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_4_e2_968_e2_1166.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:21:48,060 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:21:48,061 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:21:48,074 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:21:48,074 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:21:48,075 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:21:48,076 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:21:48,078 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:21:48,079 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:21:48,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:21:48,082 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:21:48,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:21:48,083 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:21:48,086 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:21:48,087 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:21:48,087 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:21:48,089 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:21:48,091 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:21:48,093 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:21:48,094 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:21:48,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:21:48,097 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:21:48,097 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:21:48,098 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:21:48,098 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:21:48,099 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:21:48,100 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:21:48,101 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:21:48,102 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:21:48,102 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:21:48,103 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:21:48,103 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:21:48,104 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:21:48,104 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:21:48,105 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:21:48,105 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 19:21:48,118 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:21:48,119 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:21:48,119 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:21:48,119 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:21:48,120 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:21:48,120 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:21:48,121 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:21:48,121 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:21:48,121 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:21:48,121 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:21:48,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:21:48,122 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:21:48,122 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:21:48,122 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:21:48,122 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:21:48,122 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:21:48,123 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:21:48,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:21:48,123 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:21:48,124 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:21:48,124 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:21:48,160 INFO ]: Repository-Root is: /tmp [2018-06-22 19:21:48,175 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:21:48,179 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:21:48,180 INFO ]: Initializing SmtParser... [2018-06-22 19:21:48,181 INFO ]: SmtParser initialized [2018-06-22 19:21:48,182 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_968_e2_1166.smt2 [2018-06-22 19:21:48,183 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 19:21:48,274 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_968_e2_1166.smt2 unknown [2018-06-22 19:21:48,762 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e2_968_e2_1166.smt2 [2018-06-22 19:21:48,766 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:21:48,772 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:21:48,773 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:21:48,773 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:21:48,773 INFO ]: ChcToBoogie initialized [2018-06-22 19:21:48,785 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:21:48" (1/1) ... [2018-06-22 19:21:48,867 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48 Unit [2018-06-22 19:21:48,867 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:21:48,868 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:21:48,868 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:21:48,868 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:21:48,888 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48" (1/1) ... [2018-06-22 19:21:48,888 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48" (1/1) ... [2018-06-22 19:21:48,896 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48" (1/1) ... [2018-06-22 19:21:48,896 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48" (1/1) ... [2018-06-22 19:21:48,902 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48" (1/1) ... [2018-06-22 19:21:48,903 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48" (1/1) ... [2018-06-22 19:21:48,906 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48" (1/1) ... [2018-06-22 19:21:48,909 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:21:48,910 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:21:48,910 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:21:48,910 INFO ]: RCFGBuilder initialized [2018-06-22 19:21:48,911 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:21:48,925 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:21:48,925 INFO ]: Found specification of procedure False [2018-06-22 19:21:48,925 INFO ]: Found implementation of procedure False [2018-06-22 19:21:48,925 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:21:48,925 INFO ]: Found specification of procedure state [2018-06-22 19:21:48,925 INFO ]: Found implementation of procedure state [2018-06-22 19:21:48,925 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:21:48,925 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:21:48,925 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:21:49,251 INFO ]: Using library mode [2018-06-22 19:21:49,251 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:21:49 BoogieIcfgContainer [2018-06-22 19:21:49,252 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:21:49,253 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:21:49,253 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:21:49,257 INFO ]: TraceAbstraction initialized [2018-06-22 19:21:49,258 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:21:48" (1/3) ... [2018-06-22 19:21:49,259 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afd401c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:21:49, skipping insertion in model container [2018-06-22 19:21:49,259 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:21:48" (2/3) ... [2018-06-22 19:21:49,259 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afd401c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:21:49, skipping insertion in model container [2018-06-22 19:21:49,259 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:21:49" (3/3) ... [2018-06-22 19:21:49,261 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:21:49,270 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:21:49,281 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:21:49,320 INFO ]: Using default assertion order modulation [2018-06-22 19:21:49,320 INFO ]: Interprodecural is true [2018-06-22 19:21:49,320 INFO ]: Hoare is false [2018-06-22 19:21:49,320 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:21:49,320 INFO ]: Backedges is TWOTRACK [2018-06-22 19:21:49,320 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:21:49,320 INFO ]: Difference is false [2018-06-22 19:21:49,320 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:21:49,320 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:21:49,332 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:21:49,342 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:21:49,342 INFO ]: Found error trace [2018-06-22 19:21:49,343 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:21:49,343 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:21:49,348 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:21:49,350 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:21:49,351 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:21:49,390 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:49,390 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:21:49,390 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:49,494 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:21:49,711 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:21:49,713 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:21:49,713 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:21:49,714 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:21:49,725 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:21:49,725 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:21:49,727 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:21:49,826 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:21:49,826 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:21:49,827 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:21:49,828 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:21:49,828 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:21:49,838 INFO ]: With dead ends: 13 [2018-06-22 19:21:49,838 INFO ]: Without dead ends: 13 [2018-06-22 19:21:49,840 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 [2018-06-22 19:21:49,852 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:21:49,885 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:21:49,885 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:21:49,886 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:21:49,887 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:21:49,887 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:21:49,887 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:21:49,887 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:21:49,887 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:21:49,888 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:21:49,888 INFO ]: Found error trace [2018-06-22 19:21:49,888 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:21:49,888 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:21:49,888 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:21:49,888 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:21:49,888 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:21:49,889 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:49,889 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:21:49,889 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:49,969 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:21:50,594 WARN ]: Spent 458.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-06-22 19:21:50,704 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:21:50,705 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:21:50,705 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 19:21:50,713 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:21:50,822 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:21:50,832 INFO ]: Computing forward predicates... [2018-06-22 19:21:51,075 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:21:51,096 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:21:51,096 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:21:51,097 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:21:51,097 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:21:51,097 INFO ]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:21:51,097 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:21:51,497 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:21:51,497 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:21:51,498 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:21:51,498 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:21:51,498 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:21:51,499 INFO ]: With dead ends: 15 [2018-06-22 19:21:51,499 INFO ]: Without dead ends: 15 [2018-06-22 19:21:51,500 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:21:51,500 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:21:51,503 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:21:51,503 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:21:51,503 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:21:51,503 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:21:51,503 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:21:51,503 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:21:51,503 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:21:51,504 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:21:51,504 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:21:51,504 INFO ]: Found error trace [2018-06-22 19:21:51,504 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:21:51,504 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:21:51,504 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:21:51,504 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:21:51,504 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:21:51,505 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:51,505 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:21:51,505 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:51,621 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:21:52,126 WARN ]: Spent 278.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-06-22 19:21:52,163 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:21:52,164 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:21:52,164 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 19:21:52,175 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:21:52,305 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:21:52,305 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:21:52,311 INFO ]: Computing forward predicates... [2018-06-22 19:21:52,660 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 19:21:52,820 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:21:52,839 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:21:52,839 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:21:52,840 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:21:52,840 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:21:52,840 INFO ]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:21:52,840 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:21:53,111 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:21:53,111 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:21:53,112 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:21:53,112 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:21:53,112 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:21:53,112 INFO ]: With dead ends: 17 [2018-06-22 19:21:53,112 INFO ]: Without dead ends: 17 [2018-06-22 19:21:53,113 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:21:53,113 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:21:53,116 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:21:53,116 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:21:53,116 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:21:53,116 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:21:53,116 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:21:53,116 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:21:53,117 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:21:53,117 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:21:53,117 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:21:53,117 INFO ]: Found error trace [2018-06-22 19:21:53,117 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:21:53,117 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:21:53,117 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:21:53,117 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:21:53,117 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:21:53,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:53,118 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:21:53,118 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:53,195 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:21:53,612 WARN ]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 19:21:53,870 WARN ]: Spent 184.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-06-22 19:21:53,992 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:21:53,993 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:21:53,993 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 19:21:54,002 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:21:54,166 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:21:54,166 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:21:54,173 INFO ]: Computing forward predicates... [2018-06-22 19:21:54,447 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:21:54,481 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:21:54,481 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 19:21:54,481 INFO ]: Interpolant automaton has 16 states [2018-06-22 19:21:54,481 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 19:21:54,481 INFO ]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:21:54,482 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 19:21:54,666 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-06-22 19:21:55,171 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:21:55,171 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 19:21:55,172 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:21:55,172 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 19:21:55,172 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:21:55,173 INFO ]: With dead ends: 21 [2018-06-22 19:21:55,173 INFO ]: Without dead ends: 21 [2018-06-22 19:21:55,173 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:21:55,173 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 19:21:55,177 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 19:21:55,177 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 19:21:55,177 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 19:21:55,177 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-22 19:21:55,178 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:21:55,178 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 19:21:55,178 INFO ]: Interpolant automaton has 16 states. [2018-06-22 19:21:55,178 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 19:21:55,178 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 19:21:55,178 INFO ]: Found error trace [2018-06-22 19:21:55,179 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:21:55,179 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:21:55,179 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 4 times [2018-06-22 19:21:55,179 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:21:55,179 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:21:55,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:55,180 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:21:55,180 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:21:55,397 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:21:56,299 WARN ]: Spent 321.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2018-06-22 19:21:56,527 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2018-06-22 19:21:56,804 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2018-06-22 19:21:57,085 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 18 [2018-06-22 19:21:57,306 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 19 [2018-06-22 19:21:57,566 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 27 [2018-06-22 19:21:57,586 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 19:21:57,587 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:21:57,587 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:21:57,601 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:21:57,824 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:21:57,824 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:21:57,832 INFO ]: Computing forward predicates... [2018-06-22 19:21:58,289 INFO ]: Checked inductivity of 55 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-06-22 19:21:58,310 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:21:58,310 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2018-06-22 19:21:58,310 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:21:58,310 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:21:58,310 INFO ]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:21:58,311 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 20 states. [2018-06-22 19:21:58,682 WARN ]: Spent 323.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 110 [2018-06-22 19:21:59,105 WARN ]: Spent 317.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 119 [2018-06-22 19:21:59,530 WARN ]: Spent 387.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 122 [2018-06-22 19:22:00,008 WARN ]: Spent 379.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 116 [2018-06-22 19:22:00,406 WARN ]: Spent 355.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 108 [2018-06-22 19:22:00,986 WARN ]: Spent 536.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 105 [2018-06-22 19:22:01,008 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:22:01,008 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:22:01,008 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 19:22:01,008 INFO ]: Start accepts. Automaton has 20 states. Word has length 29 [2018-06-22 19:22:01,008 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:22:01,008 INFO ]: With dead ends: 17 [2018-06-22 19:22:01,008 INFO ]: Without dead ends: 0 [2018-06-22 19:22:01,009 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2018-06-22 19:22:01,009 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:22:01,009 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:22:01,009 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:22:01,009 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:22:01,009 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 19:22:01,009 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:22:01,009 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:22:01,009 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:22:01,009 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:22:01,009 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:22:01,013 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:22:01 BoogieIcfgContainer [2018-06-22 19:22:01,013 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:22:01,014 INFO ]: Toolchain (without parser) took 12246.84 ms. Allocated memory was 307.8 MB in the beginning and 500.2 MB in the end (delta: 192.4 MB). Free memory was 249.2 MB in the beginning and 296.3 MB in the end (delta: -47.1 MB). Peak memory consumption was 145.3 MB. Max. memory is 3.6 GB. [2018-06-22 19:22:01,014 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:22:01,015 INFO ]: ChcToBoogie took 94.83 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 247.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:22:01,015 INFO ]: Boogie Preprocessor took 41.48 ms. Allocated memory is still 307.8 MB. Free memory was 247.2 MB in the beginning and 245.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:22:01,015 INFO ]: RCFGBuilder took 341.80 ms. Allocated memory is still 307.8 MB. Free memory was 245.1 MB in the beginning and 221.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:22:01,016 INFO ]: TraceAbstraction took 11759.88 ms. Allocated memory was 307.8 MB in the beginning and 500.2 MB in the end (delta: 192.4 MB). Free memory was 221.1 MB in the beginning and 296.3 MB in the end (delta: -75.2 MB). Peak memory consumption was 117.2 MB. Max. memory is 3.6 GB. [2018-06-22 19:22:01,018 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 94.83 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 247.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.48 ms. Allocated memory is still 307.8 MB. Free memory was 247.2 MB in the beginning and 245.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 341.80 ms. Allocated memory is still 307.8 MB. Free memory was 245.1 MB in the beginning and 221.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 11759.88 ms. Allocated memory was 307.8 MB in the beginning and 500.2 MB in the end (delta: 192.4 MB). Free memory was 221.1 MB in the beginning and 296.3 MB in the end (delta: -75.2 MB). Peak memory consumption was 117.2 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, 11.7s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 4.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 82 SDslu, 227 SDs, 0 SdLazy, 192 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 26760 SizeOfPredicates, 104 NumberOfNonLiveVariables, 3309 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 65/178 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_4_e2_968_e2_1166.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-22-01-028.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e2_968_e2_1166.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-22-01-028.csv Received shutdown request...