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_3_e4_987_e1_1115.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:17:11,208 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:17:11,210 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:17:11,222 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:17:11,223 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:17:11,224 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:17:11,225 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:17:11,227 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:17:11,228 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:17:11,229 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:17:11,230 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:17:11,231 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:17:11,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:17:11,233 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:17:11,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:17:11,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:17:11,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:17:11,238 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:17:11,240 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:17:11,241 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:17:11,243 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:17:11,245 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:17:11,245 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:17:11,246 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:17:11,247 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:17:11,248 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:17:11,249 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:17:11,249 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:17:11,251 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:17:11,251 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:17:11,252 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:17:11,253 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:17:11,253 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:17:11,254 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:17:11,254 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:17:11,255 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 19:17:11,275 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:17:11,275 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:17:11,276 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:17:11,276 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:17:11,281 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:17:11,282 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:17:11,282 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:17:11,282 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:17:11,282 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:17:11,282 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:17:11,283 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:17:11,283 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:17:11,283 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:17:11,283 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:17:11,283 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:17:11,284 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:17:11,285 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:17:11,285 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:17:11,285 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:17:11,287 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:17:11,287 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:17:11,339 INFO ]: Repository-Root is: /tmp [2018-06-22 19:17:11,356 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:17:11,362 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:17:11,364 INFO ]: Initializing SmtParser... [2018-06-22 19:17:11,364 INFO ]: SmtParser initialized [2018-06-22 19:17:11,364 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e4_987_e1_1115.smt2 [2018-06-22 19:17:11,366 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 19:17:11,464 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e4_987_e1_1115.smt2 unknown [2018-06-22 19:17:11,842 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3_e4_987_e1_1115.smt2 [2018-06-22 19:17:11,846 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:17:11,852 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:17:11,853 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:17:11,853 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:17:11,853 INFO ]: ChcToBoogie initialized [2018-06-22 19:17:11,856 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:17:11" (1/1) ... [2018-06-22 19:17:11,911 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11 Unit [2018-06-22 19:17:11,911 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:17:11,912 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:17:11,912 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:17:11,912 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:17:11,934 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11" (1/1) ... [2018-06-22 19:17:11,934 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11" (1/1) ... [2018-06-22 19:17:11,956 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11" (1/1) ... [2018-06-22 19:17:11,956 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11" (1/1) ... [2018-06-22 19:17:11,962 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11" (1/1) ... [2018-06-22 19:17:11,963 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11" (1/1) ... [2018-06-22 19:17:11,974 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11" (1/1) ... [2018-06-22 19:17:11,979 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:17:11,980 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:17:11,980 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:17:11,980 INFO ]: RCFGBuilder initialized [2018-06-22 19:17:11,981 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11" (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 19:17:12,000 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:17:12,000 INFO ]: Found specification of procedure False [2018-06-22 19:17:12,000 INFO ]: Found implementation of procedure False [2018-06-22 19:17:12,000 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:17:12,000 INFO ]: Found specification of procedure state [2018-06-22 19:17:12,000 INFO ]: Found implementation of procedure state [2018-06-22 19:17:12,000 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:17:12,000 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:17:12,000 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 19:17:12,393 INFO ]: Using library mode [2018-06-22 19:17:12,394 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:17:12 BoogieIcfgContainer [2018-06-22 19:17:12,394 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:17:12,396 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:17:12,396 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:17:12,402 INFO ]: TraceAbstraction initialized [2018-06-22 19:17:12,402 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:17:11" (1/3) ... [2018-06-22 19:17:12,403 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c99dfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:17:12, skipping insertion in model container [2018-06-22 19:17:12,403 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:17:11" (2/3) ... [2018-06-22 19:17:12,404 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c99dfab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:17:12, skipping insertion in model container [2018-06-22 19:17:12,404 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:17:12" (3/3) ... [2018-06-22 19:17:12,406 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:17:12,416 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:17:12,427 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:17:12,479 INFO ]: Using default assertion order modulation [2018-06-22 19:17:12,479 INFO ]: Interprodecural is true [2018-06-22 19:17:12,479 INFO ]: Hoare is false [2018-06-22 19:17:12,479 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:17:12,479 INFO ]: Backedges is TWOTRACK [2018-06-22 19:17:12,479 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:17:12,479 INFO ]: Difference is false [2018-06-22 19:17:12,479 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:17:12,479 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:17:12,499 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:17:12,515 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:17:12,515 INFO ]: Found error trace [2018-06-22 19:17:12,516 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:17:12,516 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:17:12,521 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:17:12,523 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:17:12,524 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:17:12,564 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:12,564 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:17:12,564 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:12,656 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:12,848 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:17:12,851 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:17:12,851 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:17:12,853 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:17:12,865 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:17:12,866 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:17:12,868 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:17:13,024 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:17:13,024 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:17:13,025 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:17:13,027 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:17:13,028 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:17:13,042 INFO ]: With dead ends: 13 [2018-06-22 19:17:13,042 INFO ]: Without dead ends: 13 [2018-06-22 19:17:13,044 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 19:17:13,065 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:17:13,102 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:17:13,104 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:17:13,104 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:17:13,106 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:17:13,106 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:17:13,106 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:17:13,106 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:17:13,106 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:17:13,107 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:17:13,107 INFO ]: Found error trace [2018-06-22 19:17:13,107 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:17:13,108 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:17:13,111 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:17:13,111 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:17:13,111 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:17:13,112 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:13,112 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:17:13,112 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:13,206 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:13,560 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:17:13,560 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:17:13,560 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 19:17:13,568 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:17:13,691 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:13,702 INFO ]: Computing forward predicates... [2018-06-22 19:17:14,027 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:17:14,049 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:17:14,049 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:17:14,050 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:17:14,050 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:17:14,050 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:17:14,050 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:17:14,516 WARN ]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-22 19:17:14,880 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:17:14,880 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:17:14,881 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:17:14,881 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:17:14,881 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:17:14,882 INFO ]: With dead ends: 15 [2018-06-22 19:17:14,882 INFO ]: Without dead ends: 15 [2018-06-22 19:17:14,883 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:17:14,883 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:17:14,885 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:17:14,885 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:17:14,886 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:17:14,886 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:17:14,886 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:17:14,886 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:17:14,886 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:17:14,886 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:17:14,886 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:17:14,886 INFO ]: Found error trace [2018-06-22 19:17:14,886 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:17:14,887 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:17:14,887 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:17:14,887 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:17:14,887 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:17:14,888 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:14,888 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:17:14,888 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:14,983 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:15,293 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:17:15,293 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:17:15,293 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 19:17:15,303 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:17:15,441 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:17:15,441 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:15,447 INFO ]: Computing forward predicates... [2018-06-22 19:17:15,830 WARN ]: Spent 198.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 19:17:16,135 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:17:16,156 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:17:16,156 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:17:16,156 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:17:16,156 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:17:16,157 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:17:16,157 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:17:16,456 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:17:16,457 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:17:16,458 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:17:16,458 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:17:16,458 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:17:16,459 INFO ]: With dead ends: 17 [2018-06-22 19:17:16,459 INFO ]: Without dead ends: 17 [2018-06-22 19:17:16,459 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:17:16,459 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:17:16,462 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:17:16,462 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:17:16,463 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:17:16,463 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:17:16,463 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:17:16,463 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:17:16,463 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:17:16,463 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:17:16,464 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:17:16,464 INFO ]: Found error trace [2018-06-22 19:17:16,464 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:17:16,464 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:17:16,464 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:17:16,464 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:17:16,464 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:17:16,465 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:16,465 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:17:16,465 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:16,602 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:16,985 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2018-06-22 19:17:17,172 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:17:17,172 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:17:17,172 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 19:17:17,180 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:17:17,339 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:17:17,339 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:17,347 INFO ]: Computing forward predicates... [2018-06-22 19:17:17,818 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:17:17,852 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:17:17,868 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:17:17,868 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:17:17,868 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:17:17,868 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:17:17,868 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:17:18,335 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:17:18,335 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:17:18,336 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:17:18,336 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:17:18,336 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:17:18,336 INFO ]: With dead ends: 19 [2018-06-22 19:17:18,337 INFO ]: Without dead ends: 19 [2018-06-22 19:17:18,337 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:17:18,337 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:17:18,340 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:17:18,340 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:17:18,341 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:17:18,341 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:17:18,341 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:17:18,341 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:17:18,341 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:17:18,341 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:17:18,342 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:17:18,342 INFO ]: Found error trace [2018-06-22 19:17:18,342 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:17:18,342 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:17:18,342 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:17:18,342 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:17:18,342 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:17:18,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:18,343 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:17:18,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:18,581 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:19,136 WARN ]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:17:19,745 WARN ]: Spent 526.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2018-06-22 19:17:20,327 WARN ]: Spent 372.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2018-06-22 19:17:20,520 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 37 [2018-06-22 19:17:20,840 WARN ]: Spent 293.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 19 [2018-06-22 19:17:20,906 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:17:20,906 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:17:20,906 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 19:17:20,923 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:17:21,090 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:17:21,090 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:21,097 INFO ]: Computing forward predicates... [2018-06-22 19:17:21,517 INFO ]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 19:17:21,544 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:17:21,544 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-06-22 19:17:21,544 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:17:21,544 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:17:21,544 INFO ]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:17:21,544 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 19:17:21,747 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2018-06-22 19:17:22,084 WARN ]: Spent 259.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 112 [2018-06-22 19:17:22,300 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2018-06-22 19:17:22,509 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2018-06-22 19:17:22,738 WARN ]: Spent 158.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2018-06-22 19:17:22,924 WARN ]: Spent 149.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2018-06-22 19:17:22,971 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:17:23,029 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 19:17:23,030 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 19:17:23,030 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 19:17:23,030 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:17:23,031 INFO ]: With dead ends: 23 [2018-06-22 19:17:23,031 INFO ]: Without dead ends: 23 [2018-06-22 19:17:23,031 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2018-06-22 19:17:23,031 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 19:17:23,035 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 19:17:23,035 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 19:17:23,036 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 19:17:23,036 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 25 [2018-06-22 19:17:23,036 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:17:23,036 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 19:17:23,036 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:17:23,036 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 19:17:23,037 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 19:17:23,037 INFO ]: Found error trace [2018-06-22 19:17:23,037 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:17:23,037 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:17:23,037 INFO ]: Analyzing trace with hash 800064122, now seen corresponding path program 5 times [2018-06-22 19:17:23,037 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:17:23,037 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:17:23,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:23,038 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:17:23,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:17:23,440 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:17:25,844 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:17:31,698 WARN ]: Spent 5.56 s on a formula simplification. DAG size of input: 606 DAG size of output: 24 [2018-06-22 19:17:33,254 WARN ]: Spent 1.38 s on a formula simplification. DAG size of input: 313 DAG size of output: 20 [2018-06-22 19:17:38,021 WARN ]: Spent 4.39 s on a formula simplification. DAG size of input: 539 DAG size of output: 25 [2018-06-22 19:17:51,205 WARN ]: Spent 12.74 s on a formula simplification. DAG size of input: 409 DAG size of output: 25 [2018-06-22 19:17:52,961 WARN ]: Spent 1.49 s on a formula simplification. DAG size of input: 661 DAG size of output: 16 [2018-06-22 19:17:54,216 WARN ]: Spent 968.00 ms on a formula simplification. DAG size of input: 659 DAG size of output: 15 [2018-06-22 19:17:58,783 WARN ]: Spent 4.16 s on a formula simplification. DAG size of input: 974 DAG size of output: 24 [2018-06-22 19:18:03,600 WARN ]: Spent 4.40 s on a formula simplification. DAG size of input: 925 DAG size of output: 16 [2018-06-22 19:18:09,363 WARN ]: Spent 5.33 s on a formula simplification. DAG size of input: 851 DAG size of output: 10 [2018-06-22 19:18:18,470 WARN ]: Spent 8.42 s on a formula simplification. DAG size of input: 745 DAG size of output: 21 [2018-06-22 19:18:18,489 INFO ]: Checked inductivity of 78 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 19:18:18,489 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:18:18,489 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:18:18,497 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 19:18:18,757 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 19:18:18,757 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:18:18,767 INFO ]: Computing forward predicates... [2018-06-22 19:18:19,206 INFO ]: Checked inductivity of 78 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 19:18:19,227 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:18:19,227 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2018-06-22 19:18:19,227 INFO ]: Interpolant automaton has 28 states [2018-06-22 19:18:19,227 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-22 19:18:19,228 INFO ]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2018-06-22 19:18:19,228 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 28 states. [2018-06-22 19:18:19,530 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2018-06-22 19:18:19,948 WARN ]: Spent 192.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 92 [2018-06-22 19:18:20,182 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 93 [2018-06-22 19:18:20,430 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2018-06-22 19:18:20,668 WARN ]: Spent 194.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2018-06-22 19:18:20,891 WARN ]: Spent 178.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2018-06-22 19:18:21,145 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 Received shutdown request... [2018-06-22 19:18:21,201 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 19:18:21,201 WARN ]: Verification canceled [2018-06-22 19:18:21,207 WARN ]: Timeout [2018-06-22 19:18:21,207 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:18:21 BoogieIcfgContainer [2018-06-22 19:18:21,207 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:18:21,208 INFO ]: Toolchain (without parser) took 69361.28 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 250.2 MB in the beginning and 1.1 GB in the end (delta: -814.9 MB). Peak memory consumption was 373.7 MB. Max. memory is 3.6 GB. [2018-06-22 19:18:21,209 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:18:21,209 INFO ]: ChcToBoogie took 58.42 ms. Allocated memory is still 308.8 MB. Free memory was 250.2 MB in the beginning and 248.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:18:21,209 INFO ]: Boogie Preprocessor took 67.71 ms. Allocated memory is still 308.8 MB. Free memory was 248.2 MB in the beginning and 246.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:18:21,210 INFO ]: RCFGBuilder took 414.04 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 222.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:18:21,210 INFO ]: TraceAbstraction took 68811.69 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 222.2 MB in the beginning and 1.1 GB in the end (delta: -842.9 MB). Peak memory consumption was 345.7 MB. Max. memory is 3.6 GB. [2018-06-22 19:18:21,220 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 58.42 ms. Allocated memory is still 308.8 MB. Free memory was 250.2 MB in the beginning and 248.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 67.71 ms. Allocated memory is still 308.8 MB. Free memory was 248.2 MB in the beginning and 246.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 414.04 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 222.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 68811.69 ms. Allocated memory was 308.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 222.2 MB in the beginning and 1.1 GB in the end (delta: -842.9 MB). Peak memory consumption was 345.7 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (23states) and interpolant automaton (currently 11 states, 28 states before enhancement), while ReachableStatesComputation was computing reachable states (21 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 68.7s OverallTime, 6 OverallIterations, 7 TraceHistogramMax, 5.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 157 SDslu, 366 SDs, 0 SdLazy, 342 SolverSat, 192 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 59.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=5, 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, 1.6s SatisfiabilityAnalysisTime, 61.1s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 43372 SizeOfPredicates, 153 NumberOfNonLiveVariables, 4674 ConjunctsInSsa, 202 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 85/296 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e4_987_e1_1115.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-18-21-229.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3_e4_987_e1_1115.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-18-21-229.csv Completed graceful shutdown