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_e7_606.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:05:40,234 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:05:40,239 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:05:40,253 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:05:40,253 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:05:40,254 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:05:40,255 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:05:40,260 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:05:40,261 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:05:40,263 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:05:40,264 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:05:40,264 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:05:40,265 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:05:40,266 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:05:40,270 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:05:40,271 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:05:40,273 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:05:40,286 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:05:40,288 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:05:40,289 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:05:40,290 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:05:40,292 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:05:40,292 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:05:40,292 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:05:40,293 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:05:40,294 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:05:40,295 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:05:40,300 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:05:40,301 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:05:40,301 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:05:40,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:05:40,302 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:05:40,302 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:05:40,307 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:05:40,308 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:05:40,308 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 19:05:40,333 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:05:40,333 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:05:40,333 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:05:40,334 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:05:40,335 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:05:40,335 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:05:40,335 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:05:40,339 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:05:40,339 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:05:40,339 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:05:40,340 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:05:40,340 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:05:40,340 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:05:40,340 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:05:40,340 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:05:40,341 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:05:40,341 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:05:40,341 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:05:40,341 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:05:40,343 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:05:40,343 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:05:40,386 INFO ]: Repository-Root is: /tmp [2018-06-22 19:05:40,402 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:05:40,410 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:05:40,412 INFO ]: Initializing SmtParser... [2018-06-22 19:05:40,412 INFO ]: SmtParser initialized [2018-06-22 19:05:40,413 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_606.smt2 [2018-06-22 19:05:40,414 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 19:05:40,510 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_606.smt2 unknown [2018-06-22 19:05:41,015 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_606.smt2 [2018-06-22 19:05:41,021 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:05:41,037 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:05:41,038 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:05:41,038 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:05:41,038 INFO ]: ChcToBoogie initialized [2018-06-22 19:05:41,041 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:05:41" (1/1) ... [2018-06-22 19:05:41,134 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41 Unit [2018-06-22 19:05:41,134 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:05:41,135 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:05:41,135 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:05:41,135 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:05:41,180 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41" (1/1) ... [2018-06-22 19:05:41,180 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41" (1/1) ... [2018-06-22 19:05:41,195 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41" (1/1) ... [2018-06-22 19:05:41,195 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41" (1/1) ... [2018-06-22 19:05:41,213 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41" (1/1) ... [2018-06-22 19:05:41,215 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41" (1/1) ... [2018-06-22 19:05:41,226 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41" (1/1) ... [2018-06-22 19:05:41,233 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:05:41,234 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:05:41,234 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:05:41,234 INFO ]: RCFGBuilder initialized [2018-06-22 19:05:41,235 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41" (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 19:05:41,252 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:05:41,252 INFO ]: Found specification of procedure False [2018-06-22 19:05:41,252 INFO ]: Found implementation of procedure False [2018-06-22 19:05:41,252 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:05:41,252 INFO ]: Found specification of procedure state [2018-06-22 19:05:41,252 INFO ]: Found implementation of procedure state [2018-06-22 19:05:41,252 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:05:41,252 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:05:41,252 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:05:41,624 INFO ]: Using library mode [2018-06-22 19:05:41,625 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:05:41 BoogieIcfgContainer [2018-06-22 19:05:41,625 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:05:41,627 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:05:41,627 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:05:41,631 INFO ]: TraceAbstraction initialized [2018-06-22 19:05:41,631 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:05:41" (1/3) ... [2018-06-22 19:05:41,632 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691c109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:05:41, skipping insertion in model container [2018-06-22 19:05:41,632 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:05:41" (2/3) ... [2018-06-22 19:05:41,632 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691c109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:05:41, skipping insertion in model container [2018-06-22 19:05:41,632 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:05:41" (3/3) ... [2018-06-22 19:05:41,637 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:05:41,649 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:05:41,663 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:05:41,716 INFO ]: Using default assertion order modulation [2018-06-22 19:05:41,717 INFO ]: Interprodecural is true [2018-06-22 19:05:41,717 INFO ]: Hoare is false [2018-06-22 19:05:41,717 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:05:41,717 INFO ]: Backedges is TWOTRACK [2018-06-22 19:05:41,717 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:05:41,717 INFO ]: Difference is false [2018-06-22 19:05:41,717 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:05:41,717 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:05:41,743 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:05:41,777 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:05:41,779 INFO ]: Found error trace [2018-06-22 19:05:41,781 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:05:41,781 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:05:41,794 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:05:41,796 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:05:41,797 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:05:41,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:41,854 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:05:41,854 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:42,057 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:05:42,235 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:05:42,239 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:05:42,239 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:05:42,241 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:05:42,257 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:05:42,258 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:05:42,260 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:05:42,385 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:05:42,385 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:05:42,387 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:05:42,388 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:05:42,389 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:05:42,404 INFO ]: With dead ends: 13 [2018-06-22 19:05:42,404 INFO ]: Without dead ends: 13 [2018-06-22 19:05:42,408 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 19:05:42,427 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:05:42,447 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:05:42,448 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:05:42,449 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:05:42,449 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:05:42,450 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:05:42,450 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:05:42,450 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:05:42,450 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:05:42,451 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:05:42,451 INFO ]: Found error trace [2018-06-22 19:05:42,451 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:05:42,451 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:05:42,451 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:05:42,451 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:05:42,451 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:05:42,452 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:42,452 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:05:42,452 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:42,534 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:05:42,904 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:05:42,905 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:05:42,905 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 19:05:42,915 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:05:43,038 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:05:43,047 INFO ]: Computing forward predicates... [2018-06-22 19:05:43,481 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 4 [2018-06-22 19:05:43,652 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:05:43,674 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:05:43,674 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:05:43,675 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:05:43,675 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:05:43,675 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:05:43,675 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:05:44,138 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-06-22 19:05:44,299 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:05:44,300 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:05:44,301 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:05:44,301 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:05:44,301 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:05:44,302 INFO ]: With dead ends: 15 [2018-06-22 19:05:44,302 INFO ]: Without dead ends: 15 [2018-06-22 19:05:44,302 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:05:44,303 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:05:44,306 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:05:44,306 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:05:44,306 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:05:44,306 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:05:44,306 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:05:44,307 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:05:44,307 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:05:44,307 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:05:44,307 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:05:44,307 INFO ]: Found error trace [2018-06-22 19:05:44,307 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:05:44,307 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:05:44,307 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:05:44,307 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:05:44,307 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:05:44,308 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:44,308 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:05:44,308 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:44,406 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:05:44,619 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:05:44,620 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:05:44,620 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 19:05:44,627 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:05:44,765 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:05:44,765 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:05:44,771 INFO ]: Computing forward predicates... [2018-06-22 19:05:45,002 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:05:45,034 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:05:45,034 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:05:45,034 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:05:45,035 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:05:45,035 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:05:45,035 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:05:45,472 WARN ]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-22 19:05:45,770 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:05:45,770 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:05:45,771 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:05:45,771 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:05:45,771 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:05:45,772 INFO ]: With dead ends: 17 [2018-06-22 19:05:45,772 INFO ]: Without dead ends: 17 [2018-06-22 19:05:45,772 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:05:45,772 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:05:45,775 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:05:45,776 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:05:45,776 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:05:45,777 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:05:45,777 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:05:45,778 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:05:45,778 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:05:45,778 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:05:45,778 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:05:45,778 INFO ]: Found error trace [2018-06-22 19:05:45,778 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:05:45,778 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:05:45,779 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:05:45,779 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:05:45,779 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:05:45,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:45,781 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:05:45,781 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:45,943 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:05:46,341 WARN ]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-06-22 19:05:46,787 WARN ]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-06-22 19:05:47,212 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:05:47,212 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:05:47,212 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 19:05:47,224 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:05:47,430 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:05:47,430 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:05:47,439 INFO ]: Computing forward predicates... [2018-06-22 19:05:47,785 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 19:05:48,662 WARN ]: Spent 209.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 30 [2018-06-22 19:05:48,822 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:05:48,858 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:05:48,858 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:05:48,858 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:05:48,858 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:05:48,858 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:05:48,858 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:05:49,276 WARN ]: Spent 319.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 105 [2018-06-22 19:05:49,573 WARN ]: Spent 231.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-06-22 19:05:49,818 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-06-22 19:05:50,275 WARN ]: Spent 425.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2018-06-22 19:05:50,394 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:05:50,394 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:05:50,398 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:05:50,398 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:05:50,398 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:05:50,399 INFO ]: With dead ends: 19 [2018-06-22 19:05:50,399 INFO ]: Without dead ends: 19 [2018-06-22 19:05:50,399 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:05:50,399 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:05:50,402 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:05:50,402 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:05:50,403 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:05:50,403 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:05:50,403 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:05:50,403 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:05:50,403 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:05:50,403 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:05:50,404 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:05:50,405 INFO ]: Found error trace [2018-06-22 19:05:50,405 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:05:50,405 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:05:50,405 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:05:50,405 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:05:50,405 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:05:50,405 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:50,405 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:05:50,405 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:05:50,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:05:51,044 WARN ]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 19:05:52,751 WARN ]: Spent 1.63 s on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2018-06-22 19:05:53,021 INFO ]: Checked inductivity of 36 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 19:05:53,021 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:05:53,021 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 19:05:53,036 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:05:53,228 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:05:53,228 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:05:53,236 INFO ]: Computing forward predicates... [2018-06-22 19:05:54,613 WARN ]: Spent 946.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2018-06-22 19:05:55,479 WARN ]: Spent 722.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2018-06-22 19:05:55,789 WARN ]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-06-22 19:05:58,189 WARN ]: Spent 1.76 s on a formula simplification. DAG size of input: 253 DAG size of output: 52 [2018-06-22 19:05:58,475 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:05:58,504 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:05:58,504 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2018-06-22 19:05:58,505 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:05:58,505 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:05:58,505 INFO ]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:05:58,505 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 17 states. [2018-06-22 19:05:59,333 WARN ]: Spent 774.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 140 [2018-06-22 19:05:59,552 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 70 [2018-06-22 19:06:00,641 WARN ]: Spent 948.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 149 [2018-06-22 19:06:02,586 WARN ]: Spent 1.84 s on a formula simplification. DAG size of input: 239 DAG size of output: 177 [2018-06-22 19:06:03,653 WARN ]: Spent 1.01 s on a formula simplification. DAG size of input: 202 DAG size of output: 155 [2018-06-22 19:06:05,344 WARN ]: Spent 1.60 s on a formula simplification. DAG size of input: 202 DAG size of output: 159 [2018-06-22 19:06:05,370 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:06:05,398 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:06:05,398 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:06:05,399 INFO ]: Start accepts. Automaton has 17 states. Word has length 25 [2018-06-22 19:06:05,399 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:06:05,399 INFO ]: With dead ends: 15 [2018-06-22 19:06:05,399 INFO ]: Without dead ends: 0 [2018-06-22 19:06:05,399 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-06-22 19:06:05,399 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:06:05,399 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:06:05,399 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:06:05,400 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:06:05,400 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 19:06:05,400 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:06:05,400 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:06:05,400 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:06:05,400 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:06:05,400 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:06:05,405 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:06:05 BoogieIcfgContainer [2018-06-22 19:06:05,405 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:06:05,406 INFO ]: Toolchain (without parser) took 24384.74 ms. Allocated memory was 306.7 MB in the beginning and 647.5 MB in the end (delta: 340.8 MB). Free memory was 247.3 MB in the beginning and 461.7 MB in the end (delta: -214.5 MB). Peak memory consumption was 126.3 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:05,409 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 306.7 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:06:05,410 INFO ]: ChcToBoogie took 97.24 ms. Allocated memory is still 306.7 MB. Free memory was 247.3 MB in the beginning and 245.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:05,410 INFO ]: Boogie Preprocessor took 98.33 ms. Allocated memory is still 306.7 MB. Free memory was 245.3 MB in the beginning and 243.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:05,410 INFO ]: RCFGBuilder took 391.13 ms. Allocated memory is still 306.7 MB. Free memory was 243.3 MB in the beginning and 218.1 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:05,411 INFO ]: TraceAbstraction took 23778.41 ms. Allocated memory was 306.7 MB in the beginning and 647.5 MB in the end (delta: 340.8 MB). Free memory was 218.1 MB in the beginning and 461.7 MB in the end (delta: -243.6 MB). Peak memory consumption was 97.2 MB. Max. memory is 3.6 GB. [2018-06-22 19:06:05,413 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 306.7 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 97.24 ms. Allocated memory is still 306.7 MB. Free memory was 247.3 MB in the beginning and 245.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 98.33 ms. Allocated memory is still 306.7 MB. Free memory was 245.3 MB in the beginning and 243.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 391.13 ms. Allocated memory is still 306.7 MB. Free memory was 243.3 MB in the beginning and 218.1 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 23778.41 ms. Allocated memory was 306.7 MB in the beginning and 647.5 MB in the end (delta: 340.8 MB). Free memory was 218.1 MB in the beginning and 461.7 MB in the end (delta: -243.6 MB). Peak memory consumption was 97.2 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, 23.7s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 9.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 69 SDslu, 197 SDs, 0 SdLazy, 170 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 17.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 82588 SizeOfPredicates, 105 NumberOfNonLiveVariables, 3136 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 54/140 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_e7_606.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-06-05-421.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e7_606.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-06-05-421.csv Received shutdown request...