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_e7_1163.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:04:11,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:04:11,362 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:04:11,381 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:04:11,381 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:04:11,382 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:04:11,385 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:04:11,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:04:11,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:04:11,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:04:11,392 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:04:11,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:04:11,393 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:04:11,394 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:04:11,398 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:04:11,400 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:04:11,401 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:04:11,416 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:04:11,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:04:11,419 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:04:11,420 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:04:11,422 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:04:11,422 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:04:11,422 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:04:11,423 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:04:11,424 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:04:11,429 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:04:11,430 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:04:11,431 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:04:11,431 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:04:11,432 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:04:11,432 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:04:11,432 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:04:11,436 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:04:11,437 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:04:11,437 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 19:04:11,458 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:04:11,458 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:04:11,459 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:04:11,459 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:04:11,460 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:04:11,460 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:04:11,460 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:04:11,461 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:04:11,461 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:04:11,461 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:04:11,461 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:04:11,461 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:04:11,462 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:04:11,464 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:04:11,465 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:04:11,465 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:04:11,465 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:04:11,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:04:11,465 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:04:11,467 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:04:11,467 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:04:11,523 INFO ]: Repository-Root is: /tmp [2018-06-22 19:04:11,541 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:04:11,545 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:04:11,546 INFO ]: Initializing SmtParser... [2018-06-22 19:04:11,547 INFO ]: SmtParser initialized [2018-06-22 19:04:11,548 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 [2018-06-22 19:04:11,549 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 19:04:11,636 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 unknown [2018-06-22 19:04:12,260 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 [2018-06-22 19:04:12,265 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:04:12,277 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:04:12,278 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:04:12,278 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:04:12,278 INFO ]: ChcToBoogie initialized [2018-06-22 19:04:12,285 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:04:12" (1/1) ... [2018-06-22 19:04:12,383 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12 Unit [2018-06-22 19:04:12,392 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:04:12,393 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:04:12,393 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:04:12,393 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:04:12,438 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12" (1/1) ... [2018-06-22 19:04:12,438 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12" (1/1) ... [2018-06-22 19:04:12,448 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12" (1/1) ... [2018-06-22 19:04:12,448 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12" (1/1) ... [2018-06-22 19:04:12,454 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12" (1/1) ... [2018-06-22 19:04:12,455 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12" (1/1) ... [2018-06-22 19:04:12,457 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12" (1/1) ... [2018-06-22 19:04:12,460 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:04:12,461 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:04:12,461 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:04:12,461 INFO ]: RCFGBuilder initialized [2018-06-22 19:04:12,462 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12" (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 19:04:12,490 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:04:12,490 INFO ]: Found specification of procedure False [2018-06-22 19:04:12,490 INFO ]: Found implementation of procedure False [2018-06-22 19:04:12,490 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:04:12,490 INFO ]: Found specification of procedure state [2018-06-22 19:04:12,491 INFO ]: Found implementation of procedure state [2018-06-22 19:04:12,491 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:04:12,491 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:04:12,491 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 19:04:12,914 INFO ]: Using library mode [2018-06-22 19:04:12,914 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:04:12 BoogieIcfgContainer [2018-06-22 19:04:12,914 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:04:12,916 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:04:12,916 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:04:12,919 INFO ]: TraceAbstraction initialized [2018-06-22 19:04:12,920 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:04:12" (1/3) ... [2018-06-22 19:04:12,921 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 07:04:12, skipping insertion in model container [2018-06-22 19:04:12,921 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:04:12" (2/3) ... [2018-06-22 19:04:12,921 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 07:04:12, skipping insertion in model container [2018-06-22 19:04:12,921 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:04:12" (3/3) ... [2018-06-22 19:04:12,924 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:04:12,934 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:04:12,948 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:04:12,998 INFO ]: Using default assertion order modulation [2018-06-22 19:04:12,999 INFO ]: Interprodecural is true [2018-06-22 19:04:12,999 INFO ]: Hoare is false [2018-06-22 19:04:12,999 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:04:12,999 INFO ]: Backedges is TWOTRACK [2018-06-22 19:04:12,999 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:04:12,999 INFO ]: Difference is false [2018-06-22 19:04:12,999 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:04:12,999 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:04:13,015 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:04:13,029 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:04:13,029 INFO ]: Found error trace [2018-06-22 19:04:13,031 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:13,031 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:13,035 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:04:13,037 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:13,037 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:13,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:13,074 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:13,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:13,179 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:13,406 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:04:13,414 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:04:13,414 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:04:13,416 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:04:13,432 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:04:13,433 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:04:13,435 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:04:13,602 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:13,602 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:04:13,603 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:04:13,605 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:04:13,605 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:13,621 INFO ]: With dead ends: 13 [2018-06-22 19:04:13,621 INFO ]: Without dead ends: 13 [2018-06-22 19:04:13,625 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 19:04:13,639 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:04:13,662 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:04:13,663 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:04:13,664 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:04:13,665 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:04:13,665 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:13,665 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:04:13,665 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:04:13,665 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:04:13,666 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:04:13,666 INFO ]: Found error trace [2018-06-22 19:04:13,666 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:13,666 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:13,667 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:04:13,667 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:13,667 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:13,667 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:13,667 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:13,667 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:13,730 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:13,995 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:04:13,995 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:14,009 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 19:04:14,017 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:14,152 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:14,162 INFO ]: Computing forward predicates... [2018-06-22 19:04:14,619 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 4 [2018-06-22 19:04:14,678 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:04:14,701 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:14,701 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:04:14,701 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:04:14,702 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:04:14,702 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:04:14,702 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:04:15,127 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:15,127 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:04:15,128 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:04:15,128 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:04:15,128 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:15,128 INFO ]: With dead ends: 15 [2018-06-22 19:04:15,128 INFO ]: Without dead ends: 15 [2018-06-22 19:04:15,129 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 19:04:15,130 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:04:15,132 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:04:15,132 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:04:15,133 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:04:15,133 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:04:15,133 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:15,133 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:04:15,133 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:04:15,133 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:04:15,134 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:04:15,134 INFO ]: Found error trace [2018-06-22 19:04:15,134 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:15,134 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:15,134 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:04:15,134 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:15,134 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:15,135 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:15,135 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:04:15,135 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:15,201 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:15,539 WARN ]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 19:04:15,751 WARN ]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 19:04:15,795 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:04:15,795 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:15,795 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 19:04:15,804 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:04:15,977 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:04:15,977 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:15,984 INFO ]: Computing forward predicates... [2018-06-22 19:04:16,460 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:04:16,484 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:16,484 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:04:16,484 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:04:16,484 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:04:16,484 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:04:16,485 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:04:16,752 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:16,753 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:04:16,754 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:04:16,754 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:04:16,754 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:16,754 INFO ]: With dead ends: 17 [2018-06-22 19:04:16,754 INFO ]: Without dead ends: 17 [2018-06-22 19:04:16,755 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:04:16,755 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:04:16,758 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:04:16,758 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:04:16,759 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:04:16,759 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:04:16,759 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:16,759 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:04:16,759 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:04:16,759 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:04:16,759 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:04:16,759 INFO ]: Found error trace [2018-06-22 19:04:16,759 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:16,759 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:16,759 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:04:16,760 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:16,760 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:16,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:16,760 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:04:16,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:16,912 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:17,499 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2018-06-22 19:04:17,641 WARN ]: Spent 131.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2018-06-22 19:04:17,823 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-06-22 19:04:17,853 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:04:17,853 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:17,853 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 19:04:17,871 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:04:18,022 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:04:18,023 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:18,030 INFO ]: Computing forward predicates... [2018-06-22 19:04:18,182 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 19:04:18,910 WARN ]: Spent 216.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 30 [2018-06-22 19:04:19,125 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:04:19,147 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:19,147 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:04:19,147 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:04:19,147 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:04:19,147 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:04:19,147 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:04:19,585 WARN ]: Spent 342.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2018-06-22 19:04:19,810 WARN ]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-06-22 19:04:20,029 WARN ]: Spent 193.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2018-06-22 19:04:20,515 WARN ]: Spent 442.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2018-06-22 19:04:20,562 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:20,562 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:04:20,563 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:04:20,563 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:04:20,563 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:20,564 INFO ]: With dead ends: 19 [2018-06-22 19:04:20,564 INFO ]: Without dead ends: 19 [2018-06-22 19:04:20,564 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:04:20,564 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:04:20,567 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:04:20,567 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:04:20,568 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:04:20,568 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:04:20,568 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:20,568 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:04:20,568 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:04:20,568 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:04:20,570 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:04:20,570 INFO ]: Found error trace [2018-06-22 19:04:20,570 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:04:20,571 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:04:20,571 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:04:20,571 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:04:20,571 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:04:20,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:20,571 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:04:20,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:04:20,707 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:21,104 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-06-22 19:04:21,330 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:04:21,330 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:04:21,331 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 19:04:21,336 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:04:21,494 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:04:21,494 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:04:21,503 INFO ]: Computing forward predicates... [2018-06-22 19:04:22,904 WARN ]: Spent 1.06 s on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-06-22 19:04:24,230 WARN ]: Spent 1.21 s on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2018-06-22 19:04:27,189 WARN ]: Spent 1.79 s on a formula simplification. DAG size of input: 253 DAG size of output: 52 [2018-06-22 19:04:27,254 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:04:27,280 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:04:27,280 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 19:04:27,280 INFO ]: Interpolant automaton has 21 states [2018-06-22 19:04:27,280 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 19:04:27,280 INFO ]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2018-06-22 19:04:27,280 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 19:04:28,983 WARN ]: Spent 1.61 s on a formula simplification. DAG size of input: 203 DAG size of output: 154 [2018-06-22 19:04:29,130 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 21 [2018-06-22 19:04:30,875 WARN ]: Spent 1.61 s on a formula simplification. DAG size of input: 263 DAG size of output: 153 [2018-06-22 19:04:32,688 WARN ]: Spent 1.76 s on a formula simplification. DAG size of input: 250 DAG size of output: 180 [2018-06-22 19:04:33,654 WARN ]: Spent 904.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 158 [2018-06-22 19:04:34,738 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 213 DAG size of output: 163 [2018-06-22 19:04:34,777 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:04:34,777 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:04:34,777 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:04:34,778 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 19:04:34,778 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:04:34,778 INFO ]: With dead ends: 15 [2018-06-22 19:04:34,778 INFO ]: Without dead ends: 0 [2018-06-22 19:04:34,778 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2018-06-22 19:04:34,778 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:04:34,778 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:04:34,778 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:04:34,778 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:04:34,778 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 19:04:34,778 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:04:34,778 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:04:34,778 INFO ]: Interpolant automaton has 21 states. [2018-06-22 19:04:34,779 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:04:34,779 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:04:34,783 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:04:34 BoogieIcfgContainer [2018-06-22 19:04:34,783 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:04:34,785 INFO ]: Toolchain (without parser) took 22519.98 ms. Allocated memory was 309.3 MB in the beginning and 669.5 MB in the end (delta: 360.2 MB). Free memory was 248.8 MB in the beginning and 447.2 MB in the end (delta: -198.5 MB). Peak memory consumption was 161.7 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:34,786 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 19:04:34,786 INFO ]: ChcToBoogie took 114.64 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 19:04:34,786 INFO ]: Boogie Preprocessor took 67.82 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:34,787 INFO ]: RCFGBuilder took 453.55 ms. Allocated memory is still 309.3 MB. Free memory was 243.8 MB in the beginning and 219.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:34,787 INFO ]: TraceAbstraction took 21867.38 ms. Allocated memory was 309.3 MB in the beginning and 669.5 MB in the end (delta: 360.2 MB). Free memory was 218.7 MB in the beginning and 447.2 MB in the end (delta: -228.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 3.6 GB. [2018-06-22 19:04:34,789 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 114.64 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. * Boogie Preprocessor took 67.82 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 453.55 ms. Allocated memory is still 309.3 MB. Free memory was 243.8 MB in the beginning and 219.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 21867.38 ms. Allocated memory was 309.3 MB in the beginning and 669.5 MB in the end (delta: 360.2 MB). Free memory was 218.7 MB in the beginning and 447.2 MB in the end (delta: -228.6 MB). Peak memory consumption was 131.6 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, 21.7s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 9.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 76 SDslu, 210 SDs, 0 SdLazy, 185 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 16.4s 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: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 84904 SizeOfPredicates, 105 NumberOfNonLiveVariables, 3136 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 40/140 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_e7_1163.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-04-34-798.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e7_1163.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-04-34-798.csv Received shutdown request...