,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:53,679 INFO L225 Difference]: With dead ends: 376 [2019-09-08 01:17:53,679 INFO L226 Difference]: Without dead ends: 369 [2019-09-08 01:17:53,680 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2019-09-08 01:17:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2019-09-08 01:17:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 366. [2019-09-08 01:17:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2019-09-08 01:17:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 367 transitions. [2019-09-08 01:17:53,684 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 367 transitions. Word has length 359 [2019-09-08 01:17:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:53,684 INFO L475 AbstractCegarLoop]: Abstraction has 366 states and 367 transitions. [2019-09-08 01:17:53,684 INFO L476 AbstractCegarLoop]: Interpolant automaton has 74 states. [2019-09-08 01:17:53,685 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 367 transitions. [2019-09-08 01:17:53,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2019-09-08 01:17:53,686 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:53,686 INFO L399 BasicCegarLoop]: trace histogram [64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:53,686 INFO L418 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:53,687 INFO L82 PathProgramCache]: Analyzing trace with hash -792506309, now seen corresponding path program 63 times [2019-09-08 01:17:53,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:53,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:53,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:53,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:53,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9891 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:55,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:55,731 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:55,742 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:17:56,606 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2019-09-08 01:17:56,606 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:56,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 3479 conjuncts, 74 conjunts are in the unsatisfiable core [2019-09-08 01:17:56,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9891 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:56,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:56,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2019-09-08 01:17:56,738 INFO L454 AbstractCegarLoop]: Interpolant automaton has 75 states [2019-09-08 01:17:56,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2019-09-08 01:17:56,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2019-09-08 01:17:56,739 INFO L87 Difference]: Start difference. First operand 366 states and 367 transitions. Second operand 75 states. [2019-09-08 01:17:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:17:57,001 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2019-09-08 01:17:57,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2019-09-08 01:17:57,001 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 364 [2019-09-08 01:17:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:17:57,002 INFO L225 Difference]: With dead ends: 381 [2019-09-08 01:17:57,003 INFO L226 Difference]: Without dead ends: 374 [2019-09-08 01:17:57,003 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2019-09-08 01:17:57,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2019-09-08 01:17:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 371. [2019-09-08 01:17:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2019-09-08 01:17:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2019-09-08 01:17:57,010 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 364 [2019-09-08 01:17:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:17:57,010 INFO L475 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2019-09-08 01:17:57,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 75 states. [2019-09-08 01:17:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2019-09-08 01:17:57,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2019-09-08 01:17:57,012 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:17:57,012 INFO L399 BasicCegarLoop]: trace histogram [65, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:17:57,013 INFO L418 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:17:57,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:17:57,013 INFO L82 PathProgramCache]: Analyzing trace with hash -2093572121, now seen corresponding path program 64 times [2019-09-08 01:17:57,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:17:57,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:17:57,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:57,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:17:57,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:17:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:17:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10208 backedges. 0 proven. 10208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:59,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:17:59,204 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:17:59,216 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:17:59,697 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:17:59,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:17:59,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 3521 conjuncts, 75 conjunts are in the unsatisfiable core [2019-09-08 01:17:59,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:17:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10208 backedges. 0 proven. 10208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:17:59,838 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:17:59,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2019-09-08 01:17:59,839 INFO L454 AbstractCegarLoop]: Interpolant automaton has 76 states [2019-09-08 01:17:59,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2019-09-08 01:17:59,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2019-09-08 01:17:59,839 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand 76 states. [2019-09-08 01:18:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:00,143 INFO L93 Difference]: Finished difference Result 386 states and 388 transitions. [2019-09-08 01:18:00,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-09-08 01:18:00,144 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 369 [2019-09-08 01:18:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:00,145 INFO L225 Difference]: With dead ends: 386 [2019-09-08 01:18:00,145 INFO L226 Difference]: Without dead ends: 379 [2019-09-08 01:18:00,146 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2019-09-08 01:18:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2019-09-08 01:18:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 376. [2019-09-08 01:18:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2019-09-08 01:18:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2019-09-08 01:18:00,150 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 369 [2019-09-08 01:18:00,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:00,150 INFO L475 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2019-09-08 01:18:00,151 INFO L476 AbstractCegarLoop]: Interpolant automaton has 76 states. [2019-09-08 01:18:00,151 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2019-09-08 01:18:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2019-09-08 01:18:00,153 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:00,153 INFO L399 BasicCegarLoop]: trace histogram [66, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:00,153 INFO L418 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:00,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1425947579, now seen corresponding path program 65 times [2019-09-08 01:18:00,154 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:00,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:00,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:00,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:00,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10530 backedges. 0 proven. 10530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:02,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:02,216 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:02,230 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:18:02,952 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2019-09-08 01:18:02,953 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:02,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 76 conjunts are in the unsatisfiable core [2019-09-08 01:18:02,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10530 backedges. 0 proven. 10530 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:03,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:03,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2019-09-08 01:18:03,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 77 states [2019-09-08 01:18:03,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2019-09-08 01:18:03,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2019-09-08 01:18:03,094 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand 77 states. [2019-09-08 01:18:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:03,454 INFO L93 Difference]: Finished difference Result 391 states and 393 transitions. [2019-09-08 01:18:03,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2019-09-08 01:18:03,454 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 374 [2019-09-08 01:18:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:03,456 INFO L225 Difference]: With dead ends: 391 [2019-09-08 01:18:03,456 INFO L226 Difference]: Without dead ends: 384 [2019-09-08 01:18:03,456 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2019-09-08 01:18:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2019-09-08 01:18:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2019-09-08 01:18:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2019-09-08 01:18:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2019-09-08 01:18:03,460 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 374 [2019-09-08 01:18:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:03,461 INFO L475 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2019-09-08 01:18:03,461 INFO L476 AbstractCegarLoop]: Interpolant automaton has 77 states. [2019-09-08 01:18:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2019-09-08 01:18:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2019-09-08 01:18:03,462 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:03,462 INFO L399 BasicCegarLoop]: trace histogram [67, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:03,462 INFO L418 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:03,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:03,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1887626343, now seen corresponding path program 66 times [2019-09-08 01:18:03,463 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:03,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:03,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:03,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:03,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10857 backedges. 0 proven. 10857 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:05,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:05,668 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:05,678 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:18:06,580 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2019-09-08 01:18:06,580 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:06,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 3605 conjuncts, 77 conjunts are in the unsatisfiable core [2019-09-08 01:18:06,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 10857 backedges. 0 proven. 10857 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:06,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:06,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2019-09-08 01:18:06,728 INFO L454 AbstractCegarLoop]: Interpolant automaton has 78 states [2019-09-08 01:18:06,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2019-09-08 01:18:06,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2019-09-08 01:18:06,729 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand 78 states. [2019-09-08 01:18:07,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:07,098 INFO L93 Difference]: Finished difference Result 396 states and 398 transitions. [2019-09-08 01:18:07,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2019-09-08 01:18:07,098 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 379 [2019-09-08 01:18:07,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:07,099 INFO L225 Difference]: With dead ends: 396 [2019-09-08 01:18:07,100 INFO L226 Difference]: Without dead ends: 389 [2019-09-08 01:18:07,100 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2019-09-08 01:18:07,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2019-09-08 01:18:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 386. [2019-09-08 01:18:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2019-09-08 01:18:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 387 transitions. [2019-09-08 01:18:07,105 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 387 transitions. Word has length 379 [2019-09-08 01:18:07,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:07,105 INFO L475 AbstractCegarLoop]: Abstraction has 386 states and 387 transitions. [2019-09-08 01:18:07,105 INFO L476 AbstractCegarLoop]: Interpolant automaton has 78 states. [2019-09-08 01:18:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 387 transitions. [2019-09-08 01:18:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2019-09-08 01:18:07,107 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:07,107 INFO L399 BasicCegarLoop]: trace histogram [68, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:07,107 INFO L418 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:07,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:07,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1154955461, now seen corresponding path program 67 times [2019-09-08 01:18:07,108 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:07,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:07,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:07,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:07,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11189 backedges. 0 proven. 11189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:09,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:09,318 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:09,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:18:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:09,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 3647 conjuncts, 78 conjunts are in the unsatisfiable core [2019-09-08 01:18:09,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 11189 backedges. 0 proven. 11189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:09,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:09,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2019-09-08 01:18:09,961 INFO L454 AbstractCegarLoop]: Interpolant automaton has 79 states [2019-09-08 01:18:09,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2019-09-08 01:18:09,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2019-09-08 01:18:09,962 INFO L87 Difference]: Start difference. First operand 386 states and 387 transitions. Second operand 79 states. [2019-09-08 01:18:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:10,342 INFO L93 Difference]: Finished difference Result 401 states and 403 transitions. [2019-09-08 01:18:10,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-09-08 01:18:10,342 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 384 [2019-09-08 01:18:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:10,344 INFO L225 Difference]: With dead ends: 401 [2019-09-08 01:18:10,344 INFO L226 Difference]: Without dead ends: 394 [2019-09-08 01:18:10,345 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2019-09-08 01:18:10,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2019-09-08 01:18:10,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 391. [2019-09-08 01:18:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2019-09-08 01:18:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2019-09-08 01:18:10,350 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 384 [2019-09-08 01:18:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:10,351 INFO L475 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2019-09-08 01:18:10,351 INFO L476 AbstractCegarLoop]: Interpolant automaton has 79 states. [2019-09-08 01:18:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2019-09-08 01:18:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2019-09-08 01:18:10,353 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:10,353 INFO L399 BasicCegarLoop]: trace histogram [69, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:10,353 INFO L418 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1621330151, now seen corresponding path program 68 times [2019-09-08 01:18:10,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:10,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:10,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:10,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:18:10,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 11526 backedges. 0 proven. 11526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:12,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:12,615 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:12,625 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:18:13,132 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:18:13,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:13,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 3689 conjuncts, 79 conjunts are in the unsatisfiable core [2019-09-08 01:18:13,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11526 backedges. 0 proven. 11526 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:13,249 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:13,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2019-09-08 01:18:13,250 INFO L454 AbstractCegarLoop]: Interpolant automaton has 80 states [2019-09-08 01:18:13,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2019-09-08 01:18:13,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2019-09-08 01:18:13,251 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand 80 states. [2019-09-08 01:18:13,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:13,631 INFO L93 Difference]: Finished difference Result 406 states and 408 transitions. [2019-09-08 01:18:13,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2019-09-08 01:18:13,632 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 389 [2019-09-08 01:18:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:13,634 INFO L225 Difference]: With dead ends: 406 [2019-09-08 01:18:13,635 INFO L226 Difference]: Without dead ends: 399 [2019-09-08 01:18:13,635 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2019-09-08 01:18:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2019-09-08 01:18:13,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 396. [2019-09-08 01:18:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2019-09-08 01:18:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 397 transitions. [2019-09-08 01:18:13,640 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 397 transitions. Word has length 389 [2019-09-08 01:18:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:13,640 INFO L475 AbstractCegarLoop]: Abstraction has 396 states and 397 transitions. [2019-09-08 01:18:13,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 80 states. [2019-09-08 01:18:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 397 transitions. [2019-09-08 01:18:13,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2019-09-08 01:18:13,642 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:13,642 INFO L399 BasicCegarLoop]: trace histogram [70, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:13,642 INFO L418 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:13,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:13,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1808076101, now seen corresponding path program 69 times [2019-09-08 01:18:13,642 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:13,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:13,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:13,643 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:13,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 11868 backedges. 0 proven. 11868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:15,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:15,974 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:15,985 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:18:16,966 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2019-09-08 01:18:16,967 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:16,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 80 conjunts are in the unsatisfiable core [2019-09-08 01:18:16,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11868 backedges. 0 proven. 11868 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:17,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:17,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2019-09-08 01:18:17,085 INFO L454 AbstractCegarLoop]: Interpolant automaton has 81 states [2019-09-08 01:18:17,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2019-09-08 01:18:17,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2019-09-08 01:18:17,086 INFO L87 Difference]: Start difference. First operand 396 states and 397 transitions. Second operand 81 states. [2019-09-08 01:18:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:17,542 INFO L93 Difference]: Finished difference Result 411 states and 413 transitions. [2019-09-08 01:18:17,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-09-08 01:18:17,542 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 394 [2019-09-08 01:18:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:17,544 INFO L225 Difference]: With dead ends: 411 [2019-09-08 01:18:17,544 INFO L226 Difference]: Without dead ends: 404 [2019-09-08 01:18:17,544 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2019-09-08 01:18:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2019-09-08 01:18:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 401. [2019-09-08 01:18:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2019-09-08 01:18:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 402 transitions. [2019-09-08 01:18:17,549 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 402 transitions. Word has length 394 [2019-09-08 01:18:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:17,549 INFO L475 AbstractCegarLoop]: Abstraction has 401 states and 402 transitions. [2019-09-08 01:18:17,549 INFO L476 AbstractCegarLoop]: Interpolant automaton has 81 states. [2019-09-08 01:18:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 402 transitions. [2019-09-08 01:18:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2019-09-08 01:18:17,550 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:17,551 INFO L399 BasicCegarLoop]: trace histogram [71, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:17,551 INFO L418 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:17,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:17,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1650422425, now seen corresponding path program 70 times [2019-09-08 01:18:17,551 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:17,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:17,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:17,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:17,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12215 backedges. 0 proven. 12215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:19,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:19,900 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:19,909 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:18:20,431 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:18:20,431 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:20,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 3773 conjuncts, 81 conjunts are in the unsatisfiable core [2019-09-08 01:18:20,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12215 backedges. 0 proven. 12215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:20,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:20,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2019-09-08 01:18:20,550 INFO L454 AbstractCegarLoop]: Interpolant automaton has 82 states [2019-09-08 01:18:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2019-09-08 01:18:20,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2019-09-08 01:18:20,551 INFO L87 Difference]: Start difference. First operand 401 states and 402 transitions. Second operand 82 states. [2019-09-08 01:18:21,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:21,033 INFO L93 Difference]: Finished difference Result 416 states and 418 transitions. [2019-09-08 01:18:21,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2019-09-08 01:18:21,033 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 399 [2019-09-08 01:18:21,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:21,034 INFO L225 Difference]: With dead ends: 416 [2019-09-08 01:18:21,034 INFO L226 Difference]: Without dead ends: 409 [2019-09-08 01:18:21,035 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2019-09-08 01:18:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2019-09-08 01:18:21,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 406. [2019-09-08 01:18:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2019-09-08 01:18:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 407 transitions. [2019-09-08 01:18:21,039 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 407 transitions. Word has length 399 [2019-09-08 01:18:21,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:21,039 INFO L475 AbstractCegarLoop]: Abstraction has 406 states and 407 transitions. [2019-09-08 01:18:21,039 INFO L476 AbstractCegarLoop]: Interpolant automaton has 82 states. [2019-09-08 01:18:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 407 transitions. [2019-09-08 01:18:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2019-09-08 01:18:21,041 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:21,041 INFO L399 BasicCegarLoop]: trace histogram [72, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:21,041 INFO L418 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:21,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:21,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1691566533, now seen corresponding path program 71 times [2019-09-08 01:18:21,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:21,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:21,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:21,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:21,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12567 backedges. 0 proven. 12567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:23,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:23,498 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:23,507 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:18:24,321 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2019-09-08 01:18:24,321 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:24,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 3815 conjuncts, 82 conjunts are in the unsatisfiable core [2019-09-08 01:18:24,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12567 backedges. 0 proven. 12567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:24,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:24,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2019-09-08 01:18:24,474 INFO L454 AbstractCegarLoop]: Interpolant automaton has 83 states [2019-09-08 01:18:24,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2019-09-08 01:18:24,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2019-09-08 01:18:24,475 INFO L87 Difference]: Start difference. First operand 406 states and 407 transitions. Second operand 83 states. [2019-09-08 01:18:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:24,973 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2019-09-08 01:18:24,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2019-09-08 01:18:24,973 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 404 [2019-09-08 01:18:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:24,975 INFO L225 Difference]: With dead ends: 421 [2019-09-08 01:18:24,975 INFO L226 Difference]: Without dead ends: 414 [2019-09-08 01:18:24,976 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2019-09-08 01:18:24,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-09-08 01:18:24,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 411. [2019-09-08 01:18:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-09-08 01:18:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 412 transitions. [2019-09-08 01:18:24,980 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 412 transitions. Word has length 404 [2019-09-08 01:18:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:24,980 INFO L475 AbstractCegarLoop]: Abstraction has 411 states and 412 transitions. [2019-09-08 01:18:24,980 INFO L476 AbstractCegarLoop]: Interpolant automaton has 83 states. [2019-09-08 01:18:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 412 transitions. [2019-09-08 01:18:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2019-09-08 01:18:24,982 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:24,982 INFO L399 BasicCegarLoop]: trace histogram [73, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:24,982 INFO L418 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash -2021527065, now seen corresponding path program 72 times [2019-09-08 01:18:24,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:24,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:24,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:24,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:24,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12924 backedges. 0 proven. 12924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:27,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:27,455 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:27,465 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:18:28,495 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2019-09-08 01:18:28,496 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:28,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 3857 conjuncts, 83 conjunts are in the unsatisfiable core [2019-09-08 01:18:28,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12924 backedges. 0 proven. 12924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:28,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:28,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2019-09-08 01:18:28,661 INFO L454 AbstractCegarLoop]: Interpolant automaton has 84 states [2019-09-08 01:18:28,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2019-09-08 01:18:28,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2019-09-08 01:18:28,662 INFO L87 Difference]: Start difference. First operand 411 states and 412 transitions. Second operand 84 states. [2019-09-08 01:18:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:29,151 INFO L93 Difference]: Finished difference Result 426 states and 428 transitions. [2019-09-08 01:18:29,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2019-09-08 01:18:29,151 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 409 [2019-09-08 01:18:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:29,153 INFO L225 Difference]: With dead ends: 426 [2019-09-08 01:18:29,153 INFO L226 Difference]: Without dead ends: 419 [2019-09-08 01:18:29,154 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2019-09-08 01:18:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2019-09-08 01:18:29,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 416. [2019-09-08 01:18:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-09-08 01:18:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2019-09-08 01:18:29,159 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 409 [2019-09-08 01:18:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:29,159 INFO L475 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2019-09-08 01:18:29,159 INFO L476 AbstractCegarLoop]: Interpolant automaton has 84 states. [2019-09-08 01:18:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2019-09-08 01:18:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2019-09-08 01:18:29,161 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:29,162 INFO L399 BasicCegarLoop]: trace histogram [74, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:29,162 INFO L418 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:29,162 INFO L82 PathProgramCache]: Analyzing trace with hash 888547771, now seen corresponding path program 73 times [2019-09-08 01:18:29,162 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:29,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:29,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:29,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:29,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:31,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13286 backedges. 0 proven. 13286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:31,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:31,691 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:31,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:18:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:32,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 3899 conjuncts, 84 conjunts are in the unsatisfiable core [2019-09-08 01:18:32,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13286 backedges. 0 proven. 13286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:32,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:32,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2019-09-08 01:18:32,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 85 states [2019-09-08 01:18:32,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2019-09-08 01:18:32,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2019-09-08 01:18:32,377 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand 85 states. [2019-09-08 01:18:32,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:32,855 INFO L93 Difference]: Finished difference Result 431 states and 433 transitions. [2019-09-08 01:18:32,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2019-09-08 01:18:32,855 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 414 [2019-09-08 01:18:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:32,857 INFO L225 Difference]: With dead ends: 431 [2019-09-08 01:18:32,857 INFO L226 Difference]: Without dead ends: 424 [2019-09-08 01:18:32,858 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2019-09-08 01:18:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-09-08 01:18:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 421. [2019-09-08 01:18:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2019-09-08 01:18:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 422 transitions. [2019-09-08 01:18:32,862 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 422 transitions. Word has length 414 [2019-09-08 01:18:32,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:32,862 INFO L475 AbstractCegarLoop]: Abstraction has 421 states and 422 transitions. [2019-09-08 01:18:32,862 INFO L476 AbstractCegarLoop]: Interpolant automaton has 85 states. [2019-09-08 01:18:32,863 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 422 transitions. [2019-09-08 01:18:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2019-09-08 01:18:32,864 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:32,864 INFO L399 BasicCegarLoop]: trace histogram [75, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:32,864 INFO L418 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:32,865 INFO L82 PathProgramCache]: Analyzing trace with hash 340768359, now seen corresponding path program 74 times [2019-09-08 01:18:32,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:32,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:32,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:32,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:18:32,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13653 backedges. 0 proven. 13653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:35,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:35,453 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:35,464 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:18:35,993 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:18:35,993 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:36,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 3941 conjuncts, 85 conjunts are in the unsatisfiable core [2019-09-08 01:18:36,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13653 backedges. 0 proven. 13653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:36,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:36,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2019-09-08 01:18:36,160 INFO L454 AbstractCegarLoop]: Interpolant automaton has 86 states [2019-09-08 01:18:36,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2019-09-08 01:18:36,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2019-09-08 01:18:36,161 INFO L87 Difference]: Start difference. First operand 421 states and 422 transitions. Second operand 86 states. [2019-09-08 01:18:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:36,589 INFO L93 Difference]: Finished difference Result 436 states and 438 transitions. [2019-09-08 01:18:36,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2019-09-08 01:18:36,590 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 419 [2019-09-08 01:18:36,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:36,591 INFO L225 Difference]: With dead ends: 436 [2019-09-08 01:18:36,591 INFO L226 Difference]: Without dead ends: 429 [2019-09-08 01:18:36,592 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2019-09-08 01:18:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-09-08 01:18:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 426. [2019-09-08 01:18:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-09-08 01:18:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 427 transitions. [2019-09-08 01:18:36,597 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 427 transitions. Word has length 419 [2019-09-08 01:18:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:36,598 INFO L475 AbstractCegarLoop]: Abstraction has 426 states and 427 transitions. [2019-09-08 01:18:36,598 INFO L476 AbstractCegarLoop]: Interpolant automaton has 86 states. [2019-09-08 01:18:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 427 transitions. [2019-09-08 01:18:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2019-09-08 01:18:36,599 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:36,600 INFO L399 BasicCegarLoop]: trace histogram [76, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:36,600 INFO L418 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:36,600 INFO L82 PathProgramCache]: Analyzing trace with hash -259050181, now seen corresponding path program 75 times [2019-09-08 01:18:36,600 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:36,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:36,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:36,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:36,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 14025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:39,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:39,326 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:39,335 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:18:40,440 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2019-09-08 01:18:40,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:40,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 3983 conjuncts, 86 conjunts are in the unsatisfiable core [2019-09-08 01:18:40,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 14025 backedges. 0 proven. 14025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:40,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:40,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2019-09-08 01:18:40,642 INFO L454 AbstractCegarLoop]: Interpolant automaton has 87 states [2019-09-08 01:18:40,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2019-09-08 01:18:40,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2019-09-08 01:18:40,644 INFO L87 Difference]: Start difference. First operand 426 states and 427 transitions. Second operand 87 states. [2019-09-08 01:18:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:41,034 INFO L93 Difference]: Finished difference Result 441 states and 443 transitions. [2019-09-08 01:18:41,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2019-09-08 01:18:41,034 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 424 [2019-09-08 01:18:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:41,037 INFO L225 Difference]: With dead ends: 441 [2019-09-08 01:18:41,037 INFO L226 Difference]: Without dead ends: 434 [2019-09-08 01:18:41,038 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2019-09-08 01:18:41,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2019-09-08 01:18:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2019-09-08 01:18:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2019-09-08 01:18:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2019-09-08 01:18:41,042 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 424 [2019-09-08 01:18:41,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:41,043 INFO L475 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2019-09-08 01:18:41,043 INFO L476 AbstractCegarLoop]: Interpolant automaton has 87 states. [2019-09-08 01:18:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2019-09-08 01:18:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2019-09-08 01:18:41,044 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:41,045 INFO L399 BasicCegarLoop]: trace histogram [77, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:41,045 INFO L418 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:41,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1343347431, now seen corresponding path program 76 times [2019-09-08 01:18:41,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:41,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:41,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:41,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:41,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14402 backedges. 0 proven. 14402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:43,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:43,848 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:43,858 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:18:44,419 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:18:44,419 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:44,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 4025 conjuncts, 87 conjunts are in the unsatisfiable core [2019-09-08 01:18:44,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 14402 backedges. 0 proven. 14402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:44,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:44,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2019-09-08 01:18:44,615 INFO L454 AbstractCegarLoop]: Interpolant automaton has 88 states [2019-09-08 01:18:44,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2019-09-08 01:18:44,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2019-09-08 01:18:44,615 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand 88 states. [2019-09-08 01:18:45,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:45,064 INFO L93 Difference]: Finished difference Result 446 states and 448 transitions. [2019-09-08 01:18:45,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-09-08 01:18:45,064 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 429 [2019-09-08 01:18:45,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:45,066 INFO L225 Difference]: With dead ends: 446 [2019-09-08 01:18:45,066 INFO L226 Difference]: Without dead ends: 439 [2019-09-08 01:18:45,066 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2019-09-08 01:18:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-09-08 01:18:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 436. [2019-09-08 01:18:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2019-09-08 01:18:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 437 transitions. [2019-09-08 01:18:45,071 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 437 transitions. Word has length 429 [2019-09-08 01:18:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:45,071 INFO L475 AbstractCegarLoop]: Abstraction has 436 states and 437 transitions. [2019-09-08 01:18:45,071 INFO L476 AbstractCegarLoop]: Interpolant automaton has 88 states. [2019-09-08 01:18:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 437 transitions. [2019-09-08 01:18:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2019-09-08 01:18:45,073 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:45,073 INFO L399 BasicCegarLoop]: trace histogram [78, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:45,074 INFO L418 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 116383931, now seen corresponding path program 77 times [2019-09-08 01:18:45,074 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:45,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:45,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:45,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:45,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14784 backedges. 0 proven. 14784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:47,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:47,855 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:47,867 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:18:48,830 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2019-09-08 01:18:48,830 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:48,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 4067 conjuncts, 88 conjunts are in the unsatisfiable core [2019-09-08 01:18:48,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14784 backedges. 0 proven. 14784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:48,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:48,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2019-09-08 01:18:48,974 INFO L454 AbstractCegarLoop]: Interpolant automaton has 89 states [2019-09-08 01:18:48,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2019-09-08 01:18:48,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2019-09-08 01:18:48,975 INFO L87 Difference]: Start difference. First operand 436 states and 437 transitions. Second operand 89 states. [2019-09-08 01:18:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:49,411 INFO L93 Difference]: Finished difference Result 451 states and 453 transitions. [2019-09-08 01:18:49,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-09-08 01:18:49,411 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 434 [2019-09-08 01:18:49,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:49,413 INFO L225 Difference]: With dead ends: 451 [2019-09-08 01:18:49,413 INFO L226 Difference]: Without dead ends: 444 [2019-09-08 01:18:49,414 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2019-09-08 01:18:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-09-08 01:18:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 441. [2019-09-08 01:18:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-09-08 01:18:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 442 transitions. [2019-09-08 01:18:49,419 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 442 transitions. Word has length 434 [2019-09-08 01:18:49,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:49,419 INFO L475 AbstractCegarLoop]: Abstraction has 441 states and 442 transitions. [2019-09-08 01:18:49,419 INFO L476 AbstractCegarLoop]: Interpolant automaton has 89 states. [2019-09-08 01:18:49,419 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 442 transitions. [2019-09-08 01:18:49,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2019-09-08 01:18:49,421 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:49,421 INFO L399 BasicCegarLoop]: trace histogram [79, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:49,421 INFO L418 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:49,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:49,421 INFO L82 PathProgramCache]: Analyzing trace with hash -590323865, now seen corresponding path program 78 times [2019-09-08 01:18:49,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:49,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:49,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:49,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:49,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 15171 backedges. 0 proven. 15171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:52,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:52,255 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:52,265 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:18:53,450 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2019-09-08 01:18:53,450 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:18:53,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 4109 conjuncts, 89 conjunts are in the unsatisfiable core [2019-09-08 01:18:53,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15171 backedges. 0 proven. 15171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:53,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:53,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2019-09-08 01:18:53,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 90 states [2019-09-08 01:18:53,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2019-09-08 01:18:53,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2019-09-08 01:18:53,593 INFO L87 Difference]: Start difference. First operand 441 states and 442 transitions. Second operand 90 states. [2019-09-08 01:18:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:54,042 INFO L93 Difference]: Finished difference Result 456 states and 458 transitions. [2019-09-08 01:18:54,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2019-09-08 01:18:54,043 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 439 [2019-09-08 01:18:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:54,045 INFO L225 Difference]: With dead ends: 456 [2019-09-08 01:18:54,045 INFO L226 Difference]: Without dead ends: 449 [2019-09-08 01:18:54,045 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2019-09-08 01:18:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2019-09-08 01:18:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 446. [2019-09-08 01:18:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2019-09-08 01:18:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 447 transitions. [2019-09-08 01:18:54,051 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 447 transitions. Word has length 439 [2019-09-08 01:18:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:54,051 INFO L475 AbstractCegarLoop]: Abstraction has 446 states and 447 transitions. [2019-09-08 01:18:54,051 INFO L476 AbstractCegarLoop]: Interpolant automaton has 90 states. [2019-09-08 01:18:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 447 transitions. [2019-09-08 01:18:54,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2019-09-08 01:18:54,053 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:54,053 INFO L399 BasicCegarLoop]: trace histogram [80, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:54,054 INFO L418 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:54,054 INFO L82 PathProgramCache]: Analyzing trace with hash -619697093, now seen corresponding path program 79 times [2019-09-08 01:18:54,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:54,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:54,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:54,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:18:54,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15563 backedges. 0 proven. 15563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:57,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:18:57,012 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:18:57,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:18:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:18:57,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 4151 conjuncts, 90 conjunts are in the unsatisfiable core [2019-09-08 01:18:57,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:18:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 15563 backedges. 0 proven. 15563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:18:57,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:18:57,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2019-09-08 01:18:57,746 INFO L454 AbstractCegarLoop]: Interpolant automaton has 91 states [2019-09-08 01:18:57,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2019-09-08 01:18:57,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2019-09-08 01:18:57,747 INFO L87 Difference]: Start difference. First operand 446 states and 447 transitions. Second operand 91 states. [2019-09-08 01:18:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:18:58,205 INFO L93 Difference]: Finished difference Result 461 states and 463 transitions. [2019-09-08 01:18:58,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2019-09-08 01:18:58,206 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 444 [2019-09-08 01:18:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:18:58,208 INFO L225 Difference]: With dead ends: 461 [2019-09-08 01:18:58,208 INFO L226 Difference]: Without dead ends: 454 [2019-09-08 01:18:58,209 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2019-09-08 01:18:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-09-08 01:18:58,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 451. [2019-09-08 01:18:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2019-09-08 01:18:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 452 transitions. [2019-09-08 01:18:58,214 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 452 transitions. Word has length 444 [2019-09-08 01:18:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:18:58,215 INFO L475 AbstractCegarLoop]: Abstraction has 451 states and 452 transitions. [2019-09-08 01:18:58,215 INFO L476 AbstractCegarLoop]: Interpolant automaton has 91 states. [2019-09-08 01:18:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 452 transitions. [2019-09-08 01:18:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2019-09-08 01:18:58,216 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:18:58,217 INFO L399 BasicCegarLoop]: trace histogram [81, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:18:58,217 INFO L418 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:18:58,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:18:58,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1922253799, now seen corresponding path program 80 times [2019-09-08 01:18:58,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:18:58,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:18:58,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:58,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:18:58,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:18:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 15960 backedges. 0 proven. 15960 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:01,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:01,245 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:01,255 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:19:01,831 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:19:01,831 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:01,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 4193 conjuncts, 91 conjunts are in the unsatisfiable core [2019-09-08 01:19:01,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15960 backedges. 0 proven. 15960 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:01,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:01,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2019-09-08 01:19:01,976 INFO L454 AbstractCegarLoop]: Interpolant automaton has 92 states [2019-09-08 01:19:01,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2019-09-08 01:19:01,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2019-09-08 01:19:01,977 INFO L87 Difference]: Start difference. First operand 451 states and 452 transitions. Second operand 92 states. [2019-09-08 01:19:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:02,519 INFO L93 Difference]: Finished difference Result 466 states and 468 transitions. [2019-09-08 01:19:02,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2019-09-08 01:19:02,520 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 449 [2019-09-08 01:19:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:02,522 INFO L225 Difference]: With dead ends: 466 [2019-09-08 01:19:02,522 INFO L226 Difference]: Without dead ends: 459 [2019-09-08 01:19:02,522 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2019-09-08 01:19:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2019-09-08 01:19:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 456. [2019-09-08 01:19:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2019-09-08 01:19:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 457 transitions. [2019-09-08 01:19:02,527 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 457 transitions. Word has length 449 [2019-09-08 01:19:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:02,527 INFO L475 AbstractCegarLoop]: Abstraction has 456 states and 457 transitions. [2019-09-08 01:19:02,528 INFO L476 AbstractCegarLoop]: Interpolant automaton has 92 states. [2019-09-08 01:19:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 457 transitions. [2019-09-08 01:19:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2019-09-08 01:19:02,529 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:02,530 INFO L399 BasicCegarLoop]: trace histogram [82, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:02,530 INFO L418 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:02,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:02,530 INFO L82 PathProgramCache]: Analyzing trace with hash 2045253563, now seen corresponding path program 81 times [2019-09-08 01:19:02,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:02,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:02,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:02,531 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:02,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16362 backedges. 0 proven. 16362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:05,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:05,585 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:05,598 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:19:06,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2019-09-08 01:19:06,817 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:06,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 4235 conjuncts, 92 conjunts are in the unsatisfiable core [2019-09-08 01:19:06,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16362 backedges. 0 proven. 16362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:06,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:06,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2019-09-08 01:19:06,968 INFO L454 AbstractCegarLoop]: Interpolant automaton has 93 states [2019-09-08 01:19:06,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2019-09-08 01:19:06,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2019-09-08 01:19:06,969 INFO L87 Difference]: Start difference. First operand 456 states and 457 transitions. Second operand 93 states. [2019-09-08 01:19:07,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:07,474 INFO L93 Difference]: Finished difference Result 471 states and 473 transitions. [2019-09-08 01:19:07,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2019-09-08 01:19:07,474 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 454 [2019-09-08 01:19:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:07,477 INFO L225 Difference]: With dead ends: 471 [2019-09-08 01:19:07,477 INFO L226 Difference]: Without dead ends: 464 [2019-09-08 01:19:07,478 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2019-09-08 01:19:07,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-09-08 01:19:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 461. [2019-09-08 01:19:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2019-09-08 01:19:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 462 transitions. [2019-09-08 01:19:07,483 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 462 transitions. Word has length 454 [2019-09-08 01:19:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:07,484 INFO L475 AbstractCegarLoop]: Abstraction has 461 states and 462 transitions. [2019-09-08 01:19:07,484 INFO L476 AbstractCegarLoop]: Interpolant automaton has 93 states. [2019-09-08 01:19:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 462 transitions. [2019-09-08 01:19:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2019-09-08 01:19:07,486 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:07,486 INFO L399 BasicCegarLoop]: trace histogram [83, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:07,486 INFO L418 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:07,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:07,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1600292967, now seen corresponding path program 82 times [2019-09-08 01:19:07,487 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:07,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:07,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:07,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:07,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 16769 backedges. 0 proven. 16769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:10,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:10,616 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:10,628 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:19:11,215 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:19:11,216 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:11,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 4277 conjuncts, 93 conjunts are in the unsatisfiable core [2019-09-08 01:19:11,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16769 backedges. 0 proven. 16769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:11,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:11,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2019-09-08 01:19:11,370 INFO L454 AbstractCegarLoop]: Interpolant automaton has 94 states [2019-09-08 01:19:11,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2019-09-08 01:19:11,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2019-09-08 01:19:11,371 INFO L87 Difference]: Start difference. First operand 461 states and 462 transitions. Second operand 94 states. [2019-09-08 01:19:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:11,739 INFO L93 Difference]: Finished difference Result 476 states and 478 transitions. [2019-09-08 01:19:11,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2019-09-08 01:19:11,740 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 459 [2019-09-08 01:19:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:11,741 INFO L225 Difference]: With dead ends: 476 [2019-09-08 01:19:11,741 INFO L226 Difference]: Without dead ends: 469 [2019-09-08 01:19:11,742 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2019-09-08 01:19:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2019-09-08 01:19:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 466. [2019-09-08 01:19:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-09-08 01:19:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 467 transitions. [2019-09-08 01:19:11,747 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 467 transitions. Word has length 459 [2019-09-08 01:19:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:11,747 INFO L475 AbstractCegarLoop]: Abstraction has 466 states and 467 transitions. [2019-09-08 01:19:11,747 INFO L476 AbstractCegarLoop]: Interpolant automaton has 94 states. [2019-09-08 01:19:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 467 transitions. [2019-09-08 01:19:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2019-09-08 01:19:11,749 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:11,750 INFO L399 BasicCegarLoop]: trace histogram [84, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:11,750 INFO L418 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash 443523899, now seen corresponding path program 83 times [2019-09-08 01:19:11,751 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:11,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:11,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:11,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:11,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 17181 backedges. 0 proven. 17181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:15,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:15,258 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:15,268 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:19:16,285 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2019-09-08 01:19:16,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:16,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 4319 conjuncts, 94 conjunts are in the unsatisfiable core [2019-09-08 01:19:16,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 17181 backedges. 0 proven. 17181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:16,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:16,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2019-09-08 01:19:16,441 INFO L454 AbstractCegarLoop]: Interpolant automaton has 95 states [2019-09-08 01:19:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2019-09-08 01:19:16,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2019-09-08 01:19:16,442 INFO L87 Difference]: Start difference. First operand 466 states and 467 transitions. Second operand 95 states. [2019-09-08 01:19:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:17,067 INFO L93 Difference]: Finished difference Result 481 states and 483 transitions. [2019-09-08 01:19:17,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2019-09-08 01:19:17,068 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 464 [2019-09-08 01:19:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:17,070 INFO L225 Difference]: With dead ends: 481 [2019-09-08 01:19:17,070 INFO L226 Difference]: Without dead ends: 474 [2019-09-08 01:19:17,071 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2019-09-08 01:19:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2019-09-08 01:19:17,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 471. [2019-09-08 01:19:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2019-09-08 01:19:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 472 transitions. [2019-09-08 01:19:17,077 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 472 transitions. Word has length 464 [2019-09-08 01:19:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:17,078 INFO L475 AbstractCegarLoop]: Abstraction has 471 states and 472 transitions. [2019-09-08 01:19:17,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 95 states. [2019-09-08 01:19:17,078 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 472 transitions. [2019-09-08 01:19:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2019-09-08 01:19:17,080 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:17,080 INFO L399 BasicCegarLoop]: trace histogram [85, 84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:17,080 INFO L418 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash 122039527, now seen corresponding path program 84 times [2019-09-08 01:19:17,081 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:17,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:17,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:17,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:17,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17598 backedges. 0 proven. 17598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:20,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:20,374 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:20,384 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:19:21,659 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2019-09-08 01:19:21,659 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:21,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 4361 conjuncts, 95 conjunts are in the unsatisfiable core [2019-09-08 01:19:21,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 17598 backedges. 0 proven. 17598 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:21,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:21,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2019-09-08 01:19:21,819 INFO L454 AbstractCegarLoop]: Interpolant automaton has 96 states [2019-09-08 01:19:21,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2019-09-08 01:19:21,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2019-09-08 01:19:21,820 INFO L87 Difference]: Start difference. First operand 471 states and 472 transitions. Second operand 96 states. [2019-09-08 01:19:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:22,480 INFO L93 Difference]: Finished difference Result 486 states and 488 transitions. [2019-09-08 01:19:22,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2019-09-08 01:19:22,480 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 469 [2019-09-08 01:19:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:22,482 INFO L225 Difference]: With dead ends: 486 [2019-09-08 01:19:22,482 INFO L226 Difference]: Without dead ends: 479 [2019-09-08 01:19:22,483 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2019-09-08 01:19:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2019-09-08 01:19:22,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 476. [2019-09-08 01:19:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2019-09-08 01:19:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 477 transitions. [2019-09-08 01:19:22,488 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 477 transitions. Word has length 469 [2019-09-08 01:19:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:22,488 INFO L475 AbstractCegarLoop]: Abstraction has 476 states and 477 transitions. [2019-09-08 01:19:22,488 INFO L476 AbstractCegarLoop]: Interpolant automaton has 96 states. [2019-09-08 01:19:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 477 transitions. [2019-09-08 01:19:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2019-09-08 01:19:22,490 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:22,490 INFO L399 BasicCegarLoop]: trace histogram [86, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:22,490 INFO L418 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:22,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:22,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1650536773, now seen corresponding path program 85 times [2019-09-08 01:19:22,491 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:22,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:22,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:22,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:22,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:25,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:25,897 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:25,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:19:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:26,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 4403 conjuncts, 96 conjunts are in the unsatisfiable core [2019-09-08 01:19:26,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 0 proven. 18020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:26,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:26,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2019-09-08 01:19:26,683 INFO L454 AbstractCegarLoop]: Interpolant automaton has 97 states [2019-09-08 01:19:26,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2019-09-08 01:19:26,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2019-09-08 01:19:26,685 INFO L87 Difference]: Start difference. First operand 476 states and 477 transitions. Second operand 97 states. [2019-09-08 01:19:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:27,378 INFO L93 Difference]: Finished difference Result 491 states and 493 transitions. [2019-09-08 01:19:27,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2019-09-08 01:19:27,378 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 474 [2019-09-08 01:19:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:27,380 INFO L225 Difference]: With dead ends: 491 [2019-09-08 01:19:27,380 INFO L226 Difference]: Without dead ends: 484 [2019-09-08 01:19:27,381 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2019-09-08 01:19:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2019-09-08 01:19:27,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 481. [2019-09-08 01:19:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2019-09-08 01:19:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 482 transitions. [2019-09-08 01:19:27,385 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 482 transitions. Word has length 474 [2019-09-08 01:19:27,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:27,386 INFO L475 AbstractCegarLoop]: Abstraction has 481 states and 482 transitions. [2019-09-08 01:19:27,386 INFO L476 AbstractCegarLoop]: Interpolant automaton has 97 states. [2019-09-08 01:19:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 482 transitions. [2019-09-08 01:19:27,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2019-09-08 01:19:27,388 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:27,388 INFO L399 BasicCegarLoop]: trace histogram [87, 86, 86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:27,388 INFO L418 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:27,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:27,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1682321767, now seen corresponding path program 86 times [2019-09-08 01:19:27,388 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:27,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:27,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:27,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:19:27,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18447 backedges. 0 proven. 18447 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:30,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:30,834 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:30,846 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:19:31,457 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:19:31,457 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:31,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 4445 conjuncts, 97 conjunts are in the unsatisfiable core [2019-09-08 01:19:31,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18447 backedges. 0 proven. 18447 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:31,619 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:31,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2019-09-08 01:19:31,620 INFO L454 AbstractCegarLoop]: Interpolant automaton has 98 states [2019-09-08 01:19:31,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2019-09-08 01:19:31,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2019-09-08 01:19:31,621 INFO L87 Difference]: Start difference. First operand 481 states and 482 transitions. Second operand 98 states. [2019-09-08 01:19:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:32,105 INFO L93 Difference]: Finished difference Result 496 states and 498 transitions. [2019-09-08 01:19:32,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2019-09-08 01:19:32,106 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 479 [2019-09-08 01:19:32,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:32,109 INFO L225 Difference]: With dead ends: 496 [2019-09-08 01:19:32,109 INFO L226 Difference]: Without dead ends: 489 [2019-09-08 01:19:32,110 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2019-09-08 01:19:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-09-08 01:19:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2019-09-08 01:19:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-09-08 01:19:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 487 transitions. [2019-09-08 01:19:32,115 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 487 transitions. Word has length 479 [2019-09-08 01:19:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:32,116 INFO L475 AbstractCegarLoop]: Abstraction has 486 states and 487 transitions. [2019-09-08 01:19:32,116 INFO L476 AbstractCegarLoop]: Interpolant automaton has 98 states. [2019-09-08 01:19:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 487 transitions. [2019-09-08 01:19:32,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2019-09-08 01:19:32,118 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:32,118 INFO L399 BasicCegarLoop]: trace histogram [88, 87, 87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:32,118 INFO L418 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:32,118 INFO L82 PathProgramCache]: Analyzing trace with hash 242063931, now seen corresponding path program 87 times [2019-09-08 01:19:32,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:32,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:32,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:32,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:32,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18879 backedges. 0 proven. 18879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:35,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:35,705 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:35,717 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:19:37,107 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2019-09-08 01:19:37,108 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:37,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 4487 conjuncts, 98 conjunts are in the unsatisfiable core [2019-09-08 01:19:37,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18879 backedges. 0 proven. 18879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:37,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:37,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2019-09-08 01:19:37,275 INFO L454 AbstractCegarLoop]: Interpolant automaton has 99 states [2019-09-08 01:19:37,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2019-09-08 01:19:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2019-09-08 01:19:37,277 INFO L87 Difference]: Start difference. First operand 486 states and 487 transitions. Second operand 99 states. [2019-09-08 01:19:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:37,932 INFO L93 Difference]: Finished difference Result 501 states and 503 transitions. [2019-09-08 01:19:37,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2019-09-08 01:19:37,933 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 484 [2019-09-08 01:19:37,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:37,935 INFO L225 Difference]: With dead ends: 501 [2019-09-08 01:19:37,935 INFO L226 Difference]: Without dead ends: 494 [2019-09-08 01:19:37,935 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2019-09-08 01:19:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2019-09-08 01:19:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 491. [2019-09-08 01:19:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-09-08 01:19:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 492 transitions. [2019-09-08 01:19:37,940 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 492 transitions. Word has length 484 [2019-09-08 01:19:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:37,941 INFO L475 AbstractCegarLoop]: Abstraction has 491 states and 492 transitions. [2019-09-08 01:19:37,941 INFO L476 AbstractCegarLoop]: Interpolant automaton has 99 states. [2019-09-08 01:19:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 492 transitions. [2019-09-08 01:19:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2019-09-08 01:19:37,943 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:37,943 INFO L399 BasicCegarLoop]: trace histogram [89, 88, 88, 88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:37,943 INFO L418 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:37,943 INFO L82 PathProgramCache]: Analyzing trace with hash -2039835161, now seen corresponding path program 88 times [2019-09-08 01:19:37,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:37,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:37,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:37,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:37,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 19316 backedges. 0 proven. 19316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:41,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:41,478 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:41,491 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:19:42,119 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:19:42,119 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:42,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 4529 conjuncts, 99 conjunts are in the unsatisfiable core [2019-09-08 01:19:42,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 19316 backedges. 0 proven. 19316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:42,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:42,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2019-09-08 01:19:42,290 INFO L454 AbstractCegarLoop]: Interpolant automaton has 100 states [2019-09-08 01:19:42,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2019-09-08 01:19:42,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2019-09-08 01:19:42,293 INFO L87 Difference]: Start difference. First operand 491 states and 492 transitions. Second operand 100 states. [2019-09-08 01:19:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:42,789 INFO L93 Difference]: Finished difference Result 506 states and 508 transitions. [2019-09-08 01:19:42,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2019-09-08 01:19:42,790 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 489 [2019-09-08 01:19:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:42,791 INFO L225 Difference]: With dead ends: 506 [2019-09-08 01:19:42,792 INFO L226 Difference]: Without dead ends: 499 [2019-09-08 01:19:42,793 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2019-09-08 01:19:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-09-08 01:19:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 496. [2019-09-08 01:19:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2019-09-08 01:19:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 497 transitions. [2019-09-08 01:19:42,799 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 497 transitions. Word has length 489 [2019-09-08 01:19:42,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:42,800 INFO L475 AbstractCegarLoop]: Abstraction has 496 states and 497 transitions. [2019-09-08 01:19:42,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 100 states. [2019-09-08 01:19:42,800 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 497 transitions. [2019-09-08 01:19:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2019-09-08 01:19:42,803 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:42,803 INFO L399 BasicCegarLoop]: trace histogram [90, 89, 89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:42,803 INFO L418 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:42,804 INFO L82 PathProgramCache]: Analyzing trace with hash 567543227, now seen corresponding path program 89 times [2019-09-08 01:19:42,804 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:42,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:42,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:42,805 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:42,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19758 backedges. 0 proven. 19758 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:46,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:46,512 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:46,523 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:19:47,616 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2019-09-08 01:19:47,616 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:47,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 4571 conjuncts, 100 conjunts are in the unsatisfiable core [2019-09-08 01:19:47,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 19758 backedges. 0 proven. 19758 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:47,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:47,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2019-09-08 01:19:47,791 INFO L454 AbstractCegarLoop]: Interpolant automaton has 101 states [2019-09-08 01:19:47,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2019-09-08 01:19:47,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2019-09-08 01:19:47,792 INFO L87 Difference]: Start difference. First operand 496 states and 497 transitions. Second operand 101 states. [2019-09-08 01:19:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:48,319 INFO L93 Difference]: Finished difference Result 511 states and 513 transitions. [2019-09-08 01:19:48,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2019-09-08 01:19:48,320 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 494 [2019-09-08 01:19:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:48,322 INFO L225 Difference]: With dead ends: 511 [2019-09-08 01:19:48,322 INFO L226 Difference]: Without dead ends: 504 [2019-09-08 01:19:48,322 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2019-09-08 01:19:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2019-09-08 01:19:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 501. [2019-09-08 01:19:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2019-09-08 01:19:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 502 transitions. [2019-09-08 01:19:48,327 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 502 transitions. Word has length 494 [2019-09-08 01:19:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:48,328 INFO L475 AbstractCegarLoop]: Abstraction has 501 states and 502 transitions. [2019-09-08 01:19:48,328 INFO L476 AbstractCegarLoop]: Interpolant automaton has 101 states. [2019-09-08 01:19:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 502 transitions. [2019-09-08 01:19:48,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2019-09-08 01:19:48,330 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:48,330 INFO L399 BasicCegarLoop]: trace histogram [91, 90, 90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:48,330 INFO L418 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:48,331 INFO L82 PathProgramCache]: Analyzing trace with hash 331045479, now seen corresponding path program 90 times [2019-09-08 01:19:48,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:48,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:48,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:48,331 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:48,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 20205 backedges. 0 proven. 20205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:52,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:52,014 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:52,025 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:19:53,385 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2019-09-08 01:19:53,385 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:19:53,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 4613 conjuncts, 101 conjunts are in the unsatisfiable core [2019-09-08 01:19:53,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20205 backedges. 0 proven. 20205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:53,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:53,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2019-09-08 01:19:53,603 INFO L454 AbstractCegarLoop]: Interpolant automaton has 102 states [2019-09-08 01:19:53,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2019-09-08 01:19:53,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2019-09-08 01:19:53,604 INFO L87 Difference]: Start difference. First operand 501 states and 502 transitions. Second operand 102 states. [2019-09-08 01:19:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:54,189 INFO L93 Difference]: Finished difference Result 516 states and 518 transitions. [2019-09-08 01:19:54,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2019-09-08 01:19:54,189 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 499 [2019-09-08 01:19:54,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:54,191 INFO L225 Difference]: With dead ends: 516 [2019-09-08 01:19:54,191 INFO L226 Difference]: Without dead ends: 509 [2019-09-08 01:19:54,192 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2019-09-08 01:19:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2019-09-08 01:19:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 506. [2019-09-08 01:19:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2019-09-08 01:19:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 507 transitions. [2019-09-08 01:19:54,198 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 507 transitions. Word has length 499 [2019-09-08 01:19:54,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:54,198 INFO L475 AbstractCegarLoop]: Abstraction has 506 states and 507 transitions. [2019-09-08 01:19:54,198 INFO L476 AbstractCegarLoop]: Interpolant automaton has 102 states. [2019-09-08 01:19:54,198 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 507 transitions. [2019-09-08 01:19:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2019-09-08 01:19:54,200 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:54,200 INFO L399 BasicCegarLoop]: trace histogram [92, 91, 91, 91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:54,201 INFO L418 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:54,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1228271301, now seen corresponding path program 91 times [2019-09-08 01:19:54,201 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:54,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:54,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:54,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:19:54,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 20657 backedges. 0 proven. 20657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:58,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:19:58,013 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:19:58,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:19:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:19:58,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 4655 conjuncts, 102 conjunts are in the unsatisfiable core [2019-09-08 01:19:58,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:19:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 20657 backedges. 0 proven. 20657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:19:58,874 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:19:58,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2019-09-08 01:19:58,875 INFO L454 AbstractCegarLoop]: Interpolant automaton has 103 states [2019-09-08 01:19:58,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2019-09-08 01:19:58,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2019-09-08 01:19:58,876 INFO L87 Difference]: Start difference. First operand 506 states and 507 transitions. Second operand 103 states. [2019-09-08 01:19:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:19:59,571 INFO L93 Difference]: Finished difference Result 521 states and 523 transitions. [2019-09-08 01:19:59,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2019-09-08 01:19:59,572 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 504 [2019-09-08 01:19:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:19:59,574 INFO L225 Difference]: With dead ends: 521 [2019-09-08 01:19:59,574 INFO L226 Difference]: Without dead ends: 514 [2019-09-08 01:19:59,574 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2019-09-08 01:19:59,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2019-09-08 01:19:59,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 511. [2019-09-08 01:19:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2019-09-08 01:19:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 512 transitions. [2019-09-08 01:19:59,579 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 512 transitions. Word has length 504 [2019-09-08 01:19:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:19:59,580 INFO L475 AbstractCegarLoop]: Abstraction has 511 states and 512 transitions. [2019-09-08 01:19:59,580 INFO L476 AbstractCegarLoop]: Interpolant automaton has 103 states. [2019-09-08 01:19:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 512 transitions. [2019-09-08 01:19:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2019-09-08 01:19:59,582 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:19:59,582 INFO L399 BasicCegarLoop]: trace histogram [93, 92, 92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:19:59,582 INFO L418 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:19:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:19:59,582 INFO L82 PathProgramCache]: Analyzing trace with hash -935297305, now seen corresponding path program 92 times [2019-09-08 01:19:59,582 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:19:59,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:19:59,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:59,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:19:59,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:19:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 21114 backedges. 0 proven. 21114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:03,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:03,474 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:03,485 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:20:04,155 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:20:04,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:20:04,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 4697 conjuncts, 103 conjunts are in the unsatisfiable core [2019-09-08 01:20:04,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:20:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21114 backedges. 0 proven. 21114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:04,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:20:04,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2019-09-08 01:20:04,335 INFO L454 AbstractCegarLoop]: Interpolant automaton has 104 states [2019-09-08 01:20:04,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2019-09-08 01:20:04,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2019-09-08 01:20:04,337 INFO L87 Difference]: Start difference. First operand 511 states and 512 transitions. Second operand 104 states. [2019-09-08 01:20:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:20:05,042 INFO L93 Difference]: Finished difference Result 526 states and 528 transitions. [2019-09-08 01:20:05,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2019-09-08 01:20:05,042 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 509 [2019-09-08 01:20:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:20:05,044 INFO L225 Difference]: With dead ends: 526 [2019-09-08 01:20:05,044 INFO L226 Difference]: Without dead ends: 519 [2019-09-08 01:20:05,044 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2019-09-08 01:20:05,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2019-09-08 01:20:05,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 516. [2019-09-08 01:20:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2019-09-08 01:20:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 517 transitions. [2019-09-08 01:20:05,050 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 517 transitions. Word has length 509 [2019-09-08 01:20:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:20:05,051 INFO L475 AbstractCegarLoop]: Abstraction has 516 states and 517 transitions. [2019-09-08 01:20:05,051 INFO L476 AbstractCegarLoop]: Interpolant automaton has 104 states. [2019-09-08 01:20:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 517 transitions. [2019-09-08 01:20:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2019-09-08 01:20:05,053 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:20:05,053 INFO L399 BasicCegarLoop]: trace histogram [94, 93, 93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:20:05,053 INFO L418 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:20:05,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:20:05,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1447541947, now seen corresponding path program 93 times [2019-09-08 01:20:05,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:20:05,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:20:05,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:05,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:20:05,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 21576 backedges. 0 proven. 21576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:09,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:09,091 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:09,103 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:20:10,566 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2019-09-08 01:20:10,566 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:20:10,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 4739 conjuncts, 104 conjunts are in the unsatisfiable core [2019-09-08 01:20:10,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:20:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21576 backedges. 0 proven. 21576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:10,751 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:20:10,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2019-09-08 01:20:10,752 INFO L454 AbstractCegarLoop]: Interpolant automaton has 105 states [2019-09-08 01:20:10,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2019-09-08 01:20:10,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2019-09-08 01:20:10,753 INFO L87 Difference]: Start difference. First operand 516 states and 517 transitions. Second operand 105 states. [2019-09-08 01:20:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:20:11,350 INFO L93 Difference]: Finished difference Result 531 states and 533 transitions. [2019-09-08 01:20:11,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2019-09-08 01:20:11,350 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 514 [2019-09-08 01:20:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:20:11,353 INFO L225 Difference]: With dead ends: 531 [2019-09-08 01:20:11,353 INFO L226 Difference]: Without dead ends: 524 [2019-09-08 01:20:11,354 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2019-09-08 01:20:11,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-09-08 01:20:11,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 521. [2019-09-08 01:20:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2019-09-08 01:20:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 522 transitions. [2019-09-08 01:20:11,360 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 522 transitions. Word has length 514 [2019-09-08 01:20:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:20:11,360 INFO L475 AbstractCegarLoop]: Abstraction has 521 states and 522 transitions. [2019-09-08 01:20:11,360 INFO L476 AbstractCegarLoop]: Interpolant automaton has 105 states. [2019-09-08 01:20:11,360 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 522 transitions. [2019-09-08 01:20:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2019-09-08 01:20:11,363 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:20:11,363 INFO L399 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:20:11,363 INFO L418 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:20:11,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:20:11,364 INFO L82 PathProgramCache]: Analyzing trace with hash -167640217, now seen corresponding path program 94 times [2019-09-08 01:20:11,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:20:11,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:20:11,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:11,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:20:11,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:15,310 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:15,310 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:15,320 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:20:15,983 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:20:15,984 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:20:15,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 4781 conjuncts, 105 conjunts are in the unsatisfiable core [2019-09-08 01:20:16,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:20:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:16,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:20:16,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2019-09-08 01:20:16,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 106 states [2019-09-08 01:20:16,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2019-09-08 01:20:16,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2019-09-08 01:20:16,178 INFO L87 Difference]: Start difference. First operand 521 states and 522 transitions. Second operand 106 states. [2019-09-08 01:20:16,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:20:16,965 INFO L93 Difference]: Finished difference Result 536 states and 538 transitions. [2019-09-08 01:20:16,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2019-09-08 01:20:16,965 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 519 [2019-09-08 01:20:16,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:20:16,967 INFO L225 Difference]: With dead ends: 536 [2019-09-08 01:20:16,967 INFO L226 Difference]: Without dead ends: 529 [2019-09-08 01:20:16,968 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2019-09-08 01:20:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2019-09-08 01:20:16,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 526. [2019-09-08 01:20:16,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-09-08 01:20:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 527 transitions. [2019-09-08 01:20:16,973 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 527 transitions. Word has length 519 [2019-09-08 01:20:16,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:20:16,973 INFO L475 AbstractCegarLoop]: Abstraction has 526 states and 527 transitions. [2019-09-08 01:20:16,973 INFO L476 AbstractCegarLoop]: Interpolant automaton has 106 states. [2019-09-08 01:20:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 527 transitions. [2019-09-08 01:20:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2019-09-08 01:20:16,975 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:20:16,976 INFO L399 BasicCegarLoop]: trace histogram [96, 95, 95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:20:16,976 INFO L418 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:20:16,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:20:16,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1287321541, now seen corresponding path program 95 times [2019-09-08 01:20:16,976 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:20:16,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:20:16,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:16,977 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:20:16,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 22515 backedges. 0 proven. 22515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:21,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:21,012 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:21,025 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:20:22,218 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2019-09-08 01:20:22,219 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:20:22,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 4823 conjuncts, 106 conjunts are in the unsatisfiable core [2019-09-08 01:20:22,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:20:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 22515 backedges. 0 proven. 22515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:22,418 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:20:22,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2019-09-08 01:20:22,419 INFO L454 AbstractCegarLoop]: Interpolant automaton has 107 states [2019-09-08 01:20:22,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2019-09-08 01:20:22,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2019-09-08 01:20:22,421 INFO L87 Difference]: Start difference. First operand 526 states and 527 transitions. Second operand 107 states. [2019-09-08 01:20:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:20:23,200 INFO L93 Difference]: Finished difference Result 541 states and 543 transitions. [2019-09-08 01:20:23,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-09-08 01:20:23,200 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 524 [2019-09-08 01:20:23,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:20:23,202 INFO L225 Difference]: With dead ends: 541 [2019-09-08 01:20:23,203 INFO L226 Difference]: Without dead ends: 534 [2019-09-08 01:20:23,203 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2019-09-08 01:20:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-09-08 01:20:23,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 531. [2019-09-08 01:20:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-09-08 01:20:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 532 transitions. [2019-09-08 01:20:23,209 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 532 transitions. Word has length 524 [2019-09-08 01:20:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:20:23,210 INFO L475 AbstractCegarLoop]: Abstraction has 531 states and 532 transitions. [2019-09-08 01:20:23,210 INFO L476 AbstractCegarLoop]: Interpolant automaton has 107 states. [2019-09-08 01:20:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 532 transitions. [2019-09-08 01:20:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2019-09-08 01:20:23,212 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:20:23,212 INFO L399 BasicCegarLoop]: trace histogram [97, 96, 96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:20:23,212 INFO L418 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:20:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:20:23,213 INFO L82 PathProgramCache]: Analyzing trace with hash 84404199, now seen corresponding path program 96 times [2019-09-08 01:20:23,213 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:20:23,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:20:23,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:23,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:20:23,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 22992 backedges. 0 proven. 22992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:27,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:27,322 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:27,331 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:20:28,861 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2019-09-08 01:20:28,861 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:20:28,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 4865 conjuncts, 107 conjunts are in the unsatisfiable core [2019-09-08 01:20:28,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:20:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 22992 backedges. 0 proven. 22992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:29,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:20:29,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2019-09-08 01:20:29,073 INFO L454 AbstractCegarLoop]: Interpolant automaton has 108 states [2019-09-08 01:20:29,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2019-09-08 01:20:29,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2019-09-08 01:20:29,075 INFO L87 Difference]: Start difference. First operand 531 states and 532 transitions. Second operand 108 states. [2019-09-08 01:20:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:20:29,854 INFO L93 Difference]: Finished difference Result 546 states and 548 transitions. [2019-09-08 01:20:29,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2019-09-08 01:20:29,854 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 529 [2019-09-08 01:20:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:20:29,856 INFO L225 Difference]: With dead ends: 546 [2019-09-08 01:20:29,857 INFO L226 Difference]: Without dead ends: 539 [2019-09-08 01:20:29,857 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2019-09-08 01:20:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-09-08 01:20:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 536. [2019-09-08 01:20:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2019-09-08 01:20:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 537 transitions. [2019-09-08 01:20:29,862 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 537 transitions. Word has length 529 [2019-09-08 01:20:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:20:29,863 INFO L475 AbstractCegarLoop]: Abstraction has 536 states and 537 transitions. [2019-09-08 01:20:29,863 INFO L476 AbstractCegarLoop]: Interpolant automaton has 108 states. [2019-09-08 01:20:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 537 transitions. [2019-09-08 01:20:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2019-09-08 01:20:29,865 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:20:29,865 INFO L399 BasicCegarLoop]: trace histogram [98, 97, 97, 97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:20:29,865 INFO L418 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:20:29,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:20:29,865 INFO L82 PathProgramCache]: Analyzing trace with hash 716829627, now seen corresponding path program 97 times [2019-09-08 01:20:29,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:20:29,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:20:29,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:29,866 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:20:29,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 23474 backedges. 0 proven. 23474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:34,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:34,040 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:34,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:20:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:34,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 4907 conjuncts, 108 conjunts are in the unsatisfiable core [2019-09-08 01:20:34,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:20:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 23474 backedges. 0 proven. 23474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:34,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:20:34,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2019-09-08 01:20:34,932 INFO L454 AbstractCegarLoop]: Interpolant automaton has 109 states [2019-09-08 01:20:34,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2019-09-08 01:20:34,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2019-09-08 01:20:34,933 INFO L87 Difference]: Start difference. First operand 536 states and 537 transitions. Second operand 109 states. [2019-09-08 01:20:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:20:35,585 INFO L93 Difference]: Finished difference Result 551 states and 553 transitions. [2019-09-08 01:20:35,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2019-09-08 01:20:35,586 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 534 [2019-09-08 01:20:35,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:20:35,587 INFO L225 Difference]: With dead ends: 551 [2019-09-08 01:20:35,588 INFO L226 Difference]: Without dead ends: 544 [2019-09-08 01:20:35,588 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2019-09-08 01:20:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-09-08 01:20:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 541. [2019-09-08 01:20:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2019-09-08 01:20:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 542 transitions. [2019-09-08 01:20:35,593 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 542 transitions. Word has length 534 [2019-09-08 01:20:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:20:35,594 INFO L475 AbstractCegarLoop]: Abstraction has 541 states and 542 transitions. [2019-09-08 01:20:35,594 INFO L476 AbstractCegarLoop]: Interpolant automaton has 109 states. [2019-09-08 01:20:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 542 transitions. [2019-09-08 01:20:35,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2019-09-08 01:20:35,597 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:20:35,597 INFO L399 BasicCegarLoop]: trace histogram [99, 98, 98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:20:35,597 INFO L418 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:20:35,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:20:35,598 INFO L82 PathProgramCache]: Analyzing trace with hash -212194201, now seen corresponding path program 98 times [2019-09-08 01:20:35,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:20:35,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:20:35,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:35,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:20:35,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 23961 backedges. 0 proven. 23961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:39,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:39,854 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:39,864 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:20:40,535 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:20:40,535 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:20:40,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 4949 conjuncts, 109 conjunts are in the unsatisfiable core [2019-09-08 01:20:40,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:20:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 23961 backedges. 0 proven. 23961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:40,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:20:40,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2019-09-08 01:20:40,795 INFO L454 AbstractCegarLoop]: Interpolant automaton has 110 states [2019-09-08 01:20:40,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2019-09-08 01:20:40,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2019-09-08 01:20:40,797 INFO L87 Difference]: Start difference. First operand 541 states and 542 transitions. Second operand 110 states. [2019-09-08 01:20:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:20:41,507 INFO L93 Difference]: Finished difference Result 556 states and 558 transitions. [2019-09-08 01:20:41,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2019-09-08 01:20:41,507 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 539 [2019-09-08 01:20:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:20:41,510 INFO L225 Difference]: With dead ends: 556 [2019-09-08 01:20:41,510 INFO L226 Difference]: Without dead ends: 549 [2019-09-08 01:20:41,511 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2019-09-08 01:20:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2019-09-08 01:20:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 546. [2019-09-08 01:20:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-09-08 01:20:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 547 transitions. [2019-09-08 01:20:41,519 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 547 transitions. Word has length 539 [2019-09-08 01:20:41,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:20:41,519 INFO L475 AbstractCegarLoop]: Abstraction has 546 states and 547 transitions. [2019-09-08 01:20:41,519 INFO L476 AbstractCegarLoop]: Interpolant automaton has 110 states. [2019-09-08 01:20:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 547 transitions. [2019-09-08 01:20:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2019-09-08 01:20:41,523 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:20:41,523 INFO L399 BasicCegarLoop]: trace histogram [100, 99, 99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:20:41,523 INFO L418 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:20:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:20:41,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1134460731, now seen corresponding path program 99 times [2019-09-08 01:20:41,524 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:20:41,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:20:41,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:41,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:20:41,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 24453 backedges. 0 proven. 24453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:45,857 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:45,857 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:45,911 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:20:47,501 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2019-09-08 01:20:47,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:20:47,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 4991 conjuncts, 110 conjunts are in the unsatisfiable core [2019-09-08 01:20:47,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:20:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 24453 backedges. 0 proven. 24453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:47,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:20:47,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2019-09-08 01:20:47,706 INFO L454 AbstractCegarLoop]: Interpolant automaton has 111 states [2019-09-08 01:20:47,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2019-09-08 01:20:47,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2019-09-08 01:20:47,708 INFO L87 Difference]: Start difference. First operand 546 states and 547 transitions. Second operand 111 states. [2019-09-08 01:20:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:20:48,657 INFO L93 Difference]: Finished difference Result 561 states and 563 transitions. [2019-09-08 01:20:48,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2019-09-08 01:20:48,658 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 544 [2019-09-08 01:20:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:20:48,660 INFO L225 Difference]: With dead ends: 561 [2019-09-08 01:20:48,660 INFO L226 Difference]: Without dead ends: 554 [2019-09-08 01:20:48,661 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2019-09-08 01:20:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-09-08 01:20:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 551. [2019-09-08 01:20:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2019-09-08 01:20:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 552 transitions. [2019-09-08 01:20:48,669 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 552 transitions. Word has length 544 [2019-09-08 01:20:48,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:20:48,669 INFO L475 AbstractCegarLoop]: Abstraction has 551 states and 552 transitions. [2019-09-08 01:20:48,669 INFO L476 AbstractCegarLoop]: Interpolant automaton has 111 states. [2019-09-08 01:20:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 552 transitions. [2019-09-08 01:20:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2019-09-08 01:20:48,673 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:20:48,673 INFO L399 BasicCegarLoop]: trace histogram [101, 100, 100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:20:48,673 INFO L418 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:20:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:20:48,673 INFO L82 PathProgramCache]: Analyzing trace with hash -721366809, now seen corresponding path program 100 times [2019-09-08 01:20:48,673 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:20:48,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:20:48,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:48,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:20:48,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 24950 backedges. 0 proven. 24950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:53,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:53,106 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:53,116 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:20:53,817 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:20:53,817 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:20:53,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 5033 conjuncts, 111 conjunts are in the unsatisfiable core [2019-09-08 01:20:53,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:20:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 24950 backedges. 0 proven. 24950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:54,026 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:20:54,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2019-09-08 01:20:54,027 INFO L454 AbstractCegarLoop]: Interpolant automaton has 112 states [2019-09-08 01:20:54,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2019-09-08 01:20:54,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2019-09-08 01:20:54,028 INFO L87 Difference]: Start difference. First operand 551 states and 552 transitions. Second operand 112 states. [2019-09-08 01:20:54,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:20:54,657 INFO L93 Difference]: Finished difference Result 566 states and 568 transitions. [2019-09-08 01:20:54,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2019-09-08 01:20:54,657 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 549 [2019-09-08 01:20:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:20:54,660 INFO L225 Difference]: With dead ends: 566 [2019-09-08 01:20:54,660 INFO L226 Difference]: Without dead ends: 559 [2019-09-08 01:20:54,661 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2019-09-08 01:20:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2019-09-08 01:20:54,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 556. [2019-09-08 01:20:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-09-08 01:20:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 557 transitions. [2019-09-08 01:20:54,669 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 557 transitions. Word has length 549 [2019-09-08 01:20:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:20:54,670 INFO L475 AbstractCegarLoop]: Abstraction has 556 states and 557 transitions. [2019-09-08 01:20:54,670 INFO L476 AbstractCegarLoop]: Interpolant automaton has 112 states. [2019-09-08 01:20:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 557 transitions. [2019-09-08 01:20:54,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2019-09-08 01:20:54,673 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:20:54,673 INFO L399 BasicCegarLoop]: trace histogram [102, 101, 101, 101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:20:54,674 INFO L418 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:20:54,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:20:54,674 INFO L82 PathProgramCache]: Analyzing trace with hash 787131067, now seen corresponding path program 101 times [2019-09-08 01:20:54,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:20:54,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:20:54,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:54,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:20:54,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:20:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:20:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 25452 backedges. 0 proven. 25452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:20:59,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:20:59,205 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:20:59,214 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:21:00,539 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2019-09-08 01:21:00,539 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:21:00,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 5075 conjuncts, 112 conjunts are in the unsatisfiable core [2019-09-08 01:21:00,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:21:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 25452 backedges. 0 proven. 25452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:00,752 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:21:00,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2019-09-08 01:21:00,752 INFO L454 AbstractCegarLoop]: Interpolant automaton has 113 states [2019-09-08 01:21:00,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2019-09-08 01:21:00,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2019-09-08 01:21:00,754 INFO L87 Difference]: Start difference. First operand 556 states and 557 transitions. Second operand 113 states. [2019-09-08 01:21:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:21:01,393 INFO L93 Difference]: Finished difference Result 571 states and 573 transitions. [2019-09-08 01:21:01,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2019-09-08 01:21:01,394 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 554 [2019-09-08 01:21:01,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:21:01,395 INFO L225 Difference]: With dead ends: 571 [2019-09-08 01:21:01,395 INFO L226 Difference]: Without dead ends: 564 [2019-09-08 01:21:01,396 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2019-09-08 01:21:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2019-09-08 01:21:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 561. [2019-09-08 01:21:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2019-09-08 01:21:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 562 transitions. [2019-09-08 01:21:01,402 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 562 transitions. Word has length 554 [2019-09-08 01:21:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:21:01,403 INFO L475 AbstractCegarLoop]: Abstraction has 561 states and 562 transitions. [2019-09-08 01:21:01,403 INFO L476 AbstractCegarLoop]: Interpolant automaton has 113 states. [2019-09-08 01:21:01,403 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 562 transitions. [2019-09-08 01:21:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2019-09-08 01:21:01,405 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:21:01,405 INFO L399 BasicCegarLoop]: trace histogram [103, 102, 102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:21:01,405 INFO L418 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:21:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:21:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1409537383, now seen corresponding path program 102 times [2019-09-08 01:21:01,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:21:01,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:21:01,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:01,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:21:01,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 25959 backedges. 0 proven. 25959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:06,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:21:06,110 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:21:06,120 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:21:07,776 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2019-09-08 01:21:07,776 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:21:07,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 5117 conjuncts, 113 conjunts are in the unsatisfiable core [2019-09-08 01:21:07,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:21:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 25959 backedges. 0 proven. 25959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:07,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:21:07,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2019-09-08 01:21:07,998 INFO L454 AbstractCegarLoop]: Interpolant automaton has 114 states [2019-09-08 01:21:07,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2019-09-08 01:21:07,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2019-09-08 01:21:07,999 INFO L87 Difference]: Start difference. First operand 561 states and 562 transitions. Second operand 114 states. [2019-09-08 01:21:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:21:08,660 INFO L93 Difference]: Finished difference Result 576 states and 578 transitions. [2019-09-08 01:21:08,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2019-09-08 01:21:08,661 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 559 [2019-09-08 01:21:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:21:08,662 INFO L225 Difference]: With dead ends: 576 [2019-09-08 01:21:08,662 INFO L226 Difference]: Without dead ends: 569 [2019-09-08 01:21:08,663 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2019-09-08 01:21:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-09-08 01:21:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 566. [2019-09-08 01:21:08,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-09-08 01:21:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 567 transitions. [2019-09-08 01:21:08,670 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 567 transitions. Word has length 559 [2019-09-08 01:21:08,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:21:08,670 INFO L475 AbstractCegarLoop]: Abstraction has 566 states and 567 transitions. [2019-09-08 01:21:08,670 INFO L476 AbstractCegarLoop]: Interpolant automaton has 114 states. [2019-09-08 01:21:08,670 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 567 transitions. [2019-09-08 01:21:08,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2019-09-08 01:21:08,673 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:21:08,673 INFO L399 BasicCegarLoop]: trace histogram [104, 103, 103, 103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:21:08,674 INFO L418 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:21:08,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:21:08,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1201043003, now seen corresponding path program 103 times [2019-09-08 01:21:08,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:21:08,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:21:08,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:08,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:21:08,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 26471 backedges. 0 proven. 26471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:13,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:21:13,460 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:21:13,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:21:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:14,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 5159 conjuncts, 114 conjunts are in the unsatisfiable core [2019-09-08 01:21:14,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:21:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 26471 backedges. 0 proven. 26471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:14,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:21:14,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2019-09-08 01:21:14,383 INFO L454 AbstractCegarLoop]: Interpolant automaton has 115 states [2019-09-08 01:21:14,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2019-09-08 01:21:14,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2019-09-08 01:21:14,385 INFO L87 Difference]: Start difference. First operand 566 states and 567 transitions. Second operand 115 states. [2019-09-08 01:21:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:21:14,925 INFO L93 Difference]: Finished difference Result 581 states and 583 transitions. [2019-09-08 01:21:14,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2019-09-08 01:21:14,925 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 564 [2019-09-08 01:21:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:21:14,926 INFO L225 Difference]: With dead ends: 581 [2019-09-08 01:21:14,926 INFO L226 Difference]: Without dead ends: 574 [2019-09-08 01:21:14,928 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2019-09-08 01:21:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2019-09-08 01:21:14,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 571. [2019-09-08 01:21:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-09-08 01:21:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 572 transitions. [2019-09-08 01:21:14,935 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 572 transitions. Word has length 564 [2019-09-08 01:21:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:21:14,935 INFO L475 AbstractCegarLoop]: Abstraction has 571 states and 572 transitions. [2019-09-08 01:21:14,935 INFO L476 AbstractCegarLoop]: Interpolant automaton has 115 states. [2019-09-08 01:21:14,935 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 572 transitions. [2019-09-08 01:21:14,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2019-09-08 01:21:14,938 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:21:14,938 INFO L399 BasicCegarLoop]: trace histogram [105, 104, 104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:21:14,939 INFO L418 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:21:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:21:14,939 INFO L82 PathProgramCache]: Analyzing trace with hash 812333543, now seen corresponding path program 104 times [2019-09-08 01:21:14,939 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:21:14,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:21:14,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:14,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:21:14,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 26988 backedges. 0 proven. 26988 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:19,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:21:19,792 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:21:19,804 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:21:20,523 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:21:20,524 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:21:20,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 5201 conjuncts, 115 conjunts are in the unsatisfiable core [2019-09-08 01:21:20,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:21:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 26988 backedges. 0 proven. 26988 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:20,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:21:20,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2019-09-08 01:21:20,745 INFO L454 AbstractCegarLoop]: Interpolant automaton has 116 states [2019-09-08 01:21:20,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2019-09-08 01:21:20,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2019-09-08 01:21:20,748 INFO L87 Difference]: Start difference. First operand 571 states and 572 transitions. Second operand 116 states. [2019-09-08 01:21:21,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:21:21,727 INFO L93 Difference]: Finished difference Result 586 states and 588 transitions. [2019-09-08 01:21:21,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2019-09-08 01:21:21,728 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 569 [2019-09-08 01:21:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:21:21,729 INFO L225 Difference]: With dead ends: 586 [2019-09-08 01:21:21,729 INFO L226 Difference]: Without dead ends: 579 [2019-09-08 01:21:21,730 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2019-09-08 01:21:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-09-08 01:21:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 576. [2019-09-08 01:21:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-09-08 01:21:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 577 transitions. [2019-09-08 01:21:21,734 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 577 transitions. Word has length 569 [2019-09-08 01:21:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:21:21,735 INFO L475 AbstractCegarLoop]: Abstraction has 576 states and 577 transitions. [2019-09-08 01:21:21,735 INFO L476 AbstractCegarLoop]: Interpolant automaton has 116 states. [2019-09-08 01:21:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 577 transitions. [2019-09-08 01:21:21,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2019-09-08 01:21:21,737 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:21:21,737 INFO L399 BasicCegarLoop]: trace histogram [106, 105, 105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:21:21,737 INFO L418 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:21:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:21:21,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1835408965, now seen corresponding path program 105 times [2019-09-08 01:21:21,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:21:21,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:21:21,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:21,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:21:21,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 27510 backedges. 0 proven. 27510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:26,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:21:26,608 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:21:26,618 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:21:28,396 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2019-09-08 01:21:28,396 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:21:28,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 5243 conjuncts, 116 conjunts are in the unsatisfiable core [2019-09-08 01:21:28,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:21:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 27510 backedges. 0 proven. 27510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:28,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:21:28,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2019-09-08 01:21:28,700 INFO L454 AbstractCegarLoop]: Interpolant automaton has 117 states [2019-09-08 01:21:28,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2019-09-08 01:21:28,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2019-09-08 01:21:28,701 INFO L87 Difference]: Start difference. First operand 576 states and 577 transitions. Second operand 117 states. [2019-09-08 01:21:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:21:29,630 INFO L93 Difference]: Finished difference Result 591 states and 593 transitions. [2019-09-08 01:21:29,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2019-09-08 01:21:29,630 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 574 [2019-09-08 01:21:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:21:29,632 INFO L225 Difference]: With dead ends: 591 [2019-09-08 01:21:29,632 INFO L226 Difference]: Without dead ends: 584 [2019-09-08 01:21:29,633 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2019-09-08 01:21:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-09-08 01:21:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 581. [2019-09-08 01:21:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-09-08 01:21:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 582 transitions. [2019-09-08 01:21:29,640 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 582 transitions. Word has length 574 [2019-09-08 01:21:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:21:29,640 INFO L475 AbstractCegarLoop]: Abstraction has 581 states and 582 transitions. [2019-09-08 01:21:29,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 117 states. [2019-09-08 01:21:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 582 transitions. [2019-09-08 01:21:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2019-09-08 01:21:29,643 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:21:29,643 INFO L399 BasicCegarLoop]: trace histogram [107, 106, 106, 106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:21:29,644 INFO L418 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:21:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:21:29,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1069613465, now seen corresponding path program 106 times [2019-09-08 01:21:29,644 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:21:29,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:21:29,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:29,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:21:29,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 28037 backedges. 0 proven. 28037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:34,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:21:34,755 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:21:34,774 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:21:35,569 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:21:35,570 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:21:35,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 5285 conjuncts, 117 conjunts are in the unsatisfiable core [2019-09-08 01:21:35,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:21:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 28037 backedges. 0 proven. 28037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:35,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:21:35,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2019-09-08 01:21:35,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 118 states [2019-09-08 01:21:35,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2019-09-08 01:21:35,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2019-09-08 01:21:35,784 INFO L87 Difference]: Start difference. First operand 581 states and 582 transitions. Second operand 118 states. [2019-09-08 01:21:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:21:36,606 INFO L93 Difference]: Finished difference Result 596 states and 598 transitions. [2019-09-08 01:21:36,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2019-09-08 01:21:36,607 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 579 [2019-09-08 01:21:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:21:36,608 INFO L225 Difference]: With dead ends: 596 [2019-09-08 01:21:36,608 INFO L226 Difference]: Without dead ends: 589 [2019-09-08 01:21:36,609 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2019-09-08 01:21:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-09-08 01:21:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 586. [2019-09-08 01:21:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-09-08 01:21:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 587 transitions. [2019-09-08 01:21:36,614 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 587 transitions. Word has length 579 [2019-09-08 01:21:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:21:36,614 INFO L475 AbstractCegarLoop]: Abstraction has 586 states and 587 transitions. [2019-09-08 01:21:36,614 INFO L476 AbstractCegarLoop]: Interpolant automaton has 118 states. [2019-09-08 01:21:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 587 transitions. [2019-09-08 01:21:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2019-09-08 01:21:36,616 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:21:36,616 INFO L399 BasicCegarLoop]: trace histogram [108, 107, 107, 107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:21:36,617 INFO L418 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:21:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:21:36,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1055714619, now seen corresponding path program 107 times [2019-09-08 01:21:36,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:21:36,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:21:36,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:36,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:21:36,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 28569 backedges. 0 proven. 28569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:41,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:21:41,825 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:21:41,834 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:21:43,297 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2019-09-08 01:21:43,297 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:21:43,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 5327 conjuncts, 118 conjunts are in the unsatisfiable core [2019-09-08 01:21:43,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:21:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 28569 backedges. 0 proven. 28569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:43,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:21:43,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2019-09-08 01:21:43,516 INFO L454 AbstractCegarLoop]: Interpolant automaton has 119 states [2019-09-08 01:21:43,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2019-09-08 01:21:43,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2019-09-08 01:21:43,517 INFO L87 Difference]: Start difference. First operand 586 states and 587 transitions. Second operand 119 states. [2019-09-08 01:21:44,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:21:44,608 INFO L93 Difference]: Finished difference Result 601 states and 603 transitions. [2019-09-08 01:21:44,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2019-09-08 01:21:44,608 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 584 [2019-09-08 01:21:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:21:44,610 INFO L225 Difference]: With dead ends: 601 [2019-09-08 01:21:44,610 INFO L226 Difference]: Without dead ends: 594 [2019-09-08 01:21:44,610 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2019-09-08 01:21:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2019-09-08 01:21:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 591. [2019-09-08 01:21:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-09-08 01:21:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 592 transitions. [2019-09-08 01:21:44,615 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 592 transitions. Word has length 584 [2019-09-08 01:21:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:21:44,615 INFO L475 AbstractCegarLoop]: Abstraction has 591 states and 592 transitions. [2019-09-08 01:21:44,615 INFO L476 AbstractCegarLoop]: Interpolant automaton has 119 states. [2019-09-08 01:21:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 592 transitions. [2019-09-08 01:21:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2019-09-08 01:21:44,618 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:21:44,618 INFO L399 BasicCegarLoop]: trace histogram [109, 108, 108, 108, 108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:21:44,618 INFO L418 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:21:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:21:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1871127271, now seen corresponding path program 108 times [2019-09-08 01:21:44,618 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:21:44,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:21:44,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:44,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:21:44,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 29106 backedges. 0 proven. 29106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:49,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:21:49,933 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:21:49,943 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:21:51,739 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2019-09-08 01:21:51,740 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:21:51,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 5369 conjuncts, 119 conjunts are in the unsatisfiable core [2019-09-08 01:21:51,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:21:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 29106 backedges. 0 proven. 29106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:51,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:21:51,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2019-09-08 01:21:51,960 INFO L454 AbstractCegarLoop]: Interpolant automaton has 120 states [2019-09-08 01:21:51,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2019-09-08 01:21:51,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2019-09-08 01:21:51,961 INFO L87 Difference]: Start difference. First operand 591 states and 592 transitions. Second operand 120 states. [2019-09-08 01:21:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:21:52,882 INFO L93 Difference]: Finished difference Result 606 states and 608 transitions. [2019-09-08 01:21:52,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2019-09-08 01:21:52,882 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 589 [2019-09-08 01:21:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:21:52,883 INFO L225 Difference]: With dead ends: 606 [2019-09-08 01:21:52,883 INFO L226 Difference]: Without dead ends: 599 [2019-09-08 01:21:52,884 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2019-09-08 01:21:52,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-09-08 01:21:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 596. [2019-09-08 01:21:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2019-09-08 01:21:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 597 transitions. [2019-09-08 01:21:52,889 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 597 transitions. Word has length 589 [2019-09-08 01:21:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:21:52,889 INFO L475 AbstractCegarLoop]: Abstraction has 596 states and 597 transitions. [2019-09-08 01:21:52,889 INFO L476 AbstractCegarLoop]: Interpolant automaton has 120 states. [2019-09-08 01:21:52,889 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 597 transitions. [2019-09-08 01:21:52,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2019-09-08 01:21:52,892 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:21:52,892 INFO L399 BasicCegarLoop]: trace histogram [110, 109, 109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:21:52,892 INFO L418 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:21:52,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:21:52,892 INFO L82 PathProgramCache]: Analyzing trace with hash 629643451, now seen corresponding path program 109 times [2019-09-08 01:21:52,892 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:21:52,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:21:52,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:52,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:21:52,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:21:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 29648 backedges. 0 proven. 29648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:58,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:21:58,133 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:21:58,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:21:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:21:58,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 5411 conjuncts, 120 conjunts are in the unsatisfiable core [2019-09-08 01:21:58,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:21:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 29648 backedges. 0 proven. 29648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:21:59,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:21:59,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2019-09-08 01:21:59,129 INFO L454 AbstractCegarLoop]: Interpolant automaton has 121 states [2019-09-08 01:21:59,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2019-09-08 01:21:59,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2019-09-08 01:21:59,130 INFO L87 Difference]: Start difference. First operand 596 states and 597 transitions. Second operand 121 states. [2019-09-08 01:22:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:00,330 INFO L93 Difference]: Finished difference Result 611 states and 613 transitions. [2019-09-08 01:22:00,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2019-09-08 01:22:00,331 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 594 [2019-09-08 01:22:00,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:00,332 INFO L225 Difference]: With dead ends: 611 [2019-09-08 01:22:00,332 INFO L226 Difference]: Without dead ends: 604 [2019-09-08 01:22:00,333 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2019-09-08 01:22:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2019-09-08 01:22:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 601. [2019-09-08 01:22:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2019-09-08 01:22:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 602 transitions. [2019-09-08 01:22:00,337 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 602 transitions. Word has length 594 [2019-09-08 01:22:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:00,337 INFO L475 AbstractCegarLoop]: Abstraction has 601 states and 602 transitions. [2019-09-08 01:22:00,337 INFO L476 AbstractCegarLoop]: Interpolant automaton has 121 states. [2019-09-08 01:22:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 602 transitions. [2019-09-08 01:22:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2019-09-08 01:22:00,340 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:00,340 INFO L399 BasicCegarLoop]: trace histogram [111, 110, 110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:22:00,340 INFO L418 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:00,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1078699879, now seen corresponding path program 110 times [2019-09-08 01:22:00,340 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:00,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:00,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:00,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:22:00,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 30195 backedges. 0 proven. 30195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:05,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:22:05,577 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:22:05,587 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:22:06,348 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:22:06,348 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:22:06,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 5453 conjuncts, 121 conjunts are in the unsatisfiable core [2019-09-08 01:22:06,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:22:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 30195 backedges. 0 proven. 30195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:06,574 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:22:06,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2019-09-08 01:22:06,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 122 states [2019-09-08 01:22:06,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2019-09-08 01:22:06,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2019-09-08 01:22:06,576 INFO L87 Difference]: Start difference. First operand 601 states and 602 transitions. Second operand 122 states. [2019-09-08 01:22:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:07,568 INFO L93 Difference]: Finished difference Result 616 states and 618 transitions. [2019-09-08 01:22:07,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2019-09-08 01:22:07,569 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 599 [2019-09-08 01:22:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:07,570 INFO L225 Difference]: With dead ends: 616 [2019-09-08 01:22:07,570 INFO L226 Difference]: Without dead ends: 609 [2019-09-08 01:22:07,571 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2019-09-08 01:22:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-09-08 01:22:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 606. [2019-09-08 01:22:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2019-09-08 01:22:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 607 transitions. [2019-09-08 01:22:07,576 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 607 transitions. Word has length 599 [2019-09-08 01:22:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:07,576 INFO L475 AbstractCegarLoop]: Abstraction has 606 states and 607 transitions. [2019-09-08 01:22:07,576 INFO L476 AbstractCegarLoop]: Interpolant automaton has 122 states. [2019-09-08 01:22:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 607 transitions. [2019-09-08 01:22:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2019-09-08 01:22:07,579 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:07,579 INFO L399 BasicCegarLoop]: trace histogram [112, 111, 111, 111, 111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:22:07,579 INFO L418 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:07,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:07,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1231152187, now seen corresponding path program 111 times [2019-09-08 01:22:07,579 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:07,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:07,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:07,580 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:22:07,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30747 backedges. 0 proven. 30747 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:13,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:22:13,064 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:22:13,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:22:14,946 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2019-09-08 01:22:14,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:22:14,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 5495 conjuncts, 122 conjunts are in the unsatisfiable core [2019-09-08 01:22:14,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:22:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30747 backedges. 0 proven. 30747 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:15,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:22:15,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2019-09-08 01:22:15,179 INFO L454 AbstractCegarLoop]: Interpolant automaton has 123 states [2019-09-08 01:22:15,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2019-09-08 01:22:15,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2019-09-08 01:22:15,180 INFO L87 Difference]: Start difference. First operand 606 states and 607 transitions. Second operand 123 states. [2019-09-08 01:22:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:16,299 INFO L93 Difference]: Finished difference Result 621 states and 623 transitions. [2019-09-08 01:22:16,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2019-09-08 01:22:16,300 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 604 [2019-09-08 01:22:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:16,301 INFO L225 Difference]: With dead ends: 621 [2019-09-08 01:22:16,301 INFO L226 Difference]: Without dead ends: 614 [2019-09-08 01:22:16,302 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2019-09-08 01:22:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-09-08 01:22:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 611. [2019-09-08 01:22:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-09-08 01:22:16,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 612 transitions. [2019-09-08 01:22:16,307 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 612 transitions. Word has length 604 [2019-09-08 01:22:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:16,308 INFO L475 AbstractCegarLoop]: Abstraction has 611 states and 612 transitions. [2019-09-08 01:22:16,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 123 states. [2019-09-08 01:22:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 612 transitions. [2019-09-08 01:22:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2019-09-08 01:22:16,310 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:16,310 INFO L399 BasicCegarLoop]: trace histogram [113, 112, 112, 112, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:22:16,310 INFO L418 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:16,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:16,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1251249127, now seen corresponding path program 112 times [2019-09-08 01:22:16,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:16,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:16,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:16,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:22:16,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 31304 backedges. 0 proven. 31304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:21,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:22:21,724 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:22:21,734 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:22:22,500 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:22:22,500 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:22:22,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 5537 conjuncts, 123 conjunts are in the unsatisfiable core [2019-09-08 01:22:22,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:22:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 31304 backedges. 0 proven. 31304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:22,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:22:22,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2019-09-08 01:22:22,749 INFO L454 AbstractCegarLoop]: Interpolant automaton has 124 states [2019-09-08 01:22:22,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2019-09-08 01:22:22,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2019-09-08 01:22:22,752 INFO L87 Difference]: Start difference. First operand 611 states and 612 transitions. Second operand 124 states. [2019-09-08 01:22:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:23,724 INFO L93 Difference]: Finished difference Result 626 states and 628 transitions. [2019-09-08 01:22:23,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2019-09-08 01:22:23,724 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 609 [2019-09-08 01:22:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:23,726 INFO L225 Difference]: With dead ends: 626 [2019-09-08 01:22:23,726 INFO L226 Difference]: Without dead ends: 619 [2019-09-08 01:22:23,727 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2019-09-08 01:22:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-09-08 01:22:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 616. [2019-09-08 01:22:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-09-08 01:22:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 617 transitions. [2019-09-08 01:22:23,733 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 617 transitions. Word has length 609 [2019-09-08 01:22:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:23,734 INFO L475 AbstractCegarLoop]: Abstraction has 616 states and 617 transitions. [2019-09-08 01:22:23,734 INFO L476 AbstractCegarLoop]: Interpolant automaton has 124 states. [2019-09-08 01:22:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 617 transitions. [2019-09-08 01:22:23,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2019-09-08 01:22:23,738 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:23,738 INFO L399 BasicCegarLoop]: trace histogram [114, 113, 113, 113, 113, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:22:23,738 INFO L418 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:23,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:23,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1467207611, now seen corresponding path program 113 times [2019-09-08 01:22:23,739 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:23,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:23,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:23,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:22:23,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 31866 backedges. 0 proven. 31866 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:29,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:22:29,211 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:22:29,221 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:22:30,862 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2019-09-08 01:22:30,862 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:22:30,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 5579 conjuncts, 124 conjunts are in the unsatisfiable core [2019-09-08 01:22:30,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:22:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 31866 backedges. 0 proven. 31866 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:31,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:22:31,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2019-09-08 01:22:31,100 INFO L454 AbstractCegarLoop]: Interpolant automaton has 125 states [2019-09-08 01:22:31,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2019-09-08 01:22:31,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2019-09-08 01:22:31,102 INFO L87 Difference]: Start difference. First operand 616 states and 617 transitions. Second operand 125 states. [2019-09-08 01:22:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:32,341 INFO L93 Difference]: Finished difference Result 631 states and 633 transitions. [2019-09-08 01:22:32,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2019-09-08 01:22:32,341 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 614 [2019-09-08 01:22:32,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:32,343 INFO L225 Difference]: With dead ends: 631 [2019-09-08 01:22:32,343 INFO L226 Difference]: Without dead ends: 624 [2019-09-08 01:22:32,344 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2019-09-08 01:22:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-09-08 01:22:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 621. [2019-09-08 01:22:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-09-08 01:22:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 622 transitions. [2019-09-08 01:22:32,351 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 622 transitions. Word has length 614 [2019-09-08 01:22:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:32,352 INFO L475 AbstractCegarLoop]: Abstraction has 621 states and 622 transitions. [2019-09-08 01:22:32,352 INFO L476 AbstractCegarLoop]: Interpolant automaton has 125 states. [2019-09-08 01:22:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 622 transitions. [2019-09-08 01:22:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2019-09-08 01:22:32,355 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:32,356 INFO L399 BasicCegarLoop]: trace histogram [115, 114, 114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:22:32,356 INFO L418 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:32,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:32,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1013567591, now seen corresponding path program 114 times [2019-09-08 01:22:32,356 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:32,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:32,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:32,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:22:32,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 32433 backedges. 0 proven. 32433 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:38,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:22:38,126 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:22:38,137 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:22:40,121 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2019-09-08 01:22:40,122 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:22:40,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 5621 conjuncts, 125 conjunts are in the unsatisfiable core [2019-09-08 01:22:40,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:22:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 32433 backedges. 0 proven. 32433 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:40,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:22:40,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2019-09-08 01:22:40,363 INFO L454 AbstractCegarLoop]: Interpolant automaton has 126 states [2019-09-08 01:22:40,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2019-09-08 01:22:40,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2019-09-08 01:22:40,364 INFO L87 Difference]: Start difference. First operand 621 states and 622 transitions. Second operand 126 states. [2019-09-08 01:22:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:41,364 INFO L93 Difference]: Finished difference Result 636 states and 638 transitions. [2019-09-08 01:22:41,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2019-09-08 01:22:41,365 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 619 [2019-09-08 01:22:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:41,366 INFO L225 Difference]: With dead ends: 636 [2019-09-08 01:22:41,366 INFO L226 Difference]: Without dead ends: 629 [2019-09-08 01:22:41,367 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2019-09-08 01:22:41,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-09-08 01:22:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 626. [2019-09-08 01:22:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-09-08 01:22:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 627 transitions. [2019-09-08 01:22:41,371 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 627 transitions. Word has length 619 [2019-09-08 01:22:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:41,372 INFO L475 AbstractCegarLoop]: Abstraction has 626 states and 627 transitions. [2019-09-08 01:22:41,372 INFO L476 AbstractCegarLoop]: Interpolant automaton has 126 states. [2019-09-08 01:22:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 627 transitions. [2019-09-08 01:22:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2019-09-08 01:22:41,374 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:41,374 INFO L399 BasicCegarLoop]: trace histogram [116, 115, 115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:22:41,374 INFO L418 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:41,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:41,374 INFO L82 PathProgramCache]: Analyzing trace with hash 649419579, now seen corresponding path program 115 times [2019-09-08 01:22:41,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:41,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:41,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:41,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:22:41,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 33005 backedges. 0 proven. 33005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:47,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:22:47,021 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:22:47,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:22:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:47,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 5663 conjuncts, 126 conjunts are in the unsatisfiable core [2019-09-08 01:22:47,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:22:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 33005 backedges. 0 proven. 33005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:48,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:22:48,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2019-09-08 01:22:48,122 INFO L454 AbstractCegarLoop]: Interpolant automaton has 127 states [2019-09-08 01:22:48,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2019-09-08 01:22:48,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2019-09-08 01:22:48,123 INFO L87 Difference]: Start difference. First operand 626 states and 627 transitions. Second operand 127 states. [2019-09-08 01:22:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:49,153 INFO L93 Difference]: Finished difference Result 641 states and 643 transitions. [2019-09-08 01:22:49,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2019-09-08 01:22:49,153 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 624 [2019-09-08 01:22:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:49,155 INFO L225 Difference]: With dead ends: 641 [2019-09-08 01:22:49,155 INFO L226 Difference]: Without dead ends: 634 [2019-09-08 01:22:49,156 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2019-09-08 01:22:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-09-08 01:22:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 631. [2019-09-08 01:22:49,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-09-08 01:22:49,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 632 transitions. [2019-09-08 01:22:49,164 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 632 transitions. Word has length 624 [2019-09-08 01:22:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:49,164 INFO L475 AbstractCegarLoop]: Abstraction has 631 states and 632 transitions. [2019-09-08 01:22:49,165 INFO L476 AbstractCegarLoop]: Interpolant automaton has 127 states. [2019-09-08 01:22:49,165 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 632 transitions. [2019-09-08 01:22:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2019-09-08 01:22:49,169 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:49,169 INFO L399 BasicCegarLoop]: trace histogram [117, 116, 116, 116, 116, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:22:49,169 INFO L418 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:49,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:49,170 INFO L82 PathProgramCache]: Analyzing trace with hash -640453401, now seen corresponding path program 116 times [2019-09-08 01:22:49,170 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:49,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:49,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:49,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:22:49,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:22:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 33582 backedges. 0 proven. 33582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:54,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:22:54,990 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:22:55,000 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:22:55,795 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:22:55,795 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:22:55,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 5705 conjuncts, 127 conjunts are in the unsatisfiable core [2019-09-08 01:22:55,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:22:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 33582 backedges. 0 proven. 33582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:22:56,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:22:56,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2019-09-08 01:22:56,039 INFO L454 AbstractCegarLoop]: Interpolant automaton has 128 states [2019-09-08 01:22:56,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2019-09-08 01:22:56,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2019-09-08 01:22:56,041 INFO L87 Difference]: Start difference. First operand 631 states and 632 transitions. Second operand 128 states. [2019-09-08 01:22:57,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:22:57,460 INFO L93 Difference]: Finished difference Result 646 states and 648 transitions. [2019-09-08 01:22:57,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2019-09-08 01:22:57,460 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 629 [2019-09-08 01:22:57,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:22:57,461 INFO L225 Difference]: With dead ends: 646 [2019-09-08 01:22:57,462 INFO L226 Difference]: Without dead ends: 639 [2019-09-08 01:22:57,463 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2019-09-08 01:22:57,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-09-08 01:22:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 636. [2019-09-08 01:22:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-09-08 01:22:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 637 transitions. [2019-09-08 01:22:57,470 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 637 transitions. Word has length 629 [2019-09-08 01:22:57,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:22:57,471 INFO L475 AbstractCegarLoop]: Abstraction has 636 states and 637 transitions. [2019-09-08 01:22:57,471 INFO L476 AbstractCegarLoop]: Interpolant automaton has 128 states. [2019-09-08 01:22:57,471 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 637 transitions. [2019-09-08 01:22:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2019-09-08 01:22:57,475 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:22:57,475 INFO L399 BasicCegarLoop]: trace histogram [118, 117, 117, 117, 117, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:22:57,475 INFO L418 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:22:57,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:22:57,476 INFO L82 PathProgramCache]: Analyzing trace with hash 941524667, now seen corresponding path program 117 times [2019-09-08 01:22:57,476 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:22:57,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:22:57,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:57,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:22:57,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:22:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 34164 backedges. 0 proven. 34164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:03,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:23:03,538 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:23:03,548 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:23:05,612 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2019-09-08 01:23:05,612 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:23:05,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 5747 conjuncts, 128 conjunts are in the unsatisfiable core [2019-09-08 01:23:05,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:23:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 34164 backedges. 0 proven. 34164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:05,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:23:05,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2019-09-08 01:23:05,865 INFO L454 AbstractCegarLoop]: Interpolant automaton has 129 states [2019-09-08 01:23:05,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2019-09-08 01:23:05,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2019-09-08 01:23:05,866 INFO L87 Difference]: Start difference. First operand 636 states and 637 transitions. Second operand 129 states. [2019-09-08 01:23:06,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:06,722 INFO L93 Difference]: Finished difference Result 651 states and 653 transitions. [2019-09-08 01:23:06,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2019-09-08 01:23:06,722 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 634 [2019-09-08 01:23:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:06,724 INFO L225 Difference]: With dead ends: 651 [2019-09-08 01:23:06,724 INFO L226 Difference]: Without dead ends: 644 [2019-09-08 01:23:06,725 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2019-09-08 01:23:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-09-08 01:23:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 641. [2019-09-08 01:23:06,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2019-09-08 01:23:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 642 transitions. [2019-09-08 01:23:06,731 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 642 transitions. Word has length 634 [2019-09-08 01:23:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:06,731 INFO L475 AbstractCegarLoop]: Abstraction has 641 states and 642 transitions. [2019-09-08 01:23:06,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 129 states. [2019-09-08 01:23:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 642 transitions. [2019-09-08 01:23:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2019-09-08 01:23:06,734 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:06,734 INFO L399 BasicCegarLoop]: trace histogram [119, 118, 118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:06,734 INFO L418 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:06,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:06,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2094627175, now seen corresponding path program 118 times [2019-09-08 01:23:06,734 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:06,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:06,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:06,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:23:06,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 34751 backedges. 0 proven. 34751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:12,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:23:12,675 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:23:12,685 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:23:13,515 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:23:13,515 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:23:13,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 5789 conjuncts, 129 conjunts are in the unsatisfiable core [2019-09-08 01:23:13,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:23:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 34751 backedges. 0 proven. 34751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:13,769 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:23:13,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2019-09-08 01:23:13,770 INFO L454 AbstractCegarLoop]: Interpolant automaton has 130 states [2019-09-08 01:23:13,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2019-09-08 01:23:13,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2019-09-08 01:23:13,772 INFO L87 Difference]: Start difference. First operand 641 states and 642 transitions. Second operand 130 states. [2019-09-08 01:23:14,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:14,453 INFO L93 Difference]: Finished difference Result 656 states and 658 transitions. [2019-09-08 01:23:14,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2019-09-08 01:23:14,454 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 639 [2019-09-08 01:23:14,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:14,455 INFO L225 Difference]: With dead ends: 656 [2019-09-08 01:23:14,455 INFO L226 Difference]: Without dead ends: 649 [2019-09-08 01:23:14,457 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2019-09-08 01:23:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-09-08 01:23:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 646. [2019-09-08 01:23:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2019-09-08 01:23:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 647 transitions. [2019-09-08 01:23:14,465 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 647 transitions. Word has length 639 [2019-09-08 01:23:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:14,465 INFO L475 AbstractCegarLoop]: Abstraction has 646 states and 647 transitions. [2019-09-08 01:23:14,465 INFO L476 AbstractCegarLoop]: Interpolant automaton has 130 states. [2019-09-08 01:23:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 647 transitions. [2019-09-08 01:23:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2019-09-08 01:23:14,469 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:14,469 INFO L399 BasicCegarLoop]: trace histogram [120, 119, 119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:14,470 INFO L418 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:14,470 INFO L82 PathProgramCache]: Analyzing trace with hash 916935227, now seen corresponding path program 119 times [2019-09-08 01:23:14,470 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:14,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:14,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:14,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:23:14,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 35343 backedges. 0 proven. 35343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:20,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:23:20,676 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:23:20,686 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:23:22,435 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2019-09-08 01:23:22,436 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:23:22,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 5831 conjuncts, 130 conjunts are in the unsatisfiable core [2019-09-08 01:23:22,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:23:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 35343 backedges. 0 proven. 35343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:22,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:23:22,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2019-09-08 01:23:22,694 INFO L454 AbstractCegarLoop]: Interpolant automaton has 131 states [2019-09-08 01:23:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2019-09-08 01:23:22,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2019-09-08 01:23:22,696 INFO L87 Difference]: Start difference. First operand 646 states and 647 transitions. Second operand 131 states. [2019-09-08 01:23:23,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:23,471 INFO L93 Difference]: Finished difference Result 661 states and 663 transitions. [2019-09-08 01:23:23,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2019-09-08 01:23:23,471 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 644 [2019-09-08 01:23:23,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:23,473 INFO L225 Difference]: With dead ends: 661 [2019-09-08 01:23:23,473 INFO L226 Difference]: Without dead ends: 654 [2019-09-08 01:23:23,474 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8515, Invalid=8515, Unknown=0, NotChecked=0, Total=17030 [2019-09-08 01:23:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-09-08 01:23:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 651. [2019-09-08 01:23:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-09-08 01:23:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 652 transitions. [2019-09-08 01:23:23,482 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 652 transitions. Word has length 644 [2019-09-08 01:23:23,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:23,483 INFO L475 AbstractCegarLoop]: Abstraction has 651 states and 652 transitions. [2019-09-08 01:23:23,483 INFO L476 AbstractCegarLoop]: Interpolant automaton has 131 states. [2019-09-08 01:23:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 652 transitions. [2019-09-08 01:23:23,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2019-09-08 01:23:23,486 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:23,487 INFO L399 BasicCegarLoop]: trace histogram [121, 120, 120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:23,487 INFO L418 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:23,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1786520089, now seen corresponding path program 120 times [2019-09-08 01:23:23,488 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:23,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:23,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:23,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:23:23,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 35940 backedges. 0 proven. 35940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:29,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:23:29,634 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:23:29,643 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:23:31,792 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2019-09-08 01:23:31,792 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:23:31,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 5873 conjuncts, 131 conjunts are in the unsatisfiable core [2019-09-08 01:23:31,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:23:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 35940 backedges. 0 proven. 35940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:32,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:23:32,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2019-09-08 01:23:32,056 INFO L454 AbstractCegarLoop]: Interpolant automaton has 132 states [2019-09-08 01:23:32,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2019-09-08 01:23:32,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2019-09-08 01:23:32,057 INFO L87 Difference]: Start difference. First operand 651 states and 652 transitions. Second operand 132 states. [2019-09-08 01:23:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:32,938 INFO L93 Difference]: Finished difference Result 666 states and 668 transitions. [2019-09-08 01:23:32,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2019-09-08 01:23:32,938 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 649 [2019-09-08 01:23:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:32,940 INFO L225 Difference]: With dead ends: 666 [2019-09-08 01:23:32,940 INFO L226 Difference]: Without dead ends: 659 [2019-09-08 01:23:32,941 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8646, Invalid=8646, Unknown=0, NotChecked=0, Total=17292 [2019-09-08 01:23:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-09-08 01:23:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 656. [2019-09-08 01:23:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-09-08 01:23:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 657 transitions. [2019-09-08 01:23:32,948 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 657 transitions. Word has length 649 [2019-09-08 01:23:32,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:32,949 INFO L475 AbstractCegarLoop]: Abstraction has 656 states and 657 transitions. [2019-09-08 01:23:32,949 INFO L476 AbstractCegarLoop]: Interpolant automaton has 132 states. [2019-09-08 01:23:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 657 transitions. [2019-09-08 01:23:32,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2019-09-08 01:23:32,953 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:32,953 INFO L399 BasicCegarLoop]: trace histogram [122, 121, 121, 121, 121, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:32,953 INFO L418 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:32,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2001190331, now seen corresponding path program 121 times [2019-09-08 01:23:32,954 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:32,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:32,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:32,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:23:32,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 36542 backedges. 0 proven. 36542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:39,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:23:39,247 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:23:39,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:40,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 5915 conjuncts, 132 conjunts are in the unsatisfiable core [2019-09-08 01:23:40,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:23:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 36542 backedges. 0 proven. 36542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:40,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:23:40,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2019-09-08 01:23:40,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 133 states [2019-09-08 01:23:40,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2019-09-08 01:23:40,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2019-09-08 01:23:40,361 INFO L87 Difference]: Start difference. First operand 656 states and 657 transitions. Second operand 133 states. [2019-09-08 01:23:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:41,850 INFO L93 Difference]: Finished difference Result 671 states and 673 transitions. [2019-09-08 01:23:41,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2019-09-08 01:23:41,850 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 654 [2019-09-08 01:23:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:41,853 INFO L225 Difference]: With dead ends: 671 [2019-09-08 01:23:41,853 INFO L226 Difference]: Without dead ends: 664 [2019-09-08 01:23:41,854 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2019-09-08 01:23:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2019-09-08 01:23:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 661. [2019-09-08 01:23:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2019-09-08 01:23:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 662 transitions. [2019-09-08 01:23:41,862 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 662 transitions. Word has length 654 [2019-09-08 01:23:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:41,863 INFO L475 AbstractCegarLoop]: Abstraction has 661 states and 662 transitions. [2019-09-08 01:23:41,863 INFO L476 AbstractCegarLoop]: Interpolant automaton has 133 states. [2019-09-08 01:23:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 662 transitions. [2019-09-08 01:23:41,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2019-09-08 01:23:41,867 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:41,867 INFO L399 BasicCegarLoop]: trace histogram [123, 122, 122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:41,867 INFO L418 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:41,868 INFO L82 PathProgramCache]: Analyzing trace with hash 702194279, now seen corresponding path program 122 times [2019-09-08 01:23:41,868 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:41,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:41,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:41,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 37149 backedges. 0 proven. 37149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:48,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:23:48,389 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:23:48,399 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:23:49,206 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:23:49,207 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:23:49,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 5957 conjuncts, 133 conjunts are in the unsatisfiable core [2019-09-08 01:23:49,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:23:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 37149 backedges. 0 proven. 37149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:49,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:23:49,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2019-09-08 01:23:49,474 INFO L454 AbstractCegarLoop]: Interpolant automaton has 134 states [2019-09-08 01:23:49,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2019-09-08 01:23:49,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2019-09-08 01:23:49,475 INFO L87 Difference]: Start difference. First operand 661 states and 662 transitions. Second operand 134 states. [2019-09-08 01:23:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:50,816 INFO L93 Difference]: Finished difference Result 676 states and 678 transitions. [2019-09-08 01:23:50,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2019-09-08 01:23:50,816 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 659 [2019-09-08 01:23:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:50,818 INFO L225 Difference]: With dead ends: 676 [2019-09-08 01:23:50,818 INFO L226 Difference]: Without dead ends: 669 [2019-09-08 01:23:50,818 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=8911, Invalid=8911, Unknown=0, NotChecked=0, Total=17822 [2019-09-08 01:23:50,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2019-09-08 01:23:50,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 666. [2019-09-08 01:23:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-09-08 01:23:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 667 transitions. [2019-09-08 01:23:50,826 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 667 transitions. Word has length 659 [2019-09-08 01:23:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:50,826 INFO L475 AbstractCegarLoop]: Abstraction has 666 states and 667 transitions. [2019-09-08 01:23:50,826 INFO L476 AbstractCegarLoop]: Interpolant automaton has 134 states. [2019-09-08 01:23:50,826 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 667 transitions. [2019-09-08 01:23:50,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2019-09-08 01:23:50,830 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:50,831 INFO L399 BasicCegarLoop]: trace histogram [124, 123, 123, 123, 123, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:50,831 INFO L418 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:50,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:50,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2029504827, now seen corresponding path program 123 times [2019-09-08 01:23:50,831 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:50,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:50,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:50,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:23:50,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 37761 backedges. 0 proven. 37761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:57,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:23:57,302 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:23:57,312 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:23:59,533 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 124 check-sat command(s) [2019-09-08 01:23:59,534 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:23:59,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 5999 conjuncts, 134 conjunts are in the unsatisfiable core [2019-09-08 01:23:59,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:23:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 37761 backedges. 0 proven. 37761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:59,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:23:59,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2019-09-08 01:23:59,811 INFO L454 AbstractCegarLoop]: Interpolant automaton has 135 states [2019-09-08 01:23:59,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2019-09-08 01:23:59,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2019-09-08 01:23:59,813 INFO L87 Difference]: Start difference. First operand 666 states and 667 transitions. Second operand 135 states. [2019-09-08 01:24:00,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:24:00,925 INFO L93 Difference]: Finished difference Result 681 states and 683 transitions. [2019-09-08 01:24:00,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2019-09-08 01:24:00,925 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 664 [2019-09-08 01:24:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:24:00,927 INFO L225 Difference]: With dead ends: 681 [2019-09-08 01:24:00,927 INFO L226 Difference]: Without dead ends: 674 [2019-09-08 01:24:00,928 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=9045, Invalid=9045, Unknown=0, NotChecked=0, Total=18090 [2019-09-08 01:24:00,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-09-08 01:24:00,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 671. [2019-09-08 01:24:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2019-09-08 01:24:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 672 transitions. [2019-09-08 01:24:00,933 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 672 transitions. Word has length 664 [2019-09-08 01:24:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:24:00,933 INFO L475 AbstractCegarLoop]: Abstraction has 671 states and 672 transitions. [2019-09-08 01:24:00,933 INFO L476 AbstractCegarLoop]: Interpolant automaton has 135 states. [2019-09-08 01:24:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 672 transitions. [2019-09-08 01:24:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2019-09-08 01:24:00,936 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:24:00,936 INFO L399 BasicCegarLoop]: trace histogram [125, 124, 124, 124, 124, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:24:00,936 INFO L418 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:24:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:24:00,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1441122023, now seen corresponding path program 124 times [2019-09-08 01:24:00,937 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:24:00,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:24:00,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:00,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:24:00,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:24:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 38378 backedges. 0 proven. 38378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:07,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:24:07,853 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:24:07,863 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:24:08,708 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:24:08,709 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:24:08,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 6041 conjuncts, 135 conjunts are in the unsatisfiable core [2019-09-08 01:24:08,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:24:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 38378 backedges. 0 proven. 38378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:08,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:24:08,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2019-09-08 01:24:08,985 INFO L454 AbstractCegarLoop]: Interpolant automaton has 136 states [2019-09-08 01:24:08,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2019-09-08 01:24:08,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2019-09-08 01:24:08,987 INFO L87 Difference]: Start difference. First operand 671 states and 672 transitions. Second operand 136 states. [2019-09-08 01:24:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:24:10,604 INFO L93 Difference]: Finished difference Result 686 states and 688 transitions. [2019-09-08 01:24:10,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2019-09-08 01:24:10,604 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 669 [2019-09-08 01:24:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:24:10,605 INFO L225 Difference]: With dead ends: 686 [2019-09-08 01:24:10,605 INFO L226 Difference]: Without dead ends: 679 [2019-09-08 01:24:10,606 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9180, Invalid=9180, Unknown=0, NotChecked=0, Total=18360 [2019-09-08 01:24:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-09-08 01:24:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 676. [2019-09-08 01:24:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2019-09-08 01:24:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 677 transitions. [2019-09-08 01:24:10,611 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 677 transitions. Word has length 669 [2019-09-08 01:24:10,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:24:10,611 INFO L475 AbstractCegarLoop]: Abstraction has 676 states and 677 transitions. [2019-09-08 01:24:10,611 INFO L476 AbstractCegarLoop]: Interpolant automaton has 136 states. [2019-09-08 01:24:10,611 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 677 transitions. [2019-09-08 01:24:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2019-09-08 01:24:10,614 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:24:10,614 INFO L399 BasicCegarLoop]: trace histogram [126, 125, 125, 125, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:24:10,614 INFO L418 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:24:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:24:10,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1689220283, now seen corresponding path program 125 times [2019-09-08 01:24:10,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:24:10,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:24:10,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:10,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:24:10,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:24:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 39000 backedges. 0 proven. 39000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:17,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:24:17,134 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:24:17,144 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:24:19,009 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2019-09-08 01:24:19,009 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:24:19,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 6083 conjuncts, 136 conjunts are in the unsatisfiable core [2019-09-08 01:24:19,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:24:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 39000 backedges. 0 proven. 39000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:19,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:24:19,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2019-09-08 01:24:19,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 137 states [2019-09-08 01:24:19,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2019-09-08 01:24:19,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2019-09-08 01:24:19,292 INFO L87 Difference]: Start difference. First operand 676 states and 677 transitions. Second operand 137 states. [2019-09-08 01:24:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:24:20,993 INFO L93 Difference]: Finished difference Result 691 states and 693 transitions. [2019-09-08 01:24:20,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2019-09-08 01:24:20,994 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 674 [2019-09-08 01:24:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:24:20,995 INFO L225 Difference]: With dead ends: 691 [2019-09-08 01:24:20,995 INFO L226 Difference]: Without dead ends: 684 [2019-09-08 01:24:20,996 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=9316, Invalid=9316, Unknown=0, NotChecked=0, Total=18632 [2019-09-08 01:24:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2019-09-08 01:24:21,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 681. [2019-09-08 01:24:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2019-09-08 01:24:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 682 transitions. [2019-09-08 01:24:21,004 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 682 transitions. Word has length 674 [2019-09-08 01:24:21,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:24:21,004 INFO L475 AbstractCegarLoop]: Abstraction has 681 states and 682 transitions. [2019-09-08 01:24:21,004 INFO L476 AbstractCegarLoop]: Interpolant automaton has 137 states. [2019-09-08 01:24:21,004 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 682 transitions. [2019-09-08 01:24:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2019-09-08 01:24:21,007 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:24:21,008 INFO L399 BasicCegarLoop]: trace histogram [127, 126, 126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:24:21,008 INFO L418 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:24:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:24:21,008 INFO L82 PathProgramCache]: Analyzing trace with hash -877835417, now seen corresponding path program 126 times [2019-09-08 01:24:21,008 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:24:21,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:24:21,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:21,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:24:21,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:24:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 39627 backedges. 0 proven. 39627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:27,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:24:27,899 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:24:27,915 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:24:30,206 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2019-09-08 01:24:30,206 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:24:30,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 6125 conjuncts, 137 conjunts are in the unsatisfiable core [2019-09-08 01:24:30,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:24:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 39627 backedges. 0 proven. 39627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:30,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:24:30,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2019-09-08 01:24:30,494 INFO L454 AbstractCegarLoop]: Interpolant automaton has 138 states [2019-09-08 01:24:30,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2019-09-08 01:24:30,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2019-09-08 01:24:30,496 INFO L87 Difference]: Start difference. First operand 681 states and 682 transitions. Second operand 138 states. [2019-09-08 01:24:32,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:24:32,097 INFO L93 Difference]: Finished difference Result 696 states and 698 transitions. [2019-09-08 01:24:32,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2019-09-08 01:24:32,097 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 679 [2019-09-08 01:24:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:24:32,098 INFO L225 Difference]: With dead ends: 696 [2019-09-08 01:24:32,098 INFO L226 Difference]: Without dead ends: 689 [2019-09-08 01:24:32,099 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=9453, Invalid=9453, Unknown=0, NotChecked=0, Total=18906 [2019-09-08 01:24:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2019-09-08 01:24:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 686. [2019-09-08 01:24:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-09-08 01:24:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 687 transitions. [2019-09-08 01:24:32,107 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 687 transitions. Word has length 679 [2019-09-08 01:24:32,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:24:32,108 INFO L475 AbstractCegarLoop]: Abstraction has 686 states and 687 transitions. [2019-09-08 01:24:32,108 INFO L476 AbstractCegarLoop]: Interpolant automaton has 138 states. [2019-09-08 01:24:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 687 transitions. [2019-09-08 01:24:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2019-09-08 01:24:32,112 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:24:32,112 INFO L399 BasicCegarLoop]: trace histogram [128, 127, 127, 127, 127, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:24:32,112 INFO L418 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:24:32,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:24:32,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1922645957, now seen corresponding path program 127 times [2019-09-08 01:24:32,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:24:32,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:24:32,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:32,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:24:32,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:24:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 40259 backedges. 0 proven. 40259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:39,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:24:39,107 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:24:39,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:24:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:24:39,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 6167 conjuncts, 138 conjunts are in the unsatisfiable core [2019-09-08 01:24:39,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:24:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 40259 backedges. 0 proven. 40259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:40,325 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:24:40,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2019-09-08 01:24:40,326 INFO L454 AbstractCegarLoop]: Interpolant automaton has 139 states [2019-09-08 01:24:40,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2019-09-08 01:24:40,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2019-09-08 01:24:40,328 INFO L87 Difference]: Start difference. First operand 686 states and 687 transitions. Second operand 139 states. [2019-09-08 01:24:41,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:24:41,620 INFO L93 Difference]: Finished difference Result 701 states and 703 transitions. [2019-09-08 01:24:41,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2019-09-08 01:24:41,621 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 684 [2019-09-08 01:24:41,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:24:41,622 INFO L225 Difference]: With dead ends: 701 [2019-09-08 01:24:41,622 INFO L226 Difference]: Without dead ends: 694 [2019-09-08 01:24:41,622 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=9591, Invalid=9591, Unknown=0, NotChecked=0, Total=19182 [2019-09-08 01:24:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-09-08 01:24:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 691. [2019-09-08 01:24:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2019-09-08 01:24:41,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 692 transitions. [2019-09-08 01:24:41,627 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 692 transitions. Word has length 684 [2019-09-08 01:24:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:24:41,627 INFO L475 AbstractCegarLoop]: Abstraction has 691 states and 692 transitions. [2019-09-08 01:24:41,628 INFO L476 AbstractCegarLoop]: Interpolant automaton has 139 states. [2019-09-08 01:24:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 692 transitions. [2019-09-08 01:24:41,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2019-09-08 01:24:41,630 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:24:41,630 INFO L399 BasicCegarLoop]: trace histogram [129, 128, 128, 128, 128, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:24:41,630 INFO L418 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:24:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:24:41,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1396256743, now seen corresponding path program 128 times [2019-09-08 01:24:41,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:24:41,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:24:41,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:41,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:24:41,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:24:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 40896 backedges. 0 proven. 40896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:48,473 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:24:48,473 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:24:48,485 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:24:49,333 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:24:49,333 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:24:49,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 6209 conjuncts, 139 conjunts are in the unsatisfiable core [2019-09-08 01:24:49,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:24:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 40896 backedges. 0 proven. 40896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:49,623 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:24:49,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2019-09-08 01:24:49,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 140 states [2019-09-08 01:24:49,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2019-09-08 01:24:49,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2019-09-08 01:24:49,627 INFO L87 Difference]: Start difference. First operand 691 states and 692 transitions. Second operand 140 states. [2019-09-08 01:24:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:24:51,316 INFO L93 Difference]: Finished difference Result 706 states and 708 transitions. [2019-09-08 01:24:51,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2019-09-08 01:24:51,317 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 689 [2019-09-08 01:24:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:24:51,318 INFO L225 Difference]: With dead ends: 706 [2019-09-08 01:24:51,318 INFO L226 Difference]: Without dead ends: 699 [2019-09-08 01:24:51,318 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=9730, Invalid=9730, Unknown=0, NotChecked=0, Total=19460 [2019-09-08 01:24:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2019-09-08 01:24:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 696. [2019-09-08 01:24:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-09-08 01:24:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 697 transitions. [2019-09-08 01:24:51,323 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 697 transitions. Word has length 689 [2019-09-08 01:24:51,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:24:51,324 INFO L475 AbstractCegarLoop]: Abstraction has 696 states and 697 transitions. [2019-09-08 01:24:51,324 INFO L476 AbstractCegarLoop]: Interpolant automaton has 140 states. [2019-09-08 01:24:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 697 transitions. [2019-09-08 01:24:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2019-09-08 01:24:51,327 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:24:51,328 INFO L399 BasicCegarLoop]: trace histogram [130, 129, 129, 129, 129, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:24:51,328 INFO L418 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:24:51,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:24:51,328 INFO L82 PathProgramCache]: Analyzing trace with hash -267015237, now seen corresponding path program 129 times [2019-09-08 01:24:51,328 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:24:51,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:24:51,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:51,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:24:51,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:24:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 41538 backedges. 0 proven. 41538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:58,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:24:58,422 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:24:58,432 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:25:00,895 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 130 check-sat command(s) [2019-09-08 01:25:00,895 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:25:00,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 6251 conjuncts, 140 conjunts are in the unsatisfiable core [2019-09-08 01:25:00,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:25:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 41538 backedges. 0 proven. 41538 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:01,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:25:01,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2019-09-08 01:25:01,197 INFO L454 AbstractCegarLoop]: Interpolant automaton has 141 states [2019-09-08 01:25:01,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2019-09-08 01:25:01,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2019-09-08 01:25:01,198 INFO L87 Difference]: Start difference. First operand 696 states and 697 transitions. Second operand 141 states. [2019-09-08 01:25:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:25:03,149 INFO L93 Difference]: Finished difference Result 711 states and 713 transitions. [2019-09-08 01:25:03,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2019-09-08 01:25:03,149 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 694 [2019-09-08 01:25:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:25:03,150 INFO L225 Difference]: With dead ends: 711 [2019-09-08 01:25:03,150 INFO L226 Difference]: Without dead ends: 704 [2019-09-08 01:25:03,151 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=9870, Invalid=9870, Unknown=0, NotChecked=0, Total=19740 [2019-09-08 01:25:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-09-08 01:25:03,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 701. [2019-09-08 01:25:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2019-09-08 01:25:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 702 transitions. [2019-09-08 01:25:03,157 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 702 transitions. Word has length 694 [2019-09-08 01:25:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:25:03,157 INFO L475 AbstractCegarLoop]: Abstraction has 701 states and 702 transitions. [2019-09-08 01:25:03,157 INFO L476 AbstractCegarLoop]: Interpolant automaton has 141 states. [2019-09-08 01:25:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 702 transitions. [2019-09-08 01:25:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2019-09-08 01:25:03,160 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:25:03,160 INFO L399 BasicCegarLoop]: trace histogram [131, 130, 130, 130, 130, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:25:03,160 INFO L418 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:25:03,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:25:03,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1251046503, now seen corresponding path program 130 times [2019-09-08 01:25:03,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:25:03,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:25:03,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:03,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:25:03,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:25:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 42185 backedges. 0 proven. 42185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:10,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:25:10,475 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:25:10,486 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:25:11,362 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:25:11,362 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:25:11,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 6293 conjuncts, 141 conjunts are in the unsatisfiable core [2019-09-08 01:25:11,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:25:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 42185 backedges. 0 proven. 42185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:11,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:25:11,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2019-09-08 01:25:11,758 INFO L454 AbstractCegarLoop]: Interpolant automaton has 142 states [2019-09-08 01:25:11,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2019-09-08 01:25:11,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2019-09-08 01:25:11,759 INFO L87 Difference]: Start difference. First operand 701 states and 702 transitions. Second operand 142 states. [2019-09-08 01:25:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:25:13,499 INFO L93 Difference]: Finished difference Result 716 states and 718 transitions. [2019-09-08 01:25:13,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2019-09-08 01:25:13,499 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 699 [2019-09-08 01:25:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:25:13,500 INFO L225 Difference]: With dead ends: 716 [2019-09-08 01:25:13,500 INFO L226 Difference]: Without dead ends: 709 [2019-09-08 01:25:13,501 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=10011, Invalid=10011, Unknown=0, NotChecked=0, Total=20022 [2019-09-08 01:25:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2019-09-08 01:25:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 706. [2019-09-08 01:25:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-09-08 01:25:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 707 transitions. [2019-09-08 01:25:13,509 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 707 transitions. Word has length 699 [2019-09-08 01:25:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:25:13,510 INFO L475 AbstractCegarLoop]: Abstraction has 706 states and 707 transitions. [2019-09-08 01:25:13,510 INFO L476 AbstractCegarLoop]: Interpolant automaton has 142 states. [2019-09-08 01:25:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 707 transitions. [2019-09-08 01:25:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2019-09-08 01:25:13,514 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:25:13,515 INFO L399 BasicCegarLoop]: trace histogram [132, 131, 131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:25:13,515 INFO L418 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:25:13,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:25:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1280035013, now seen corresponding path program 131 times [2019-09-08 01:25:13,515 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:25:13,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:25:13,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:13,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:25:13,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:25:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 42837 backedges. 0 proven. 42837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:20,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:25:20,949 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:25:20,959 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:25:22,997 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 132 check-sat command(s) [2019-09-08 01:25:22,998 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:25:23,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 6335 conjuncts, 142 conjunts are in the unsatisfiable core [2019-09-08 01:25:23,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:25:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 42837 backedges. 0 proven. 42837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:23,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:25:23,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2019-09-08 01:25:23,313 INFO L454 AbstractCegarLoop]: Interpolant automaton has 143 states [2019-09-08 01:25:23,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2019-09-08 01:25:23,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2019-09-08 01:25:23,316 INFO L87 Difference]: Start difference. First operand 706 states and 707 transitions. Second operand 143 states. [2019-09-08 01:25:24,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:25:24,248 INFO L93 Difference]: Finished difference Result 721 states and 723 transitions. [2019-09-08 01:25:24,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2019-09-08 01:25:24,248 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 704 [2019-09-08 01:25:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:25:24,249 INFO L225 Difference]: With dead ends: 721 [2019-09-08 01:25:24,250 INFO L226 Difference]: Without dead ends: 714 [2019-09-08 01:25:24,250 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=10153, Invalid=10153, Unknown=0, NotChecked=0, Total=20306 [2019-09-08 01:25:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2019-09-08 01:25:24,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 711. [2019-09-08 01:25:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2019-09-08 01:25:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 712 transitions. [2019-09-08 01:25:24,256 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 712 transitions. Word has length 704 [2019-09-08 01:25:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:25:24,256 INFO L475 AbstractCegarLoop]: Abstraction has 711 states and 712 transitions. [2019-09-08 01:25:24,256 INFO L476 AbstractCegarLoop]: Interpolant automaton has 143 states. [2019-09-08 01:25:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 712 transitions. [2019-09-08 01:25:24,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2019-09-08 01:25:24,259 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:25:24,259 INFO L399 BasicCegarLoop]: trace histogram [133, 132, 132, 132, 132, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:25:24,259 INFO L418 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:25:24,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:25:24,259 INFO L82 PathProgramCache]: Analyzing trace with hash 633215207, now seen corresponding path program 132 times [2019-09-08 01:25:24,259 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:25:24,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:25:24,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:24,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:25:24,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:25:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 43494 backedges. 0 proven. 43494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:31,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:25:31,617 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:25:31,628 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:25:34,128 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 133 check-sat command(s) [2019-09-08 01:25:34,128 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:25:34,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 6377 conjuncts, 143 conjunts are in the unsatisfiable core [2019-09-08 01:25:34,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:25:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 43494 backedges. 0 proven. 43494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:34,517 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:25:34,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2019-09-08 01:25:34,517 INFO L454 AbstractCegarLoop]: Interpolant automaton has 144 states [2019-09-08 01:25:34,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2019-09-08 01:25:34,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2019-09-08 01:25:34,519 INFO L87 Difference]: Start difference. First operand 711 states and 712 transitions. Second operand 144 states. [2019-09-08 01:25:36,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:25:36,262 INFO L93 Difference]: Finished difference Result 726 states and 728 transitions. [2019-09-08 01:25:36,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2019-09-08 01:25:36,262 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 709 [2019-09-08 01:25:36,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:25:36,263 INFO L225 Difference]: With dead ends: 726 [2019-09-08 01:25:36,263 INFO L226 Difference]: Without dead ends: 719 [2019-09-08 01:25:36,264 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=10296, Invalid=10296, Unknown=0, NotChecked=0, Total=20592 [2019-09-08 01:25:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2019-09-08 01:25:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 716. [2019-09-08 01:25:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2019-09-08 01:25:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 717 transitions. [2019-09-08 01:25:36,269 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 717 transitions. Word has length 709 [2019-09-08 01:25:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:25:36,269 INFO L475 AbstractCegarLoop]: Abstraction has 716 states and 717 transitions. [2019-09-08 01:25:36,269 INFO L476 AbstractCegarLoop]: Interpolant automaton has 144 states. [2019-09-08 01:25:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 717 transitions. [2019-09-08 01:25:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2019-09-08 01:25:36,272 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:25:36,272 INFO L399 BasicCegarLoop]: trace histogram [134, 133, 133, 133, 133, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:25:36,272 INFO L418 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:25:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:25:36,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1455791429, now seen corresponding path program 133 times [2019-09-08 01:25:36,272 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:25:36,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:25:36,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:36,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:25:36,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:25:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 44156 backedges. 0 proven. 44156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:43,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:25:43,704 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:25:43,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:25:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:25:44,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 6419 conjuncts, 144 conjunts are in the unsatisfiable core [2019-09-08 01:25:44,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:25:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 44156 backedges. 0 proven. 44156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:44,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:25:44,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2019-09-08 01:25:44,878 INFO L454 AbstractCegarLoop]: Interpolant automaton has 145 states [2019-09-08 01:25:44,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2019-09-08 01:25:44,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2019-09-08 01:25:44,880 INFO L87 Difference]: Start difference. First operand 716 states and 717 transitions. Second operand 145 states. [2019-09-08 01:25:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:25:46,853 INFO L93 Difference]: Finished difference Result 731 states and 733 transitions. [2019-09-08 01:25:46,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2019-09-08 01:25:46,853 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 714 [2019-09-08 01:25:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:25:46,854 INFO L225 Difference]: With dead ends: 731 [2019-09-08 01:25:46,854 INFO L226 Difference]: Without dead ends: 724 [2019-09-08 01:25:46,855 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=10440, Invalid=10440, Unknown=0, NotChecked=0, Total=20880 [2019-09-08 01:25:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2019-09-08 01:25:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 721. [2019-09-08 01:25:46,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2019-09-08 01:25:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 722 transitions. [2019-09-08 01:25:46,860 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 722 transitions. Word has length 714 [2019-09-08 01:25:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:25:46,861 INFO L475 AbstractCegarLoop]: Abstraction has 721 states and 722 transitions. [2019-09-08 01:25:46,861 INFO L476 AbstractCegarLoop]: Interpolant automaton has 145 states. [2019-09-08 01:25:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 722 transitions. [2019-09-08 01:25:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2019-09-08 01:25:46,863 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:25:46,864 INFO L399 BasicCegarLoop]: trace histogram [135, 134, 134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:25:46,864 INFO L418 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:25:46,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:25:46,864 INFO L82 PathProgramCache]: Analyzing trace with hash -288940697, now seen corresponding path program 134 times [2019-09-08 01:25:46,864 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:25:46,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:25:46,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:46,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:25:46,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:25:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 44823 backedges. 0 proven. 44823 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:54,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:25:54,418 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:25:54,428 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:25:55,314 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:25:55,314 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:25:55,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 6461 conjuncts, 145 conjunts are in the unsatisfiable core [2019-09-08 01:25:55,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:25:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 44823 backedges. 0 proven. 44823 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:25:55,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:25:55,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 146 [2019-09-08 01:25:55,695 INFO L454 AbstractCegarLoop]: Interpolant automaton has 146 states [2019-09-08 01:25:55,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2019-09-08 01:25:55,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2019-09-08 01:25:55,697 INFO L87 Difference]: Start difference. First operand 721 states and 722 transitions. Second operand 146 states. [2019-09-08 01:25:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:25:56,667 INFO L93 Difference]: Finished difference Result 736 states and 738 transitions. [2019-09-08 01:25:56,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2019-09-08 01:25:56,667 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 719 [2019-09-08 01:25:56,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:25:56,669 INFO L225 Difference]: With dead ends: 736 [2019-09-08 01:25:56,669 INFO L226 Difference]: Without dead ends: 729 [2019-09-08 01:25:56,669 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=10585, Invalid=10585, Unknown=0, NotChecked=0, Total=21170 [2019-09-08 01:25:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2019-09-08 01:25:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 726. [2019-09-08 01:25:56,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2019-09-08 01:25:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 727 transitions. [2019-09-08 01:25:56,675 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 727 transitions. Word has length 719 [2019-09-08 01:25:56,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:25:56,675 INFO L475 AbstractCegarLoop]: Abstraction has 726 states and 727 transitions. [2019-09-08 01:25:56,675 INFO L476 AbstractCegarLoop]: Interpolant automaton has 146 states. [2019-09-08 01:25:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 727 transitions. [2019-09-08 01:25:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2019-09-08 01:25:56,679 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:25:56,680 INFO L399 BasicCegarLoop]: trace histogram [136, 135, 135, 135, 135, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:25:56,680 INFO L418 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:25:56,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:25:56,680 INFO L82 PathProgramCache]: Analyzing trace with hash -878694853, now seen corresponding path program 135 times [2019-09-08 01:25:56,680 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:25:56,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:25:56,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:56,681 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:25:56,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:25:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:26:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 45495 backedges. 0 proven. 45495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:04,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:26:04,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:26:04,264 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:26:06,869 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 136 check-sat command(s) [2019-09-08 01:26:06,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:26:06,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 6503 conjuncts, 146 conjunts are in the unsatisfiable core [2019-09-08 01:26:06,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:26:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 45495 backedges. 0 proven. 45495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:07,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:26:07,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2019-09-08 01:26:07,190 INFO L454 AbstractCegarLoop]: Interpolant automaton has 147 states [2019-09-08 01:26:07,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2019-09-08 01:26:07,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2019-09-08 01:26:07,192 INFO L87 Difference]: Start difference. First operand 726 states and 727 transitions. Second operand 147 states. [2019-09-08 01:26:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:26:08,565 INFO L93 Difference]: Finished difference Result 741 states and 743 transitions. [2019-09-08 01:26:08,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2019-09-08 01:26:08,566 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 724 [2019-09-08 01:26:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:26:08,567 INFO L225 Difference]: With dead ends: 741 [2019-09-08 01:26:08,567 INFO L226 Difference]: Without dead ends: 734 [2019-09-08 01:26:08,568 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=10731, Invalid=10731, Unknown=0, NotChecked=0, Total=21462 [2019-09-08 01:26:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2019-09-08 01:26:08,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 731. [2019-09-08 01:26:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2019-09-08 01:26:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 732 transitions. [2019-09-08 01:26:08,574 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 732 transitions. Word has length 724 [2019-09-08 01:26:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:26:08,575 INFO L475 AbstractCegarLoop]: Abstraction has 731 states and 732 transitions. [2019-09-08 01:26:08,575 INFO L476 AbstractCegarLoop]: Interpolant automaton has 147 states. [2019-09-08 01:26:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 732 transitions. [2019-09-08 01:26:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2019-09-08 01:26:08,578 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:26:08,578 INFO L399 BasicCegarLoop]: trace histogram [137, 136, 136, 136, 136, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:26:08,578 INFO L418 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:26:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:26:08,579 INFO L82 PathProgramCache]: Analyzing trace with hash -978026009, now seen corresponding path program 136 times [2019-09-08 01:26:08,579 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:26:08,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:26:08,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:08,579 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:26:08,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:26:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 46172 backedges. 0 proven. 46172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:16,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:26:16,297 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:26:16,308 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:26:17,228 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:26:17,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:26:17,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 6545 conjuncts, 147 conjunts are in the unsatisfiable core [2019-09-08 01:26:17,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:26:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 46172 backedges. 0 proven. 46172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:17,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:26:17,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 148 [2019-09-08 01:26:17,554 INFO L454 AbstractCegarLoop]: Interpolant automaton has 148 states [2019-09-08 01:26:17,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2019-09-08 01:26:17,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2019-09-08 01:26:17,556 INFO L87 Difference]: Start difference. First operand 731 states and 732 transitions. Second operand 148 states. [2019-09-08 01:26:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:26:19,078 INFO L93 Difference]: Finished difference Result 746 states and 748 transitions. [2019-09-08 01:26:19,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2019-09-08 01:26:19,079 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 729 [2019-09-08 01:26:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:26:19,080 INFO L225 Difference]: With dead ends: 746 [2019-09-08 01:26:19,080 INFO L226 Difference]: Without dead ends: 739 [2019-09-08 01:26:19,081 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=10878, Invalid=10878, Unknown=0, NotChecked=0, Total=21756 [2019-09-08 01:26:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2019-09-08 01:26:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 736. [2019-09-08 01:26:19,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2019-09-08 01:26:19,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 737 transitions. [2019-09-08 01:26:19,087 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 737 transitions. Word has length 729 [2019-09-08 01:26:19,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:26:19,087 INFO L475 AbstractCegarLoop]: Abstraction has 736 states and 737 transitions. [2019-09-08 01:26:19,087 INFO L476 AbstractCegarLoop]: Interpolant automaton has 148 states. [2019-09-08 01:26:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 737 transitions. [2019-09-08 01:26:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2019-09-08 01:26:19,091 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:26:19,091 INFO L399 BasicCegarLoop]: trace histogram [138, 137, 137, 137, 137, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:26:19,091 INFO L418 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:26:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:26:19,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1075996229, now seen corresponding path program 137 times [2019-09-08 01:26:19,091 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:26:19,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:26:19,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:19,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:26:19,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:26:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 46854 backedges. 0 proven. 46854 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:26,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:26:26,840 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:26:26,851 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:26:29,071 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2019-09-08 01:26:29,071 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:26:29,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 6587 conjuncts, 148 conjunts are in the unsatisfiable core [2019-09-08 01:26:29,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:26:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 46854 backedges. 0 proven. 46854 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:29,479 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:26:29,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 149 [2019-09-08 01:26:29,482 INFO L454 AbstractCegarLoop]: Interpolant automaton has 149 states [2019-09-08 01:26:29,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2019-09-08 01:26:29,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2019-09-08 01:26:29,484 INFO L87 Difference]: Start difference. First operand 736 states and 737 transitions. Second operand 149 states. [2019-09-08 01:26:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:26:30,501 INFO L93 Difference]: Finished difference Result 751 states and 753 transitions. [2019-09-08 01:26:30,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2019-09-08 01:26:30,501 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 734 [2019-09-08 01:26:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:26:30,502 INFO L225 Difference]: With dead ends: 751 [2019-09-08 01:26:30,503 INFO L226 Difference]: Without dead ends: 744 [2019-09-08 01:26:30,503 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2019-09-08 01:26:30,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-09-08 01:26:30,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 741. [2019-09-08 01:26:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-09-08 01:26:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 742 transitions. [2019-09-08 01:26:30,509 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 742 transitions. Word has length 734 [2019-09-08 01:26:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:26:30,509 INFO L475 AbstractCegarLoop]: Abstraction has 741 states and 742 transitions. [2019-09-08 01:26:30,509 INFO L476 AbstractCegarLoop]: Interpolant automaton has 149 states. [2019-09-08 01:26:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 742 transitions. [2019-09-08 01:26:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2019-09-08 01:26:30,512 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:26:30,513 INFO L399 BasicCegarLoop]: trace histogram [139, 138, 138, 138, 138, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:26:30,513 INFO L418 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:26:30,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:26:30,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1619936871, now seen corresponding path program 138 times [2019-09-08 01:26:30,513 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:26:30,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:26:30,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:30,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:26:30,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:26:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 47541 backedges. 0 proven. 47541 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:38,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:26:38,347 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:26:38,359 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:26:41,123 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 139 check-sat command(s) [2019-09-08 01:26:41,123 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:26:41,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 6629 conjuncts, 149 conjunts are in the unsatisfiable core [2019-09-08 01:26:41,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:26:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 47541 backedges. 0 proven. 47541 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:41,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:26:41,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 150 [2019-09-08 01:26:41,461 INFO L454 AbstractCegarLoop]: Interpolant automaton has 150 states [2019-09-08 01:26:41,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2019-09-08 01:26:41,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2019-09-08 01:26:41,463 INFO L87 Difference]: Start difference. First operand 741 states and 742 transitions. Second operand 150 states. [2019-09-08 01:26:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:26:43,049 INFO L93 Difference]: Finished difference Result 756 states and 758 transitions. [2019-09-08 01:26:43,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2019-09-08 01:26:43,049 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 739 [2019-09-08 01:26:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:26:43,050 INFO L225 Difference]: With dead ends: 756 [2019-09-08 01:26:43,050 INFO L226 Difference]: Without dead ends: 749 [2019-09-08 01:26:43,051 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=11175, Invalid=11175, Unknown=0, NotChecked=0, Total=22350 [2019-09-08 01:26:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2019-09-08 01:26:43,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2019-09-08 01:26:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-09-08 01:26:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 747 transitions. [2019-09-08 01:26:43,057 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 747 transitions. Word has length 739 [2019-09-08 01:26:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:26:43,058 INFO L475 AbstractCegarLoop]: Abstraction has 746 states and 747 transitions. [2019-09-08 01:26:43,058 INFO L476 AbstractCegarLoop]: Interpolant automaton has 150 states. [2019-09-08 01:26:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 747 transitions. [2019-09-08 01:26:43,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2019-09-08 01:26:43,061 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:26:43,061 INFO L399 BasicCegarLoop]: trace histogram [140, 139, 139, 139, 139, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:26:43,061 INFO L418 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:26:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:26:43,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1424663867, now seen corresponding path program 139 times [2019-09-08 01:26:43,061 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:26:43,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:26:43,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:43,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:26:43,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:26:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 48233 backedges. 0 proven. 48233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:51,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:26:51,210 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:26:51,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:26:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:26:52,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 6671 conjuncts, 150 conjunts are in the unsatisfiable core [2019-09-08 01:26:52,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:26:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 48233 backedges. 0 proven. 48233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:26:52,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:26:52,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 151 [2019-09-08 01:26:52,528 INFO L454 AbstractCegarLoop]: Interpolant automaton has 151 states [2019-09-08 01:26:52,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2019-09-08 01:26:52,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2019-09-08 01:26:52,530 INFO L87 Difference]: Start difference. First operand 746 states and 747 transitions. Second operand 151 states. [2019-09-08 01:26:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:26:54,584 INFO L93 Difference]: Finished difference Result 761 states and 763 transitions. [2019-09-08 01:26:54,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2019-09-08 01:26:54,584 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 744 [2019-09-08 01:26:54,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:26:54,586 INFO L225 Difference]: With dead ends: 761 [2019-09-08 01:26:54,586 INFO L226 Difference]: Without dead ends: 754 [2019-09-08 01:26:54,586 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=11325, Invalid=11325, Unknown=0, NotChecked=0, Total=22650 [2019-09-08 01:26:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2019-09-08 01:26:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 751. [2019-09-08 01:26:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2019-09-08 01:26:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 752 transitions. [2019-09-08 01:26:54,591 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 752 transitions. Word has length 744 [2019-09-08 01:26:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:26:54,592 INFO L475 AbstractCegarLoop]: Abstraction has 751 states and 752 transitions. [2019-09-08 01:26:54,592 INFO L476 AbstractCegarLoop]: Interpolant automaton has 151 states. [2019-09-08 01:26:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 752 transitions. [2019-09-08 01:26:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2019-09-08 01:26:54,595 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:26:54,595 INFO L399 BasicCegarLoop]: trace histogram [141, 140, 140, 140, 140, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:26:54,595 INFO L418 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:26:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:26:54,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1956877593, now seen corresponding path program 140 times [2019-09-08 01:26:54,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:26:54,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:26:54,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:54,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:26:54,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:26:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:27:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 48930 backedges. 0 proven. 48930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:02,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:27:02,809 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:27:02,821 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:27:03,767 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:27:03,767 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:27:03,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 6713 conjuncts, 151 conjunts are in the unsatisfiable core [2019-09-08 01:27:03,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:27:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 48930 backedges. 0 proven. 48930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:04,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:27:04,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 152 [2019-09-08 01:27:04,165 INFO L454 AbstractCegarLoop]: Interpolant automaton has 152 states [2019-09-08 01:27:04,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2019-09-08 01:27:04,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2019-09-08 01:27:04,167 INFO L87 Difference]: Start difference. First operand 751 states and 752 transitions. Second operand 152 states. [2019-09-08 01:27:05,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:27:05,236 INFO L93 Difference]: Finished difference Result 766 states and 768 transitions. [2019-09-08 01:27:05,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2019-09-08 01:27:05,236 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 749 [2019-09-08 01:27:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:27:05,237 INFO L225 Difference]: With dead ends: 766 [2019-09-08 01:27:05,237 INFO L226 Difference]: Without dead ends: 759 [2019-09-08 01:27:05,238 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=11476, Invalid=11476, Unknown=0, NotChecked=0, Total=22952 [2019-09-08 01:27:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-09-08 01:27:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 756. [2019-09-08 01:27:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2019-09-08 01:27:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 757 transitions. [2019-09-08 01:27:05,244 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 757 transitions. Word has length 749 [2019-09-08 01:27:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:27:05,245 INFO L475 AbstractCegarLoop]: Abstraction has 756 states and 757 transitions. [2019-09-08 01:27:05,245 INFO L476 AbstractCegarLoop]: Interpolant automaton has 152 states. [2019-09-08 01:27:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 757 transitions. [2019-09-08 01:27:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2019-09-08 01:27:05,248 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:05,249 INFO L399 BasicCegarLoop]: trace histogram [142, 141, 141, 141, 141, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:05,249 INFO L418 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:05,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:05,249 INFO L82 PathProgramCache]: Analyzing trace with hash 62869691, now seen corresponding path program 141 times [2019-09-08 01:27:05,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:05,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:05,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:05,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:27:05,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:27:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 49632 backedges. 0 proven. 49632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:13,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:27:13,671 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:27:13,682 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:27:16,629 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 142 check-sat command(s) [2019-09-08 01:27:16,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:27:16,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 6755 conjuncts, 152 conjunts are in the unsatisfiable core [2019-09-08 01:27:16,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:27:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 49632 backedges. 0 proven. 49632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:16,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:27:16,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 153 [2019-09-08 01:27:16,987 INFO L454 AbstractCegarLoop]: Interpolant automaton has 153 states [2019-09-08 01:27:16,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2019-09-08 01:27:16,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2019-09-08 01:27:16,989 INFO L87 Difference]: Start difference. First operand 756 states and 757 transitions. Second operand 153 states. [2019-09-08 01:27:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:27:19,100 INFO L93 Difference]: Finished difference Result 771 states and 773 transitions. [2019-09-08 01:27:19,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2019-09-08 01:27:19,101 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 754 [2019-09-08 01:27:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:27:19,102 INFO L225 Difference]: With dead ends: 771 [2019-09-08 01:27:19,102 INFO L226 Difference]: Without dead ends: 764 [2019-09-08 01:27:19,103 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=11628, Invalid=11628, Unknown=0, NotChecked=0, Total=23256 [2019-09-08 01:27:19,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2019-09-08 01:27:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 761. [2019-09-08 01:27:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2019-09-08 01:27:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 762 transitions. [2019-09-08 01:27:19,108 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 762 transitions. Word has length 754 [2019-09-08 01:27:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:27:19,108 INFO L475 AbstractCegarLoop]: Abstraction has 761 states and 762 transitions. [2019-09-08 01:27:19,108 INFO L476 AbstractCegarLoop]: Interpolant automaton has 153 states. [2019-09-08 01:27:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 762 transitions. [2019-09-08 01:27:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2019-09-08 01:27:19,112 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:19,112 INFO L399 BasicCegarLoop]: trace histogram [143, 142, 142, 142, 142, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:19,112 INFO L418 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:19,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1473843353, now seen corresponding path program 142 times [2019-09-08 01:27:19,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:19,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:19,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:19,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:27:19,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:27:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 50339 backedges. 0 proven. 50339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:27,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:27:27,451 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:27:27,461 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:27:28,465 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:27:28,465 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:27:28,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 6797 conjuncts, 153 conjunts are in the unsatisfiable core [2019-09-08 01:27:28,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:27:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 50339 backedges. 0 proven. 50339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:28,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:27:28,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 154 [2019-09-08 01:27:28,821 INFO L454 AbstractCegarLoop]: Interpolant automaton has 154 states [2019-09-08 01:27:28,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2019-09-08 01:27:28,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2019-09-08 01:27:28,823 INFO L87 Difference]: Start difference. First operand 761 states and 762 transitions. Second operand 154 states. [2019-09-08 01:27:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:27:31,146 INFO L93 Difference]: Finished difference Result 776 states and 778 transitions. [2019-09-08 01:27:31,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2019-09-08 01:27:31,146 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 759 [2019-09-08 01:27:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:27:31,148 INFO L225 Difference]: With dead ends: 776 [2019-09-08 01:27:31,148 INFO L226 Difference]: Without dead ends: 769 [2019-09-08 01:27:31,149 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=11781, Invalid=11781, Unknown=0, NotChecked=0, Total=23562 [2019-09-08 01:27:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2019-09-08 01:27:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 766. [2019-09-08 01:27:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2019-09-08 01:27:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 767 transitions. [2019-09-08 01:27:31,154 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 767 transitions. Word has length 759 [2019-09-08 01:27:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:27:31,154 INFO L475 AbstractCegarLoop]: Abstraction has 766 states and 767 transitions. [2019-09-08 01:27:31,154 INFO L476 AbstractCegarLoop]: Interpolant automaton has 154 states. [2019-09-08 01:27:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 767 transitions. [2019-09-08 01:27:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2019-09-08 01:27:31,160 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:31,160 INFO L399 BasicCegarLoop]: trace histogram [144, 143, 143, 143, 143, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:31,160 INFO L418 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:31,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:31,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1867750459, now seen corresponding path program 143 times [2019-09-08 01:27:31,161 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:31,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:31,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:31,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:27:31,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:27:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 51051 backedges. 0 proven. 51051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:39,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:27:39,676 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:27:39,686 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 01:27:42,166 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 144 check-sat command(s) [2019-09-08 01:27:42,167 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:27:42,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 6839 conjuncts, 154 conjunts are in the unsatisfiable core [2019-09-08 01:27:42,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:27:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 51051 backedges. 0 proven. 51051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:42,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:27:42,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 155 [2019-09-08 01:27:42,581 INFO L454 AbstractCegarLoop]: Interpolant automaton has 155 states [2019-09-08 01:27:42,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2019-09-08 01:27:42,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2019-09-08 01:27:42,583 INFO L87 Difference]: Start difference. First operand 766 states and 767 transitions. Second operand 155 states. [2019-09-08 01:27:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:27:43,842 INFO L93 Difference]: Finished difference Result 781 states and 783 transitions. [2019-09-08 01:27:43,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2019-09-08 01:27:43,843 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 764 [2019-09-08 01:27:43,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:27:43,844 INFO L225 Difference]: With dead ends: 781 [2019-09-08 01:27:43,844 INFO L226 Difference]: Without dead ends: 774 [2019-09-08 01:27:43,845 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=11935, Invalid=11935, Unknown=0, NotChecked=0, Total=23870 [2019-09-08 01:27:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-09-08 01:27:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 771. [2019-09-08 01:27:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2019-09-08 01:27:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 772 transitions. [2019-09-08 01:27:43,851 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 772 transitions. Word has length 764 [2019-09-08 01:27:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:27:43,852 INFO L475 AbstractCegarLoop]: Abstraction has 771 states and 772 transitions. [2019-09-08 01:27:43,852 INFO L476 AbstractCegarLoop]: Interpolant automaton has 155 states. [2019-09-08 01:27:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 772 transitions. [2019-09-08 01:27:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2019-09-08 01:27:43,855 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:43,855 INFO L399 BasicCegarLoop]: trace histogram [145, 144, 144, 144, 144, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:43,855 INFO L418 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:43,856 INFO L82 PathProgramCache]: Analyzing trace with hash 787862503, now seen corresponding path program 144 times [2019-09-08 01:27:43,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:43,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:43,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:43,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:27:43,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:27:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 51768 backedges. 0 proven. 51768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:52,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:27:52,533 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:27:52,543 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 01:27:55,580 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 145 check-sat command(s) [2019-09-08 01:27:55,580 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:27:55,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 6881 conjuncts, 155 conjunts are in the unsatisfiable core [2019-09-08 01:27:55,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:27:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 51768 backedges. 0 proven. 51768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:55,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:27:55,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 156 [2019-09-08 01:27:55,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 156 states [2019-09-08 01:27:55,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2019-09-08 01:27:55,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2019-09-08 01:27:55,950 INFO L87 Difference]: Start difference. First operand 771 states and 772 transitions. Second operand 156 states. [2019-09-08 01:27:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:27:56,896 INFO L93 Difference]: Finished difference Result 786 states and 788 transitions. [2019-09-08 01:27:56,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2019-09-08 01:27:56,897 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 769 [2019-09-08 01:27:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:27:56,898 INFO L225 Difference]: With dead ends: 786 [2019-09-08 01:27:56,898 INFO L226 Difference]: Without dead ends: 779 [2019-09-08 01:27:56,899 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=12090, Invalid=12090, Unknown=0, NotChecked=0, Total=24180 [2019-09-08 01:27:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2019-09-08 01:27:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 776. [2019-09-08 01:27:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2019-09-08 01:27:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 777 transitions. [2019-09-08 01:27:56,904 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 777 transitions. Word has length 769 [2019-09-08 01:27:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:27:56,905 INFO L475 AbstractCegarLoop]: Abstraction has 776 states and 777 transitions. [2019-09-08 01:27:56,905 INFO L476 AbstractCegarLoop]: Interpolant automaton has 156 states. [2019-09-08 01:27:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 777 transitions. [2019-09-08 01:27:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2019-09-08 01:27:56,908 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:56,908 INFO L399 BasicCegarLoop]: trace histogram [146, 145, 145, 145, 145, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:56,909 INFO L418 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:56,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:56,909 INFO L82 PathProgramCache]: Analyzing trace with hash -459307077, now seen corresponding path program 145 times [2019-09-08 01:27:56,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:56,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:56,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:56,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:27:56,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:28:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 52490 backedges. 0 proven. 52490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:28:06,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:28:06,422 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:28:06,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:28:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:28:07,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 6923 conjuncts, 156 conjunts are in the unsatisfiable core [2019-09-08 01:28:07,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:28:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 52490 backedges. 0 proven. 52490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:28:07,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:28:07,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 157 [2019-09-08 01:28:07,766 INFO L454 AbstractCegarLoop]: Interpolant automaton has 157 states [2019-09-08 01:28:07,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2019-09-08 01:28:07,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2019-09-08 01:28:07,768 INFO L87 Difference]: Start difference. First operand 776 states and 777 transitions. Second operand 157 states. [2019-09-08 01:28:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:28:08,810 INFO L93 Difference]: Finished difference Result 791 states and 793 transitions. [2019-09-08 01:28:08,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2019-09-08 01:28:08,811 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 774 [2019-09-08 01:28:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:28:08,812 INFO L225 Difference]: With dead ends: 791 [2019-09-08 01:28:08,812 INFO L226 Difference]: Without dead ends: 784 [2019-09-08 01:28:08,813 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=12246, Invalid=12246, Unknown=0, NotChecked=0, Total=24492 [2019-09-08 01:28:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2019-09-08 01:28:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 781. [2019-09-08 01:28:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2019-09-08 01:28:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 782 transitions. [2019-09-08 01:28:08,818 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 782 transitions. Word has length 774 [2019-09-08 01:28:08,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:28:08,818 INFO L475 AbstractCegarLoop]: Abstraction has 781 states and 782 transitions. [2019-09-08 01:28:08,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 157 states. [2019-09-08 01:28:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 782 transitions. [2019-09-08 01:28:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2019-09-08 01:28:08,822 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:28:08,822 INFO L399 BasicCegarLoop]: trace histogram [147, 146, 146, 146, 146, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:28:08,822 INFO L418 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:28:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:28:08,822 INFO L82 PathProgramCache]: Analyzing trace with hash 768677991, now seen corresponding path program 146 times [2019-09-08 01:28:08,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:28:08,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:28:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:28:08,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:28:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:28:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:28:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 53217 backedges. 0 proven. 53217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:28:17,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:28:17,748 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:28:17,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 01:28:18,765 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 01:28:18,766 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:28:18,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 6965 conjuncts, 157 conjunts are in the unsatisfiable core [2019-09-08 01:28:18,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:28:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 53217 backedges. 0 proven. 53217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:28:19,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:28:19,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 158 [2019-09-08 01:28:19,136 INFO L454 AbstractCegarLoop]: Interpolant automaton has 158 states [2019-09-08 01:28:19,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2019-09-08 01:28:19,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2019-09-08 01:28:19,138 INFO L87 Difference]: Start difference. First operand 781 states and 782 transitions. Second operand 158 states. [2019-09-08 01:28:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:28:21,327 INFO L93 Difference]: Finished difference Result 796 states and 798 transitions. [2019-09-08 01:28:21,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2019-09-08 01:28:21,328 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 779 [2019-09-08 01:28:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:28:21,329 INFO L225 Difference]: With dead ends: 796 [2019-09-08 01:28:21,329 INFO L226 Difference]: Without dead ends: 789 [2019-09-08 01:28:21,330 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=12403, Invalid=12403, Unknown=0, NotChecked=0, Total=24806 [2019-09-08 01:28:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2019-09-08 01:28:21,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 786. [2019-09-08 01:28:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2019-09-08 01:28:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 787 transitions. [2019-09-08 01:28:21,335 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 787 transitions. Word has length 779 [2019-09-08 01:28:21,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:28:21,335 INFO L475 AbstractCegarLoop]: Abstraction has 786 states and 787 transitions. [2019-09-08 01:28:21,335 INFO L476 AbstractCegarLoop]: Interpolant automaton has 158 states. [2019-09-08 01:28:21,336 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 787 transitions. [2019-09-08 01:28:21,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2019-09-08 01:28:21,340 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:28:21,340 INFO L399 BasicCegarLoop]: trace histogram [148, 147, 147, 147, 147, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:28:21,340 INFO L418 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:28:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:28:21,340 INFO L82 PathProgramCache]: Analyzing trace with hash -627371205, now seen corresponding path program 147 times [2019-09-08 01:28:21,341 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:28:21,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:28:21,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:28:21,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:28:21,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:28:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:28:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 53949 backedges. 0 proven. 53949 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:28:30,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:28:30,399 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:28:30,410 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 01:28:33,576 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 148 check-sat command(s) [2019-09-08 01:28:33,576 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:28:33,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 7007 conjuncts, 158 conjunts are in the unsatisfiable core [2019-09-08 01:28:33,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:28:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 53949 backedges. 0 proven. 53949 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:28:34,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:28:34,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 159 [2019-09-08 01:28:34,038 INFO L454 AbstractCegarLoop]: Interpolant automaton has 159 states [2019-09-08 01:28:34,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2019-09-08 01:28:34,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2019-09-08 01:28:34,039 INFO L87 Difference]: Start difference. First operand 786 states and 787 transitions. Second operand 159 states. [2019-09-08 01:28:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:28:36,616 INFO L93 Difference]: Finished difference Result 801 states and 803 transitions. [2019-09-08 01:28:36,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2019-09-08 01:28:36,616 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 784 [2019-09-08 01:28:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:28:36,617 INFO L225 Difference]: With dead ends: 801 [2019-09-08 01:28:36,617 INFO L226 Difference]: Without dead ends: 794 [2019-09-08 01:28:36,618 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=12561, Invalid=12561, Unknown=0, NotChecked=0, Total=25122 [2019-09-08 01:28:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2019-09-08 01:28:36,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 791. [2019-09-08 01:28:36,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2019-09-08 01:28:36,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 792 transitions. [2019-09-08 01:28:36,624 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 792 transitions. Word has length 784 [2019-09-08 01:28:36,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:28:36,624 INFO L475 AbstractCegarLoop]: Abstraction has 791 states and 792 transitions. [2019-09-08 01:28:36,624 INFO L476 AbstractCegarLoop]: Interpolant automaton has 159 states. [2019-09-08 01:28:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 792 transitions. [2019-09-08 01:28:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2019-09-08 01:28:36,628 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:28:36,628 INFO L399 BasicCegarLoop]: trace histogram [149, 148, 148, 148, 148, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:28:36,628 INFO L418 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:28:36,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:28:36,628 INFO L82 PathProgramCache]: Analyzing trace with hash -926892825, now seen corresponding path program 148 times [2019-09-08 01:28:36,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:28:36,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:28:36,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:28:36,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:28:36,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:28:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:28:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 54686 backedges. 0 proven. 54686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:28:45,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:28:45,803 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:28:45,814 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 01:28:46,813 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 01:28:46,814 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 01:28:46,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 7049 conjuncts, 159 conjunts are in the unsatisfiable core [2019-09-08 01:28:46,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:28:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 54686 backedges. 0 proven. 54686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:28:47,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:28:47,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 160 [2019-09-08 01:28:47,275 INFO L454 AbstractCegarLoop]: Interpolant automaton has 160 states [2019-09-08 01:28:47,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2019-09-08 01:28:47,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2019-09-08 01:28:47,278 INFO L87 Difference]: Start difference. First operand 791 states and 792 transitions. Second operand 160 states. [2019-09-08 01:28:48,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:28:48,892 INFO L93 Difference]: Finished difference Result 806 states and 808 transitions. [2019-09-08 01:28:48,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2019-09-08 01:28:48,892 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 789 [2019-09-08 01:28:48,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:28:48,893 INFO L225 Difference]: With dead ends: 806 [2019-09-08 01:28:48,893 INFO L226 Difference]: Without dead ends: 799 [2019-09-08 01:28:48,894 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2019-09-08 01:28:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2019-09-08 01:28:48,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 796. [2019-09-08 01:28:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-09-08 01:28:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 797 transitions. [2019-09-08 01:28:48,901 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 797 transitions. Word has length 789 [2019-09-08 01:28:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:28:48,901 INFO L475 AbstractCegarLoop]: Abstraction has 796 states and 797 transitions. [2019-09-08 01:28:48,901 INFO L476 AbstractCegarLoop]: Interpolant automaton has 160 states. [2019-09-08 01:28:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 797 transitions. [2019-09-08 01:28:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2019-09-08 01:28:48,905 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:28:48,905 INFO L399 BasicCegarLoop]: trace histogram [150, 149, 149, 149, 149, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:28:48,905 INFO L418 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:28:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:28:48,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1916681915, now seen corresponding path program 149 times [2019-09-08 01:28:48,906 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:28:48,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:28:48,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:28:48,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 01:28:48,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:28:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat