java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e7_590.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 15:03:26,630 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 15:03:26,633 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 15:03:26,646 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 15:03:26,646 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 15:03:26,647 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 15:03:26,648 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 15:03:26,655 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 15:03:26,657 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 15:03:26,658 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 15:03:26,660 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 15:03:26,661 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 15:03:26,661 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 15:03:26,662 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 15:03:26,663 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 15:03:26,666 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 15:03:26,667 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 15:03:26,676 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 15:03:26,678 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 15:03:26,679 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 15:03:26,679 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 15:03:26,681 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 15:03:26,681 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 15:03:26,686 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 15:03:26,687 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 15:03:26,688 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 15:03:26,689 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 15:03:26,689 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 15:03:26,690 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 15:03:26,690 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 15:03:26,693 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 15:03:26,693 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 15:03:26,693 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 15:03:26,694 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 15:03:26,695 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 15:03:26,695 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 15:03:26,717 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 15:03:26,717 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 15:03:26,717 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 15:03:26,717 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 15:03:26,718 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 15:03:26,718 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 15:03:26,718 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 15:03:26,722 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 15:03:26,722 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 15:03:26,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 15:03:26,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 15:03:26,722 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 15:03:26,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 15:03:26,723 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 15:03:26,723 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 15:03:26,723 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 15:03:26,723 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 15:03:26,723 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 15:03:26,724 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 15:03:26,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 15:03:26,724 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 15:03:26,726 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 15:03:26,726 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 15:03:26,776 INFO ]: Repository-Root is: /tmp [2018-06-25 15:03:26,792 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 15:03:26,797 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 15:03:26,798 INFO ]: Initializing SmtParser... [2018-06-25 15:03:26,798 INFO ]: SmtParser initialized [2018-06-25 15:03:26,799 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e7_590.smt2 [2018-06-25 15:03:26,800 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-25 15:03:26,887 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e7_590.smt2 unknown [2018-06-25 15:03:27,172 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e7_590.smt2 [2018-06-25 15:03:27,178 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 15:03:27,185 INFO ]: Walking toolchain with 4 elements. [2018-06-25 15:03:27,185 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 15:03:27,185 INFO ]: Initializing ChcToBoogie... [2018-06-25 15:03:27,185 INFO ]: ChcToBoogie initialized [2018-06-25 15:03:27,188 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:03:27" (1/1) ... [2018-06-25 15:03:27,252 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27 Unit [2018-06-25 15:03:27,252 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 15:03:27,253 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 15:03:27,253 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 15:03:27,253 INFO ]: Boogie Preprocessor initialized [2018-06-25 15:03:27,275 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27" (1/1) ... [2018-06-25 15:03:27,275 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27" (1/1) ... [2018-06-25 15:03:27,283 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27" (1/1) ... [2018-06-25 15:03:27,283 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27" (1/1) ... [2018-06-25 15:03:27,287 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27" (1/1) ... [2018-06-25 15:03:27,288 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27" (1/1) ... [2018-06-25 15:03:27,298 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27" (1/1) ... [2018-06-25 15:03:27,300 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 15:03:27,301 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 15:03:27,301 INFO ]: Initializing RCFGBuilder... [2018-06-25 15:03:27,301 INFO ]: RCFGBuilder initialized [2018-06-25 15:03:27,302 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27" (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) [2018-06-25 15:03:27,318 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 15:03:27,318 INFO ]: Found specification of procedure gotoProc [2018-06-25 15:03:27,318 INFO ]: Found implementation of procedure gotoProc [2018-06-25 15:03:27,318 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 15:03:27,318 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 15:03:27,318 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 [2018-06-25 15:03:27,604 INFO ]: Using library mode [2018-06-25 15:03:27,604 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:03:27 BoogieIcfgContainer [2018-06-25 15:03:27,604 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 15:03:27,605 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 15:03:27,606 INFO ]: Initializing TraceAbstraction... [2018-06-25 15:03:27,609 INFO ]: TraceAbstraction initialized [2018-06-25 15:03:27,609 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 03:03:27" (1/3) ... [2018-06-25 15:03:27,610 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662f5453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 03:03:27, skipping insertion in model container [2018-06-25 15:03:27,610 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 03:03:27" (2/3) ... [2018-06-25 15:03:27,610 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662f5453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 03:03:27, skipping insertion in model container [2018-06-25 15:03:27,610 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 03:03:27" (3/3) ... [2018-06-25 15:03:27,612 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 15:03:27,621 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 15:03:27,631 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 15:03:27,688 INFO ]: Using default assertion order modulation [2018-06-25 15:03:27,689 INFO ]: Interprodecural is true [2018-06-25 15:03:27,689 INFO ]: Hoare is false [2018-06-25 15:03:27,689 INFO ]: Compute interpolants for FPandBP [2018-06-25 15:03:27,689 INFO ]: Backedges is TWOTRACK [2018-06-25 15:03:27,689 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 15:03:27,689 INFO ]: Difference is false [2018-06-25 15:03:27,689 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 15:03:27,689 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 15:03:27,709 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 15:03:27,727 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 15:03:27,727 INFO ]: Found error trace [2018-06-25 15:03:27,728 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:03:27,728 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:03:27,738 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 15:03:27,741 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:03:27,742 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:03:27,782 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:03:27,782 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:03:27,782 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:03:27,851 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:03:27,941 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:03:27,942 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 15:03:27,942 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 15:03:27,944 INFO ]: Interpolant automaton has 3 states [2018-06-25 15:03:27,954 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 15:03:27,954 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 15:03:27,956 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 15:03:28,037 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:03:28,037 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 15:03:28,038 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 15:03:28,039 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 15:03:28,039 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:03:28,059 INFO ]: With dead ends: 9 [2018-06-25 15:03:28,059 INFO ]: Without dead ends: 9 [2018-06-25 15:03:28,061 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 15:03:28,077 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 15:03:28,106 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 15:03:28,107 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 15:03:28,108 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 15:03:28,109 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 15:03:28,109 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:03:28,109 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 15:03:28,109 INFO ]: Interpolant automaton has 3 states. [2018-06-25 15:03:28,109 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 15:03:28,109 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 15:03:28,109 INFO ]: Found error trace [2018-06-25 15:03:28,109 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:03:28,109 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:03:28,110 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 15:03:28,110 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:03:28,110 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:03:28,111 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:03:28,111 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:03:28,111 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:03:28,153 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:03:28,313 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:03:28,313 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:03:28,313 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) [2018-06-25 15:03:28,327 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 15:03:28,417 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:03:28,428 INFO ]: Computing forward predicates... [2018-06-25 15:03:28,612 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:03:28,645 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:03:28,645 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 15:03:28,646 INFO ]: Interpolant automaton has 5 states [2018-06-25 15:03:28,646 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 15:03:28,646 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 15:03:28,646 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 15:03:28,762 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:03:28,762 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 15:03:28,764 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 15:03:28,764 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 15:03:28,764 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:03:28,764 INFO ]: With dead ends: 10 [2018-06-25 15:03:28,764 INFO ]: Without dead ends: 10 [2018-06-25 15:03:28,765 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 15:03:28,765 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 15:03:28,766 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 15:03:28,766 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 15:03:28,767 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 15:03:28,767 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 15:03:28,767 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:03:28,767 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 15:03:28,767 INFO ]: Interpolant automaton has 5 states. [2018-06-25 15:03:28,767 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 15:03:28,767 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 15:03:28,767 INFO ]: Found error trace [2018-06-25 15:03:28,767 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 15:03:28,767 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 15:03:28,768 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 15:03:28,768 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 15:03:28,768 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 15:03:28,768 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:03:28,768 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 15:03:28,768 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 15:03:28,833 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:03:29,150 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:03:29,150 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 15:03:29,150 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 15:03:29,156 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 15:03:29,274 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 15:03:29,274 INFO ]: Conjunction of SSA is unsat [2018-06-25 15:03:29,278 INFO ]: Computing forward predicates... [2018-06-25 15:03:29,884 WARN ]: Spent 302.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-06-25 15:03:31,123 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 21 [2018-06-25 15:03:31,131 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 15:03:31,153 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 15:03:31,153 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-25 15:03:31,153 INFO ]: Interpolant automaton has 8 states [2018-06-25 15:03:31,153 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 15:03:31,154 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-25 15:03:31,154 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-25 15:03:31,325 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-06-25 15:03:31,331 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 15:03:31,331 INFO ]: Finished difference Result 6 states and 6 transitions. [2018-06-25 15:03:31,331 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 15:03:31,331 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-25 15:03:31,331 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 15:03:31,331 INFO ]: With dead ends: 6 [2018-06-25 15:03:31,331 INFO ]: Without dead ends: 0 [2018-06-25 15:03:31,331 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-25 15:03:31,332 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 15:03:31,332 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 15:03:31,332 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 15:03:31,332 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 15:03:31,332 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-25 15:03:31,332 INFO ]: Finished accepts. word is rejected. [2018-06-25 15:03:31,332 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 15:03:31,332 INFO ]: Interpolant automaton has 8 states. [2018-06-25 15:03:31,332 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 15:03:31,332 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 15:03:31,337 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 03:03:31 BoogieIcfgContainer [2018-06-25 15:03:31,337 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 15:03:31,338 INFO ]: Toolchain (without parser) took 4159.34 ms. Allocated memory was 309.3 MB in the beginning and 328.7 MB in the end (delta: 19.4 MB). Free memory was 261.7 MB in the beginning and 176.5 MB in the end (delta: 85.1 MB). Peak memory consumption was 104.5 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:31,338 INFO ]: SmtParser took 0.08 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. [2018-06-25 15:03:31,339 INFO ]: ChcToBoogie took 67.51 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 258.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:31,339 INFO ]: Boogie Preprocessor took 47.29 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 257.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:31,340 INFO ]: RCFGBuilder took 303.58 ms. Allocated memory is still 309.3 MB. Free memory was 257.6 MB in the beginning and 243.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:31,340 INFO ]: TraceAbstraction took 3731.28 ms. Allocated memory was 309.3 MB in the beginning and 328.7 MB in the end (delta: 19.4 MB). Free memory was 243.6 MB in the beginning and 176.5 MB in the end (delta: 67.1 MB). Peak memory consumption was 86.5 MB. Max. memory is 3.6 GB. [2018-06-25 15:03:31,344 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 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 67.51 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 258.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.29 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 257.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 303.58 ms. Allocated memory is still 309.3 MB. Free memory was 257.6 MB in the beginning and 243.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3731.28 ms. Allocated memory was 309.3 MB in the beginning and 328.7 MB in the end (delta: 19.4 MB). Free memory was 243.6 MB in the beginning and 176.5 MB in the end (delta: 67.1 MB). Peak memory consumption was 86.5 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, 3.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 25 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 919 SizeOfPredicates, 12 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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/ex3_e7_590.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_15-03-31-354.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ex3_e7_590.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_15-03-31-354.csv Received shutdown request...