java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:08:30,677 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:08:30,679 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:08:30,694 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:08:30,695 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:08:30,695 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:08:30,697 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:08:30,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:08:30,702 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:08:30,704 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:08:30,705 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:08:30,705 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:08:30,706 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:08:30,707 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:08:30,707 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:08:30,708 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:08:30,710 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:08:30,721 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:08:30,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:08:30,724 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:08:30,725 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:08:30,727 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:08:30,727 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:08:30,728 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:08:30,728 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:08:30,735 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:08:30,736 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:08:30,736 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:08:30,737 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:08:30,737 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:08:30,738 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:08:30,739 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:08:30,740 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:08:30,741 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:08:30,742 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:08:30,742 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:08:30,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:08:30,756 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:08:30,757 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:08:30,757 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:08:30,758 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:08:30,758 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:08:30,758 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:08:30,758 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:08:30,759 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:08:30,759 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:08:30,759 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:08:30,759 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:08:30,759 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:08:30,760 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:08:30,760 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:08:30,760 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:08:30,760 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:08:30,761 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:08:30,762 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:08:30,795 INFO ]: Repository-Root is: /tmp [2018-06-22 09:08:30,810 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:08:30,815 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:08:30,816 INFO ]: Initializing SmtParser... [2018-06-22 09:08:30,816 INFO ]: SmtParser initialized [2018-06-22 09:08:30,817 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704.smt2 [2018-06-22 09:08:30,818 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 09:08:30,906 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704.smt2 unknown [2018-06-22 09:08:31,350 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704.smt2 [2018-06-22 09:08:31,355 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:08:31,369 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:08:31,370 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:08:31,370 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:08:31,370 INFO ]: ChcToBoogie initialized [2018-06-22 09:08:31,373 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:08:31" (1/1) ... [2018-06-22 09:08:31,434 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31 Unit [2018-06-22 09:08:31,434 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:08:31,435 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:08:31,435 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:08:31,435 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:08:31,456 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31" (1/1) ... [2018-06-22 09:08:31,456 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31" (1/1) ... [2018-06-22 09:08:31,478 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31" (1/1) ... [2018-06-22 09:08:31,478 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31" (1/1) ... [2018-06-22 09:08:31,483 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31" (1/1) ... [2018-06-22 09:08:31,485 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31" (1/1) ... [2018-06-22 09:08:31,496 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31" (1/1) ... [2018-06-22 09:08:31,499 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:08:31,500 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:08:31,500 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:08:31,500 INFO ]: RCFGBuilder initialized [2018-06-22 09:08:31,501 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31" (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 [2018-06-22 09:08:31,518 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:08:31,518 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:08:31,518 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:08:31,518 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:08:31,518 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:08:31,519 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 09:08:32,043 INFO ]: Using library mode [2018-06-22 09:08:32,043 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:08:32 BoogieIcfgContainer [2018-06-22 09:08:32,044 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:08:32,045 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:08:32,045 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:08:32,053 INFO ]: TraceAbstraction initialized [2018-06-22 09:08:32,053 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:08:31" (1/3) ... [2018-06-22 09:08:32,054 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ef3b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:08:32, skipping insertion in model container [2018-06-22 09:08:32,054 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:08:31" (2/3) ... [2018-06-22 09:08:32,054 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ef3b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:08:32, skipping insertion in model container [2018-06-22 09:08:32,054 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:08:32" (3/3) ... [2018-06-22 09:08:32,056 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:08:32,065 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:08:32,073 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:08:32,128 INFO ]: Using default assertion order modulation [2018-06-22 09:08:32,128 INFO ]: Interprodecural is true [2018-06-22 09:08:32,128 INFO ]: Hoare is false [2018-06-22 09:08:32,128 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:08:32,128 INFO ]: Backedges is TWOTRACK [2018-06-22 09:08:32,128 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:08:32,129 INFO ]: Difference is false [2018-06-22 09:08:32,129 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:08:32,129 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:08:32,143 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:08:32,157 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:08:32,157 INFO ]: Found error trace [2018-06-22 09:08:32,159 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:32,159 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:32,165 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 09:08:32,166 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:32,167 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:32,201 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:32,201 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:08:32,201 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:32,322 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:32,469 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:32,472 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:08:32,472 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:08:32,474 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:08:32,489 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:08:32,490 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:08:32,494 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:08:32,583 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:08:32,583 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:08:32,584 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:08:32,585 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:08:32,585 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:08:32,591 INFO ]: With dead ends: 9 [2018-06-22 09:08:32,591 INFO ]: Without dead ends: 9 [2018-06-22 09:08:32,593 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 09:08:32,607 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:08:32,623 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:08:32,624 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:08:32,624 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:08:32,626 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:08:32,626 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:08:32,626 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:08:32,626 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:08:32,626 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:08:32,626 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:08:32,626 INFO ]: Found error trace [2018-06-22 09:08:32,626 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:32,626 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:32,627 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 09:08:32,627 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:32,627 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:32,632 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:32,632 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:08:32,632 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:32,769 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:32,977 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:32,977 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:08:32,977 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 09:08:32,983 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:08:33,128 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:33,138 INFO ]: Computing forward predicates... [2018-06-22 09:08:33,350 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:33,386 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:08:33,386 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 09:08:33,387 INFO ]: Interpolant automaton has 6 states [2018-06-22 09:08:33,387 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 09:08:33,387 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:08:33,387 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 09:08:33,569 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:08:33,569 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 09:08:33,570 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 09:08:33,570 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 09:08:33,570 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:08:33,570 INFO ]: With dead ends: 11 [2018-06-22 09:08:33,570 INFO ]: Without dead ends: 11 [2018-06-22 09:08:33,571 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 09:08:33,571 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 09:08:33,572 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 09:08:33,572 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 09:08:33,573 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 09:08:33,573 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 09:08:33,573 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:08:33,573 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 09:08:33,573 INFO ]: Interpolant automaton has 6 states. [2018-06-22 09:08:33,573 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 09:08:33,573 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 09:08:33,573 INFO ]: Found error trace [2018-06-22 09:08:33,573 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:33,573 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:33,573 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 09:08:33,573 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:33,573 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:33,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:33,577 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:08:33,577 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:33,771 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:34,789 WARN ]: Spent 696.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2018-06-22 09:08:35,167 WARN ]: Spent 364.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2018-06-22 09:08:35,210 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:35,210 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:08:35,210 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 09:08:35,217 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:08:35,445 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:08:35,445 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:35,453 INFO ]: Computing forward predicates... [2018-06-22 09:08:36,018 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:36,040 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:08:36,040 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 09:08:36,040 INFO ]: Interpolant automaton has 10 states [2018-06-22 09:08:36,040 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 09:08:36,041 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 09:08:36,041 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 09:08:36,241 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2018-06-22 09:08:36,328 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:08:36,328 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 09:08:36,329 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 09:08:36,329 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 09:08:36,329 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:08:36,329 INFO ]: With dead ends: 13 [2018-06-22 09:08:36,329 INFO ]: Without dead ends: 13 [2018-06-22 09:08:36,329 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 09:08:36,329 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 09:08:36,330 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 09:08:36,330 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 09:08:36,331 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 09:08:36,331 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 09:08:36,331 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:08:36,331 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 09:08:36,331 INFO ]: Interpolant automaton has 10 states. [2018-06-22 09:08:36,331 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 09:08:36,331 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 09:08:36,331 INFO ]: Found error trace [2018-06-22 09:08:36,331 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:36,331 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:36,331 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 09:08:36,331 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:36,331 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:36,332 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:36,333 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:08:36,333 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:36,609 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:37,774 WARN ]: Spent 429.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 32 [2018-06-22 09:08:38,802 WARN ]: Spent 908.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 44 [2018-06-22 09:08:39,827 WARN ]: Spent 914.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 48 [2018-06-22 09:08:40,987 WARN ]: Spent 1.05 s on a formula simplification. DAG size of input: 366 DAG size of output: 73 [2018-06-22 09:08:41,042 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:41,042 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:08:41,042 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 09:08:41,049 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 09:08:41,296 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 09:08:41,296 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:08:41,306 INFO ]: Computing forward predicates... [2018-06-22 09:08:41,594 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:08:41,615 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:08:41,615 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 09:08:41,615 INFO ]: Interpolant automaton has 14 states [2018-06-22 09:08:41,615 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 09:08:41,616 INFO ]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-06-22 09:08:41,616 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 09:08:41,937 WARN ]: Spent 272.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2018-06-22 09:08:42,221 WARN ]: Spent 261.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2018-06-22 09:08:42,445 WARN ]: Spent 199.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2018-06-22 09:08:42,681 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:08:42,681 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 09:08:42,681 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 09:08:42,681 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 09:08:42,681 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:08:42,681 INFO ]: With dead ends: 15 [2018-06-22 09:08:42,681 INFO ]: Without dead ends: 15 [2018-06-22 09:08:42,682 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2018-06-22 09:08:42,682 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 09:08:42,684 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 09:08:42,684 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 09:08:42,684 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 09:08:42,684 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 09:08:42,684 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:08:42,684 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 09:08:42,684 INFO ]: Interpolant automaton has 14 states. [2018-06-22 09:08:42,684 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 09:08:42,684 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 09:08:42,684 INFO ]: Found error trace [2018-06-22 09:08:42,684 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:08:42,684 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:08:42,685 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 4 times [2018-06-22 09:08:42,685 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:08:42,685 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:08:42,685 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:42,685 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 09:08:42,685 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:08:45,189 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-22 09:09:36,247 WARN ]: Removed 2 from assertion stack [2018-06-22 09:09:36,247 WARN ]: Verification canceled [2018-06-22 09:09:36,250 WARN ]: Timeout [2018-06-22 09:09:36,250 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:09:36 BoogieIcfgContainer [2018-06-22 09:09:36,250 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:09:36,251 INFO ]: Toolchain (without parser) took 64886.63 ms. Allocated memory was 309.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 250.7 MB in the beginning and 835.9 MB in the end (delta: -585.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 09:09:36,252 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:09:36,261 INFO ]: ChcToBoogie took 64.60 ms. Allocated memory is still 309.3 MB. Free memory was 250.7 MB in the beginning and 247.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:09:36,261 INFO ]: Boogie Preprocessor took 64.59 ms. Allocated memory is still 309.3 MB. Free memory was 247.7 MB in the beginning and 246.7 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-22 09:09:36,262 INFO ]: RCFGBuilder took 543.86 ms. Allocated memory is still 309.3 MB. Free memory was 246.7 MB in the beginning and 215.6 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 3.6 GB. [2018-06-22 09:09:36,262 INFO ]: TraceAbstraction took 64204.89 ms. Allocated memory was 309.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 214.6 MB in the beginning and 835.9 MB in the end (delta: -621.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 09:09:36,265 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.60 ms. Allocated memory is still 309.3 MB. Free memory was 250.7 MB in the beginning and 247.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 64.59 ms. Allocated memory is still 309.3 MB. Free memory was 247.7 MB in the beginning and 246.7 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 543.86 ms. Allocated memory is still 309.3 MB. Free memory was 246.7 MB in the beginning and 215.6 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64204.89 ms. Allocated memory was 309.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 214.6 MB in the beginning and 835.9 MB in the end (delta: -621.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 7, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 2877. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 64.1s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 110 SDs, 0 SdLazy, 74 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 6275 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2895 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_2_e2_704.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-09-36-275.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_2_e2_704.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-09-36-275.csv Completed graceful shutdown