java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/ILLINOIS_2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 15:48:20,693 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 15:48:20,695 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 15:48:20,707 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 15:48:20,708 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 15:48:20,709 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 15:48:20,710 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 15:48:20,712 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 15:48:20,714 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 15:48:20,715 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 15:48:20,716 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 15:48:20,716 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 15:48:20,717 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 15:48:20,718 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 15:48:20,718 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 15:48:20,719 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 15:48:20,721 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 15:48:20,723 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 15:48:20,725 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 15:48:20,726 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 15:48:20,727 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 15:48:20,734 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 15:48:20,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 15:48:20,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 15:48:20,736 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 15:48:20,737 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 15:48:20,738 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 15:48:20,739 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 15:48:20,740 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 15:48:20,740 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 15:48:20,741 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 15:48:20,742 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 15:48:20,751 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 15:48:20,752 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 15:48:20,753 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 15:48:20,753 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 15:48:20,780 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 15:48:20,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 15:48:20,781 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 15:48:20,781 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 15:48:20,782 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 15:48:20,783 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 15:48:20,783 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 15:48:20,783 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 15:48:20,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 15:48:20,783 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 15:48:20,784 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 15:48:20,784 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 15:48:20,784 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 15:48:20,784 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 15:48:20,784 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 15:48:20,784 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 15:48:20,785 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 15:48:20,788 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 15:48:20,788 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 15:48:20,846 INFO ]: Repository-Root is: /tmp [2018-06-18 15:48:20,865 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 15:48:20,872 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 15:48:20,873 INFO ]: Initializing SmtParser... [2018-06-18 15:48:20,874 INFO ]: SmtParser initialized [2018-06-18 15:48:20,874 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ILLINOIS_2.smt2 [2018-06-18 15:48:20,876 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 [2018-06-18 15:48:20,973 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ILLINOIS_2.smt2 unknown [2018-06-18 15:48:21,473 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ILLINOIS_2.smt2 [2018-06-18 15:48:21,478 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 15:48:21,484 INFO ]: Walking toolchain with 4 elements. [2018-06-18 15:48:21,485 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 15:48:21,485 INFO ]: Initializing ChcToBoogie... [2018-06-18 15:48:21,485 INFO ]: ChcToBoogie initialized [2018-06-18 15:48:21,492 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:48:21" (1/1) ... [2018-06-18 15:48:21,680 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21 Unit [2018-06-18 15:48:21,681 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 15:48:21,684 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 15:48:21,684 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 15:48:21,684 INFO ]: Boogie Preprocessor initialized [2018-06-18 15:48:21,705 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21" (1/1) ... [2018-06-18 15:48:21,705 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21" (1/1) ... [2018-06-18 15:48:21,733 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21" (1/1) ... [2018-06-18 15:48:21,734 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21" (1/1) ... [2018-06-18 15:48:21,755 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21" (1/1) ... [2018-06-18 15:48:21,756 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21" (1/1) ... [2018-06-18 15:48:21,760 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21" (1/1) ... [2018-06-18 15:48:21,764 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 15:48:21,765 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 15:48:21,765 INFO ]: Initializing RCFGBuilder... [2018-06-18 15:48:21,765 INFO ]: RCFGBuilder initialized [2018-06-18 15:48:21,766 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21" (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) [2018-06-18 15:48:21,793 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 15:48:21,793 INFO ]: Found specification of procedure False [2018-06-18 15:48:21,793 INFO ]: Found implementation of procedure False [2018-06-18 15:48:21,793 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 15:48:21,793 INFO ]: Found specification of procedure state [2018-06-18 15:48:21,793 INFO ]: Found implementation of procedure state [2018-06-18 15:48:21,793 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 15:48:21,793 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 15:48:21,793 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 [2018-06-18 15:48:22,309 INFO ]: Using library mode [2018-06-18 15:48:22,310 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:48:22 BoogieIcfgContainer [2018-06-18 15:48:22,310 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 15:48:22,312 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 15:48:22,312 INFO ]: Initializing TraceAbstraction... [2018-06-18 15:48:22,321 INFO ]: TraceAbstraction initialized [2018-06-18 15:48:22,321 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 03:48:21" (1/3) ... [2018-06-18 15:48:22,322 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dfb224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 03:48:22, skipping insertion in model container [2018-06-18 15:48:22,322 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 03:48:21" (2/3) ... [2018-06-18 15:48:22,323 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dfb224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 03:48:22, skipping insertion in model container [2018-06-18 15:48:22,323 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 03:48:22" (3/3) ... [2018-06-18 15:48:22,325 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 15:48:22,336 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 15:48:22,350 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 15:48:22,402 INFO ]: Using default assertion order modulation [2018-06-18 15:48:22,403 INFO ]: Interprodecural is true [2018-06-18 15:48:22,403 INFO ]: Hoare is false [2018-06-18 15:48:22,403 INFO ]: Compute interpolants for FPandBP [2018-06-18 15:48:22,403 INFO ]: Backedges is TWOTRACK [2018-06-18 15:48:22,403 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 15:48:22,403 INFO ]: Difference is false [2018-06-18 15:48:22,403 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 15:48:22,403 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 15:48:22,422 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 15:48:22,439 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 15:48:22,439 INFO ]: Found error trace [2018-06-18 15:48:22,442 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 15:48:22,442 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 15:48:22,448 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-18 15:48:22,450 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 15:48:22,451 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 15:48:22,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:48:22,500 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 15:48:22,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 15:48:22,657 INFO ]: Conjunction of SSA is unsat [2018-06-18 15:48:22,668 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 15:48:22,894 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 15:48:22,897 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 15:48:22,897 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 15:48:22,900 INFO ]: Interpolant automaton has 4 states [2018-06-18 15:48:22,917 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 15:48:22,918 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 15:48:22,920 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 15:48:23,075 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 15:48:23,075 INFO ]: Finished difference Result 7 states and 8 transitions. [2018-06-18 15:48:23,076 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 15:48:23,078 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 15:48:23,078 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 15:48:23,088 INFO ]: With dead ends: 7 [2018-06-18 15:48:23,088 INFO ]: Without dead ends: 0 [2018-06-18 15:48:23,092 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 15:48:23,113 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 15:48:23,117 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 15:48:23,118 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 15:48:23,118 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 15:48:23,119 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-18 15:48:23,119 INFO ]: Finished accepts. word is rejected. [2018-06-18 15:48:23,119 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 15:48:23,119 INFO ]: Interpolant automaton has 4 states. [2018-06-18 15:48:23,119 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 15:48:23,119 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 15:48:23,125 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 03:48:23 BoogieIcfgContainer [2018-06-18 15:48:23,125 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 15:48:23,126 INFO ]: Toolchain (without parser) took 1647.87 ms. Allocated memory was 304.6 MB in the beginning and 332.9 MB in the end (delta: 28.3 MB). Free memory was 235.0 MB in the beginning and 283.9 MB in the end (delta: -48.9 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 15:48:23,128 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 304.6 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 15:48:23,128 INFO ]: ChcToBoogie took 198.43 ms. Allocated memory is still 304.6 MB. Free memory was 235.0 MB in the beginning and 229.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:48:23,128 INFO ]: Boogie Preprocessor took 80.76 ms. Allocated memory is still 304.6 MB. Free memory was 229.0 MB in the beginning and 227.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:48:23,129 INFO ]: RCFGBuilder took 545.18 ms. Allocated memory is still 304.6 MB. Free memory was 227.1 MB in the beginning and 195.1 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-18 15:48:23,129 INFO ]: TraceAbstraction took 813.50 ms. Allocated memory was 304.6 MB in the beginning and 332.9 MB in the end (delta: 28.3 MB). Free memory was 195.1 MB in the beginning and 283.9 MB in the end (delta: -88.8 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 15:48:23,132 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 304.6 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 198.43 ms. Allocated memory is still 304.6 MB. Free memory was 235.0 MB in the beginning and 229.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 80.76 ms. Allocated memory is still 304.6 MB. Free memory was 229.0 MB in the beginning and 227.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 545.18 ms. Allocated memory is still 304.6 MB. Free memory was 227.1 MB in the beginning and 195.1 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 813.50 ms. Allocated memory was 304.6 MB in the beginning and 332.9 MB in the end (delta: 28.3 MB). Free memory was 195.1 MB in the beginning and 283.9 MB in the end (delta: -88.8 MB). There was no memory consumed. 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.2s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 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/ILLINOIS_2.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_15-48-23-142.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ILLINOIS_2.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_15-48-23-142.csv Received shutdown request...