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_e7_1255_e7_12.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:01:37,571 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:01:37,573 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:01:37,589 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:01:37,590 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:01:37,591 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:01:37,592 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:01:37,594 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:01:37,596 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:01:37,598 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:01:37,598 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:01:37,599 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:01:37,599 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:01:37,600 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:01:37,604 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:01:37,605 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:01:37,607 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:01:37,615 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:01:37,617 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:01:37,618 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:01:37,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:01:37,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:01:37,623 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:01:37,623 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:01:37,624 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:01:37,628 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:01:37,629 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:01:37,629 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:01:37,630 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:01:37,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:01:37,634 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:01:37,635 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:01:37,635 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:01:37,636 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:01:37,636 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:01:37,637 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:01:37,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:01:37,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:01:37,657 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:01:37,657 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:01:37,658 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:01:37,658 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:01:37,659 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:01:37,659 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:01:37,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:01:37,659 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:01:37,659 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:01:37,659 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:01:37,660 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:01:37,660 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:01:37,660 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:01:37,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:01:37,660 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:01:37,663 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:01:37,663 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:01:37,705 INFO ]: Repository-Root is: /tmp [2018-06-22 09:01:37,721 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:01:37,725 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:01:37,727 INFO ]: Initializing SmtParser... [2018-06-22 09:01:37,727 INFO ]: SmtParser initialized [2018-06-22 09:01:37,728 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e7_12.smt2 [2018-06-22 09:01:37,729 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 09:01:37,817 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e7_12.smt2 unknown [2018-06-22 09:01:38,275 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e7_1255_e7_12.smt2 [2018-06-22 09:01:38,279 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:01:38,296 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:01:38,296 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:01:38,296 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:01:38,297 INFO ]: ChcToBoogie initialized [2018-06-22 09:01:38,300 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:01:38" (1/1) ... [2018-06-22 09:01:38,413 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38 Unit [2018-06-22 09:01:38,413 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:01:38,414 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:01:38,414 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:01:38,414 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:01:38,434 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38" (1/1) ... [2018-06-22 09:01:38,434 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38" (1/1) ... [2018-06-22 09:01:38,444 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38" (1/1) ... [2018-06-22 09:01:38,452 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38" (1/1) ... [2018-06-22 09:01:38,466 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38" (1/1) ... [2018-06-22 09:01:38,467 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38" (1/1) ... [2018-06-22 09:01:38,469 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38" (1/1) ... [2018-06-22 09:01:38,473 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:01:38,473 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:01:38,473 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:01:38,473 INFO ]: RCFGBuilder initialized [2018-06-22 09:01:38,474 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38" (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 09:01:38,497 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:01:38,497 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:01:38,497 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:01:38,497 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:01:38,497 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:01:38,497 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 09:01:38,962 INFO ]: Using library mode [2018-06-22 09:01:38,962 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:01:38 BoogieIcfgContainer [2018-06-22 09:01:38,963 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:01:38,966 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:01:38,966 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:01:38,971 INFO ]: TraceAbstraction initialized [2018-06-22 09:01:38,971 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:01:38" (1/3) ... [2018-06-22 09:01:38,972 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f15e94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:01:38, skipping insertion in model container [2018-06-22 09:01:38,972 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:01:38" (2/3) ... [2018-06-22 09:01:38,972 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f15e94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:01:38, skipping insertion in model container [2018-06-22 09:01:38,972 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:01:38" (3/3) ... [2018-06-22 09:01:38,976 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:01:38,985 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:01:38,994 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:01:39,045 INFO ]: Using default assertion order modulation [2018-06-22 09:01:39,046 INFO ]: Interprodecural is true [2018-06-22 09:01:39,046 INFO ]: Hoare is false [2018-06-22 09:01:39,046 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:01:39,046 INFO ]: Backedges is TWOTRACK [2018-06-22 09:01:39,046 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:01:39,046 INFO ]: Difference is false [2018-06-22 09:01:39,046 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:01:39,046 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:01:39,063 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:01:39,075 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:01:39,075 INFO ]: Found error trace [2018-06-22 09:01:39,078 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:01:39,078 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:01:39,083 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:01:39,086 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:01:39,086 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:01:39,134 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:39,134 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:01:39,135 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:39,251 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:39,398 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:39,400 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:01:39,400 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:01:39,401 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:01:39,413 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:01:39,413 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:01:39,416 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:01:39,504 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:01:39,504 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:01:39,505 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:01:39,506 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:01:39,506 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:01:39,514 INFO ]: With dead ends: 9 [2018-06-22 09:01:39,514 INFO ]: Without dead ends: 9 [2018-06-22 09:01:39,520 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 09:01:39,538 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:01:39,566 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:01:39,567 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:01:39,568 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:01:39,575 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:01:39,575 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:01:39,575 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:01:39,575 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:01:39,576 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:01:39,576 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:01:39,576 INFO ]: Found error trace [2018-06-22 09:01:39,576 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:01:39,576 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:01:39,576 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:01:39,576 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:01:39,576 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:01:39,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:39,577 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:01:39,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:39,681 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:39,871 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:39,871 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:01:39,871 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 09:01:39,879 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:01:40,062 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:40,074 INFO ]: Computing forward predicates... [2018-06-22 09:01:40,203 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:40,229 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:01:40,229 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 09:01:40,229 INFO ]: Interpolant automaton has 5 states [2018-06-22 09:01:40,230 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 09:01:40,230 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:01:40,230 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 09:01:40,355 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:01:40,355 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 09:01:40,357 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 09:01:40,357 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 09:01:40,357 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:01:40,358 INFO ]: With dead ends: 10 [2018-06-22 09:01:40,358 INFO ]: Without dead ends: 10 [2018-06-22 09:01:40,359 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 [2018-06-22 09:01:40,359 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 09:01:40,360 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 09:01:40,360 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 09:01:40,360 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 09:01:40,360 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 09:01:40,360 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:01:40,360 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 09:01:40,360 INFO ]: Interpolant automaton has 5 states. [2018-06-22 09:01:40,360 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 09:01:40,361 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 09:01:40,361 INFO ]: Found error trace [2018-06-22 09:01:40,361 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:01:40,361 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:01:40,361 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 09:01:40,361 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:01:40,361 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:01:40,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:40,363 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:01:40,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:40,476 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:40,883 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:40,883 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:01:40,883 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 09:01:40,893 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:01:41,071 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:01:41,071 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:41,077 INFO ]: Computing forward predicates... [2018-06-22 09:01:41,372 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:41,395 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:01:41,395 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-22 09:01:41,395 INFO ]: Interpolant automaton has 7 states [2018-06-22 09:01:41,395 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 09:01:41,395 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 09:01:41,396 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-22 09:01:41,528 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:01:41,528 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:01:41,529 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:01:41,529 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-22 09:01:41,529 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:01:41,529 INFO ]: With dead ends: 11 [2018-06-22 09:01:41,529 INFO ]: Without dead ends: 11 [2018-06-22 09:01:41,529 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 09:01:41,529 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:01:41,530 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:01:41,530 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:01:41,531 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:01:41,531 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 09:01:41,531 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:01:41,531 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:01:41,531 INFO ]: Interpolant automaton has 7 states. [2018-06-22 09:01:41,531 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:01:41,531 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:01:41,531 INFO ]: Found error trace [2018-06-22 09:01:41,531 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:01:41,531 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:01:41,531 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 09:01:41,531 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:01:41,532 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:01:41,532 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:41,532 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:01:41,532 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:01:41,641 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:42,517 WARN ]: Spent 542.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2018-06-22 09:01:42,676 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2018-06-22 09:01:42,687 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:01:42,724 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:01:42,724 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 09:01:42,733 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:01:42,942 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 09:01:42,942 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:01:42,950 INFO ]: Computing forward predicates... [2018-06-22 09:01:43,673 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 09:01:44,015 WARN ]: Simplifying disjunction of 20736 conjuctions. This might take some time... [2018-06-22 09:02:36,428 INFO ]: Simplified to disjunction of 20736 conjuctions. [2018-06-22 09:02:37,661 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 16 [2018-06-22 09:02:37,676 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:02:37,716 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:02:37,716 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 09:02:37,716 INFO ]: Interpolant automaton has 10 states [2018-06-22 09:02:37,716 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 09:02:37,717 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:02:37,717 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 09:02:37,939 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:02:37,939 INFO ]: Finished difference Result 6 states and 5 transitions. [2018-06-22 09:02:37,939 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:02:37,939 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 09:02:37,939 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:02:37,939 INFO ]: With dead ends: 6 [2018-06-22 09:02:37,939 INFO ]: Without dead ends: 0 [2018-06-22 09:02:37,940 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 09:02:37,940 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 09:02:37,940 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 09:02:37,940 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 09:02:37,940 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 09:02:37,940 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-22 09:02:37,940 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:02:37,940 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 09:02:37,940 INFO ]: Interpolant automaton has 10 states. [2018-06-22 09:02:37,940 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 09:02:37,940 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 09:02:37,946 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:02:37 BoogieIcfgContainer [2018-06-22 09:02:37,946 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:02:37,946 INFO ]: Toolchain (without parser) took 59666.87 ms. Allocated memory was 308.3 MB in the beginning and 1.2 GB in the end (delta: 859.3 MB). Free memory was 248.7 MB in the beginning and 400.3 MB in the end (delta: -151.6 MB). Peak memory consumption was 707.7 MB. Max. memory is 3.6 GB. [2018-06-22 09:02:37,949 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:02:37,950 INFO ]: ChcToBoogie took 117.09 ms. Allocated memory is still 308.3 MB. Free memory was 248.7 MB in the beginning and 245.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:02:37,950 INFO ]: Boogie Preprocessor took 58.76 ms. Allocated memory is still 308.3 MB. Free memory was 245.7 MB in the beginning and 244.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 09:02:37,951 INFO ]: RCFGBuilder took 489.48 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 212.3 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 3.6 GB. [2018-06-22 09:02:37,951 INFO ]: TraceAbstraction took 58980.04 ms. Allocated memory was 308.3 MB in the beginning and 1.2 GB in the end (delta: 859.3 MB). Free memory was 211.3 MB in the beginning and 400.3 MB in the end (delta: -189.0 MB). Peak memory consumption was 670.3 MB. Max. memory is 3.6 GB. [2018-06-22 09:02:37,955 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 308.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 117.09 ms. Allocated memory is still 308.3 MB. Free memory was 248.7 MB in the beginning and 245.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 58.76 ms. Allocated memory is still 308.3 MB. Free memory was 245.7 MB in the beginning and 244.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 489.48 ms. Allocated memory is still 308.3 MB. Free memory was 244.7 MB in the beginning and 212.3 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58980.04 ms. Allocated memory was 308.3 MB in the beginning and 1.2 GB in the end (delta: 859.3 MB). Free memory was 211.3 MB in the beginning and 400.3 MB in the end (delta: -189.0 MB). Peak memory consumption was 670.3 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, 58.9s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 0 SDslu, 51 SDs, 0 SdLazy, 48 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.1s 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, 0.7s SatisfiabilityAnalysisTime, 56.9s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1530 SizeOfPredicates, 17 NumberOfNonLiveVariables, 2238 ConjunctsInSsa, 78 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_e7_1255_e7_12.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-02-37-966.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e7_1255_e7_12.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-02-37-966.csv Received shutdown request...