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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e3_961.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:03:58,783 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:03:58,785 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:03:58,799 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:03:58,799 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:03:58,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:03:58,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:03:58,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:03:58,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:03:58,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:03:58,811 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:03:58,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:03:58,812 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:03:58,815 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:03:58,816 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:03:58,817 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:03:58,827 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:03:58,829 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:03:58,830 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:03:58,831 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:03:58,835 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:03:58,837 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:03:58,837 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:03:58,837 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:03:58,841 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:03:58,843 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:03:58,843 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:03:58,844 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:03:58,845 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:03:58,846 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:03:58,846 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:03:58,847 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:03:58,847 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:03:58,851 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:03:58,852 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:03:58,852 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 19:03:58,874 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:03:58,875 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:03:58,876 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:03:58,877 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:03:58,878 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:03:58,878 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:03:58,878 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:03:58,878 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:03:58,879 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:03:58,879 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:03:58,879 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:03:58,879 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:03:58,879 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:03:58,880 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:03:58,880 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:03:58,880 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:03:58,881 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:03:58,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:03:58,881 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:03:58,883 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:03:58,883 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:03:58,929 INFO ]: Repository-Root is: /tmp [2018-06-22 19:03:58,949 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:03:58,954 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:03:58,956 INFO ]: Initializing SmtParser... [2018-06-22 19:03:58,956 INFO ]: SmtParser initialized [2018-06-22 19:03:58,956 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e3_961.smt2 [2018-06-22 19:03:58,958 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 19:03:59,057 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e3_961.smt2 unknown [2018-06-22 19:03:59,572 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e3_961.smt2 [2018-06-22 19:03:59,576 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:03:59,582 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:03:59,583 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:03:59,583 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:03:59,583 INFO ]: ChcToBoogie initialized [2018-06-22 19:03:59,587 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:03:59" (1/1) ... [2018-06-22 19:03:59,689 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59 Unit [2018-06-22 19:03:59,689 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:03:59,690 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:03:59,690 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:03:59,690 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:03:59,721 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59" (1/1) ... [2018-06-22 19:03:59,722 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59" (1/1) ... [2018-06-22 19:03:59,740 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59" (1/1) ... [2018-06-22 19:03:59,740 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59" (1/1) ... [2018-06-22 19:03:59,745 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59" (1/1) ... [2018-06-22 19:03:59,756 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59" (1/1) ... [2018-06-22 19:03:59,758 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59" (1/1) ... [2018-06-22 19:03:59,761 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:03:59,761 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:03:59,761 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:03:59,761 INFO ]: RCFGBuilder initialized [2018-06-22 19:03:59,762 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59" (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 19:03:59,793 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:03:59,793 INFO ]: Found specification of procedure False [2018-06-22 19:03:59,793 INFO ]: Found implementation of procedure False [2018-06-22 19:03:59,793 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:03:59,793 INFO ]: Found specification of procedure state [2018-06-22 19:03:59,793 INFO ]: Found implementation of procedure state [2018-06-22 19:03:59,793 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:03:59,793 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:03:59,793 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 [2018-06-22 19:04:00,262 INFO ]: Using library mode [2018-06-22 19:04:00,263 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:04:00 BoogieIcfgContainer [2018-06-22 19:04:00,263 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:04:00,264 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:04:00,264 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:04:00,269 INFO ]: TraceAbstraction initialized [2018-06-22 19:04:00,270 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:03:59" (1/3) ... [2018-06-22 19:04:00,270 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738ba0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:04:00, skipping insertion in model container [2018-06-22 19:04:00,271 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:03:59" (2/3) ... [2018-06-22 19:04:00,271 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738ba0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:04:00, skipping insertion in model container [2018-06-22 19:04:00,271 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:04:00" (3/3) ... [2018-06-22 19:04:00,274 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:04:00,284 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:04:00,292 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:04:00,347 INFO ]: Using default assertion order modulation [2018-06-22 19:04:00,348 INFO ]: Interprodecural is true [2018-06-22 19:04:00,348 INFO ]: Hoare is false [2018-06-22 19:04:00,348 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:04:00,348 INFO ]: Backedges is TWOTRACK [2018-06-22 19:04:00,348 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:04:00,348 INFO ]: Difference is false [2018-06-22 19:04:00,348 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:04:00,348 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:04:00,367 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:04:00,383 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:04:00,383 INFO ]: Found error trace [2018-06-22 19:04:00,384 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:00,385 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:00,391 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:04:00,393 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:00,393 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:00,430 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:00,430 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:00,430 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:00,539 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:00,746 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:04:00,749 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:04:00,749 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:04:00,751 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:04:00,763 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:04:00,764 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:04:00,765 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:04:00,912 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:00,913 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:04:00,913 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:04:00,915 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:04:00,915 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:00,927 INFO ]: With dead ends: 13 [2018-06-22 19:04:00,927 INFO ]: Without dead ends: 13 [2018-06-22 19:04:00,929 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:04:00,948 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:04:00,972 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:04:00,973 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:04:00,982 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:04:00,984 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:04:00,984 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:00,984 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:04:00,984 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:04:00,984 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:04:00,985 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:04:00,985 INFO ]: Found error trace [2018-06-22 19:04:00,986 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:00,986 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:00,986 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:04:00,986 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:00,986 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:00,987 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:00,987 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:00,987 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:01,073 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:01,329 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:04:01,329 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:01,329 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-06-22 19:04:01,341 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:01,495 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:01,505 INFO ]: Computing forward predicates... [2018-06-22 19:04:01,823 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 4 [2018-06-22 19:04:02,029 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:04:02,052 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:02,052 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:04:02,053 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:04:02,053 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:04:02,053 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:04:02,054 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:04:02,474 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:02,474 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:04:02,475 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:04:02,475 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:04:02,475 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:02,476 INFO ]: With dead ends: 15 [2018-06-22 19:04:02,476 INFO ]: Without dead ends: 15 [2018-06-22 19:04:02,477 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:04:02,477 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:04:02,479 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:04:02,480 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:04:02,481 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:04:02,481 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:04:02,481 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:02,481 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:04:02,481 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:04:02,481 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:04:02,482 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:04:02,482 INFO ]: Found error trace [2018-06-22 19:04:02,482 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:02,482 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:02,482 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:04:02,482 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:02,482 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:02,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:02,483 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:02,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:02,561 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:03,128 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:04:03,128 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:03,128 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:04:03,144 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:04:03,295 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:04:03,296 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:03,300 INFO ]: Computing forward predicates... [2018-06-22 19:04:03,780 WARN ]: Spent 236.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 5 [2018-06-22 19:04:03,851 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:04:03,872 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:03,872 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:04:03,872 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:04:03,873 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:04:03,873 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:04:03,873 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:04:04,140 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:04,140 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:04:04,141 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:04:04,141 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:04:04,141 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:04,142 INFO ]: With dead ends: 17 [2018-06-22 19:04:04,142 INFO ]: Without dead ends: 17 [2018-06-22 19:04:04,142 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:04:04,142 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:04:04,145 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:04:04,145 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:04:04,146 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:04:04,146 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:04:04,146 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:04,146 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:04:04,146 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:04:04,146 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:04:04,147 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:04:04,147 INFO ]: Found error trace [2018-06-22 19:04:04,147 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:04,147 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:04,147 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:04:04,147 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:04,147 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:04,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:04,148 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:04:04,148 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:04,237 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:04,574 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-06-22 19:04:04,731 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2018-06-22 19:04:04,878 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:04:04,878 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:04,878 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:04:04,893 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:04:05,047 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:04:05,047 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:05,054 INFO ]: Computing forward predicates... [2018-06-22 19:04:05,648 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:04:05,843 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:04:06,037 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:04:07,757 WARN ]: Spent 796.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 58 [2018-06-22 19:04:08,016 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:04:08,052 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:08,052 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 19:04:08,052 INFO ]: Interpolant automaton has 16 states [2018-06-22 19:04:08,052 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 19:04:08,052 INFO ]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:04:08,053 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 19:04:08,654 WARN ]: Spent 541.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 123 [2018-06-22 19:04:09,084 WARN ]: Spent 300.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 96 [2018-06-22 19:04:09,647 WARN ]: Spent 526.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 115 [2018-06-22 19:04:10,295 WARN ]: Spent 594.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 119 [2018-06-22 19:04:10,363 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:10,363 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:04:10,364 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:04:10,364 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 19:04:10,364 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:10,364 INFO ]: With dead ends: 19 [2018-06-22 19:04:10,364 INFO ]: Without dead ends: 19 [2018-06-22 19:04:10,365 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-06-22 19:04:10,365 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:04:10,369 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:04:10,369 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:04:10,369 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:04:10,369 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:04:10,369 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:10,369 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:04:10,369 INFO ]: Interpolant automaton has 16 states. [2018-06-22 19:04:10,369 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:04:10,370 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:04:10,370 INFO ]: Found error trace [2018-06-22 19:04:10,370 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:10,370 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:10,370 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:04:10,370 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:10,370 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:10,371 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:10,371 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:04:10,371 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:10,504 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:11,588 WARN ]: Spent 177.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2018-06-22 19:04:11,698 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:04:11,698 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:11,698 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 19:04:11,707 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:04:11,915 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:04:11,915 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:11,932 INFO ]: Computing forward predicates... [2018-06-22 19:04:12,379 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-06-22 19:04:12,479 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:04:12,506 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:04:12,533 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:04:12,564 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:04:16,342 WARN ]: Spent 1.57 s on a formula simplification. DAG size of input: 211 DAG size of output: 49 [2018-06-22 19:04:16,753 WARN ]: Spent 215.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2018-06-22 19:04:18,053 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2018-06-22 19:04:18,118 INFO ]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:04:18,139 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:18,139 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-22 19:04:18,139 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:04:18,139 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:04:18,139 INFO ]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:04:18,139 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 19:04:18,837 WARN ]: Spent 649.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 147 [2018-06-22 19:04:19,010 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2018-06-22 19:04:19,869 WARN ]: Spent 805.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 180 [2018-06-22 19:04:20,626 WARN ]: Spent 710.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 167 [2018-06-22 19:04:21,465 WARN ]: Spent 788.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2018-06-22 19:04:22,593 WARN ]: Spent 893.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 153 [2018-06-22 19:04:22,613 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:22,613 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:04:22,613 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:04:22,613 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 19:04:22,613 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:22,613 INFO ]: With dead ends: 15 [2018-06-22 19:04:22,613 INFO ]: Without dead ends: 0 [2018-06-22 19:04:22,614 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2018-06-22 19:04:22,614 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:04:22,614 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:04:22,614 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:04:22,614 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:04:22,614 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 19:04:22,614 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:22,614 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:04:22,614 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:04:22,614 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:04:22,614 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:04:22,620 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:04:22 BoogieIcfgContainer [2018-06-22 19:04:22,620 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:04:22,621 INFO ]: Toolchain (without parser) took 23043.98 ms. Allocated memory was 309.3 MB in the beginning and 707.8 MB in the end (delta: 398.5 MB). Free memory was 250.8 MB in the beginning and 561.8 MB in the end (delta: -311.1 MB). Peak memory consumption was 87.4 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:22,624 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:04:22,624 INFO ]: ChcToBoogie took 106.82 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 247.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:22,624 INFO ]: Boogie Preprocessor took 71.15 ms. Allocated memory is still 309.3 MB. Free memory was 247.8 MB in the beginning and 245.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:22,625 INFO ]: RCFGBuilder took 501.26 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 220.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:22,625 INFO ]: TraceAbstraction took 22355.87 ms. Allocated memory was 309.3 MB in the beginning and 707.8 MB in the end (delta: 398.5 MB). Free memory was 220.8 MB in the beginning and 561.8 MB in the end (delta: -341.0 MB). Peak memory consumption was 57.4 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:22,629 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 106.82 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 247.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 71.15 ms. Allocated memory is still 309.3 MB. Free memory was 247.8 MB in the beginning and 245.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 501.26 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 220.8 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 22355.87 ms. Allocated memory was 309.3 MB in the beginning and 707.8 MB in the end (delta: 398.5 MB). Free memory was 220.8 MB in the beginning and 561.8 MB in the end (delta: -341.0 MB). Peak memory consumption was 57.4 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 22.2s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 7.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 71 SDslu, 208 SDs, 0 SdLazy, 181 SolverSat, 93 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 37832 SizeOfPredicates, 145 NumberOfNonLiveVariables, 3136 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 42/140 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/metros_1_e2_1102_e3_961.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-04-22-638.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e3_961.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-04-22-638.csv Received shutdown request...