java -Xss4m -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 0.1.23-14921ce [2018-06-25 17:05:24,883 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 17:05:24,886 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 17:05:24,901 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 17:05:24,901 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 17:05:24,905 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 17:05:24,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 17:05:24,909 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 17:05:24,910 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 17:05:24,913 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 17:05:24,914 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 17:05:24,914 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 17:05:24,915 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 17:05:24,919 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 17:05:24,929 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 17:05:24,930 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 17:05:24,932 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 17:05:24,934 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 17:05:24,936 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 17:05:24,942 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 17:05:24,943 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 17:05:24,946 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 17:05:24,946 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 17:05:24,946 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 17:05:24,950 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 17:05:24,952 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 17:05:24,953 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 17:05:24,953 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 17:05:24,956 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 17:05:24,956 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 17:05:24,957 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 17:05:24,957 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 17:05:24,958 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 17:05:24,959 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 17:05:24,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 17:05:24,964 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 17:05:24,992 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 17:05:24,992 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 17:05:24,993 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 17:05:24,993 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 17:05:24,995 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 17:05:24,995 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 17:05:24,995 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 17:05:24,996 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 17:05:24,996 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 17:05:24,996 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 17:05:24,996 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 17:05:24,997 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 17:05:24,997 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 17:05:24,997 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 17:05:24,997 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 17:05:24,997 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 17:05:24,998 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 17:05:24,999 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 17:05:24,999 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 17:05:24,999 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 17:05:25,000 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 17:05:25,001 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 17:05:25,001 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 17:05:25,053 INFO ]: Repository-Root is: /tmp [2018-06-25 17:05:25,074 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 17:05:25,078 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 17:05:25,080 INFO ]: Initializing SmtParser... [2018-06-25 17:05:25,080 INFO ]: SmtParser initialized [2018-06-25 17:05:25,081 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/peterson_4.smt2 [2018-06-25 17:05:25,082 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 [2018-06-25 17:05:25,179 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/peterson_4.smt2 unknown [2018-06-25 17:05:26,027 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/peterson_4.smt2 [2018-06-25 17:05:26,032 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 17:05:26,039 INFO ]: Walking toolchain with 4 elements. [2018-06-25 17:05:26,040 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 17:05:26,040 INFO ]: Initializing ChcToBoogie... [2018-06-25 17:05:26,040 INFO ]: ChcToBoogie initialized [2018-06-25 17:05:26,049 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:05:26" (1/1) ... [2018-06-25 17:05:26,183 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26 Unit [2018-06-25 17:05:26,184 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 17:05:26,184 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 17:05:26,184 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 17:05:26,184 INFO ]: Boogie Preprocessor initialized [2018-06-25 17:05:26,246 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26" (1/1) ... [2018-06-25 17:05:26,246 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26" (1/1) ... [2018-06-25 17:05:26,277 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26" (1/1) ... [2018-06-25 17:05:26,277 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26" (1/1) ... [2018-06-25 17:05:26,299 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26" (1/1) ... [2018-06-25 17:05:26,310 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26" (1/1) ... [2018-06-25 17:05:26,315 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26" (1/1) ... [2018-06-25 17:05:26,326 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 17:05:26,327 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 17:05:26,327 INFO ]: Initializing RCFGBuilder... [2018-06-25 17:05:26,327 INFO ]: RCFGBuilder initialized [2018-06-25 17:05:26,328 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26" (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) [2018-06-25 17:05:26,364 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 17:05:26,364 INFO ]: Found specification of procedure gotoProc [2018-06-25 17:05:26,364 INFO ]: Found implementation of procedure gotoProc [2018-06-25 17:05:26,364 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 17:05:26,364 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 17:05:26,364 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 [2018-06-25 17:05:27,059 INFO ]: Using library mode [2018-06-25 17:05:27,060 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:05:27 BoogieIcfgContainer [2018-06-25 17:05:27,060 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 17:05:27,061 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 17:05:27,061 INFO ]: Initializing TraceAbstraction... [2018-06-25 17:05:27,064 INFO ]: TraceAbstraction initialized [2018-06-25 17:05:27,064 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:05:26" (1/3) ... [2018-06-25 17:05:27,065 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e635b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 05:05:27, skipping insertion in model container [2018-06-25 17:05:27,065 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:05:26" (2/3) ... [2018-06-25 17:05:27,066 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e635b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 05:05:27, skipping insertion in model container [2018-06-25 17:05:27,066 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:05:27" (3/3) ... [2018-06-25 17:05:27,068 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 17:05:27,077 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 17:05:27,088 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 17:05:27,144 INFO ]: Using default assertion order modulation [2018-06-25 17:05:27,145 INFO ]: Interprodecural is true [2018-06-25 17:05:27,145 INFO ]: Hoare is false [2018-06-25 17:05:27,145 INFO ]: Compute interpolants for FPandBP [2018-06-25 17:05:27,145 INFO ]: Backedges is TWOTRACK [2018-06-25 17:05:27,145 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 17:05:27,145 INFO ]: Difference is false [2018-06-25 17:05:27,145 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 17:05:27,145 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 17:05:27,167 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 17:05:27,190 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 17:05:27,190 INFO ]: Found error trace [2018-06-25 17:05:27,191 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:05:27,191 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:05:27,198 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 17:05:27,200 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:05:27,201 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:05:27,255 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:05:27,255 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:05:27,255 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:05:27,425 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:05:27,606 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:05:27,609 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 17:05:27,609 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 17:05:27,611 INFO ]: Interpolant automaton has 3 states [2018-06-25 17:05:27,628 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 17:05:27,628 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 17:05:27,631 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 17:05:27,718 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:05:27,718 INFO ]: Finished difference Result 4 states and 4 transitions. [2018-06-25 17:05:27,722 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 17:05:27,723 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 17:05:27,723 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:05:27,734 INFO ]: With dead ends: 4 [2018-06-25 17:05:27,734 INFO ]: Without dead ends: 0 [2018-06-25 17:05:27,735 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 [2018-06-25 17:05:27,754 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 17:05:27,761 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 17:05:27,762 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 17:05:27,762 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 17:05:27,763 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-25 17:05:27,764 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:05:27,764 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 17:05:27,764 INFO ]: Interpolant automaton has 3 states. [2018-06-25 17:05:27,769 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 17:05:27,769 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 17:05:27,781 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 05:05:27 BoogieIcfgContainer [2018-06-25 17:05:27,781 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 17:05:27,782 INFO ]: Toolchain (without parser) took 1749.47 ms. Allocated memory was 296.2 MB in the beginning and 325.1 MB in the end (delta: 28.8 MB). Free memory was 210.7 MB in the beginning and 227.1 MB in the end (delta: -16.5 MB). Peak memory consumption was 12.4 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:27,783 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 296.2 MB. Free memory is still 260.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 17:05:27,784 INFO ]: ChcToBoogie took 143.91 ms. Allocated memory is still 296.2 MB. Free memory was 210.7 MB in the beginning and 206.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:27,784 INFO ]: Boogie Preprocessor took 142.12 ms. Allocated memory is still 296.2 MB. Free memory was 206.7 MB in the beginning and 204.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:27,785 INFO ]: RCFGBuilder took 733.06 ms. Allocated memory was 296.2 MB in the beginning and 325.1 MB in the end (delta: 28.8 MB). Free memory was 202.7 MB in the beginning and 251.9 MB in the end (delta: -49.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:27,785 INFO ]: TraceAbstraction took 719.84 ms. Allocated memory is still 325.1 MB. Free memory was 251.9 MB in the beginning and 227.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 3.6 GB. [2018-06-25 17:05:27,799 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 296.2 MB. Free memory is still 260.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 143.91 ms. Allocated memory is still 296.2 MB. Free memory was 210.7 MB in the beginning and 206.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 142.12 ms. Allocated memory is still 296.2 MB. Free memory was 206.7 MB in the beginning and 204.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 733.06 ms. Allocated memory was 296.2 MB in the beginning and 325.1 MB in the end (delta: 28.8 MB). Free memory was 202.7 MB in the beginning and 251.9 MB in the end (delta: -49.1 MB). Peak memory consumption was 33.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 719.84 ms. Allocated memory is still 325.1 MB. Free memory was 251.9 MB in the beginning and 227.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 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-0-2018-06-25_17-05-27-813.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-0-2018-06-25_17-05-27-813.csv Received shutdown request...