java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/peterson_4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:33:16,316 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:33:16,317 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:33:16,330 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:33:16,330 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:33:16,334 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:33:16,335 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:33:16,337 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:33:16,338 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:33:16,339 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:33:16,340 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:33:16,340 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:33:16,341 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:33:16,342 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:33:16,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:33:16,343 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:33:16,346 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:33:16,348 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:33:16,360 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:33:16,361 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:33:16,362 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:33:16,364 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:33:16,364 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:33:16,364 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:33:16,365 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:33:16,366 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:33:16,366 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:33:16,367 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:33:16,368 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:33:16,368 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:33:16,369 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:33:16,369 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:33:16,369 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:33:16,370 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:33:16,371 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:33:16,371 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:33:16,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:33:16,393 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:33:16,393 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:33:16,393 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:33:16,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:33:16,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:33:16,395 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:33:16,395 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:33:16,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:33:16,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:33:16,396 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:33:16,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:33:16,396 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:33:16,397 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:33:16,397 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:33:16,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:33:16,397 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:33:16,402 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:33:16,402 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:33:16,453 INFO ]: Repository-Root is: /tmp [2018-06-22 09:33:16,468 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:33:16,475 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:33:16,476 INFO ]: Initializing SmtParser... [2018-06-22 09:33:16,476 INFO ]: SmtParser initialized [2018-06-22 09:33:16,477 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/peterson_4.smt2 [2018-06-22 09:33:16,478 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 09:33:16,570 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/peterson_4.smt2 unknown [2018-06-22 09:33:17,248 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/peterson_4.smt2 [2018-06-22 09:33:17,252 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:33:17,258 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:33:17,258 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:33:17,258 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:33:17,259 INFO ]: ChcToBoogie initialized [2018-06-22 09:33:17,262 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:33:17" (1/1) ... [2018-06-22 09:33:17,396 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17 Unit [2018-06-22 09:33:17,396 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:33:17,398 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:33:17,398 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:33:17,398 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:33:17,426 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17" (1/1) ... [2018-06-22 09:33:17,426 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17" (1/1) ... [2018-06-22 09:33:17,455 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17" (1/1) ... [2018-06-22 09:33:17,455 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17" (1/1) ... [2018-06-22 09:33:17,487 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17" (1/1) ... [2018-06-22 09:33:17,489 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17" (1/1) ... [2018-06-22 09:33:17,493 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17" (1/1) ... [2018-06-22 09:33:17,508 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:33:17,508 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:33:17,508 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:33:17,508 INFO ]: RCFGBuilder initialized [2018-06-22 09:33:17,509 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 09:33:17,536 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:33:17,536 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:33:17,536 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:33:17,536 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:33:17,536 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:33:17,536 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:33:18,159 INFO ]: Using library mode [2018-06-22 09:33:18,160 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:33:18 BoogieIcfgContainer [2018-06-22 09:33:18,160 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:33:18,164 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:33:18,164 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:33:18,169 INFO ]: TraceAbstraction initialized [2018-06-22 09:33:18,169 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:33:17" (1/3) ... [2018-06-22 09:33:18,170 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a2c361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:33:18, skipping insertion in model container [2018-06-22 09:33:18,170 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:33:17" (2/3) ... [2018-06-22 09:33:18,170 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a2c361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:33:18, skipping insertion in model container [2018-06-22 09:33:18,170 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:33:18" (3/3) ... [2018-06-22 09:33:18,172 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:33:18,181 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:33:18,190 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:33:18,245 INFO ]: Using default assertion order modulation [2018-06-22 09:33:18,247 INFO ]: Interprodecural is true [2018-06-22 09:33:18,248 INFO ]: Hoare is false [2018-06-22 09:33:18,248 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:33:18,248 INFO ]: Backedges is TWOTRACK [2018-06-22 09:33:18,248 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:33:18,248 INFO ]: Difference is false [2018-06-22 09:33:18,248 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:33:18,248 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:33:18,264 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:33:18,276 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:33:18,277 INFO ]: Found error trace [2018-06-22 09:33:18,277 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:33:18,278 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:33:18,283 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 09:33:18,285 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:33:18,286 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:33:18,332 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:33:18,332 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:33:18,332 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:33:18,509 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:33:18,704 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:33:18,706 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:33:18,706 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:33:18,707 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:33:18,718 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:33:18,719 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:33:18,721 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:33:18,802 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:33:18,802 INFO ]: Finished difference Result 4 states and 4 transitions. [2018-06-22 09:33:18,805 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:33:18,807 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:33:18,807 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:33:18,815 INFO ]: With dead ends: 4 [2018-06-22 09:33:18,815 INFO ]: Without dead ends: 0 [2018-06-22 09:33:18,819 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:33:18,837 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 09:33:18,843 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 09:33:18,844 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 09:33:18,844 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 09:33:18,845 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-22 09:33:18,845 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:33:18,845 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 09:33:18,845 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:33:18,845 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 09:33:18,845 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 09:33:18,852 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:33:18 BoogieIcfgContainer [2018-06-22 09:33:18,852 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:33:18,853 INFO ]: Toolchain (without parser) took 1599.76 ms. Allocated memory was 309.3 MB in the beginning and 327.2 MB in the end (delta: 17.8 MB). Free memory was 225.9 MB in the beginning and 232.7 MB in the end (delta: -6.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 3.6 GB. [2018-06-22 09:33:18,854 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:33:18,854 INFO ]: ChcToBoogie took 139.37 ms. Allocated memory is still 309.3 MB. Free memory was 225.9 MB in the beginning and 222.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:33:18,868 INFO ]: Boogie Preprocessor took 109.81 ms. Allocated memory is still 309.3 MB. Free memory was 222.0 MB in the beginning and 220.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:33:18,868 INFO ]: RCFGBuilder took 651.52 ms. Allocated memory was 309.3 MB in the beginning and 327.2 MB in the end (delta: 17.8 MB). Free memory was 219.0 MB in the beginning and 257.0 MB in the end (delta: -38.1 MB). Peak memory consumption was 36.2 MB. Max. memory is 3.6 GB. [2018-06-22 09:33:18,869 INFO ]: TraceAbstraction took 687.79 ms. Allocated memory is still 327.2 MB. Free memory was 257.0 MB in the beginning and 232.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 3.6 GB. [2018-06-22 09:33:18,871 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 139.37 ms. Allocated memory is still 309.3 MB. Free memory was 225.9 MB in the beginning and 222.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 109.81 ms. Allocated memory is still 309.3 MB. Free memory was 222.0 MB in the beginning and 220.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 651.52 ms. Allocated memory was 309.3 MB in the beginning and 327.2 MB in the end (delta: 17.8 MB). Free memory was 219.0 MB in the beginning and 257.0 MB in the end (delta: -38.1 MB). Peak memory consumption was 36.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 687.79 ms. Allocated memory is still 327.2 MB. Free memory was 257.0 MB in the beginning and 232.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3 SDtfs, 0 SDslu, 2 SDs, 0 SdLazy, 1 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/peterson_4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-33-18-882.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/peterson_4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-33-18-882.csv Received shutdown request...