java -Xss4m -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_1_e2_1102_e1_317.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 16:28:24,891 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 16:28:24,893 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 16:28:24,905 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 16:28:24,906 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 16:28:24,907 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 16:28:24,910 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 16:28:24,912 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 16:28:24,914 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 16:28:24,914 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 16:28:24,917 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 16:28:24,917 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 16:28:24,918 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 16:28:24,919 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 16:28:24,922 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 16:28:24,923 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 16:28:24,925 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 16:28:24,928 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 16:28:24,929 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 16:28:24,930 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 16:28:24,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 16:28:24,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 16:28:24,934 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 16:28:24,934 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 16:28:24,935 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 16:28:24,936 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 16:28:24,937 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 16:28:24,938 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 16:28:24,939 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 16:28:24,939 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 16:28:24,940 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 16:28:24,940 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 16:28:24,941 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 16:28:24,941 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 16:28:24,942 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 16:28:24,942 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 16:28:24,956 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 16:28:24,956 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 16:28:24,957 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 16:28:24,957 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 16:28:24,958 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 16:28:24,958 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 16:28:24,958 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 16:28:24,958 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 16:28:24,959 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 16:28:24,959 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 16:28:24,959 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 16:28:24,959 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 16:28:24,959 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:28:24,960 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 16:28:24,960 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 16:28:24,960 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 16:28:24,960 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 16:28:24,960 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 16:28:24,960 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 16:28:24,961 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 16:28:24,961 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 16:28:24,962 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 16:28:24,962 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 16:28:25,007 INFO ]: Repository-Root is: /tmp [2018-06-25 16:28:25,028 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 16:28:25,035 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 16:28:25,036 INFO ]: Initializing SmtParser... [2018-06-25 16:28:25,036 INFO ]: SmtParser initialized [2018-06-25 16:28:25,037 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e1_317.smt2 [2018-06-25 16:28:25,038 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 [2018-06-25 16:28:25,132 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e1_317.smt2 unknown [2018-06-25 16:28:25,579 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e1_317.smt2 [2018-06-25 16:28:25,593 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 16:28:25,603 INFO ]: Walking toolchain with 4 elements. [2018-06-25 16:28:25,603 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 16:28:25,604 INFO ]: Initializing ChcToBoogie... [2018-06-25 16:28:25,604 INFO ]: ChcToBoogie initialized [2018-06-25 16:28:25,616 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:28:25" (1/1) ... [2018-06-25 16:28:25,679 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25 Unit [2018-06-25 16:28:25,680 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 16:28:25,680 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 16:28:25,680 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 16:28:25,680 INFO ]: Boogie Preprocessor initialized [2018-06-25 16:28:25,702 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25" (1/1) ... [2018-06-25 16:28:25,702 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25" (1/1) ... [2018-06-25 16:28:25,712 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25" (1/1) ... [2018-06-25 16:28:25,712 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25" (1/1) ... [2018-06-25 16:28:25,719 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25" (1/1) ... [2018-06-25 16:28:25,721 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25" (1/1) ... [2018-06-25 16:28:25,723 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25" (1/1) ... [2018-06-25 16:28:25,727 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 16:28:25,728 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 16:28:25,728 INFO ]: Initializing RCFGBuilder... [2018-06-25 16:28:25,728 INFO ]: RCFGBuilder initialized [2018-06-25 16:28:25,729 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 16:28:25,746 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 16:28:25,746 INFO ]: Found specification of procedure gotoProc [2018-06-25 16:28:25,746 INFO ]: Found implementation of procedure gotoProc [2018-06-25 16:28:25,746 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 16:28:25,746 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 16:28:25,746 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 16:28:26,133 INFO ]: Using library mode [2018-06-25 16:28:26,133 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:28:26 BoogieIcfgContainer [2018-06-25 16:28:26,133 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 16:28:26,137 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 16:28:26,137 INFO ]: Initializing TraceAbstraction... [2018-06-25 16:28:26,140 INFO ]: TraceAbstraction initialized [2018-06-25 16:28:26,140 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 04:28:25" (1/3) ... [2018-06-25 16:28:26,141 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215ce2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 04:28:26, skipping insertion in model container [2018-06-25 16:28:26,141 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 04:28:25" (2/3) ... [2018-06-25 16:28:26,141 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215ce2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 04:28:26, skipping insertion in model container [2018-06-25 16:28:26,141 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 04:28:26" (3/3) ... [2018-06-25 16:28:26,143 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 16:28:26,153 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 16:28:26,162 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 16:28:26,221 INFO ]: Using default assertion order modulation [2018-06-25 16:28:26,221 INFO ]: Interprodecural is true [2018-06-25 16:28:26,221 INFO ]: Hoare is false [2018-06-25 16:28:26,221 INFO ]: Compute interpolants for FPandBP [2018-06-25 16:28:26,222 INFO ]: Backedges is TWOTRACK [2018-06-25 16:28:26,222 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 16:28:26,222 INFO ]: Difference is false [2018-06-25 16:28:26,222 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 16:28:26,222 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 16:28:26,234 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 16:28:26,250 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 16:28:26,250 INFO ]: Found error trace [2018-06-25 16:28:26,251 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:28:26,253 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:28:26,257 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 16:28:26,259 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:28:26,259 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:28:26,293 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:26,293 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:28:26,293 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:26,403 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:26,555 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:26,557 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 16:28:26,557 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 16:28:26,558 INFO ]: Interpolant automaton has 3 states [2018-06-25 16:28:26,569 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 16:28:26,569 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 16:28:26,572 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 16:28:26,675 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:28:26,676 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 16:28:26,676 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 16:28:26,677 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 16:28:26,677 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:28:26,684 INFO ]: With dead ends: 9 [2018-06-25 16:28:26,684 INFO ]: Without dead ends: 9 [2018-06-25 16:28:26,686 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 [2018-06-25 16:28:26,702 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 16:28:26,717 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 16:28:26,719 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 16:28:26,719 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 16:28:26,720 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 16:28:26,720 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:28:26,720 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 16:28:26,721 INFO ]: Interpolant automaton has 3 states. [2018-06-25 16:28:26,721 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 16:28:26,721 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 16:28:26,721 INFO ]: Found error trace [2018-06-25 16:28:26,721 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:28:26,721 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:28:26,721 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 16:28:26,721 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:28:26,721 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:28:26,722 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:26,722 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:28:26,722 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:26,826 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:26,984 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:26,984 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:28:26,984 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 [2018-06-25 16:28:26,993 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:28:27,152 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:27,163 INFO ]: Computing forward predicates... [2018-06-25 16:28:27,340 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:27,376 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:28:27,376 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 16:28:27,377 INFO ]: Interpolant automaton has 5 states [2018-06-25 16:28:27,377 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 16:28:27,377 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:28:27,377 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 16:28:27,462 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:28:27,462 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 16:28:27,462 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 16:28:27,462 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 16:28:27,462 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:28:27,463 INFO ]: With dead ends: 10 [2018-06-25 16:28:27,463 INFO ]: Without dead ends: 10 [2018-06-25 16:28:27,463 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 16:28:27,464 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 16:28:27,465 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 16:28:27,465 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 16:28:27,465 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 16:28:27,465 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 16:28:27,465 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:28:27,465 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 16:28:27,465 INFO ]: Interpolant automaton has 5 states. [2018-06-25 16:28:27,465 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 16:28:27,465 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 16:28:27,465 INFO ]: Found error trace [2018-06-25 16:28:27,466 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:28:27,466 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:28:27,466 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 16:28:27,466 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:28:27,466 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:28:27,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:27,467 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 16:28:27,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:27,555 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:27,744 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:27,744 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:28:27,744 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 [2018-06-25 16:28:27,750 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 16:28:27,919 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 16:28:27,919 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:27,925 INFO ]: Computing forward predicates... [2018-06-25 16:28:28,472 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:28,502 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 16:28:28,502 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-25 16:28:28,502 INFO ]: Interpolant automaton has 8 states [2018-06-25 16:28:28,502 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 16:28:28,502 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-25 16:28:28,502 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-25 16:28:28,647 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 16:28:28,647 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 16:28:28,648 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 16:28:28,648 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-25 16:28:28,648 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 16:28:28,648 INFO ]: With dead ends: 11 [2018-06-25 16:28:28,648 INFO ]: Without dead ends: 11 [2018-06-25 16:28:28,649 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-25 16:28:28,649 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 16:28:28,650 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 16:28:28,650 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 16:28:28,650 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 16:28:28,650 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 16:28:28,650 INFO ]: Finished accepts. word is rejected. [2018-06-25 16:28:28,650 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 16:28:28,650 INFO ]: Interpolant automaton has 8 states. [2018-06-25 16:28:28,650 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 16:28:28,651 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 16:28:28,651 INFO ]: Found error trace [2018-06-25 16:28:28,651 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 16:28:28,651 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 16:28:28,651 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-25 16:28:28,651 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 16:28:28,651 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 16:28:28,652 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:28,652 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 16:28:28,652 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 16:28:28,768 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:29,246 WARN ]: Spent 187.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2018-06-25 16:28:29,266 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 16:28:29,266 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 16:28:29,266 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 [2018-06-25 16:28:29,274 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 16:28:29,475 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 16:28:29,475 INFO ]: Conjunction of SSA is unsat [2018-06-25 16:28:29,491 INFO ]: Computing forward predicates... [2018-06-25 16:28:29,777 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:28:30,790 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 16:28:31,431 WARN ]: expecting exponential blowup for input size 11 [2018-06-25 16:28:31,707 WARN ]: Simplifying disjunction of 24192 conjuctions. This might take some time... Received shutdown request... [2018-06-25 16:29:45,751 INFO ]: Timeout while computing interpolants [2018-06-25 16:29:45,965 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 16:29:45,965 WARN ]: Verification canceled [2018-06-25 16:29:45,971 WARN ]: Timeout [2018-06-25 16:29:45,971 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 04:29:45 BoogieIcfgContainer [2018-06-25 16:29:45,971 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 16:29:45,972 INFO ]: Toolchain (without parser) took 80378.65 ms. Allocated memory was 307.2 MB in the beginning and 979.4 MB in the end (delta: 672.1 MB). Free memory was 247.7 MB in the beginning and 537.5 MB in the end (delta: -289.8 MB). Peak memory consumption was 972.2 MB. Max. memory is 3.6 GB. [2018-06-25 16:29:45,973 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:29:45,973 INFO ]: ChcToBoogie took 76.35 ms. Allocated memory is still 307.2 MB. Free memory was 247.7 MB in the beginning and 243.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:29:45,988 INFO ]: Boogie Preprocessor took 46.99 ms. Allocated memory is still 307.2 MB. Free memory is still 243.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 16:29:45,988 INFO ]: RCFGBuilder took 405.50 ms. Allocated memory is still 307.2 MB. Free memory was 243.7 MB in the beginning and 209.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 3.6 GB. [2018-06-25 16:29:45,989 INFO ]: TraceAbstraction took 79834.44 ms. Allocated memory was 307.2 MB in the beginning and 979.4 MB in the end (delta: 672.1 MB). Free memory was 209.7 MB in the beginning and 537.5 MB in the end (delta: -327.8 MB). Peak memory consumption was 934.2 MB. Max. memory is 3.6 GB. [2018-06-25 16:29:45,991 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 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 76.35 ms. Allocated memory is still 307.2 MB. Free memory was 247.7 MB in the beginning and 243.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.99 ms. Allocated memory is still 307.2 MB. Free memory is still 243.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 405.50 ms. Allocated memory is still 307.2 MB. Free memory was 243.7 MB in the beginning and 209.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 79834.44 ms. Allocated memory was 307.2 MB in the beginning and 979.4 MB in the end (delta: 672.1 MB). Free memory was 209.7 MB in the beginning and 537.5 MB in the end (delta: -327.8 MB). Peak memory consumption was 934.2 MB. 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 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 24192 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 79.7s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 40 SDs, 0 SdLazy, 34 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1252 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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_1_e2_1102_e1_317.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_16-29-46-017.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e1_317.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_16-29-46-017.csv Completed graceful shutdown