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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e3_112.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:09:34,033 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:09:34,035 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:09:34,046 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:09:34,046 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:09:34,047 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:09:34,048 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:09:34,050 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:09:34,051 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:09:34,052 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:09:34,053 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:09:34,053 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:09:34,054 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:09:34,055 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:09:34,056 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:09:34,056 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:09:34,058 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:09:34,060 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:09:34,062 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:09:34,063 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:09:34,064 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:09:34,066 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:09:34,066 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:09:34,067 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:09:34,067 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:09:34,068 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:09:34,069 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:09:34,070 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:09:34,071 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:09:34,071 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:09:34,072 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:09:34,072 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:09:34,073 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:09:34,074 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:09:34,074 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:09:34,074 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:09:34,088 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:09:34,088 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:09:34,089 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:09:34,089 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:09:34,090 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:09:34,090 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:09:34,090 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:09:34,091 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:09:34,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:09:34,091 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:09:34,092 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:09:34,092 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:09:34,092 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:09:34,092 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:09:34,092 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:09:34,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:09:34,093 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:09:34,094 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:09:34,095 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:09:34,148 INFO ]: Repository-Root is: /tmp [2018-06-22 09:09:34,164 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:09:34,167 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:09:34,169 INFO ]: Initializing SmtParser... [2018-06-22 09:09:34,169 INFO ]: SmtParser initialized [2018-06-22 09:09:34,170 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e3_112.smt2 [2018-06-22 09:09:34,172 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 09:09:34,266 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e3_112.smt2 unknown [2018-06-22 09:09:34,723 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e3_112.smt2 [2018-06-22 09:09:34,728 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:09:34,745 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:09:34,745 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:09:34,745 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:09:34,746 INFO ]: ChcToBoogie initialized [2018-06-22 09:09:34,749 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:09:34" (1/1) ... [2018-06-22 09:09:34,866 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34 Unit [2018-06-22 09:09:34,866 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:09:34,867 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:09:34,867 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:09:34,867 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:09:34,889 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34" (1/1) ... [2018-06-22 09:09:34,890 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34" (1/1) ... [2018-06-22 09:09:34,902 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34" (1/1) ... [2018-06-22 09:09:34,902 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34" (1/1) ... [2018-06-22 09:09:34,908 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34" (1/1) ... [2018-06-22 09:09:34,909 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34" (1/1) ... [2018-06-22 09:09:34,916 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34" (1/1) ... [2018-06-22 09:09:34,920 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:09:34,920 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:09:34,920 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:09:34,920 INFO ]: RCFGBuilder initialized [2018-06-22 09:09:34,921 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34" (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 09:09:34,931 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:09:34,931 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:09:34,931 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:09:34,931 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:09:34,931 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:09:34,931 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 09:09:35,312 INFO ]: Using library mode [2018-06-22 09:09:35,312 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:09:35 BoogieIcfgContainer [2018-06-22 09:09:35,312 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:09:35,314 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:09:35,314 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:09:35,322 INFO ]: TraceAbstraction initialized [2018-06-22 09:09:35,322 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:09:34" (1/3) ... [2018-06-22 09:09:35,323 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5853df00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:09:35, skipping insertion in model container [2018-06-22 09:09:35,323 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:09:34" (2/3) ... [2018-06-22 09:09:35,324 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5853df00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:09:35, skipping insertion in model container [2018-06-22 09:09:35,324 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:09:35" (3/3) ... [2018-06-22 09:09:35,325 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:09:35,334 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:09:35,343 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:09:35,388 INFO ]: Using default assertion order modulation [2018-06-22 09:09:35,388 INFO ]: Interprodecural is true [2018-06-22 09:09:35,388 INFO ]: Hoare is false [2018-06-22 09:09:35,388 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:09:35,388 INFO ]: Backedges is TWOTRACK [2018-06-22 09:09:35,388 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:09:35,388 INFO ]: Difference is false [2018-06-22 09:09:35,388 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:09:35,388 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:09:35,402 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:09:35,416 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:09:35,417 INFO ]: Found error trace [2018-06-22 09:09:35,418 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:09:35,418 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:09:35,422 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:09:35,423 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:09:35,423 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:09:35,456 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:35,456 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:09:35,456 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:35,545 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:09:35,699 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:09:35,703 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:09:35,703 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:09:35,704 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:09:35,715 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:09:35,716 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:09:35,718 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:09:35,794 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:09:35,795 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:09:35,795 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:09:35,796 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:09:35,797 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:09:35,806 INFO ]: With dead ends: 9 [2018-06-22 09:09:35,806 INFO ]: Without dead ends: 9 [2018-06-22 09:09:35,809 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:09:35,827 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:09:35,858 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:09:35,859 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:09:35,860 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:09:35,861 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:09:35,861 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:09:35,861 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:09:35,861 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:09:35,861 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:09:35,862 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:09:35,862 INFO ]: Found error trace [2018-06-22 09:09:35,862 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:09:35,862 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:09:35,862 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:09:35,862 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:09:35,862 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:09:35,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:35,863 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:09:35,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:35,989 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:09:36,316 WARN ]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-22 09:09:36,318 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:09:36,318 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:09:36,318 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) [2018-06-22 09:09:36,336 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:09:36,474 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:09:36,486 INFO ]: Computing forward predicates... [2018-06-22 09:09:36,788 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:09:36,821 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:09:36,821 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 09:09:36,821 INFO ]: Interpolant automaton has 6 states [2018-06-22 09:09:36,821 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 09:09:36,822 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:09:36,822 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 09:09:36,976 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:09:36,976 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:09:36,977 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:09:36,977 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 09:09:36,977 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:09:36,977 INFO ]: With dead ends: 11 [2018-06-22 09:09:36,977 INFO ]: Without dead ends: 11 [2018-06-22 09:09:36,978 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:09:36,978 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:09:36,979 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:09:36,979 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:09:36,980 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:09:36,980 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 09:09:36,980 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:09:36,980 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:09:36,980 INFO ]: Interpolant automaton has 6 states. [2018-06-22 09:09:36,980 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:09:36,980 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:09:36,980 INFO ]: Found error trace [2018-06-22 09:09:36,980 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:09:36,980 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:09:36,980 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 09:09:36,980 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:09:36,980 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:09:36,984 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:36,984 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:09:36,984 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:37,184 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:09:38,122 WARN ]: Spent 599.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2018-06-22 09:09:38,731 WARN ]: Spent 528.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2018-06-22 09:09:38,819 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:09:38,819 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:09:38,819 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 09:09:38,828 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:09:39,010 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:09:39,010 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:09:39,019 INFO ]: Computing forward predicates... [2018-06-22 09:09:39,506 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:09:39,527 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:09:39,527 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 09:09:39,527 INFO ]: Interpolant automaton has 10 states [2018-06-22 09:09:39,527 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 09:09:39,528 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:09:39,528 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 09:09:39,686 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2018-06-22 09:09:39,809 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-06-22 09:09:39,857 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:09:39,857 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 09:09:39,858 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 09:09:39,858 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 09:09:39,858 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:09:39,858 INFO ]: With dead ends: 13 [2018-06-22 09:09:39,858 INFO ]: Without dead ends: 13 [2018-06-22 09:09:39,859 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 09:09:39,859 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 09:09:39,860 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 09:09:39,860 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 09:09:39,861 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 09:09:39,861 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 09:09:39,861 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:09:39,861 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 09:09:39,861 INFO ]: Interpolant automaton has 10 states. [2018-06-22 09:09:39,861 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 09:09:39,862 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 09:09:39,862 INFO ]: Found error trace [2018-06-22 09:09:39,862 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:09:39,862 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:09:39,862 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 09:09:39,862 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:09:39,862 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:09:39,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:39,863 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:09:39,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:40,217 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:09:41,295 WARN ]: Spent 401.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 32 [2018-06-22 09:09:42,080 WARN ]: Spent 682.00 ms on a formula simplification. DAG size of input: 400 DAG size of output: 51 [2018-06-22 09:09:42,710 WARN ]: Spent 563.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 50 [2018-06-22 09:09:43,689 WARN ]: Spent 890.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 41 [2018-06-22 09:09:43,721 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:09:43,721 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:09:43,722 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 09:09:43,731 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:09:43,978 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 09:09:43,978 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:09:43,988 INFO ]: Computing forward predicates... [2018-06-22 09:09:44,156 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 09:09:44,238 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 09:09:45,256 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:09:45,280 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:09:45,280 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 09:09:45,280 INFO ]: Interpolant automaton has 14 states [2018-06-22 09:09:45,281 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 09:09:45,281 INFO ]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2018-06-22 09:09:45,281 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 09:09:45,634 WARN ]: Spent 243.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 65 [2018-06-22 09:09:45,936 WARN ]: Spent 280.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2018-06-22 09:09:46,114 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2018-06-22 09:09:46,295 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:09:46,295 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 09:09:46,295 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 09:09:46,295 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 09:09:46,295 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:09:46,296 INFO ]: With dead ends: 15 [2018-06-22 09:09:46,296 INFO ]: Without dead ends: 15 [2018-06-22 09:09:46,297 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-06-22 09:09:46,297 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 09:09:46,298 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 09:09:46,298 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 09:09:46,299 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 09:09:46,299 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 09:09:46,299 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:09:46,299 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 09:09:46,299 INFO ]: Interpolant automaton has 14 states. [2018-06-22 09:09:46,299 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 09:09:46,300 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 09:09:46,300 INFO ]: Found error trace [2018-06-22 09:09:46,300 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:09:46,300 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:09:46,300 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 4 times [2018-06-22 09:09:46,300 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:09:46,300 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:09:46,301 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:46,301 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:09:46,301 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:09:47,488 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-22 09:10:40,784 WARN ]: Removed 2 from assertion stack [2018-06-22 09:10:40,784 WARN ]: Verification canceled [2018-06-22 09:10:40,788 WARN ]: Timeout [2018-06-22 09:10:40,789 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:10:40 BoogieIcfgContainer [2018-06-22 09:10:40,789 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:10:40,789 INFO ]: Toolchain (without parser) took 66061.21 ms. Allocated memory was 307.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 249.2 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 09:10:40,790 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:10:40,790 INFO ]: ChcToBoogie took 121.21 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 246.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:10:40,791 INFO ]: Boogie Preprocessor took 52.80 ms. Allocated memory is still 307.8 MB. Free memory was 246.2 MB in the beginning and 245.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:10:40,791 INFO ]: RCFGBuilder took 392.10 ms. Allocated memory is still 307.8 MB. Free memory was 245.1 MB in the beginning and 213.6 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 3.6 GB. [2018-06-22 09:10:40,794 INFO ]: TraceAbstraction took 65474.53 ms. Allocated memory was 307.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 213.6 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 09:10:40,796 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 121.21 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 246.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.80 ms. Allocated memory is still 307.8 MB. Free memory was 246.2 MB in the beginning and 245.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 392.10 ms. Allocated memory is still 307.8 MB. Free memory was 245.1 MB in the beginning and 213.6 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65474.53 ms. Allocated memory was 307.8 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 213.6 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 7, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 3533. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.4s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 115 SDs, 0 SdLazy, 76 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 7142 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2895 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_2_e3_112.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-10-40-811.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_2_e3_112.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-10-40-811.csv Completed graceful shutdown