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/id_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 06:27:35,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 06:27:35,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 06:27:35,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 06:27:35,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 06:27:35,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 06:27:35,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 06:27:35,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 06:27:35,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 06:27:35,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 06:27:35,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 06:27:35,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 06:27:35,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 06:27:35,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 06:27:35,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 06:27:35,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 06:27:35,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 06:27:35,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 06:27:35,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 06:27:35,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 06:27:35,305 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 06:27:35,326 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 06:27:35,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 06:27:35,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 06:27:35,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 06:27:35,329 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 06:27:35,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 06:27:35,330 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 06:27:35,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 06:27:35,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 06:27:35,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 06:27:35,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 06:27:35,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 06:27:35,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 06:27:35,333 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 06:27:35,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 06:27:35,333 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 06:27:35,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 06:27:35,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 06:27:35,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 06:27:35,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 06:27:35,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 06:27:35,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:27:35,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 06:27:35,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 06:27:35,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 06:27:35,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 06:27:35,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 06:27:35,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 06:27:35,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 06:27:35,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 06:27:35,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 06:27:35,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 06:27:35,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 06:27:35,415 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 06:27:35,416 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2019-09-08 06:27:35,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36877cb8c/cfc12552f91d400c85a9b4bac5623276/FLAGb4be438b6 [2019-09-08 06:27:35,968 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 06:27:35,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2019-09-08 06:27:35,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36877cb8c/cfc12552f91d400c85a9b4bac5623276/FLAGb4be438b6 [2019-09-08 06:27:36,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36877cb8c/cfc12552f91d400c85a9b4bac5623276 [2019-09-08 06:27:36,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 06:27:36,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 06:27:36,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 06:27:36,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 06:27:36,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 06:27:36,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:27:36" (1/1) ... [2019-09-08 06:27:36,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3959b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36, skipping insertion in model container [2019-09-08 06:27:36,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:27:36" (1/1) ... [2019-09-08 06:27:36,348 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 06:27:36,362 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 06:27:36,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:27:36,541 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 06:27:36,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:27:36,566 INFO L192 MainTranslator]: Completed translation [2019-09-08 06:27:36,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36 WrapperNode [2019-09-08 06:27:36,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 06:27:36,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 06:27:36,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 06:27:36,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 06:27:36,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36" (1/1) ... [2019-09-08 06:27:36,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36" (1/1) ... [2019-09-08 06:27:36,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36" (1/1) ... [2019-09-08 06:27:36,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36" (1/1) ... [2019-09-08 06:27:36,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36" (1/1) ... [2019-09-08 06:27:36,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36" (1/1) ... [2019-09-08 06:27:36,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36" (1/1) ... [2019-09-08 06:27:36,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 06:27:36,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 06:27:36,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 06:27:36,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 06:27:36,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36" (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 06:27:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 06:27:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 06:27:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-09-08 06:27:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 06:27:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-08 06:27:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 06:27:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-09-08 06:27:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 06:27:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 06:27:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 06:27:36,907 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 06:27:36,908 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 06:27:36,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:27:36 BoogieIcfgContainer [2019-09-08 06:27:36,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 06:27:36,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 06:27:36,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 06:27:36,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 06:27:36,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:27:36" (1/3) ... [2019-09-08 06:27:36,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4167f143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:27:36, skipping insertion in model container [2019-09-08 06:27:36,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:27:36" (2/3) ... [2019-09-08 06:27:36,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4167f143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:27:36, skipping insertion in model container [2019-09-08 06:27:36,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:27:36" (3/3) ... [2019-09-08 06:27:36,919 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2019-09-08 06:27:36,929 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 06:27:36,936 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 06:27:36,954 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 06:27:36,984 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 06:27:36,985 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 06:27:36,985 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 06:27:36,985 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 06:27:36,985 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 06:27:36,986 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 06:27:36,986 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 06:27:36,986 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 06:27:36,986 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 06:27:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-08 06:27:37,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-08 06:27:37,008 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:37,008 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:37,010 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:37,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2019-09-08 06:27:37,016 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:37,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:37,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:37,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,312 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 06:27:37,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:27:37,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:27:37,321 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:27:37,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:27:37,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:37,340 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2019-09-08 06:27:37,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:37,410 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-09-08 06:27:37,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:27:37,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-08 06:27:37,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:37,429 INFO L225 Difference]: With dead ends: 33 [2019-09-08 06:27:37,429 INFO L226 Difference]: Without dead ends: 19 [2019-09-08 06:27:37,436 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:37,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-08 06:27:37,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-08 06:27:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-08 06:27:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-09-08 06:27:37,505 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2019-09-08 06:27:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:37,507 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-09-08 06:27:37,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:27:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-09-08 06:27:37,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-08 06:27:37,510 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:37,512 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:37,515 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:37,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:37,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2019-09-08 06:27:37,518 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:37,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:37,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:37,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 06:27:37,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:27:37,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 06:27:37,705 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:27:37,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:27:37,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:37,706 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2019-09-08 06:27:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:37,736 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-08 06:27:37,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 06:27:37,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-08 06:27:37,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:37,739 INFO L225 Difference]: With dead ends: 25 [2019-09-08 06:27:37,739 INFO L226 Difference]: Without dead ends: 21 [2019-09-08 06:27:37,741 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:27:37,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-08 06:27:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-09-08 06:27:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-08 06:27:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-09-08 06:27:37,753 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 20 [2019-09-08 06:27:37,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:37,754 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-09-08 06:27:37,754 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:27:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-09-08 06:27:37,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-08 06:27:37,756 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:37,756 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:37,757 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:37,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:37,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times [2019-09-08 06:27:37,758 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:37,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:37,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:37,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 06:27:37,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:37,943 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 06:27:37,962 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 06:27:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:37,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 06:27:38,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 06:27:38,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:27:38,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-09-08 06:27:38,097 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 06:27:38,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 06:27:38,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:27:38,098 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 9 states. [2019-09-08 06:27:38,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:38,171 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-09-08 06:27:38,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:27:38,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2019-09-08 06:27:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:38,174 INFO L225 Difference]: With dead ends: 37 [2019-09-08 06:27:38,174 INFO L226 Difference]: Without dead ends: 25 [2019-09-08 06:27:38,175 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-08 06:27:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-08 06:27:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2019-09-08 06:27:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-08 06:27:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-08 06:27:38,182 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2019-09-08 06:27:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:38,183 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-08 06:27:38,183 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 06:27:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-08 06:27:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-08 06:27:38,184 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:38,185 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:38,185 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:38,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:38,185 INFO L82 PathProgramCache]: Analyzing trace with hash 405472645, now seen corresponding path program 2 times [2019-09-08 06:27:38,186 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:38,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:38,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:38,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:27:38,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 06:27:38,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:38,440 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:27:38,459 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-08 06:27:38,479 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 06:27:38,479 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:27:38,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 20 conjunts are in the unsatisfiable core [2019-09-08 06:27:38,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 06:27:38,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 06:27:38,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-09-08 06:27:38,545 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 06:27:38,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 06:27:38,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 06:27:38,546 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 12 states. [2019-09-08 06:27:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:38,653 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-09-08 06:27:38,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 06:27:38,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2019-09-08 06:27:38,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:38,655 INFO L225 Difference]: With dead ends: 41 [2019-09-08 06:27:38,656 INFO L226 Difference]: Without dead ends: 29 [2019-09-08 06:27:38,656 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-09-08 06:27:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-08 06:27:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-09-08 06:27:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-08 06:27:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-09-08 06:27:38,663 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 27 [2019-09-08 06:27:38,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:38,664 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-09-08 06:27:38,664 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 06:27:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-09-08 06:27:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-08 06:27:38,665 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:27:38,666 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:27:38,666 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:27:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:27:38,666 INFO L82 PathProgramCache]: Analyzing trace with hash -617031938, now seen corresponding path program 3 times [2019-09-08 06:27:38,667 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:27:38,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:27:38,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:38,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 06:27:38,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:27:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:27:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-08 06:27:38,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:27:38,847 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 06:27:38,870 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:27:38,883 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-08 06:27:38,884 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 06:27:38,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 06:27:38,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:27:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-09-08 06:27:38,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:27:38,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2019-09-08 06:27:38,968 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-08 06:27:38,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-08 06:27:38,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-09-08 06:27:38,969 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 14 states. [2019-09-08 06:27:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:27:39,117 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-09-08 06:27:39,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 06:27:39,119 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2019-09-08 06:27:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:27:39,119 INFO L225 Difference]: With dead ends: 33 [2019-09-08 06:27:39,119 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 06:27:39,121 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-09-08 06:27:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 06:27:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 06:27:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 06:27:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 06:27:39,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-09-08 06:27:39,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:27:39,122 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 06:27:39,122 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-08 06:27:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 06:27:39,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 06:27:39,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 06:27:39,153 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 06:27:39,154 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:27:39,154 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 06:27:39,154 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 06:27:39,154 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 06:27:39,154 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 06:27:39,155 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2019-09-08 06:27:39,155 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2019-09-08 06:27:39,155 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2019-09-08 06:27:39,155 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-09-08 06:27:39,155 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2019-09-08 06:27:39,155 INFO L446 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2019-09-08 06:27:39,155 INFO L443 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-09-08 06:27:39,156 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2019-09-08 06:27:39,156 INFO L443 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2019-09-08 06:27:39,156 INFO L443 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2019-09-08 06:27:39,156 INFO L446 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2019-09-08 06:27:39,156 INFO L443 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-09-08 06:27:39,158 INFO L446 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2019-09-08 06:27:39,158 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-08 06:27:39,159 INFO L443 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-09-08 06:27:39,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 06:27:39 BoogieIcfgContainer [2019-09-08 06:27:39,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 06:27:39,172 INFO L168 Benchmark]: Toolchain (without parser) took 2836.14 ms. Allocated memory was 134.2 MB in the beginning and 227.5 MB in the end (delta: 93.3 MB). Free memory was 90.8 MB in the beginning and 121.0 MB in the end (delta: -30.2 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:39,174 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 06:27:39,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.78 ms. Allocated memory is still 134.2 MB. Free memory was 90.6 MB in the beginning and 81.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:39,177 INFO L168 Benchmark]: Boogie Preprocessor took 115.57 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 81.6 MB in the beginning and 177.3 MB in the end (delta: -95.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:39,179 INFO L168 Benchmark]: RCFGBuilder took 228.05 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 166.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:39,180 INFO L168 Benchmark]: TraceAbstraction took 2255.52 ms. Allocated memory was 200.3 MB in the beginning and 227.5 MB in the end (delta: 27.3 MB). Free memory was 166.0 MB in the beginning and 121.0 MB in the end (delta: 45.0 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. [2019-09-08 06:27:39,189 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.78 ms. Allocated memory is still 134.2 MB. Free memory was 90.6 MB in the beginning and 81.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.57 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 81.6 MB in the beginning and 177.3 MB in the end (delta: -95.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 228.05 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 166.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2255.52 ms. Allocated memory was 200.3 MB in the beginning and 227.5 MB in the end (delta: 27.3 MB). Free memory was 166.0 MB in the beginning and 121.0 MB in the end (delta: 45.0 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 21 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 SDtfs, 14 SDslu, 567 SDs, 0 SdLazy, 179 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 195 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 14343 SizeOfPredicates, 7 NumberOfNonLiveVariables, 150 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 76/108 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...