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/recursive/Fibonacci02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 06:12:38,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 06:12:38,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 06:12:38,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 06:12:38,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 06:12:38,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 06:12:38,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 06:12:38,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 06:12:38,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 06:12:38,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 06:12:38,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 06:12:38,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 06:12:38,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 06:12:38,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 06:12:38,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 06:12:38,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 06:12:38,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 06:12:38,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 06:12:38,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 06:12:38,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 06:12:38,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 06:12:38,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 06:12:38,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 06:12:38,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 06:12:38,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 06:12:38,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 06:12:38,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 06:12:38,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 06:12:38,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 06:12:38,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 06:12:38,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 06:12:38,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 06:12:38,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 06:12:38,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 06:12:38,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 06:12:38,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 06:12:38,480 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 06:12:38,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 06:12:38,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 06:12:38,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 06:12:38,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 06:12:38,496 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 06:12:38,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 06:12:38,496 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 06:12:38,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 06:12:38,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 06:12:38,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 06:12:38,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 06:12:38,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 06:12:38,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 06:12:38,498 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 06:12:38,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 06:12:38,498 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 06:12:38,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 06:12:38,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 06:12:38,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 06:12:38,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 06:12:38,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 06:12:38,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:12:38,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 06:12:38,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 06:12:38,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 06:12:38,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 06:12:38,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 06:12:38,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 06:12:38,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 06:12:38,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 06:12:38,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 06:12:38,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 06:12:38,551 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 06:12:38,552 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 06:12:38,552 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci02.c [2019-09-08 06:12:38,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f09fca361/ce4841dd06de465a93b56cdc7c44fd6c/FLAG603a9c7dc [2019-09-08 06:12:39,056 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 06:12:39,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci02.c [2019-09-08 06:12:39,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f09fca361/ce4841dd06de465a93b56cdc7c44fd6c/FLAG603a9c7dc [2019-09-08 06:12:39,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f09fca361/ce4841dd06de465a93b56cdc7c44fd6c [2019-09-08 06:12:39,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 06:12:39,486 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 06:12:39,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 06:12:39,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 06:12:39,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 06:12:39,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:12:39" (1/1) ... [2019-09-08 06:12:39,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720701ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39, skipping insertion in model container [2019-09-08 06:12:39,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:12:39" (1/1) ... [2019-09-08 06:12:39,502 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 06:12:39,517 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 06:12:39,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:12:39,679 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 06:12:39,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:12:39,704 INFO L192 MainTranslator]: Completed translation [2019-09-08 06:12:39,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39 WrapperNode [2019-09-08 06:12:39,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 06:12:39,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 06:12:39,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 06:12:39,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 06:12:39,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39" (1/1) ... [2019-09-08 06:12:39,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39" (1/1) ... [2019-09-08 06:12:39,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39" (1/1) ... [2019-09-08 06:12:39,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39" (1/1) ... [2019-09-08 06:12:39,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39" (1/1) ... [2019-09-08 06:12:39,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39" (1/1) ... [2019-09-08 06:12:39,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39" (1/1) ... [2019-09-08 06:12:39,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 06:12:39,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 06:12:39,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 06:12:39,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 06:12:39,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39" (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 06:12:39,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 06:12:39,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 06:12:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2019-09-08 06:12:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 06:12:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 06:12:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 06:12:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2019-09-08 06:12:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 06:12:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 06:12:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 06:12:40,021 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 06:12:40,021 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 06:12:40,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:12:40 BoogieIcfgContainer [2019-09-08 06:12:40,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 06:12:40,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 06:12:40,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 06:12:40,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 06:12:40,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:12:39" (1/3) ... [2019-09-08 06:12:40,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324a5cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:12:40, skipping insertion in model container [2019-09-08 06:12:40,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:39" (2/3) ... [2019-09-08 06:12:40,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324a5cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:12:40, skipping insertion in model container [2019-09-08 06:12:40,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:12:40" (3/3) ... [2019-09-08 06:12:40,031 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2019-09-08 06:12:40,040 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 06:12:40,048 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 06:12:40,074 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 06:12:40,106 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 06:12:40,107 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 06:12:40,108 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 06:12:40,108 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 06:12:40,108 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 06:12:40,108 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 06:12:40,109 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 06:12:40,109 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 06:12:40,109 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 06:12:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-08 06:12:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-08 06:12:40,158 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:40,159 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:40,161 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:40,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:40,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1356498376, now seen corresponding path program 1 times [2019-09-08 06:12:40,179 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:40,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:40,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:40,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:40,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:40,341 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 06:12:40,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:12:40,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:12:40,347 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:12:40,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:12:40,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:12:40,359 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-09-08 06:12:40,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:40,494 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-09-08 06:12:40,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:12:40,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-08 06:12:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:40,511 INFO L225 Difference]: With dead ends: 33 [2019-09-08 06:12:40,512 INFO L226 Difference]: Without dead ends: 21 [2019-09-08 06:12:40,517 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:12:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-08 06:12:40,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-08 06:12:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-08 06:12:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-09-08 06:12:40,578 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2019-09-08 06:12:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:40,578 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-09-08 06:12:40,579 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:12:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-09-08 06:12:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 06:12:40,580 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:40,581 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:40,581 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:40,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1591396412, now seen corresponding path program 1 times [2019-09-08 06:12:40,582 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:40,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:40,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:40,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:40,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:40,617 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 06:12:40,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:12:40,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:12:40,619 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:12:40,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:12:40,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:12:40,620 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2019-09-08 06:12:40,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:40,687 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2019-09-08 06:12:40,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:12:40,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-08 06:12:40,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:40,690 INFO L225 Difference]: With dead ends: 27 [2019-09-08 06:12:40,690 INFO L226 Difference]: Without dead ends: 23 [2019-09-08 06:12:40,691 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:12:40,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-08 06:12:40,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-09-08 06:12:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-08 06:12:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-09-08 06:12:40,699 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2019-09-08 06:12:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:40,700 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-09-08 06:12:40,700 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:12:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-09-08 06:12:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 06:12:40,702 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:40,702 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:40,702 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:40,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:40,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1761048597, now seen corresponding path program 1 times [2019-09-08 06:12:40,703 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:40,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:40,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:40,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:40,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 06:12:40,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:40,808 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:12:40,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:12:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:40,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 06:12:40,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 06:12:40,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:40,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-09-08 06:12:40,952 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 06:12:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 06:12:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 06:12:40,953 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2019-09-08 06:12:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:41,087 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2019-09-08 06:12:41,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:12:41,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2019-09-08 06:12:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:41,089 INFO L225 Difference]: With dead ends: 38 [2019-09-08 06:12:41,090 INFO L226 Difference]: Without dead ends: 23 [2019-09-08 06:12:41,091 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-09-08 06:12:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-08 06:12:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-08 06:12:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-08 06:12:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-09-08 06:12:41,098 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2019-09-08 06:12:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:41,099 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-09-08 06:12:41,099 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 06:12:41,099 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-09-08 06:12:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-08 06:12:41,101 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:41,101 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:41,101 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash -624449707, now seen corresponding path program 1 times [2019-09-08 06:12:41,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:41,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:41,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:41,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:41,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 06:12:41,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:41,188 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:12:41,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:41,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 06:12:41,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 06:12:41,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:41,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-09-08 06:12:41,236 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:12:41,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:12:41,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:12:41,238 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2019-09-08 06:12:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:41,333 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2019-09-08 06:12:41,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 06:12:41,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-09-08 06:12:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:41,337 INFO L225 Difference]: With dead ends: 32 [2019-09-08 06:12:41,337 INFO L226 Difference]: Without dead ends: 28 [2019-09-08 06:12:41,340 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-08 06:12:41,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-08 06:12:41,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-09-08 06:12:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-08 06:12:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2019-09-08 06:12:41,350 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 27 [2019-09-08 06:12:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:41,351 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2019-09-08 06:12:41,351 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:12:41,351 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2019-09-08 06:12:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-08 06:12:41,353 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:41,353 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:41,353 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:41,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:41,354 INFO L82 PathProgramCache]: Analyzing trace with hash -111055954, now seen corresponding path program 2 times [2019-09-08 06:12:41,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:41,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:41,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:41,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:41,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-08 06:12:41,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:41,512 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:12:41,535 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 06:12:41,561 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 06:12:41,561 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:41,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 06:12:41,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-08 06:12:41,625 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:41,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-09-08 06:12:41,626 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 06:12:41,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 06:12:41,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-08 06:12:41,626 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 13 states. [2019-09-08 06:12:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:42,003 INFO L93 Difference]: Finished difference Result 66 states and 99 transitions. [2019-09-08 06:12:42,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-08 06:12:42,004 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2019-09-08 06:12:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:42,006 INFO L225 Difference]: With dead ends: 66 [2019-09-08 06:12:42,006 INFO L226 Difference]: Without dead ends: 44 [2019-09-08 06:12:42,008 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2019-09-08 06:12:42,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-08 06:12:42,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-09-08 06:12:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-08 06:12:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2019-09-08 06:12:42,023 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 40 [2019-09-08 06:12:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:42,024 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2019-09-08 06:12:42,024 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 06:12:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2019-09-08 06:12:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 06:12:42,035 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:42,035 INFO L399 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:42,036 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:42,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:42,036 INFO L82 PathProgramCache]: Analyzing trace with hash -987229488, now seen corresponding path program 3 times [2019-09-08 06:12:42,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:42,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:42,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:42,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:12:42,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 46 proven. 109 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2019-09-08 06:12:42,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:42,181 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 06:12:42,207 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 06:12:42,243 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-09-08 06:12:42,244 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:42,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 06:12:42,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 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 06:12:42,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:42,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2019-09-08 06:12:42,339 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 06:12:42,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 06:12:42,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-09-08 06:12:42,339 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 11 states. [2019-09-08 06:12:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:42,707 INFO L93 Difference]: Finished difference Result 105 states and 159 transitions. [2019-09-08 06:12:42,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-08 06:12:42,708 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 96 [2019-09-08 06:12:42,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:42,712 INFO L225 Difference]: With dead ends: 105 [2019-09-08 06:12:42,712 INFO L226 Difference]: Without dead ends: 61 [2019-09-08 06:12:42,714 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-09-08 06:12:42,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-09-08 06:12:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-09-08 06:12:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-09-08 06:12:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2019-09-08 06:12:42,726 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 96 [2019-09-08 06:12:42,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:42,727 INFO L475 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2019-09-08 06:12:42,727 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 06:12:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2019-09-08 06:12:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 06:12:42,729 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:42,729 INFO L399 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:42,729 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:42,730 INFO L82 PathProgramCache]: Analyzing trace with hash 620086278, now seen corresponding path program 4 times [2019-09-08 06:12:42,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:42,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:42,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:42,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:12:42,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 61 proven. 132 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-09-08 06:12:42,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:42,852 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:12:42,863 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 06:12:42,902 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 06:12:42,903 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:42,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 06:12:42,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 37 proven. 183 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2019-09-08 06:12:42,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:42,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2019-09-08 06:12:42,972 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 06:12:42,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 06:12:42,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:12:42,974 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 9 states. [2019-09-08 06:12:43,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:43,099 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2019-09-08 06:12:43,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 06:12:43,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-08 06:12:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:43,102 INFO L225 Difference]: With dead ends: 73 [2019-09-08 06:12:43,102 INFO L226 Difference]: Without dead ends: 69 [2019-09-08 06:12:43,103 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2019-09-08 06:12:43,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-09-08 06:12:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2019-09-08 06:12:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-09-08 06:12:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2019-09-08 06:12:43,125 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 96 [2019-09-08 06:12:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:43,126 INFO L475 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2019-09-08 06:12:43,126 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 06:12:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2019-09-08 06:12:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-09-08 06:12:43,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:43,136 INFO L399 BasicCegarLoop]: trace histogram [29, 29, 24, 14, 14, 14, 14, 14, 14, 14, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:43,136 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:43,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1858814460, now seen corresponding path program 5 times [2019-09-08 06:12:43,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:43,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:43,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:43,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:12:43,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2264 backedges. 162 proven. 491 refuted. 0 times theorem prover too weak. 1611 trivial. 0 not checked. [2019-09-08 06:12:43,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:43,405 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 06:12:43,415 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 06:12:43,498 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2019-09-08 06:12:43,498 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:43,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-08 06:12:43,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2264 backedges. 620 proven. 498 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2019-09-08 06:12:43,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:43,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 17 [2019-09-08 06:12:43,724 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 06:12:43,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 06:12:43,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2019-09-08 06:12:43,725 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand 17 states. [2019-09-08 06:12:44,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:44,403 INFO L93 Difference]: Finished difference Result 158 states and 279 transitions. [2019-09-08 06:12:44,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-09-08 06:12:44,403 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 205 [2019-09-08 06:12:44,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:44,406 INFO L225 Difference]: With dead ends: 158 [2019-09-08 06:12:44,406 INFO L226 Difference]: Without dead ends: 99 [2019-09-08 06:12:44,408 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2019-09-08 06:12:44,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-09-08 06:12:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2019-09-08 06:12:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-09-08 06:12:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 116 transitions. [2019-09-08 06:12:44,423 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 116 transitions. Word has length 205 [2019-09-08 06:12:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:44,423 INFO L475 AbstractCegarLoop]: Abstraction has 87 states and 116 transitions. [2019-09-08 06:12:44,423 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 06:12:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2019-09-08 06:12:44,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2019-09-08 06:12:44,429 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:44,429 INFO L399 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:44,430 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:44,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:44,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1795105459, now seen corresponding path program 6 times [2019-09-08 06:12:44,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:44,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:44,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:44,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:12:44,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 204 proven. 1348 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2019-09-08 06:12:44,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:44,646 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:12:44,659 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 06:12:44,740 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2019-09-08 06:12:44,741 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:44,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-08 06:12:44,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 346 proven. 1004 refuted. 0 times theorem prover too weak. 4689 trivial. 0 not checked. [2019-09-08 06:12:44,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:44,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2019-09-08 06:12:44,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 06:12:44,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 06:12:44,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-09-08 06:12:44,867 INFO L87 Difference]: Start difference. First operand 87 states and 116 transitions. Second operand 11 states. [2019-09-08 06:12:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:45,025 INFO L93 Difference]: Finished difference Result 96 states and 135 transitions. [2019-09-08 06:12:45,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 06:12:45,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 327 [2019-09-08 06:12:45,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:45,028 INFO L225 Difference]: With dead ends: 96 [2019-09-08 06:12:45,028 INFO L226 Difference]: Without dead ends: 92 [2019-09-08 06:12:45,029 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2019-09-08 06:12:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-09-08 06:12:45,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-09-08 06:12:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-09-08 06:12:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 129 transitions. [2019-09-08 06:12:45,048 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 129 transitions. Word has length 327 [2019-09-08 06:12:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:45,049 INFO L475 AbstractCegarLoop]: Abstraction has 92 states and 129 transitions. [2019-09-08 06:12:45,049 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 06:12:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 129 transitions. [2019-09-08 06:12:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2019-09-08 06:12:45,064 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:45,064 INFO L399 BasicCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:45,065 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:45,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:45,065 INFO L82 PathProgramCache]: Analyzing trace with hash 243817667, now seen corresponding path program 7 times [2019-09-08 06:12:45,065 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:45,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:45,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:45,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:12:45,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 422 proven. 2921 refuted. 0 times theorem prover too weak. 15760 trivial. 0 not checked. [2019-09-08 06:12:45,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:45,458 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 06:12:45,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:45,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-08 06:12:45,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 422 proven. 2921 refuted. 0 times theorem prover too weak. 15760 trivial. 0 not checked. [2019-09-08 06:12:45,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:45,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-09-08 06:12:45,834 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 06:12:45,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 06:12:45,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2019-09-08 06:12:45,834 INFO L87 Difference]: Start difference. First operand 92 states and 129 transitions. Second operand 12 states. [2019-09-08 06:12:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:46,042 INFO L93 Difference]: Finished difference Result 101 states and 150 transitions. [2019-09-08 06:12:46,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 06:12:46,042 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 572 [2019-09-08 06:12:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:46,046 INFO L225 Difference]: With dead ends: 101 [2019-09-08 06:12:46,046 INFO L226 Difference]: Without dead ends: 97 [2019-09-08 06:12:46,047 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2019-09-08 06:12:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-09-08 06:12:46,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2019-09-08 06:12:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-09-08 06:12:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 144 transitions. [2019-09-08 06:12:46,060 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 144 transitions. Word has length 572 [2019-09-08 06:12:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:46,061 INFO L475 AbstractCegarLoop]: Abstraction has 97 states and 144 transitions. [2019-09-08 06:12:46,061 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 06:12:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 144 transitions. [2019-09-08 06:12:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2019-09-08 06:12:46,068 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:46,069 INFO L399 BasicCegarLoop]: trace histogram [125, 125, 101, 62, 62, 62, 62, 62, 62, 62, 39, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:46,069 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:46,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:46,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1213678472, now seen corresponding path program 8 times [2019-09-08 06:12:46,070 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:46,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:46,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:46,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:46,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3162 proven. 1635 refuted. 0 times theorem prover too weak. 38817 trivial. 0 not checked. [2019-09-08 06:12:47,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:47,055 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 06:12:47,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 06:12:47,288 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 06:12:47,288 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:47,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-08 06:12:47,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3546 proven. 1888 refuted. 0 times theorem prover too weak. 38180 trivial. 0 not checked. [2019-09-08 06:12:47,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:47,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 16 [2019-09-08 06:12:47,676 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-08 06:12:47,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-08 06:12:47,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-09-08 06:12:47,677 INFO L87 Difference]: Start difference. First operand 97 states and 144 transitions. Second operand 16 states. [2019-09-08 06:12:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:47,914 INFO L93 Difference]: Finished difference Result 148 states and 323 transitions. [2019-09-08 06:12:47,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 06:12:47,915 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 858 [2019-09-08 06:12:47,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:47,919 INFO L225 Difference]: With dead ends: 148 [2019-09-08 06:12:47,919 INFO L226 Difference]: Without dead ends: 121 [2019-09-08 06:12:47,920 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 861 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2019-09-08 06:12:47,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-09-08 06:12:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2019-09-08 06:12:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-09-08 06:12:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 188 transitions. [2019-09-08 06:12:47,936 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 188 transitions. Word has length 858 [2019-09-08 06:12:47,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:47,938 INFO L475 AbstractCegarLoop]: Abstraction has 121 states and 188 transitions. [2019-09-08 06:12:47,938 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-08 06:12:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 188 transitions. [2019-09-08 06:12:47,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2019-09-08 06:12:47,944 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:47,945 INFO L399 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:47,945 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:47,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:47,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1616877860, now seen corresponding path program 9 times [2019-09-08 06:12:47,946 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:47,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:47,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:47,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:12:47,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-09-08 06:12:49,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:49,472 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 06:12:49,489 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 06:12:49,930 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2019-09-08 06:12:49,930 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:49,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 439 conjunts are in the unsatisfiable core [2019-09-08 06:12:49,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-09-08 06:12:51,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:51,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2019-09-08 06:12:51,440 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-08 06:12:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-08 06:12:51,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2019-09-08 06:12:51,442 INFO L87 Difference]: Start difference. First operand 121 states and 188 transitions. Second operand 36 states. [2019-09-08 06:12:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:52,316 INFO L93 Difference]: Finished difference Result 154 states and 256 transitions. [2019-09-08 06:12:52,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-08 06:12:52,317 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 749 [2019-09-08 06:12:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:52,322 INFO L225 Difference]: With dead ends: 154 [2019-09-08 06:12:52,322 INFO L226 Difference]: Without dead ends: 150 [2019-09-08 06:12:52,324 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 880 SyntacticMatches, 55 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=1243, Unknown=0, NotChecked=0, Total=1332 [2019-09-08 06:12:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-09-08 06:12:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2019-09-08 06:12:52,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-09-08 06:12:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 198 transitions. [2019-09-08 06:12:52,349 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 198 transitions. Word has length 749 [2019-09-08 06:12:52,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:52,351 INFO L475 AbstractCegarLoop]: Abstraction has 123 states and 198 transitions. [2019-09-08 06:12:52,351 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-08 06:12:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 198 transitions. [2019-09-08 06:12:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2019-09-08 06:12:52,362 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:52,363 INFO L399 BasicCegarLoop]: trace histogram [127, 127, 103, 63, 63, 63, 63, 63, 63, 63, 40, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:52,363 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:52,364 INFO L82 PathProgramCache]: Analyzing trace with hash -249623527, now seen corresponding path program 10 times [2019-09-08 06:12:52,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:52,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:52,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:52,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:12:52,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 45069 backedges. 1624 proven. 3257 refuted. 0 times theorem prover too weak. 40188 trivial. 0 not checked. [2019-09-08 06:12:53,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:53,083 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:12:53,098 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-08 06:12:53,314 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 06:12:53,314 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:53,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-08 06:12:53,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 45069 backedges. 1753 proven. 3777 refuted. 0 times theorem prover too weak. 39539 trivial. 0 not checked. [2019-09-08 06:12:53,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:53,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 16 [2019-09-08 06:12:53,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-08 06:12:53,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-08 06:12:53,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-09-08 06:12:53,890 INFO L87 Difference]: Start difference. First operand 123 states and 198 transitions. Second operand 16 states. [2019-09-08 06:12:54,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:54,115 INFO L93 Difference]: Finished difference Result 167 states and 293 transitions. [2019-09-08 06:12:54,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 06:12:54,116 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 872 [2019-09-08 06:12:54,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:54,119 INFO L225 Difference]: With dead ends: 167 [2019-09-08 06:12:54,120 INFO L226 Difference]: Without dead ends: 123 [2019-09-08 06:12:54,123 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 875 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2019-09-08 06:12:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-09-08 06:12:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2019-09-08 06:12:54,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-09-08 06:12:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2019-09-08 06:12:54,139 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 872 [2019-09-08 06:12:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:54,140 INFO L475 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2019-09-08 06:12:54,140 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-08 06:12:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2019-09-08 06:12:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2019-09-08 06:12:54,148 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:54,149 INFO L399 BasicCegarLoop]: trace histogram [119, 119, 96, 59, 59, 59, 59, 59, 59, 59, 37, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:54,149 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:54,150 INFO L82 PathProgramCache]: Analyzing trace with hash -364988925, now seen corresponding path program 11 times [2019-09-08 06:12:54,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:54,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:54,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:12:54,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 39488 backedges. 2048 proven. 2504 refuted. 0 times theorem prover too weak. 34936 trivial. 0 not checked. [2019-09-08 06:12:54,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:54,693 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 06:12:54,704 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 06:12:54,917 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2019-09-08 06:12:54,918 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:54,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-08 06:12:54,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 39488 backedges. 20957 proven. 729 refuted. 0 times theorem prover too weak. 17802 trivial. 0 not checked. [2019-09-08 06:12:55,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:55,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2019-09-08 06:12:55,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-08 06:12:55,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-08 06:12:55,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2019-09-08 06:12:55,344 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand 22 states. [2019-09-08 06:12:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:56,088 INFO L93 Difference]: Finished difference Result 253 states and 423 transitions. [2019-09-08 06:12:56,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-08 06:12:56,088 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 817 [2019-09-08 06:12:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:56,091 INFO L225 Difference]: With dead ends: 253 [2019-09-08 06:12:56,091 INFO L226 Difference]: Without dead ends: 124 [2019-09-08 06:12:56,095 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2019-09-08 06:12:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-09-08 06:12:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2019-09-08 06:12:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-09-08 06:12:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2019-09-08 06:12:56,106 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 817 [2019-09-08 06:12:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:56,106 INFO L475 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2019-09-08 06:12:56,106 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-08 06:12:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2019-09-08 06:12:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2019-09-08 06:12:56,113 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:56,114 INFO L399 BasicCegarLoop]: trace histogram [125, 125, 101, 62, 62, 62, 62, 62, 62, 62, 39, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:56,114 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:56,114 INFO L82 PathProgramCache]: Analyzing trace with hash -371874070, now seen corresponding path program 12 times [2019-09-08 06:12:56,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:56,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:56,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:56,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:12:56,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 1098 proven. 4974 refuted. 0 times theorem prover too weak. 37542 trivial. 0 not checked. [2019-09-08 06:12:56,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:12:56,918 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 06:12:56,931 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-08 06:12:57,058 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2019-09-08 06:12:57,059 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:12:57,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-08 06:12:57,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:12:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 1694 proven. 4158 refuted. 0 times theorem prover too weak. 37762 trivial. 0 not checked. [2019-09-08 06:12:57,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:12:57,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 17 [2019-09-08 06:12:57,406 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 06:12:57,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 06:12:57,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2019-09-08 06:12:57,407 INFO L87 Difference]: Start difference. First operand 107 states and 131 transitions. Second operand 17 states. [2019-09-08 06:12:57,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:57,654 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2019-09-08 06:12:57,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-08 06:12:57,655 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 858 [2019-09-08 06:12:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:57,657 INFO L225 Difference]: With dead ends: 124 [2019-09-08 06:12:57,657 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 06:12:57,658 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2019-09-08 06:12:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 06:12:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 06:12:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 06:12:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 06:12:57,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 858 [2019-09-08 06:12:57,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:57,659 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 06:12:57,659 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 06:12:57,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 06:12:57,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 06:12:57,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 06:12:58,596 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 8 [2019-09-08 06:12:59,404 WARN L188 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 59 [2019-09-08 06:12:59,406 INFO L443 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2019-09-08 06:12:59,407 INFO L446 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2019-09-08 06:12:59,407 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| fibonacci_~n) (<= 2 fibonacci_~n) (<= fibonacci_~n |fibonacci_#in~n|)) [2019-09-08 06:12:59,407 INFO L443 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-09-08 06:12:59,407 INFO L439 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (and (let ((.cse0 (<= |fibonacci_#in~n| fibonacci_~n)) (.cse2 (<= |fibonacci_#t~ret0| 1)) (.cse3 (<= 1 |fibonacci_#t~ret0|)) (.cse1 (<= fibonacci_~n |fibonacci_#in~n|))) (or (and .cse0 (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 6) (<= 6 |fibonacci_#in~n|) (<= |fibonacci_#t~ret0| 5) .cse1) (and (<= |fibonacci_#t~ret0| 8) (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7) (<= 7 fibonacci_~n) .cse1) (and (<= 13 |fibonacci_#t~ret0|) .cse0 (<= 8 |fibonacci_#in~n|) (<= |fibonacci_#t~ret0| 13) .cse1) (and .cse2 .cse3 (<= |fibonacci_#in~n| 2) (<= 2 fibonacci_~n) .cse1) (and (<= 4 |fibonacci_#in~n|) .cse0 (<= |fibonacci_#t~ret0| 2) (<= |fibonacci_#in~n| 4) (<= 2 |fibonacci_#t~ret0|) .cse1) (and (<= 9 |fibonacci_#in~n|) .cse0 .cse1) (and (<= 5 |fibonacci_#in~n|) .cse0 (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#t~ret0| 3) (<= |fibonacci_#in~n| 5) .cse1) (and .cse2 (<= |fibonacci_#in~n| 3) .cse3 (<= 3 fibonacci_~n) .cse1))) (or (and (<= |fibonacci_#t~ret0| 21) (<= 21 |fibonacci_#t~ret0|)) (<= 10 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 8))) [2019-09-08 06:12:59,408 INFO L443 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2019-09-08 06:12:59,408 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-09-08 06:12:59,408 INFO L443 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-09-08 06:12:59,408 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2019-09-08 06:12:59,408 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 06:12:59,408 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:12:59,408 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:12:59,408 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 06:12:59,408 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 06:12:59,408 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 06:12:59,409 INFO L443 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2019-09-08 06:12:59,409 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 25 33) the Hoare annotation is: true [2019-09-08 06:12:59,409 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 25 33) no Hoare annotation was computed. [2019-09-08 06:12:59,409 INFO L443 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2019-09-08 06:12:59,409 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= 9 main_~x~0) (<= main_~x~0 9)) [2019-09-08 06:12:59,409 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-09-08 06:12:59,409 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 25 33) no Hoare annotation was computed. [2019-09-08 06:12:59,409 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 31) no Hoare annotation was computed. [2019-09-08 06:12:59,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 06:12:59 BoogieIcfgContainer [2019-09-08 06:12:59,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 06:12:59,414 INFO L168 Benchmark]: Toolchain (without parser) took 19927.92 ms. Allocated memory was 135.3 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 91.5 MB in the beginning and 310.8 MB in the end (delta: -219.3 MB). Peak memory consumption was 938.3 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:59,415 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-08 06:12:59,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.21 ms. Allocated memory is still 135.3 MB. Free memory was 91.3 MB in the beginning and 82.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:59,416 INFO L168 Benchmark]: Boogie Preprocessor took 104.21 ms. Allocated memory was 135.3 MB in the beginning and 201.3 MB in the end (delta: 66.1 MB). Free memory was 82.3 MB in the beginning and 178.4 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:59,417 INFO L168 Benchmark]: RCFGBuilder took 210.96 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 167.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:59,418 INFO L168 Benchmark]: TraceAbstraction took 19388.15 ms. Allocated memory was 201.3 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 167.0 MB in the beginning and 310.8 MB in the end (delta: -143.8 MB). Peak memory consumption was 947.8 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:59,421 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 218.21 ms. Allocated memory is still 135.3 MB. Free memory was 91.3 MB in the beginning and 82.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.21 ms. Allocated memory was 135.3 MB in the beginning and 201.3 MB in the end (delta: 66.1 MB). Free memory was 82.3 MB in the beginning and 178.4 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 210.96 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 167.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19388.15 ms. Allocated memory was 201.3 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 167.0 MB in the beginning and 310.8 MB in the end (delta: -143.8 MB). Peak memory consumption was 947.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 31]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 19.3s OverallTime, 15 OverallIterations, 127 TraceHistogramMax, 4.7s AutomataDifference, 0.0s DeadEndRemovalTime, 1.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 426 SDtfs, 532 SDslu, 2528 SDs, 0 SdLazy, 3220 SolverSat, 635 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6053 GetRequests, 5708 SyntacticMatches, 58 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 66 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 218 PreInvPairs, 894 NumberOfFragments, 170 HoareAnnotationTreeSize, 218 FomulaSimplifications, 12874 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 8 FomulaSimplificationsInter, 9184 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 11113 NumberOfCodeBlocks, 9731 NumberOfCodeBlocksAsserted, 243 NumberOfCheckSat, 11085 ConstructedInterpolants, 0 QuantifiedInterpolants, 12953975 SizeOfPredicates, 85 NumberOfNonLiveVariables, 9150 ConjunctsInSsa, 609 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 412032/466426 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...