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_1_e2_1102_e3_961.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 08:59:16,931 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 08:59:16,933 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 08:59:16,944 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 08:59:16,945 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 08:59:16,946 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 08:59:16,947 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 08:59:16,951 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 08:59:16,953 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 08:59:16,954 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 08:59:16,958 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 08:59:16,958 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 08:59:16,959 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 08:59:16,960 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 08:59:16,961 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 08:59:16,964 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 08:59:16,966 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 08:59:16,968 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 08:59:16,972 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 08:59:16,973 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 08:59:16,985 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 08:59:16,988 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 08:59:16,988 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 08:59:16,988 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 08:59:16,989 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 08:59:16,990 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 08:59:16,990 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 08:59:16,991 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 08:59:16,992 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 08:59:16,992 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 08:59:16,997 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 08:59:16,998 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 08:59:16,998 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 08:59:16,999 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 08:59:17,000 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 08:59:17,000 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 08:59:17,026 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 08:59:17,026 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 08:59:17,026 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 08:59:17,027 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 08:59:17,028 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 08:59:17,029 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 08:59:17,029 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 08:59:17,029 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 08:59:17,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 08:59:17,029 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 08:59:17,030 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 08:59:17,030 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 08:59:17,030 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 08:59:17,030 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 08:59:17,030 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 08:59:17,030 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 08:59:17,031 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 08:59:17,033 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 08:59:17,033 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 08:59:17,085 INFO ]: Repository-Root is: /tmp [2018-06-22 08:59:17,101 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 08:59:17,107 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 08:59:17,109 INFO ]: Initializing SmtParser... [2018-06-22 08:59:17,110 INFO ]: SmtParser initialized [2018-06-22 08:59:17,110 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e3_961.smt2 [2018-06-22 08:59:17,111 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 08:59:17,204 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e3_961.smt2 unknown [2018-06-22 08:59:17,724 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e2_1102_e3_961.smt2 [2018-06-22 08:59:17,738 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 08:59:17,745 INFO ]: Walking toolchain with 4 elements. [2018-06-22 08:59:17,745 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 08:59:17,745 INFO ]: Initializing ChcToBoogie... [2018-06-22 08:59:17,745 INFO ]: ChcToBoogie initialized [2018-06-22 08:59:17,748 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:59:17" (1/1) ... [2018-06-22 08:59:17,817 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17 Unit [2018-06-22 08:59:17,817 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 08:59:17,819 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 08:59:17,819 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 08:59:17,819 INFO ]: Boogie Preprocessor initialized [2018-06-22 08:59:17,833 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17" (1/1) ... [2018-06-22 08:59:17,834 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17" (1/1) ... [2018-06-22 08:59:17,843 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17" (1/1) ... [2018-06-22 08:59:17,843 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17" (1/1) ... [2018-06-22 08:59:17,855 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17" (1/1) ... [2018-06-22 08:59:17,856 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17" (1/1) ... [2018-06-22 08:59:17,859 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17" (1/1) ... [2018-06-22 08:59:17,863 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 08:59:17,863 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 08:59:17,863 INFO ]: Initializing RCFGBuilder... [2018-06-22 08:59:17,863 INFO ]: RCFGBuilder initialized [2018-06-22 08:59:17,864 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17" (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 08:59:17,875 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 08:59:17,875 INFO ]: Found specification of procedure gotoProc [2018-06-22 08:59:17,875 INFO ]: Found implementation of procedure gotoProc [2018-06-22 08:59:17,875 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 08:59:17,875 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 08:59:17,875 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 08:59:18,307 INFO ]: Using library mode [2018-06-22 08:59:18,308 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:59:18 BoogieIcfgContainer [2018-06-22 08:59:18,308 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 08:59:18,312 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 08:59:18,312 INFO ]: Initializing TraceAbstraction... [2018-06-22 08:59:18,316 INFO ]: TraceAbstraction initialized [2018-06-22 08:59:18,317 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:59:17" (1/3) ... [2018-06-22 08:59:18,318 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab83f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:59:18, skipping insertion in model container [2018-06-22 08:59:18,318 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:59:17" (2/3) ... [2018-06-22 08:59:18,318 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab83f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:59:18, skipping insertion in model container [2018-06-22 08:59:18,318 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:59:18" (3/3) ... [2018-06-22 08:59:18,320 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 08:59:18,330 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 08:59:18,340 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 08:59:18,399 INFO ]: Using default assertion order modulation [2018-06-22 08:59:18,400 INFO ]: Interprodecural is true [2018-06-22 08:59:18,400 INFO ]: Hoare is false [2018-06-22 08:59:18,400 INFO ]: Compute interpolants for FPandBP [2018-06-22 08:59:18,400 INFO ]: Backedges is TWOTRACK [2018-06-22 08:59:18,400 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 08:59:18,400 INFO ]: Difference is false [2018-06-22 08:59:18,400 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 08:59:18,400 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 08:59:18,422 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 08:59:18,436 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 08:59:18,438 INFO ]: Found error trace [2018-06-22 08:59:18,439 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:59:18,439 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:59:18,445 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 08:59:18,447 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:59:18,448 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:59:18,497 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:59:18,497 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:59:18,497 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:59:18,601 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:59:18,744 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:59:18,748 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 08:59:18,748 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 08:59:18,750 INFO ]: Interpolant automaton has 3 states [2018-06-22 08:59:18,761 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 08:59:18,761 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:59:18,764 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 08:59:18,839 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:59:18,839 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 08:59:18,840 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 08:59:18,841 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 08:59:18,841 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:59:18,848 INFO ]: With dead ends: 9 [2018-06-22 08:59:18,848 INFO ]: Without dead ends: 9 [2018-06-22 08:59:18,850 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 08:59:18,863 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 08:59:18,882 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 08:59:18,883 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 08:59:18,884 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 08:59:18,886 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 08:59:18,886 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:59:18,886 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 08:59:18,886 INFO ]: Interpolant automaton has 3 states. [2018-06-22 08:59:18,886 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 08:59:18,886 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 08:59:18,886 INFO ]: Found error trace [2018-06-22 08:59:18,886 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:59:18,886 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:59:18,887 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 08:59:18,887 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:59:18,887 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:59:18,887 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:59:18,887 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:59:18,887 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:59:19,028 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:59:19,256 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:59:19,256 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:59:19,256 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:59:19,277 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:59:19,441 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:59:19,452 INFO ]: Computing forward predicates... [2018-06-22 08:59:19,622 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:59:19,659 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:59:19,659 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 08:59:19,660 INFO ]: Interpolant automaton has 5 states [2018-06-22 08:59:19,660 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 08:59:19,660 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:59:19,660 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 08:59:19,761 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:59:19,761 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 08:59:19,762 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 08:59:19,762 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 08:59:19,762 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:59:19,763 INFO ]: With dead ends: 10 [2018-06-22 08:59:19,763 INFO ]: Without dead ends: 10 [2018-06-22 08:59:19,764 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:59:19,764 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 08:59:19,765 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 08:59:19,765 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 08:59:19,765 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 08:59:19,765 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 08:59:19,765 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:59:19,765 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 08:59:19,765 INFO ]: Interpolant automaton has 5 states. [2018-06-22 08:59:19,765 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 08:59:19,766 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 08:59:19,766 INFO ]: Found error trace [2018-06-22 08:59:19,766 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:59:19,767 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:59:19,767 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 08:59:19,767 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:59:19,767 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:59:19,768 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:59:19,768 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:59:19,768 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:59:19,874 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:59:20,134 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:59:20,134 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:59:20,134 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 08:59:20,143 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 08:59:20,321 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 08:59:20,321 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:59:20,328 INFO ]: Computing forward predicates... [2018-06-22 08:59:20,538 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:59:20,573 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:59:20,573 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 08:59:20,574 INFO ]: Interpolant automaton has 8 states [2018-06-22 08:59:20,574 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 08:59:20,574 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 08:59:20,574 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 08:59:20,705 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:59:20,705 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 08:59:20,705 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 08:59:20,705 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 08:59:20,705 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:59:20,706 INFO ]: With dead ends: 11 [2018-06-22 08:59:20,706 INFO ]: Without dead ends: 11 [2018-06-22 08:59:20,706 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-06-22 08:59:20,706 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 08:59:20,707 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 08:59:20,707 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 08:59:20,708 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 08:59:20,708 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 08:59:20,708 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:59:20,708 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 08:59:20,708 INFO ]: Interpolant automaton has 8 states. [2018-06-22 08:59:20,708 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 08:59:20,708 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 08:59:20,708 INFO ]: Found error trace [2018-06-22 08:59:20,708 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:59:20,708 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:59:20,709 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 08:59:20,709 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:59:20,709 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:59:20,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:59:20,709 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 08:59:20,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:59:20,878 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:59:21,506 WARN ]: Spent 251.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2018-06-22 08:59:21,710 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2018-06-22 08:59:21,712 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:59:21,712 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:59:21,712 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 08:59:21,718 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 08:59:21,895 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 08:59:21,895 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:59:21,904 INFO ]: Computing forward predicates... [2018-06-22 08:59:22,381 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:59:22,550 WARN ]: Simplifying disjunction of 12096 conjuctions. This might take some time... [2018-06-22 08:59:45,549 INFO ]: Simplified to disjunction of 12096 conjuctions. [2018-06-22 08:59:45,713 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:59:45,773 WARN ]: Simplifying disjunction of 6048 conjuctions. This might take some time... [2018-06-22 08:59:52,382 INFO ]: Simplified to disjunction of 6048 conjuctions. [2018-06-22 08:59:52,406 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 08:59:52,453 WARN ]: Simplifying disjunction of 6048 conjuctions. This might take some time... [2018-06-22 08:59:55,783 INFO ]: Simplified to disjunction of 6048 conjuctions. [2018-06-22 08:59:55,800 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 08:59:55,868 WARN ]: Simplifying disjunction of 12096 conjuctions. This might take some time... [2018-06-22 09:00:12,732 INFO ]: Simplified to disjunction of 12096 conjuctions. [2018-06-22 09:00:13,335 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 09:00:13,346 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 09:00:13,448 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:00:13,472 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:00:13,472 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 09:00:13,472 INFO ]: Interpolant automaton has 9 states [2018-06-22 09:00:13,472 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 09:00:13,472 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-22 09:00:13,473 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 09:00:13,705 WARN ]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-06-22 09:00:13,803 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:00:13,803 INFO ]: Finished difference Result 8 states and 8 transitions. [2018-06-22 09:00:13,804 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 09:00:13,804 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 09:00:13,804 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:00:13,804 INFO ]: With dead ends: 8 [2018-06-22 09:00:13,804 INFO ]: Without dead ends: 0 [2018-06-22 09:00:13,805 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-06-22 09:00:13,805 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 09:00:13,805 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 09:00:13,805 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 09:00:13,805 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 09:00:13,805 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-22 09:00:13,805 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:00:13,805 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 09:00:13,805 INFO ]: Interpolant automaton has 9 states. [2018-06-22 09:00:13,805 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 09:00:13,805 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 09:00:13,811 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:00:13 BoogieIcfgContainer [2018-06-22 09:00:13,811 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:00:13,812 INFO ]: Toolchain (without parser) took 56073.47 ms. Allocated memory was 308.8 MB in the beginning and 1.3 GB in the end (delta: 969.9 MB). Free memory was 250.2 MB in the beginning and 282.0 MB in the end (delta: -31.8 MB). Peak memory consumption was 938.1 MB. Max. memory is 3.6 GB. [2018-06-22 09:00:13,814 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:00:13,814 INFO ]: ChcToBoogie took 72.48 ms. Allocated memory is still 308.8 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 09:00:13,815 INFO ]: Boogie Preprocessor took 44.08 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 245.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 09:00:13,815 INFO ]: RCFGBuilder took 444.70 ms. Allocated memory is still 308.8 MB. Free memory was 245.2 MB in the beginning and 212.9 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 3.6 GB. [2018-06-22 09:00:13,816 INFO ]: TraceAbstraction took 55499.77 ms. Allocated memory was 308.8 MB in the beginning and 1.3 GB in the end (delta: 969.9 MB). Free memory was 211.9 MB in the beginning and 282.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 899.8 MB. Max. memory is 3.6 GB. [2018-06-22 09:00:13,826 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 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 72.48 ms. Allocated memory is still 308.8 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 44.08 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 245.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 444.70 ms. Allocated memory is still 308.8 MB. Free memory was 245.2 MB in the beginning and 212.9 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 55499.77 ms. Allocated memory was 308.8 MB in the beginning and 1.3 GB in the end (delta: 969.9 MB). Free memory was 211.9 MB in the beginning and 282.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 899.8 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 2 procedures, 10 locations, 1 error locations. SAFE Result, 55.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 0 SDslu, 54 SDs, 0 SdLazy, 56 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 53.4s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1449 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2238 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20 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_e3_961.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-00-13-839.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e2_1102_e3_961.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-00-13-839.csv Received shutdown request...