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/metros_1_e2_1102_e7_1163.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 16:04:38,896 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 16:04:38,898 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 16:04:38,916 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 16:04:38,917 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 16:04:38,918 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 16:04:38,919 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 16:04:38,921 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 16:04:38,923 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 16:04:38,925 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 16:04:38,926 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 16:04:38,927 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 16:04:38,928 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 16:04:38,929 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 16:04:38,929 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 16:04:38,939 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 16:04:38,941 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 16:04:38,943 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 16:04:38,945 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 16:04:38,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 16:04:38,953 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 16:04:38,955 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 16:04:38,956 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 16:04:38,956 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 16:04:38,957 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 16:04:38,962 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 16:04:38,963 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 16:04:38,964 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 16:04:38,969 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 16:04:38,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 16:04:38,970 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 16:04:38,971 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 16:04:38,971 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 16:04:38,972 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 16:04:38,973 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 16:04:38,973 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 16:04:38,998 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 16:04:38,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 16:04:39,001 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 16:04:39,001 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 16:04:39,002 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 16:04:39,003 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 16:04:39,003 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 16:04:39,003 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 16:04:39,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 16:04:39,003 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 16:04:39,003 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 16:04:39,004 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 16:04:39,005 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 16:04:39,005 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 16:04:39,005 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 16:04:39,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 16:04:39,005 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 16:04:39,007 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 16:04:39,007 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 16:04:39,065 INFO ]: Repository-Root is: /tmp [2018-06-18 16:04:39,077 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 16:04:39,082 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 16:04:39,084 INFO ]: Initializing SmtParser... [2018-06-18 16:04:39,084 INFO ]: SmtParser initialized [2018-06-18 16:04:39,085 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 [2018-06-18 16:04:39,086 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 16:04:39,183 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 unknown [2018-06-18 16:04:39,626 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e7_1163.smt2 [2018-06-18 16:04:39,640 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 16:04:39,645 INFO ]: Walking toolchain with 4 elements. [2018-06-18 16:04:39,645 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 16:04:39,645 INFO ]: Initializing ChcToBoogie... [2018-06-18 16:04:39,645 INFO ]: ChcToBoogie initialized [2018-06-18 16:04:39,669 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:04:39" (1/1) ... [2018-06-18 16:04:39,793 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39 Unit [2018-06-18 16:04:39,794 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 16:04:39,794 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 16:04:39,795 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 16:04:39,795 INFO ]: Boogie Preprocessor initialized [2018-06-18 16:04:39,827 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39" (1/1) ... [2018-06-18 16:04:39,827 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39" (1/1) ... [2018-06-18 16:04:39,843 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39" (1/1) ... [2018-06-18 16:04:39,843 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39" (1/1) ... [2018-06-18 16:04:39,861 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39" (1/1) ... [2018-06-18 16:04:39,862 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39" (1/1) ... [2018-06-18 16:04:39,864 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39" (1/1) ... [2018-06-18 16:04:39,877 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 16:04:39,878 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 16:04:39,878 INFO ]: Initializing RCFGBuilder... [2018-06-18 16:04:39,878 INFO ]: RCFGBuilder initialized [2018-06-18 16:04:39,879 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39" (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 16:04:39,911 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 16:04:39,911 INFO ]: Found specification of procedure False [2018-06-18 16:04:39,911 INFO ]: Found implementation of procedure False [2018-06-18 16:04:39,911 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 16:04:39,911 INFO ]: Found specification of procedure state [2018-06-18 16:04:39,911 INFO ]: Found implementation of procedure state [2018-06-18 16:04:39,911 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 16:04:39,911 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 16:04:39,911 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 16:04:40,366 INFO ]: Using library mode [2018-06-18 16:04:40,367 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:04:40 BoogieIcfgContainer [2018-06-18 16:04:40,367 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 16:04:40,369 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 16:04:40,369 INFO ]: Initializing TraceAbstraction... [2018-06-18 16:04:40,376 INFO ]: TraceAbstraction initialized [2018-06-18 16:04:40,376 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 04:04:39" (1/3) ... [2018-06-18 16:04:40,377 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d58b391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 04:04:40, skipping insertion in model container [2018-06-18 16:04:40,377 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 04:04:39" (2/3) ... [2018-06-18 16:04:40,378 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d58b391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 04:04:40, skipping insertion in model container [2018-06-18 16:04:40,378 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 04:04:40" (3/3) ... [2018-06-18 16:04:40,380 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 16:04:40,393 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 16:04:40,407 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 16:04:40,461 INFO ]: Using default assertion order modulation [2018-06-18 16:04:40,462 INFO ]: Interprodecural is true [2018-06-18 16:04:40,462 INFO ]: Hoare is false [2018-06-18 16:04:40,462 INFO ]: Compute interpolants for FPandBP [2018-06-18 16:04:40,462 INFO ]: Backedges is TWOTRACK [2018-06-18 16:04:40,462 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 16:04:40,462 INFO ]: Difference is false [2018-06-18 16:04:40,462 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 16:04:40,462 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 16:04:40,477 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 16:04:40,491 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 16:04:40,491 INFO ]: Found error trace [2018-06-18 16:04:40,492 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:04:40,493 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:04:40,501 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 16:04:40,503 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:04:40,503 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:04:40,540 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:40,540 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:04:40,540 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:40,649 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:04:40,664 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:04:40,863 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 16:04:40,866 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 16:04:40,866 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 16:04:40,869 INFO ]: Interpolant automaton has 4 states [2018-06-18 16:04:40,881 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 16:04:40,881 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 16:04:40,883 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 16:04:41,022 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:04:41,022 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 16:04:41,023 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 16:04:41,024 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 16:04:41,024 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:04:41,046 INFO ]: With dead ends: 13 [2018-06-18 16:04:41,046 INFO ]: Without dead ends: 13 [2018-06-18 16:04:41,057 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 16:04:41,079 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 16:04:41,108 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 16:04:41,110 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 16:04:41,110 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 16:04:41,113 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 16:04:41,113 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:04:41,113 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 16:04:41,113 INFO ]: Interpolant automaton has 4 states. [2018-06-18 16:04:41,113 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 16:04:41,115 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 16:04:41,115 INFO ]: Found error trace [2018-06-18 16:04:41,115 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:04:41,115 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:04:41,115 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 16:04:41,115 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:04:41,115 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:04:41,116 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:41,116 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:04:41,116 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:41,221 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:04:41,222 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:04:41,464 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:04:41,465 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:04:41,465 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 16:04:41,475 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:04:41,625 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:04:41,637 INFO ]: Computing forward predicates... [2018-06-18 16:04:41,913 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 16:04:41,937 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:04:41,937 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-18 16:04:41,937 INFO ]: Interpolant automaton has 8 states [2018-06-18 16:04:41,938 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-18 16:04:41,938 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-18 16:04:41,938 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-18 16:04:42,438 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-06-18 16:04:42,524 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:04:42,524 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:04:42,524 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 16:04:42,524 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-18 16:04:42,525 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:04:42,525 INFO ]: With dead ends: 15 [2018-06-18 16:04:42,525 INFO ]: Without dead ends: 15 [2018-06-18 16:04:42,526 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 [2018-06-18 16:04:42,526 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 16:04:42,529 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 16:04:42,529 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 16:04:42,529 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 16:04:42,530 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 16:04:42,530 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:04:42,530 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 16:04:42,530 INFO ]: Interpolant automaton has 8 states. [2018-06-18 16:04:42,530 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 16:04:42,530 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 16:04:42,530 INFO ]: Found error trace [2018-06-18 16:04:42,530 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:04:42,531 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:04:42,531 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 16:04:42,531 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:04:42,531 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:04:42,532 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:42,532 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 16:04:42,532 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:42,609 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:04:42,609 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:04:43,064 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:04:43,064 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:04:43,064 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 16:04:43,079 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 16:04:43,216 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 16:04:43,216 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:04:43,222 INFO ]: Computing forward predicates... [2018-06-18 16:04:43,678 WARN ]: Spent 202.00 ms on a formula simplification. DAG size of input: 5 DAG size of output: 4 [2018-06-18 16:04:43,890 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 16:04:43,911 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:04:43,911 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-18 16:04:43,912 INFO ]: Interpolant automaton has 12 states [2018-06-18 16:04:43,912 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-18 16:04:43,913 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-18 16:04:43,913 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-18 16:04:44,215 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-06-18 16:04:44,247 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:04:44,247 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 16:04:44,249 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 16:04:44,249 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-18 16:04:44,249 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:04:44,250 INFO ]: With dead ends: 17 [2018-06-18 16:04:44,250 INFO ]: Without dead ends: 17 [2018-06-18 16:04:44,251 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-06-18 16:04:44,251 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 16:04:44,255 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 16:04:44,256 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 16:04:44,256 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 16:04:44,256 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 16:04:44,256 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:04:44,256 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 16:04:44,256 INFO ]: Interpolant automaton has 12 states. [2018-06-18 16:04:44,257 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 16:04:44,257 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 16:04:44,257 INFO ]: Found error trace [2018-06-18 16:04:44,257 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:04:44,257 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:04:44,257 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 16:04:44,258 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:04:44,258 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:04:44,258 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:44,258 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:04:44,258 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:44,432 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:04:44,433 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:04:44,951 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-06-18 16:04:45,226 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:04:45,226 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:04:45,226 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) [2018-06-18 16:04:45,241 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 16:04:45,426 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 16:04:45,426 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:04:45,433 INFO ]: Computing forward predicates... [2018-06-18 16:04:46,181 WARN ]: Spent 244.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2018-06-18 16:04:46,441 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 16:04:46,462 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:04:46,462 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-18 16:04:46,463 INFO ]: Interpolant automaton has 17 states [2018-06-18 16:04:46,463 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-18 16:04:46,463 INFO ]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2018-06-18 16:04:46,463 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-18 16:04:47,113 WARN ]: Spent 548.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 140 [2018-06-18 16:04:47,372 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2018-06-18 16:04:47,917 WARN ]: Spent 344.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2018-06-18 16:04:48,414 WARN ]: Spent 433.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2018-06-18 16:04:48,464 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:04:48,464 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 16:04:48,465 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 16:04:48,465 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-18 16:04:48,466 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:04:48,466 INFO ]: With dead ends: 19 [2018-06-18 16:04:48,466 INFO ]: Without dead ends: 19 [2018-06-18 16:04:48,467 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-06-18 16:04:48,467 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 16:04:48,470 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 16:04:48,470 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 16:04:48,470 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 16:04:48,470 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 16:04:48,470 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:04:48,471 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 16:04:48,471 INFO ]: Interpolant automaton has 17 states. [2018-06-18 16:04:48,471 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 16:04:48,471 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 16:04:48,471 INFO ]: Found error trace [2018-06-18 16:04:48,471 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 16:04:48,471 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 16:04:48,472 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-18 16:04:48,472 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 16:04:48,472 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 16:04:48,472 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:48,472 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 16:04:48,472 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 16:04:48,586 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:04:48,587 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 16:04:48,991 WARN ]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-18 16:04:49,495 WARN ]: Spent 432.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2018-06-18 16:04:49,556 INFO ]: Checked inductivity of 36 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-18 16:04:49,556 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 16:04:49,556 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 16:04:49,564 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 16:04:49,752 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 16:04:49,752 INFO ]: Conjunction of SSA is unsat [2018-06-18 16:04:49,761 INFO ]: Computing forward predicates... [2018-06-18 16:04:49,906 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:49,919 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:49,933 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:49,938 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:49,943 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:49,947 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:49,950 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:49,961 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:49,973 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:49,984 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:49,995 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:49,999 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:50,003 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:50,016 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:50,024 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:50,028 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:50,031 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:50,037 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:50,043 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:50,045 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:50,047 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:50,049 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 16:04:50,051 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:50,058 WARN ]: expecting exponential blowup for input size 7 [2018-06-18 16:04:52,705 WARN ]: Spent 1.15 s on a formula simplification. DAG size of input: 150 DAG size of output: 57 [2018-06-18 16:04:53,341 WARN ]: Spent 192.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 32 [2018-06-18 16:04:55,421 WARN ]: Spent 236.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2018-06-18 16:04:55,441 INFO ]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 16:04:55,462 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 16:04:55,462 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2018-06-18 16:04:55,462 INFO ]: Interpolant automaton has 17 states [2018-06-18 16:04:55,462 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-18 16:04:55,462 INFO ]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2018-06-18 16:04:55,463 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 17 states. [2018-06-18 16:04:55,597 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-06-18 16:04:56,297 WARN ]: Spent 654.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 134 [2018-06-18 16:04:57,118 WARN ]: Spent 761.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 157 [2018-06-18 16:04:57,912 WARN ]: Spent 760.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 156 [2018-06-18 16:04:57,925 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 16:04:57,925 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 16:04:57,925 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 16:04:57,925 INFO ]: Start accepts. Automaton has 17 states. Word has length 25 [2018-06-18 16:04:57,925 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 16:04:57,925 INFO ]: With dead ends: 15 [2018-06-18 16:04:57,925 INFO ]: Without dead ends: 0 [2018-06-18 16:04:57,926 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2018-06-18 16:04:57,926 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 16:04:57,926 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 16:04:57,926 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 16:04:57,926 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 16:04:57,926 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-18 16:04:57,926 INFO ]: Finished accepts. word is rejected. [2018-06-18 16:04:57,926 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 16:04:57,926 INFO ]: Interpolant automaton has 17 states. [2018-06-18 16:04:57,926 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 16:04:57,926 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 16:04:57,931 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 04:04:57 BoogieIcfgContainer [2018-06-18 16:04:57,931 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 16:04:57,932 INFO ]: Toolchain (without parser) took 18291.69 ms. Allocated memory was 307.2 MB in the beginning and 577.2 MB in the end (delta: 270.0 MB). Free memory was 248.6 MB in the beginning and 210.9 MB in the end (delta: 37.7 MB). Peak memory consumption was 307.7 MB. Max. memory is 3.6 GB. [2018-06-18 16:04:57,933 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 16:04:57,935 INFO ]: ChcToBoogie took 148.77 ms. Allocated memory is still 307.2 MB. Free memory was 247.6 MB in the beginning and 242.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:04:57,935 INFO ]: Boogie Preprocessor took 82.89 ms. Allocated memory is still 307.2 MB. Free memory was 242.6 MB in the beginning and 240.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 16:04:57,936 INFO ]: RCFGBuilder took 488.97 ms. Allocated memory is still 307.2 MB. Free memory was 240.7 MB in the beginning and 216.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. [2018-06-18 16:04:57,936 INFO ]: TraceAbstraction took 17561.97 ms. Allocated memory was 307.2 MB in the beginning and 577.2 MB in the end (delta: 270.0 MB). Free memory was 215.6 MB in the beginning and 210.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 274.7 MB. Max. memory is 3.6 GB. [2018-06-18 16:04:57,938 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 148.77 ms. Allocated memory is still 307.2 MB. Free memory was 247.6 MB in the beginning and 242.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 82.89 ms. Allocated memory is still 307.2 MB. Free memory was 242.6 MB in the beginning and 240.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 488.97 ms. Allocated memory is still 307.2 MB. Free memory was 240.7 MB in the beginning and 216.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 17561.97 ms. Allocated memory was 307.2 MB in the beginning and 577.2 MB in the end (delta: 270.0 MB). Free memory was 215.6 MB in the beginning and 210.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 274.7 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, 17.4s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 5.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 48 SDslu, 192 SDs, 0 SdLazy, 164 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 9.6s 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, 0.9s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 38268 SizeOfPredicates, 106 NumberOfNonLiveVariables, 3136 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 56/140 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e7_1163.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_16-04-57-950.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e7_1163.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_16-04-57-950.csv Received shutdown request...