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_e1_846_e7_397.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 08:57:38,733 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 08:57:38,735 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 08:57:38,751 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 08:57:38,751 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 08:57:38,752 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 08:57:38,753 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 08:57:38,755 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 08:57:38,756 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 08:57:38,758 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 08:57:38,758 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 08:57:38,759 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 08:57:38,759 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 08:57:38,760 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 08:57:38,763 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 08:57:38,764 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 08:57:38,766 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 08:57:38,775 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 08:57:38,776 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 08:57:38,777 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 08:57:38,778 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 08:57:38,782 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 08:57:38,783 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 08:57:38,783 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 08:57:38,785 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 08:57:38,786 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 08:57:38,786 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 08:57:38,787 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 08:57:38,788 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 08:57:38,788 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 08:57:38,788 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 08:57:38,793 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 08:57:38,794 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 08:57:38,794 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 08:57:38,795 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 08:57:38,795 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 08:57:38,819 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 08:57:38,819 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 08:57:38,820 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 08:57:38,820 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 08:57:38,824 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 08:57:38,825 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 08:57:38,825 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 08:57:38,825 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 08:57:38,825 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 08:57:38,825 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 08:57:38,826 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 08:57:38,826 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 08:57:38,826 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 08:57:38,826 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 08:57:38,826 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 08:57:38,826 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 08:57:38,827 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 08:57:38,829 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 08:57:38,829 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 08:57:38,871 INFO ]: Repository-Root is: /tmp [2018-06-22 08:57:38,887 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 08:57:38,894 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 08:57:38,895 INFO ]: Initializing SmtParser... [2018-06-22 08:57:38,895 INFO ]: SmtParser initialized [2018-06-22 08:57:38,896 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e1_846_e7_397.smt2 [2018-06-22 08:57:38,897 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 08:57:38,984 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e1_846_e7_397.smt2 unknown [2018-06-22 08:57:39,429 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_1_e1_846_e7_397.smt2 [2018-06-22 08:57:39,433 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 08:57:39,452 INFO ]: Walking toolchain with 4 elements. [2018-06-22 08:57:39,452 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 08:57:39,452 INFO ]: Initializing ChcToBoogie... [2018-06-22 08:57:39,453 INFO ]: ChcToBoogie initialized [2018-06-22 08:57:39,456 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:57:39" (1/1) ... [2018-06-22 08:57:39,562 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39 Unit [2018-06-22 08:57:39,562 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 08:57:39,564 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 08:57:39,564 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 08:57:39,564 INFO ]: Boogie Preprocessor initialized [2018-06-22 08:57:39,586 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39" (1/1) ... [2018-06-22 08:57:39,586 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39" (1/1) ... [2018-06-22 08:57:39,606 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39" (1/1) ... [2018-06-22 08:57:39,606 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39" (1/1) ... [2018-06-22 08:57:39,622 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39" (1/1) ... [2018-06-22 08:57:39,623 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39" (1/1) ... [2018-06-22 08:57:39,626 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39" (1/1) ... [2018-06-22 08:57:39,629 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 08:57:39,629 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 08:57:39,630 INFO ]: Initializing RCFGBuilder... [2018-06-22 08:57:39,630 INFO ]: RCFGBuilder initialized [2018-06-22 08:57:39,630 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39" (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 08:57:39,646 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 08:57:39,646 INFO ]: Found specification of procedure gotoProc [2018-06-22 08:57:39,646 INFO ]: Found implementation of procedure gotoProc [2018-06-22 08:57:39,646 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 08:57:39,646 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 08:57:39,646 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 08:57:40,102 INFO ]: Using library mode [2018-06-22 08:57:40,102 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:57:40 BoogieIcfgContainer [2018-06-22 08:57:40,102 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 08:57:40,104 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 08:57:40,104 INFO ]: Initializing TraceAbstraction... [2018-06-22 08:57:40,107 INFO ]: TraceAbstraction initialized [2018-06-22 08:57:40,107 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:57:39" (1/3) ... [2018-06-22 08:57:40,108 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f69455a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:57:40, skipping insertion in model container [2018-06-22 08:57:40,108 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:57:39" (2/3) ... [2018-06-22 08:57:40,108 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f69455a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:57:40, skipping insertion in model container [2018-06-22 08:57:40,108 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:57:40" (3/3) ... [2018-06-22 08:57:40,110 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 08:57:40,120 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 08:57:40,129 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 08:57:40,185 INFO ]: Using default assertion order modulation [2018-06-22 08:57:40,186 INFO ]: Interprodecural is true [2018-06-22 08:57:40,186 INFO ]: Hoare is false [2018-06-22 08:57:40,186 INFO ]: Compute interpolants for FPandBP [2018-06-22 08:57:40,186 INFO ]: Backedges is TWOTRACK [2018-06-22 08:57:40,186 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 08:57:40,186 INFO ]: Difference is false [2018-06-22 08:57:40,186 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 08:57:40,186 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 08:57:40,203 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 08:57:40,217 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 08:57:40,217 INFO ]: Found error trace [2018-06-22 08:57:40,220 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:57:40,220 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:57:40,226 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 08:57:40,228 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:57:40,229 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:57:40,277 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:57:40,277 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:57:40,277 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:57:40,390 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:57:40,554 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:57:40,555 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 08:57:40,555 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 08:57:40,557 INFO ]: Interpolant automaton has 3 states [2018-06-22 08:57:40,567 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 08:57:40,568 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 08:57:40,570 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 08:57:40,674 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:57:40,674 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 08:57:40,676 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 08:57:40,678 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 08:57:40,678 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:57:40,689 INFO ]: With dead ends: 9 [2018-06-22 08:57:40,689 INFO ]: Without dead ends: 9 [2018-06-22 08:57:40,691 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 08:57:40,710 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 08:57:40,758 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 08:57:40,760 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 08:57:40,761 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 08:57:40,762 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 08:57:40,762 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:57:40,762 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 08:57:40,762 INFO ]: Interpolant automaton has 3 states. [2018-06-22 08:57:40,762 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 08:57:40,763 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 08:57:40,763 INFO ]: Found error trace [2018-06-22 08:57:40,763 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:57:40,763 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:57:40,764 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 08:57:40,764 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:57:40,764 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:57:40,765 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:57:40,765 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:57:40,765 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:57:40,870 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:57:41,114 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:57:41,114 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:57:41,114 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 08:57:41,127 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:57:41,313 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:57:41,326 INFO ]: Computing forward predicates... [2018-06-22 08:57:41,444 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:57:41,469 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:57:41,469 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 08:57:41,469 INFO ]: Interpolant automaton has 5 states [2018-06-22 08:57:41,469 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 08:57:41,469 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 08:57:41,470 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 08:57:41,599 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:57:41,599 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 08:57:41,601 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 08:57:41,601 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 08:57:41,601 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:57:41,601 INFO ]: With dead ends: 10 [2018-06-22 08:57:41,601 INFO ]: Without dead ends: 10 [2018-06-22 08:57:41,602 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 08:57:41,602 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 08:57:41,603 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 08:57:41,603 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 08:57:41,604 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 08:57:41,604 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 08:57:41,604 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:57:41,604 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 08:57:41,604 INFO ]: Interpolant automaton has 5 states. [2018-06-22 08:57:41,604 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 08:57:41,604 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 08:57:41,604 INFO ]: Found error trace [2018-06-22 08:57:41,604 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:57:41,604 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:57:41,604 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 08:57:41,604 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:57:41,604 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:57:41,607 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:57:41,607 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 08:57:41,607 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:57:41,705 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:57:42,039 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:57:42,039 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:57:42,039 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) [2018-06-22 08:57:42,052 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 08:57:42,217 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 08:57:42,217 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:57:42,223 INFO ]: Computing forward predicates... [2018-06-22 08:57:42,735 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:57:42,759 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:57:42,759 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-22 08:57:42,759 INFO ]: Interpolant automaton has 7 states [2018-06-22 08:57:42,759 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 08:57:42,759 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 08:57:42,759 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-22 08:57:42,910 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:57:42,910 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 08:57:42,911 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 08:57:42,911 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-22 08:57:42,911 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:57:42,911 INFO ]: With dead ends: 11 [2018-06-22 08:57:42,911 INFO ]: Without dead ends: 11 [2018-06-22 08:57:42,912 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 08:57:42,912 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 08:57:42,912 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 08:57:42,912 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 08:57:42,913 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 08:57:42,913 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 08:57:42,913 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:57:42,913 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 08:57:42,913 INFO ]: Interpolant automaton has 7 states. [2018-06-22 08:57:42,913 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 08:57:42,913 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 08:57:42,913 INFO ]: Found error trace [2018-06-22 08:57:42,913 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 08:57:42,913 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 08:57:42,913 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 08:57:42,913 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 08:57:42,913 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 08:57:42,914 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:57:42,914 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 08:57:42,914 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 08:57:43,075 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:57:43,621 WARN ]: Spent 232.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2018-06-22 08:57:43,921 WARN ]: Spent 215.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2018-06-22 08:57:43,932 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:57:43,932 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 08:57:43,932 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 08:57:43,938 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 08:57:44,119 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 08:57:44,119 INFO ]: Conjunction of SSA is unsat [2018-06-22 08:57:44,128 INFO ]: Computing forward predicates... [2018-06-22 08:57:44,807 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 08:57:44,842 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 08:57:44,842 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 08:57:44,842 INFO ]: Interpolant automaton has 10 states [2018-06-22 08:57:44,843 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 08:57:44,843 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-22 08:57:44,843 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 08:57:45,084 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2018-06-22 08:57:45,093 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 08:57:45,093 INFO ]: Finished difference Result 6 states and 5 transitions. [2018-06-22 08:57:45,097 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 08:57:45,097 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 08:57:45,097 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 08:57:45,097 INFO ]: With dead ends: 6 [2018-06-22 08:57:45,097 INFO ]: Without dead ends: 0 [2018-06-22 08:57:45,098 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 08:57:45,098 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 08:57:45,098 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 08:57:45,098 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 08:57:45,098 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 08:57:45,098 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-22 08:57:45,098 INFO ]: Finished accepts. word is rejected. [2018-06-22 08:57:45,098 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 08:57:45,098 INFO ]: Interpolant automaton has 10 states. [2018-06-22 08:57:45,098 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 08:57:45,098 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 08:57:45,103 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:57:45 BoogieIcfgContainer [2018-06-22 08:57:45,103 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 08:57:45,104 INFO ]: Toolchain (without parser) took 5669.91 ms. Allocated memory was 304.1 MB in the beginning and 388.0 MB in the end (delta: 83.9 MB). Free memory was 242.5 MB in the beginning and 359.0 MB in the end (delta: -116.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 08:57:45,105 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 267.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 08:57:45,105 INFO ]: ChcToBoogie took 111.52 ms. Allocated memory is still 304.1 MB. Free memory was 242.5 MB in the beginning and 239.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 08:57:45,106 INFO ]: Boogie Preprocessor took 64.73 ms. Allocated memory is still 304.1 MB. Free memory was 239.5 MB in the beginning and 238.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 08:57:45,106 INFO ]: RCFGBuilder took 472.87 ms. Allocated memory is still 304.1 MB. Free memory was 238.5 MB in the beginning and 206.0 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 3.6 GB. [2018-06-22 08:57:45,106 INFO ]: TraceAbstraction took 4999.43 ms. Allocated memory was 304.1 MB in the beginning and 388.0 MB in the end (delta: 83.9 MB). Free memory was 205.0 MB in the beginning and 359.0 MB in the end (delta: -154.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 08:57:45,109 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 304.1 MB. Free memory is still 267.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 111.52 ms. Allocated memory is still 304.1 MB. Free memory was 242.5 MB in the beginning and 239.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 64.73 ms. Allocated memory is still 304.1 MB. Free memory was 239.5 MB in the beginning and 238.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 472.87 ms. Allocated memory is still 304.1 MB. Free memory was 238.5 MB in the beginning and 206.0 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4999.43 ms. Allocated memory was 304.1 MB in the beginning and 388.0 MB in the end (delta: 83.9 MB). Free memory was 205.0 MB in the beginning and 359.0 MB in the end (delta: -154.0 MB). There was no memory consumed. 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, 4.9s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 0 SDslu, 51 SDs, 0 SdLazy, 48 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.8s 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, 2.9s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1359 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2238 ConjunctsInSsa, 75 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_e1_846_e7_397.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_08-57-45-118.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_1_e1_846_e7_397.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_08-57-45-118.csv Received shutdown request...