java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_all.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 16:27:48,956 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 16:27:48,958 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 16:27:48,969 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 16:27:48,970 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 16:27:48,973 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 16:27:48,975 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 16:27:48,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 16:27:48,978 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 16:27:48,980 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 16:27:48,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 16:27:48,982 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 16:27:48,982 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 16:27:48,983 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 16:27:48,986 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 16:27:48,987 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 16:27:48,989 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 16:27:48,992 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 16:27:48,994 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 16:27:48,995 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 16:27:48,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 16:27:48,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 16:27:48,999 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 16:27:48,999 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 16:27:49,000 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 16:27:49,001 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 16:27:49,002 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 16:27:49,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 16:27:49,003 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 16:27:49,004 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 16:27:49,004 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 16:27:49,005 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 16:27:49,005 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 16:27:49,006 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 16:27:49,007 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 16:27:49,007 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 16:27:49,020 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 16:27:49,020 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 16:27:49,021 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 16:27:49,021 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 16:27:49,022 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 16:27:49,022 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 16:27:49,023 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 16:27:49,023 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 16:27:49,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 16:27:49,023 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 16:27:49,023 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 16:27:49,024 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 16:27:49,024 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 16:27:49,024 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 16:27:49,024 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 16:27:49,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 16:27:49,024 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 16:27:49,026 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 16:27:49,026 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 16:27:49,072 INFO ]: Repository-Root is: /tmp [2018-06-18 16:27:49,086 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 16:27:49,089 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 16:27:49,091 INFO ]: Initializing SmtParser... [2018-06-18 16:27:49,091 INFO ]: SmtParser initialized [2018-06-18 16:27:49,092 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_all.smt2 [2018-06-18 16:27:49,094 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 [2018-06-18 16:27:49,186 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_all.smt2 unknown [2018-06-18 16:27:49,517 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_all.smt2 [2018-06-18 16:27:49,521 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 16:27:49,528 INFO ]: Walking toolchain with 4 elements. [2018-06-18 16:27:49,528 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 16:27:49,528 INFO ]: Initializing ChcToBoogie... [2018-06-18 16:27:49,528 INFO ]: ChcToBoogie initialized [2018-06-18 16:27:49,538 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:27:49" (1/1) ... [2018-06-18 16:27:49,594 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49 Unit [2018-06-18 16:27:49,594 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 16:27:49,595 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 16:27:49,595 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 16:27:49,595 INFO ]: Boogie Preprocessor initialized [2018-06-18 16:27:49,615 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49" (1/1) ... [2018-06-18 16:27:49,615 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49" (1/1) ... [2018-06-18 16:27:49,628 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49" (1/1) ... [2018-06-18 16:27:49,628 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49" (1/1) ... [2018-06-18 16:27:49,644 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49" (1/1) ... [2018-06-18 16:27:49,645 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49" (1/1) ... [2018-06-18 16:27:49,647 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49" (1/1) ... [2018-06-18 16:27:49,649 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 16:27:49,650 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 16:27:49,650 INFO ]: Initializing RCFGBuilder... [2018-06-18 16:27:49,650 INFO ]: RCFGBuilder initialized [2018-06-18 16:27:49,650 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49" (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) [2018-06-18 16:27:49,684 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 16:27:49,684 INFO ]: Found specification of procedure False [2018-06-18 16:27:49,684 INFO ]: Found implementation of procedure False [2018-06-18 16:27:49,684 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 16:27:49,684 INFO ]: Found specification of procedure state [2018-06-18 16:27:49,685 INFO ]: Found implementation of procedure state [2018-06-18 16:27:49,685 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 16:27:49,685 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 16:27:49,685 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 [2018-06-18 16:27:50,038 INFO ]: Using library mode [2018-06-18 16:27:50,038 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:27:50 BoogieIcfgContainer [2018-06-18 16:27:50,039 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 16:27:50,040 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 16:27:50,040 INFO ]: Initializing TraceAbstraction... [2018-06-18 16:27:50,048 INFO ]: TraceAbstraction initialized [2018-06-18 16:27:50,049 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:27:49" (1/3) ... [2018-06-18 16:27:50,050 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665b6595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 04:27:50, skipping insertion in model container [2018-06-18 16:27:50,050 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:27:49" (2/3) ... [2018-06-18 16:27:50,050 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665b6595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 04:27:50, skipping insertion in model container [2018-06-18 16:27:50,050 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:27:50" (3/3) ... [2018-06-18 16:27:50,055 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 16:27:50,066 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 16:27:50,074 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 16:27:50,113 INFO ]: Using default assertion order modulation [2018-06-18 16:27:50,114 INFO ]: Interprodecural is true [2018-06-18 16:27:50,114 INFO ]: Hoare is false [2018-06-18 16:27:50,114 INFO ]: Compute interpolants for FPandBP [2018-06-18 16:27:50,114 INFO ]: Backedges is TWOTRACK [2018-06-18 16:27:50,114 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 16:27:50,114 INFO ]: Difference is false [2018-06-18 16:27:50,114 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 16:27:50,114 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 16:27:50,127 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 16:27:50,137 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 16:27:50,137 INFO ]: Found error trace [2018-06-18 16:27:50,137 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:27:50,138 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:27:50,141 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 16:27:50,143 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:27:50,143 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:27:50,177 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:50,177 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:27:50,177 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:50,244 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:50,255 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:27:50,438 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 16:27:50,440 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 16:27:50,440 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 16:27:50,442 INFO ]: Interpolant automaton has 4 states [2018-06-18 16:27:50,452 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 16:27:50,453 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:27:50,455 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 16:27:50,549 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:27:50,549 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 16:27:50,550 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 16:27:50,551 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 16:27:50,552 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:27:50,562 INFO ]: With dead ends: 13 [2018-06-18 16:27:50,562 INFO ]: Without dead ends: 13 [2018-06-18 16:27:50,564 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 [2018-06-18 16:27:50,577 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 16:27:50,599 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 16:27:50,600 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 16:27:50,601 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 16:27:50,602 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 16:27:50,602 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:27:50,603 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 16:27:50,603 INFO ]: Interpolant automaton has 4 states. [2018-06-18 16:27:50,603 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 16:27:50,604 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 16:27:50,604 INFO ]: Found error trace [2018-06-18 16:27:50,604 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:27:50,604 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:27:50,605 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 16:27:50,605 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:27:50,605 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:27:50,606 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:50,606 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:27:50,606 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:50,661 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:50,662 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:27:51,331 WARN ]: Spent 455.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 27 [2018-06-18 16:27:51,445 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:27:51,446 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:27:51,446 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 [2018-06-18 16:27:51,455 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:27:51,566 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:51,581 INFO ]: Computing forward predicates... [2018-06-18 16:27:53,214 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 16 [2018-06-18 16:27:53,433 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:27:53,469 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:27:53,469 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 16:27:53,470 INFO ]: Interpolant automaton has 8 states [2018-06-18 16:27:53,470 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 16:27:53,470 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-18 16:27:53,470 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 16:27:53,850 WARN ]: Spent 220.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2018-06-18 16:27:54,001 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:27:54,002 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:27:54,002 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:27:54,002 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 16:27:54,002 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:27:54,003 INFO ]: With dead ends: 15 [2018-06-18 16:27:54,003 INFO ]: Without dead ends: 15 [2018-06-18 16:27:54,004 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-18 16:27:54,004 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 16:27:54,006 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 16:27:54,006 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 16:27:54,007 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 16:27:54,007 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 16:27:54,007 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:27:54,007 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 16:27:54,007 INFO ]: Interpolant automaton has 8 states. [2018-06-18 16:27:54,007 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 16:27:54,007 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 16:27:54,007 INFO ]: Found error trace [2018-06-18 16:27:54,008 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:27:54,008 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:27:54,008 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 16:27:54,008 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:27:54,008 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:27:54,009 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:54,009 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:27:54,009 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:54,095 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:54,096 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:27:54,469 WARN ]: Spent 141.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 50 [2018-06-18 16:27:54,684 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:27:54,684 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:27:54,684 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 [2018-06-18 16:27:54,693 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 16:27:54,799 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 16:27:54,799 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:54,805 INFO ]: Computing forward predicates... [2018-06-18 16:27:55,811 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:27:55,845 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:27:55,845 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-18 16:27:55,845 INFO ]: Interpolant automaton has 13 states [2018-06-18 16:27:55,845 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-18 16:27:55,846 INFO ]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-18 16:27:55,846 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-18 16:27:56,205 WARN ]: Spent 256.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2018-06-18 16:27:56,421 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-06-18 16:27:56,556 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:27:56,556 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 16:27:56,557 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 16:27:56,557 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-18 16:27:56,558 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:27:56,558 INFO ]: With dead ends: 17 [2018-06-18 16:27:56,558 INFO ]: Without dead ends: 17 [2018-06-18 16:27:56,559 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-06-18 16:27:56,559 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 16:27:56,564 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 16:27:56,564 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 16:27:56,564 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 16:27:56,564 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 16:27:56,565 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:27:56,565 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 16:27:56,565 INFO ]: Interpolant automaton has 13 states. [2018-06-18 16:27:56,565 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 16:27:56,565 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 16:27:56,565 INFO ]: Found error trace [2018-06-18 16:27:56,565 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:27:56,566 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:27:56,566 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 16:27:56,566 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:27:56,566 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:27:56,567 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:56,567 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:27:56,567 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:56,636 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:56,637 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:27:57,210 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2018-06-18 16:27:57,437 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:27:57,437 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:27:57,437 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 [2018-06-18 16:27:57,445 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 16:27:57,555 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 16:27:57,555 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:57,561 INFO ]: Computing forward predicates... [2018-06-18 16:27:58,316 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:27:58,338 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:27:58,338 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-18 16:27:58,338 INFO ]: Interpolant automaton has 17 states [2018-06-18 16:27:58,338 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-18 16:27:58,338 INFO ]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2018-06-18 16:27:58,338 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-18 16:27:58,654 WARN ]: Spent 241.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2018-06-18 16:27:58,995 WARN ]: Spent 302.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 110 [2018-06-18 16:27:59,254 WARN ]: Spent 217.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2018-06-18 16:27:59,485 WARN ]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2018-06-18 16:27:59,589 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:27:59,589 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 16:27:59,590 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 16:27:59,590 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-18 16:27:59,590 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:27:59,591 INFO ]: With dead ends: 19 [2018-06-18 16:27:59,591 INFO ]: Without dead ends: 19 [2018-06-18 16:27:59,591 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-06-18 16:27:59,591 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 16:27:59,594 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 16:27:59,594 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 16:27:59,595 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 16:27:59,595 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 16:27:59,595 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:27:59,595 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 16:27:59,595 INFO ]: Interpolant automaton has 17 states. [2018-06-18 16:27:59,595 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 16:27:59,596 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 16:27:59,596 INFO ]: Found error trace [2018-06-18 16:27:59,596 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:27:59,596 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:27:59,596 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-18 16:27:59,596 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:27:59,596 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:27:59,597 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:59,597 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:27:59,597 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:27:59,714 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:27:59,716 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:28:00,437 WARN ]: Spent 461.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 19 [2018-06-18 16:28:00,693 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2018-06-18 16:28:00,823 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 23 [2018-06-18 16:28:01,026 INFO ]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 16:28:01,026 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:28:01,026 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 [2018-06-18 16:28:01,032 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 16:28:01,129 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 16:28:01,129 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:28:01,136 INFO ]: Computing forward predicates... [2018-06-18 16:28:01,241 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:28:02,587 INFO ]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-18 16:28:02,609 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:28:02,609 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2018-06-18 16:28:02,609 INFO ]: Interpolant automaton has 19 states [2018-06-18 16:28:02,609 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-18 16:28:02,609 INFO ]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2018-06-18 16:28:02,610 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 19 states. [2018-06-18 16:28:02,836 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-06-18 16:28:03,005 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2018-06-18 16:28:03,292 WARN ]: Spent 260.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-06-18 16:28:03,492 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-06-18 16:28:03,671 WARN ]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2018-06-18 16:28:03,680 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:28:03,680 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:28:03,680 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-18 16:28:03,680 INFO ]: Start accepts. Automaton has 19 states. Word has length 25 [2018-06-18 16:28:03,681 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:28:03,681 INFO ]: With dead ends: 15 [2018-06-18 16:28:03,681 INFO ]: Without dead ends: 0 [2018-06-18 16:28:03,681 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2018-06-18 16:28:03,681 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 16:28:03,681 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 16:28:03,681 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 16:28:03,681 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 16:28:03,681 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-18 16:28:03,682 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:28:03,682 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 16:28:03,682 INFO ]: Interpolant automaton has 19 states. [2018-06-18 16:28:03,682 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 16:28:03,682 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 16:28:03,686 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 04:28:03 BoogieIcfgContainer [2018-06-18 16:28:03,686 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 16:28:03,687 INFO ]: Toolchain (without parser) took 14164.94 ms. Allocated memory was 306.7 MB in the beginning and 480.2 MB in the end (delta: 173.5 MB). Free memory was 253.1 MB in the beginning and 206.3 MB in the end (delta: 46.8 MB). Peak memory consumption was 220.4 MB. Max. memory is 3.6 GB. [2018-06-18 16:28:03,688 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:28:03,688 INFO ]: ChcToBoogie took 66.68 ms. Allocated memory is still 306.7 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:28:03,688 INFO ]: Boogie Preprocessor took 53.99 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 249.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:28:03,688 INFO ]: RCFGBuilder took 389.01 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 233.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:28:03,689 INFO ]: TraceAbstraction took 13646.03 ms. Allocated memory was 306.7 MB in the beginning and 480.2 MB in the end (delta: 173.5 MB). Free memory was 233.2 MB in the beginning and 206.3 MB in the end (delta: 26.9 MB). Peak memory consumption was 200.4 MB. Max. memory is 3.6 GB. [2018-06-18 16:28:03,690 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 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.68 ms. Allocated memory is still 306.7 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.99 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 249.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 389.01 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 233.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 13646.03 ms. Allocated memory was 306.7 MB in the beginning and 480.2 MB in the end (delta: 173.5 MB). Free memory was 233.2 MB in the beginning and 206.3 MB in the end (delta: 26.9 MB). Peak memory consumption was 200.4 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, 13.5s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 77 SDslu, 238 SDs, 0 SdLazy, 203 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 7.4s 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, 0.6s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 28588 SizeOfPredicates, 171 NumberOfNonLiveVariables, 2276 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 43/140 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/PRODUCER_CONSUMER_all.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_16-28-03-702.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_all.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_16-28-03-702.csv Received shutdown request...