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-simple/fibo_2calls_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 06:26:47,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 06:26:47,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 06:26:47,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 06:26:47,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 06:26:47,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 06:26:47,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 06:26:47,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 06:26:47,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 06:26:47,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 06:26:47,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 06:26:47,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 06:26:47,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 06:26:47,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 06:26:47,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 06:26:47,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 06:26:47,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 06:26:47,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 06:26:47,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 06:26:47,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 06:26:47,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 06:26:47,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 06:26:47,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 06:26:47,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 06:26:47,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 06:26:47,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 06:26:47,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 06:26:47,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 06:26:47,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 06:26:47,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 06:26:47,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 06:26:47,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 06:26:47,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 06:26:47,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 06:26:47,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 06:26:47,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 06:26:47,523 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 06:26:47,561 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 06:26:47,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 06:26:47,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 06:26:47,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 06:26:47,566 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 06:26:47,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 06:26:47,567 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 06:26:47,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 06:26:47,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 06:26:47,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 06:26:47,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 06:26:47,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 06:26:47,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 06:26:47,570 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 06:26:47,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 06:26:47,571 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 06:26:47,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 06:26:47,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 06:26:47,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 06:26:47,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 06:26:47,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 06:26:47,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:26:47,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 06:26:47,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 06:26:47,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 06:26:47,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 06:26:47,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 06:26:47,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 06:26:47,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 06:26:47,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 06:26:47,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 06:26:47,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 06:26:47,680 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 06:26:47,681 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 06:26:47,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2019-09-08 06:26:47,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc9cdb65/acf231540f6a47f2a6d3fa906b7596ee/FLAG60f2e824c [2019-09-08 06:26:48,433 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 06:26:48,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2019-09-08 06:26:48,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc9cdb65/acf231540f6a47f2a6d3fa906b7596ee/FLAG60f2e824c [2019-09-08 06:26:48,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc9cdb65/acf231540f6a47f2a6d3fa906b7596ee [2019-09-08 06:26:48,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 06:26:48,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 06:26:48,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 06:26:48,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 06:26:48,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 06:26:48,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:26:48" (1/1) ... [2019-09-08 06:26:48,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69700df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:48, skipping insertion in model container [2019-09-08 06:26:48,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:26:48" (1/1) ... [2019-09-08 06:26:48,832 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 06:26:48,857 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 06:26:49,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:26:49,108 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 06:26:49,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:26:49,148 INFO L192 MainTranslator]: Completed translation [2019-09-08 06:26:49,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49 WrapperNode [2019-09-08 06:26:49,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 06:26:49,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 06:26:49,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 06:26:49,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 06:26:49,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49" (1/1) ... [2019-09-08 06:26:49,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49" (1/1) ... [2019-09-08 06:26:49,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49" (1/1) ... [2019-09-08 06:26:49,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49" (1/1) ... [2019-09-08 06:26:49,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49" (1/1) ... [2019-09-08 06:26:49,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49" (1/1) ... [2019-09-08 06:26:49,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49" (1/1) ... [2019-09-08 06:26:49,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 06:26:49,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 06:26:49,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 06:26:49,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 06:26:49,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49" (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 06:26:49,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 06:26:49,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 06:26:49,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2019-09-08 06:26:49,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2019-09-08 06:26:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 06:26:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 06:26:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 06:26:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2019-09-08 06:26:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2019-09-08 06:26:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 06:26:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 06:26:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 06:26:49,627 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 06:26:49,627 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 06:26:49,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:26:49 BoogieIcfgContainer [2019-09-08 06:26:49,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 06:26:49,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 06:26:49,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 06:26:49,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 06:26:49,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:26:48" (1/3) ... [2019-09-08 06:26:49,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799951a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:26:49, skipping insertion in model container [2019-09-08 06:26:49,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:26:49" (2/3) ... [2019-09-08 06:26:49,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799951a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:26:49, skipping insertion in model container [2019-09-08 06:26:49,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:26:49" (3/3) ... [2019-09-08 06:26:49,640 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2019-09-08 06:26:49,655 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 06:26:49,666 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 06:26:49,700 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 06:26:49,783 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 06:26:49,784 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 06:26:49,785 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 06:26:49,785 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 06:26:49,785 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 06:26:49,785 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 06:26:49,786 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 06:26:49,786 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 06:26:49,786 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 06:26:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-08 06:26:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-08 06:26:49,835 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:49,836 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:49,840 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:49,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:49,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2019-09-08 06:26:49,853 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:49,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:49,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:49,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:49,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:50,049 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 06:26:50,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:26:50,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:26:50,058 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:26:50,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:26:50,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:26:50,073 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2019-09-08 06:26:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:50,215 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2019-09-08 06:26:50,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:26:50,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-08 06:26:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:50,231 INFO L225 Difference]: With dead ends: 44 [2019-09-08 06:26:50,231 INFO L226 Difference]: Without dead ends: 30 [2019-09-08 06:26:50,235 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 06:26:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-08 06:26:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-09-08 06:26:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-08 06:26:50,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-09-08 06:26:50,289 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2019-09-08 06:26:50,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:50,289 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-09-08 06:26:50,290 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:26:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-09-08 06:26:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-08 06:26:50,292 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:50,292 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:50,293 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:50,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:50,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2019-09-08 06:26:50,294 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:50,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:50,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:50,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:50,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:50,347 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 06:26:50,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:26:50,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:26:50,350 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:26:50,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:26:50,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:26:50,352 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2019-09-08 06:26:50,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:50,452 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-09-08 06:26:50,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:26:50,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-08 06:26:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:50,456 INFO L225 Difference]: With dead ends: 36 [2019-09-08 06:26:50,458 INFO L226 Difference]: Without dead ends: 32 [2019-09-08 06:26:50,461 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 06:26:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-08 06:26:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-09-08 06:26:50,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-08 06:26:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-09-08 06:26:50,481 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2019-09-08 06:26:50,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:50,482 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-09-08 06:26:50,482 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:26:50,482 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-09-08 06:26:50,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-08 06:26:50,484 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:50,484 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:50,485 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:50,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2019-09-08 06:26:50,486 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:50,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:50,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:50,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:50,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 06:26:50,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:26:50,603 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:26:50,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:50,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 06:26:50,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:26:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 06:26:50,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:26:50,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2019-09-08 06:26:50,844 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 06:26:50,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 06:26:50,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:26:50,845 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states. [2019-09-08 06:26:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:51,169 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2019-09-08 06:26:51,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 06:26:51,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2019-09-08 06:26:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:51,173 INFO L225 Difference]: With dead ends: 58 [2019-09-08 06:26:51,173 INFO L226 Difference]: Without dead ends: 34 [2019-09-08 06:26:51,175 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-09-08 06:26:51,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-08 06:26:51,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-09-08 06:26:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-08 06:26:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2019-09-08 06:26:51,194 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2019-09-08 06:26:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:51,197 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-09-08 06:26:51,197 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 06:26:51,197 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2019-09-08 06:26:51,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-08 06:26:51,202 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:51,203 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:51,203 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:51,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:51,204 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2019-09-08 06:26:51,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:51,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:51,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:51,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:51,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 06:26:51,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:26:51,366 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 06:26:51,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:51,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 06:26:51,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:26:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 06:26:51,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:26:51,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-09-08 06:26:51,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 06:26:51,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 06:26:51,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 06:26:51,437 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2019-09-08 06:26:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:51,613 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2019-09-08 06:26:51,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 06:26:51,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-09-08 06:26:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:51,616 INFO L225 Difference]: With dead ends: 43 [2019-09-08 06:26:51,617 INFO L226 Difference]: Without dead ends: 39 [2019-09-08 06:26:51,621 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:26:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-08 06:26:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-09-08 06:26:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-08 06:26:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-09-08 06:26:51,649 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2019-09-08 06:26:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:51,649 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-09-08 06:26:51,649 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 06:26:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2019-09-08 06:26:51,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-08 06:26:51,652 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:51,652 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:51,652 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:51,653 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2019-09-08 06:26:51,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:51,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:51,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:51,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:51,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 06:26:51,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:26:51,761 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:26:51,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:26:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:51,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 06:26:51,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:26:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 06:26:51,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:26:51,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 10 [2019-09-08 06:26:51,937 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 06:26:51,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 06:26:51,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-08 06:26:51,940 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 10 states. [2019-09-08 06:26:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:52,275 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2019-09-08 06:26:52,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 06:26:52,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2019-09-08 06:26:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:52,279 INFO L225 Difference]: With dead ends: 70 [2019-09-08 06:26:52,279 INFO L226 Difference]: Without dead ends: 39 [2019-09-08 06:26:52,285 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-09-08 06:26:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-08 06:26:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-08 06:26:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-08 06:26:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-09-08 06:26:52,298 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 39 [2019-09-08 06:26:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:52,299 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-09-08 06:26:52,299 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 06:26:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2019-09-08 06:26:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-08 06:26:52,303 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:52,303 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:52,304 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2019-09-08 06:26:52,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:52,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:52,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:52,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:52,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 06:26:52,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:26:52,500 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:26:52,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:26:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:52,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 06:26:52,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:26:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 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 06:26:52,659 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:26:52,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2019-09-08 06:26:52,664 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-08 06:26:52,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-08 06:26:52,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-09-08 06:26:52,666 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 14 states. [2019-09-08 06:26:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:53,349 INFO L93 Difference]: Finished difference Result 102 states and 162 transitions. [2019-09-08 06:26:53,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-08 06:26:53,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2019-09-08 06:26:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:53,353 INFO L225 Difference]: With dead ends: 102 [2019-09-08 06:26:53,353 INFO L226 Difference]: Without dead ends: 69 [2019-09-08 06:26:53,355 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2019-09-08 06:26:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-09-08 06:26:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2019-09-08 06:26:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-09-08 06:26:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2019-09-08 06:26:53,392 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 40 [2019-09-08 06:26:53,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:53,393 INFO L475 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2019-09-08 06:26:53,393 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-08 06:26:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2019-09-08 06:26:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-08 06:26:53,404 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:53,404 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:53,405 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:53,406 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2019-09-08 06:26:53,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:53,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:53,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:53,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:53,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-08 06:26:53,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:26:53,558 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 06:26:53,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:53,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 06:26:53,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:26:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-08 06:26:53,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:26:53,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2019-09-08 06:26:53,697 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 06:26:53,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 06:26:53,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-09-08 06:26:53,698 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand 12 states. [2019-09-08 06:26:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:53,997 INFO L93 Difference]: Finished difference Result 106 states and 197 transitions. [2019-09-08 06:26:53,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 06:26:53,997 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2019-09-08 06:26:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:54,001 INFO L225 Difference]: With dead ends: 106 [2019-09-08 06:26:54,002 INFO L226 Difference]: Without dead ends: 102 [2019-09-08 06:26:54,003 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2019-09-08 06:26:54,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-09-08 06:26:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 68. [2019-09-08 06:26:54,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-09-08 06:26:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 110 transitions. [2019-09-08 06:26:54,028 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 110 transitions. Word has length 54 [2019-09-08 06:26:54,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:54,028 INFO L475 AbstractCegarLoop]: Abstraction has 68 states and 110 transitions. [2019-09-08 06:26:54,029 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 06:26:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 110 transitions. [2019-09-08 06:26:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 06:26:54,032 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:54,032 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:54,033 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:54,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1229769625, now seen corresponding path program 1 times [2019-09-08 06:26:54,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:54,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:54,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:54,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:54,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-09-08 06:26:54,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:26:54,192 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 06:26:54,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:54,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 06:26:54,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:26:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-08 06:26:54,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:26:54,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2019-09-08 06:26:54,381 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 06:26:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 06:26:54,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-09-08 06:26:54,382 INFO L87 Difference]: Start difference. First operand 68 states and 110 transitions. Second operand 15 states. [2019-09-08 06:26:55,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:55,138 INFO L93 Difference]: Finished difference Result 167 states and 346 transitions. [2019-09-08 06:26:55,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-08 06:26:55,138 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2019-09-08 06:26:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:55,143 INFO L225 Difference]: With dead ends: 167 [2019-09-08 06:26:55,144 INFO L226 Difference]: Without dead ends: 105 [2019-09-08 06:26:55,148 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2019-09-08 06:26:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-09-08 06:26:55,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2019-09-08 06:26:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-09-08 06:26:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 154 transitions. [2019-09-08 06:26:55,172 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 154 transitions. Word has length 96 [2019-09-08 06:26:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:55,173 INFO L475 AbstractCegarLoop]: Abstraction has 99 states and 154 transitions. [2019-09-08 06:26:55,173 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 06:26:55,173 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 154 transitions. [2019-09-08 06:26:55,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-08 06:26:55,177 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:55,177 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:55,178 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:55,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:55,178 INFO L82 PathProgramCache]: Analyzing trace with hash -243917290, now seen corresponding path program 1 times [2019-09-08 06:26:55,179 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:55,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:55,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:55,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:55,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 75 proven. 78 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-09-08 06:26:55,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:26:55,440 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 06:26:55,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:55,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 06:26:55,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:26:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 67 proven. 55 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2019-09-08 06:26:55,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:26:55,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 19 [2019-09-08 06:26:55,722 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 06:26:55,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 06:26:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2019-09-08 06:26:55,724 INFO L87 Difference]: Start difference. First operand 99 states and 154 transitions. Second operand 19 states. [2019-09-08 06:26:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:56,754 INFO L93 Difference]: Finished difference Result 258 states and 532 transitions. [2019-09-08 06:26:56,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-08 06:26:56,755 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 111 [2019-09-08 06:26:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:56,758 INFO L225 Difference]: With dead ends: 258 [2019-09-08 06:26:56,759 INFO L226 Difference]: Without dead ends: 103 [2019-09-08 06:26:56,763 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2019-09-08 06:26:56,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-09-08 06:26:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2019-09-08 06:26:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-09-08 06:26:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2019-09-08 06:26:56,783 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 111 [2019-09-08 06:26:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:56,784 INFO L475 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2019-09-08 06:26:56,784 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-08 06:26:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2019-09-08 06:26:56,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-09-08 06:26:56,787 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:56,787 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:56,788 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:56,788 INFO L82 PathProgramCache]: Analyzing trace with hash -878903457, now seen corresponding path program 2 times [2019-09-08 06:26:56,788 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:56,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:56,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:56,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:26:56,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:26:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 89 proven. 22 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2019-09-08 06:26:56,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:26:56,982 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 06:26:57,000 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 06:26:57,042 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 06:26:57,043 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:26:57,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-08 06:26:57,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:26:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 87 proven. 23 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 06:26:57,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:26:57,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 12 [2019-09-08 06:26:57,125 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 06:26:57,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 06:26:57,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-09-08 06:26:57,126 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand 12 states. [2019-09-08 06:26:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:26:57,286 INFO L93 Difference]: Finished difference Result 109 states and 140 transitions. [2019-09-08 06:26:57,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 06:26:57,286 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2019-09-08 06:26:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:26:57,290 INFO L225 Difference]: With dead ends: 109 [2019-09-08 06:26:57,290 INFO L226 Difference]: Without dead ends: 102 [2019-09-08 06:26:57,291 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-09-08 06:26:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-09-08 06:26:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2019-09-08 06:26:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-09-08 06:26:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2019-09-08 06:26:57,305 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 122 [2019-09-08 06:26:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:26:57,306 INFO L475 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2019-09-08 06:26:57,307 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 06:26:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2019-09-08 06:26:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-08 06:26:57,309 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:26:57,309 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:26:57,310 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:26:57,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:26:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1540036056, now seen corresponding path program 3 times [2019-09-08 06:26:57,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:26:57,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:26:57,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:57,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:26:57,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:26:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 06:26:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 06:26:57,388 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 06:26:57,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 06:26:57 BoogieIcfgContainer [2019-09-08 06:26:57,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 06:26:57,466 INFO L168 Benchmark]: Toolchain (without parser) took 8659.47 ms. Allocated memory was 133.7 MB in the beginning and 313.0 MB in the end (delta: 179.3 MB). Free memory was 90.0 MB in the beginning and 207.6 MB in the end (delta: -117.6 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2019-09-08 06:26:57,468 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 133.7 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 06:26:57,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.60 ms. Allocated memory is still 133.7 MB. Free memory was 89.6 MB in the beginning and 80.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-08 06:26:57,476 INFO L168 Benchmark]: Boogie Preprocessor took 157.67 ms. Allocated memory was 133.7 MB in the beginning and 199.2 MB in the end (delta: 65.5 MB). Free memory was 80.3 MB in the beginning and 176.4 MB in the end (delta: -96.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-08 06:26:57,477 INFO L168 Benchmark]: RCFGBuilder took 319.25 ms. Allocated memory is still 199.2 MB. Free memory was 175.8 MB in the beginning and 163.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-09-08 06:26:57,480 INFO L168 Benchmark]: TraceAbstraction took 7830.14 ms. Allocated memory was 199.2 MB in the beginning and 313.0 MB in the end (delta: 113.8 MB). Free memory was 163.8 MB in the beginning and 207.6 MB in the end (delta: -43.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. [2019-09-08 06:26:57,491 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 133.7 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.60 ms. Allocated memory is still 133.7 MB. Free memory was 89.6 MB in the beginning and 80.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.67 ms. Allocated memory was 133.7 MB in the beginning and 199.2 MB in the end (delta: 65.5 MB). Free memory was 80.3 MB in the beginning and 176.4 MB in the end (delta: -96.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 319.25 ms. Allocated memory is still 199.2 MB. Free memory was 175.8 MB in the beginning and 163.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7830.14 ms. Allocated memory was 199.2 MB in the beginning and 313.0 MB in the end (delta: 113.8 MB). Free memory was 163.8 MB in the beginning and 207.6 MB in the end (delta: -43.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 5; VAL [x=5] [L37] CALL, EXPR fibo1(x) VAL [\old(n)=5] [L8] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L10] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L18] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L20] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L8] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L10] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L18] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L20] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 [L9] return 0; VAL [\old(n)=0, \result=0, n=0] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=5, fibo2(n-1)=3, n=5] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L18] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L20] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L23] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L18] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L20] COND TRUE n == 1 [L21] return 1; VAL [\old(n)=1, \result=1, n=1] [L13] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L13] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L18] COND TRUE n < 1 [L19] return 0; VAL [\old(n)=0, \result=0, n=0] [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L23] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1, n=1] [L23] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) VAL [\old(n)=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) VAL [fibo1(x)=5, x=5] [L37] int result = fibo1(x); [L38] COND TRUE result == 5 VAL [result=5, x=5] [L39] __VERIFIER_error() VAL [result=5, x=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. UNSAFE Result, 7.6s OverallTime, 11 OverallIterations, 10 TraceHistogramMax, 4.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 286 SDtfs, 354 SDslu, 1613 SDs, 0 SdLazy, 2144 SolverSat, 360 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 669 GetRequests, 518 SyntacticMatches, 3 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=8, 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, 10 MinimizatonAttempts, 69 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1166 NumberOfCodeBlocks, 1166 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1039 ConstructedInterpolants, 0 QuantifiedInterpolants, 143303 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1160 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 1473/1826 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...