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/speed2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:54:02,333 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:54:02,335 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:54:02,345 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:54:02,346 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:54:02,347 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:54:02,348 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:54:02,349 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:54:02,351 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:54:02,352 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:54:02,352 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:54:02,353 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:54:02,353 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:54:02,354 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:54:02,355 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:54:02,356 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:54:02,358 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:54:02,360 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:54:02,361 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:54:02,362 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:54:02,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:54:02,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:54:02,366 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:54:02,366 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:54:02,367 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:54:02,368 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:54:02,369 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:54:02,369 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:54:02,370 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:54:02,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:54:02,371 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:54:02,372 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:54:02,372 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:54:02,373 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:54:02,374 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:54:02,374 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 19:54:02,387 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:54:02,387 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:54:02,388 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:54:02,388 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:54:02,389 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:54:02,389 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:54:02,390 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:54:02,390 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:54:02,390 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:54:02,390 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:54:02,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:54:02,391 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:54:02,391 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:54:02,391 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:54:02,391 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:54:02,392 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:54:02,392 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:54:02,392 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:54:02,392 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:54:02,393 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:54:02,394 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:54:02,445 INFO ]: Repository-Root is: /tmp [2018-06-22 19:54:02,457 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:54:02,463 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:54:02,464 INFO ]: Initializing SmtParser... [2018-06-22 19:54:02,465 INFO ]: SmtParser initialized [2018-06-22 19:54:02,465 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2.smt2 [2018-06-22 19:54:02,467 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 19:54:02,562 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2.smt2 unknown [2018-06-22 19:54:02,860 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2.smt2 [2018-06-22 19:54:02,865 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:54:02,872 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:54:02,873 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:54:02,873 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:54:02,873 INFO ]: ChcToBoogie initialized [2018-06-22 19:54:02,876 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:54:02" (1/1) ... [2018-06-22 19:54:02,923 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02 Unit [2018-06-22 19:54:02,923 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:54:02,924 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:54:02,924 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:54:02,924 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:54:02,946 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02" (1/1) ... [2018-06-22 19:54:02,946 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02" (1/1) ... [2018-06-22 19:54:02,954 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02" (1/1) ... [2018-06-22 19:54:02,954 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02" (1/1) ... [2018-06-22 19:54:02,958 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02" (1/1) ... [2018-06-22 19:54:02,959 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02" (1/1) ... [2018-06-22 19:54:02,960 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02" (1/1) ... [2018-06-22 19:54:02,962 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:54:02,963 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:54:02,963 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:54:02,963 INFO ]: RCFGBuilder initialized [2018-06-22 19:54:02,964 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02" (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 19:54:02,973 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:54:02,973 INFO ]: Found specification of procedure False [2018-06-22 19:54:02,973 INFO ]: Found implementation of procedure False [2018-06-22 19:54:02,973 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:54:02,973 INFO ]: Found specification of procedure state [2018-06-22 19:54:02,973 INFO ]: Found implementation of procedure state [2018-06-22 19:54:02,973 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:54:02,973 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:54:02,973 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 19:54:03,160 INFO ]: Using library mode [2018-06-22 19:54:03,161 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:54:03 BoogieIcfgContainer [2018-06-22 19:54:03,161 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:54:03,163 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:54:03,163 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:54:03,166 INFO ]: TraceAbstraction initialized [2018-06-22 19:54:03,166 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:54:02" (1/3) ... [2018-06-22 19:54:03,167 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f833fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:54:03, skipping insertion in model container [2018-06-22 19:54:03,167 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:54:02" (2/3) ... [2018-06-22 19:54:03,167 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f833fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:54:03, skipping insertion in model container [2018-06-22 19:54:03,167 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:54:03" (3/3) ... [2018-06-22 19:54:03,169 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:54:03,178 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:54:03,190 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:54:03,224 INFO ]: Using default assertion order modulation [2018-06-22 19:54:03,224 INFO ]: Interprodecural is true [2018-06-22 19:54:03,224 INFO ]: Hoare is false [2018-06-22 19:54:03,224 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:54:03,224 INFO ]: Backedges is TWOTRACK [2018-06-22 19:54:03,224 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:54:03,224 INFO ]: Difference is false [2018-06-22 19:54:03,224 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:54:03,224 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:54:03,237 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:54:03,248 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:54:03,249 INFO ]: Found error trace [2018-06-22 19:54:03,250 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:54:03,250 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:54:03,256 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:54:03,258 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:54:03,258 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:54:03,291 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:03,291 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:54:03,291 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:03,349 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:54:03,509 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:54:03,516 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:54:03,516 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:54:03,518 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:54:03,537 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:54:03,537 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:54:03,539 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:54:03,647 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:54:03,647 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:54:03,648 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:54:03,649 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:54:03,649 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:54:03,660 INFO ]: With dead ends: 13 [2018-06-22 19:54:03,660 INFO ]: Without dead ends: 13 [2018-06-22 19:54:03,661 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 19:54:03,673 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:54:03,705 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:54:03,706 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:54:03,707 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:54:03,708 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:54:03,709 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:54:03,709 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:54:03,709 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:54:03,709 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:54:03,710 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:54:03,710 INFO ]: Found error trace [2018-06-22 19:54:03,710 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:54:03,710 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:54:03,710 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:54:03,710 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:54:03,710 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:54:03,711 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:03,711 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:54:03,711 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:03,770 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:54:03,974 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:54:03,974 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:54:03,974 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 19:54:03,985 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:54:04,052 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:54:04,062 INFO ]: Computing forward predicates... [2018-06-22 19:54:04,512 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:54:04,533 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:54:04,533 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:54:04,534 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:54:04,534 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:54:04,534 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:54:04,534 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:54:04,839 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-22 19:54:04,903 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:54:04,903 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:54:04,904 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:54:04,904 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:54:04,905 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:54:04,905 INFO ]: With dead ends: 15 [2018-06-22 19:54:04,905 INFO ]: Without dead ends: 15 [2018-06-22 19:54:04,906 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:54:04,906 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:54:04,909 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:54:04,909 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:54:04,910 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:54:04,910 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:54:04,910 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:54:04,911 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:54:04,911 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:54:04,911 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:54:04,911 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:54:04,911 INFO ]: Found error trace [2018-06-22 19:54:04,911 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:54:04,911 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:54:04,911 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:54:04,912 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:54:04,912 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:54:04,912 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:04,912 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:54:04,912 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:05,004 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:54:06,121 WARN ]: Spent 786.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2018-06-22 19:54:06,657 WARN ]: Spent 450.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2018-06-22 19:54:06,858 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2018-06-22 19:54:06,870 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:54:06,870 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:54:06,870 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 19:54:06,885 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:54:06,937 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:54:06,937 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:54:06,942 INFO ]: Computing forward predicates... [2018-06-22 19:54:07,307 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2018-06-22 19:54:08,472 WARN ]: Spent 340.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 28 [2018-06-22 19:54:08,554 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:54:08,575 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:54:08,575 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:54:08,576 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:54:08,576 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:54:08,577 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:54:08,577 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:54:08,838 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-06-22 19:54:09,204 WARN ]: Spent 310.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2018-06-22 19:54:09,597 WARN ]: Spent 354.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 119 [2018-06-22 19:54:09,908 WARN ]: Spent 278.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 103 [2018-06-22 19:54:09,990 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:54:09,990 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:54:09,991 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:54:09,991 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:54:09,991 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:54:09,992 INFO ]: With dead ends: 17 [2018-06-22 19:54:09,992 INFO ]: Without dead ends: 17 [2018-06-22 19:54:09,992 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:54:09,992 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:54:09,995 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:54:09,996 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:54:09,996 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:54:09,996 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:54:09,997 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:54:09,997 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:54:09,997 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:54:09,997 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:54:09,997 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:54:09,997 INFO ]: Found error trace [2018-06-22 19:54:09,997 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:54:09,998 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:54:09,998 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 19:54:09,998 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:54:09,998 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:54:09,999 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:09,999 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:54:09,999 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:10,047 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:54:10,579 WARN ]: Spent 259.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2018-06-22 19:54:10,849 WARN ]: Spent 198.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2018-06-22 19:54:10,996 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:54:10,997 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:54:10,997 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 19:54:11,005 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:54:11,056 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:54:11,056 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:54:11,061 INFO ]: Computing forward predicates... [2018-06-22 19:54:11,386 WARN ]: Spent 239.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 27 [2018-06-22 19:54:11,397 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:54:12,835 WARN ]: Spent 1.29 s on a formula simplification. DAG size of input: 176 DAG size of output: 55 [2018-06-22 19:54:12,859 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:54:17,034 WARN ]: Spent 3.69 s on a formula simplification. DAG size of input: 384 DAG size of output: 68 [2018-06-22 19:54:17,535 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2018-06-22 19:54:18,312 WARN ]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 32 [2018-06-22 19:54:18,459 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:54:18,479 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:54:18,479 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:54:18,480 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:54:18,480 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:54:18,480 INFO ]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:54:18,480 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:54:18,775 WARN ]: Spent 258.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-06-22 19:54:20,678 WARN ]: Spent 1.84 s on a formula simplification. DAG size of input: 223 DAG size of output: 158 [2018-06-22 19:54:21,785 WARN ]: Spent 976.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 122 [2018-06-22 19:54:23,365 WARN ]: Spent 1.42 s on a formula simplification. DAG size of input: 212 DAG size of output: 119 [2018-06-22 19:54:25,001 WARN ]: Spent 1.51 s on a formula simplification. DAG size of input: 201 DAG size of output: 130 [2018-06-22 19:54:26,713 WARN ]: Spent 1.63 s on a formula simplification. DAG size of input: 200 DAG size of output: 137 [2018-06-22 19:54:26,793 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:54:26,793 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 19:54:26,794 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:54:26,794 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:54:26,794 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:54:26,795 INFO ]: With dead ends: 21 [2018-06-22 19:54:26,795 INFO ]: Without dead ends: 21 [2018-06-22 19:54:26,795 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2018-06-22 19:54:26,795 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 19:54:26,798 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 19:54:26,798 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 19:54:26,799 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 19:54:26,799 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-22 19:54:26,799 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:54:26,799 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 19:54:26,799 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:54:26,799 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 19:54:26,800 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 19:54:26,800 INFO ]: Found error trace [2018-06-22 19:54:26,800 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:54:26,800 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:54:26,800 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 4 times [2018-06-22 19:54:26,800 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:54:26,800 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:54:26,801 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:26,801 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:54:26,801 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:54:26,878 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:54:27,215 WARN ]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2018-06-22 19:54:27,462 INFO ]: Checked inductivity of 55 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 19:54:27,462 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:54:27,462 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 19:54:27,469 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:54:27,544 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:54:27,544 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:54:27,547 INFO ]: Computing forward predicates... [2018-06-22 19:54:27,655 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:54:27,684 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 19:54:29,238 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:54:29,244 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 19:54:29,720 INFO ]: Checked inductivity of 55 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-06-22 19:54:29,741 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:54:29,741 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2018-06-22 19:54:29,742 INFO ]: Interpolant automaton has 11 states [2018-06-22 19:54:29,742 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 19:54:29,742 INFO ]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:54:29,742 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2018-06-22 19:54:29,992 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-06-22 19:54:30,170 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:54:30,170 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:54:30,171 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:54:30,171 INFO ]: Start accepts. Automaton has 11 states. Word has length 29 [2018-06-22 19:54:30,171 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:54:30,171 INFO ]: With dead ends: 17 [2018-06-22 19:54:30,171 INFO ]: Without dead ends: 0 [2018-06-22 19:54:30,171 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-06-22 19:54:30,171 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:54:30,171 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:54:30,171 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:54:30,171 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:54:30,171 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 19:54:30,171 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:54:30,171 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:54:30,172 INFO ]: Interpolant automaton has 11 states. [2018-06-22 19:54:30,172 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:54:30,172 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:54:30,175 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:54:30 BoogieIcfgContainer [2018-06-22 19:54:30,175 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:54:30,176 INFO ]: Toolchain (without parser) took 27310.59 ms. Allocated memory was 308.8 MB in the beginning and 758.1 MB in the end (delta: 449.3 MB). Free memory was 259.2 MB in the beginning and 497.5 MB in the end (delta: -238.3 MB). Peak memory consumption was 211.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:54:30,177 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.8 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:54:30,178 INFO ]: ChcToBoogie took 51.24 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:54:30,178 INFO ]: Boogie Preprocessor took 38.05 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 255.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:54:30,178 INFO ]: RCFGBuilder took 198.34 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 243.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:54:30,179 INFO ]: TraceAbstraction took 27012.71 ms. Allocated memory was 308.8 MB in the beginning and 758.1 MB in the end (delta: 449.3 MB). Free memory was 243.3 MB in the beginning and 497.5 MB in the end (delta: -254.3 MB). Peak memory consumption was 195.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:54:30,182 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 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 51.24 ms. Allocated memory is still 308.8 MB. Free memory was 259.2 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.05 ms. Allocated memory is still 308.8 MB. Free memory was 257.2 MB in the beginning and 255.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 198.34 ms. Allocated memory is still 308.8 MB. Free memory was 255.2 MB in the beginning and 243.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 27012.71 ms. Allocated memory was 308.8 MB in the beginning and 758.1 MB in the end (delta: 449.3 MB). Free memory was 243.3 MB in the beginning and 497.5 MB in the end (delta: -254.3 MB). Peak memory consumption was 195.0 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, 26.9s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 10.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 57 SDslu, 220 SDs, 0 SdLazy, 175 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 71368 SizeOfPredicates, 115 NumberOfNonLiveVariables, 1211 ConjunctsInSsa, 200 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 102/178 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/speed2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-54-30-192.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/speed2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-54-30-192.csv Received shutdown request...