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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_381_e8_477.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 17:25:51,705 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 17:25:51,708 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 17:25:51,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 17:25:51,722 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 17:25:51,723 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 17:25:51,726 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 17:25:51,729 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 17:25:51,730 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 17:25:51,732 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 17:25:51,733 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 17:25:51,733 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 17:25:51,734 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 17:25:51,735 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 17:25:51,739 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 17:25:51,740 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 17:25:51,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 17:25:51,755 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 17:25:51,756 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 17:25:51,757 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 17:25:51,758 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 17:25:51,760 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 17:25:51,760 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 17:25:51,761 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 17:25:51,761 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 17:25:51,762 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 17:25:51,766 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 17:25:51,766 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 17:25:51,767 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 17:25:51,768 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 17:25:51,768 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 17:25:51,773 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 17:25:51,774 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 17:25:51,774 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 17:25:51,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 17:25:51,775 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 17:25:51,797 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 17:25:51,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 17:25:51,798 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 17:25:51,798 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 17:25:51,799 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 17:25:51,799 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 17:25:51,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 17:25:51,800 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 17:25:51,801 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 17:25:51,801 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 17:25:51,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 17:25:51,801 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 17:25:51,802 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 17:25:51,802 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 17:25:51,802 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 17:25:51,802 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 17:25:51,802 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 17:25:51,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 17:25:51,803 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 17:25:51,804 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 17:25:51,804 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 17:25:51,852 INFO ]: Repository-Root is: /tmp [2018-06-22 17:25:51,866 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 17:25:51,871 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 17:25:51,873 INFO ]: Initializing SmtParser... [2018-06-22 17:25:51,873 INFO ]: SmtParser initialized [2018-06-22 17:25:51,874 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_381_e8_477.smt2 [2018-06-22 17:25:51,875 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 17:25:51,968 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_381_e8_477.smt2 unknown [2018-06-22 17:25:52,264 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_381_e8_477.smt2 [2018-06-22 17:25:52,268 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 17:25:52,282 INFO ]: Walking toolchain with 4 elements. [2018-06-22 17:25:52,283 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 17:25:52,283 INFO ]: Initializing ChcToBoogie... [2018-06-22 17:25:52,283 INFO ]: ChcToBoogie initialized [2018-06-22 17:25:52,286 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:25:52" (1/1) ... [2018-06-22 17:25:52,342 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52 Unit [2018-06-22 17:25:52,343 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 17:25:52,343 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 17:25:52,343 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 17:25:52,343 INFO ]: Boogie Preprocessor initialized [2018-06-22 17:25:52,364 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52" (1/1) ... [2018-06-22 17:25:52,364 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52" (1/1) ... [2018-06-22 17:25:52,371 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52" (1/1) ... [2018-06-22 17:25:52,371 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52" (1/1) ... [2018-06-22 17:25:52,374 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52" (1/1) ... [2018-06-22 17:25:52,376 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52" (1/1) ... [2018-06-22 17:25:52,377 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52" (1/1) ... [2018-06-22 17:25:52,381 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 17:25:52,381 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 17:25:52,381 INFO ]: Initializing RCFGBuilder... [2018-06-22 17:25:52,381 INFO ]: RCFGBuilder initialized [2018-06-22 17:25:52,382 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52" (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 17:25:52,392 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 17:25:52,392 INFO ]: Found specification of procedure False [2018-06-22 17:25:52,392 INFO ]: Found implementation of procedure False [2018-06-22 17:25:52,392 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 17:25:52,392 INFO ]: Found specification of procedure state [2018-06-22 17:25:52,392 INFO ]: Found implementation of procedure state [2018-06-22 17:25:52,392 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 17:25:52,392 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 17:25:52,393 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 17:25:52,667 INFO ]: Using library mode [2018-06-22 17:25:52,668 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:25:52 BoogieIcfgContainer [2018-06-22 17:25:52,668 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 17:25:52,669 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 17:25:52,669 INFO ]: Initializing TraceAbstraction... [2018-06-22 17:25:52,678 INFO ]: TraceAbstraction initialized [2018-06-22 17:25:52,678 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:25:52" (1/3) ... [2018-06-22 17:25:52,679 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f05f73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:25:52, skipping insertion in model container [2018-06-22 17:25:52,679 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:52" (2/3) ... [2018-06-22 17:25:52,679 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f05f73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:25:52, skipping insertion in model container [2018-06-22 17:25:52,679 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:25:52" (3/3) ... [2018-06-22 17:25:52,690 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 17:25:52,710 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 17:25:52,722 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 17:25:52,786 INFO ]: Using default assertion order modulation [2018-06-22 17:25:52,786 INFO ]: Interprodecural is true [2018-06-22 17:25:52,786 INFO ]: Hoare is false [2018-06-22 17:25:52,786 INFO ]: Compute interpolants for FPandBP [2018-06-22 17:25:52,786 INFO ]: Backedges is TWOTRACK [2018-06-22 17:25:52,786 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 17:25:52,787 INFO ]: Difference is false [2018-06-22 17:25:52,787 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 17:25:52,787 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 17:25:52,804 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 17:25:52,816 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 17:25:52,816 INFO ]: Found error trace [2018-06-22 17:25:52,816 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:25:52,817 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:25:52,820 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 17:25:52,822 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:25:52,822 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:25:52,856 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:52,856 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:25:52,856 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:52,906 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:53,032 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 17:25:53,033 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 17:25:53,033 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 17:25:53,035 INFO ]: Interpolant automaton has 4 states [2018-06-22 17:25:53,045 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 17:25:53,045 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:25:53,047 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 17:25:53,152 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:25:53,153 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 17:25:53,154 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 17:25:53,155 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 17:25:53,156 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:25:53,171 INFO ]: With dead ends: 13 [2018-06-22 17:25:53,171 INFO ]: Without dead ends: 13 [2018-06-22 17:25:53,173 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:25:53,188 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 17:25:53,209 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 17:25:53,210 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 17:25:53,211 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 17:25:53,212 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 17:25:53,212 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:25:53,212 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 17:25:53,212 INFO ]: Interpolant automaton has 4 states. [2018-06-22 17:25:53,212 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 17:25:53,214 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 17:25:53,214 INFO ]: Found error trace [2018-06-22 17:25:53,214 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:25:53,214 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:25:53,214 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 17:25:53,214 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:25:53,214 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:25:53,215 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:53,215 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:25:53,215 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:53,292 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:54,069 WARN ]: Spent 528.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2018-06-22 17:25:54,403 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:25:54,404 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:25:54,404 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 17:25:54,413 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:25:54,505 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:54,518 INFO ]: Computing forward predicates... [2018-06-22 17:25:54,695 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:54,715 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:54,727 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:54,745 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:54,754 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:54,760 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:57,640 WARN ]: Spent 488.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2018-06-22 17:25:57,817 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:25:57,839 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:25:57,840 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 17:25:57,840 INFO ]: Interpolant automaton has 9 states [2018-06-22 17:25:57,840 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 17:25:57,840 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 17:25:57,841 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 17:25:58,365 WARN ]: Spent 409.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2018-06-22 17:25:58,550 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:25:58,550 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 17:25:58,551 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:25:58,551 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 17:25:58,552 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:25:58,552 INFO ]: With dead ends: 15 [2018-06-22 17:25:58,552 INFO ]: Without dead ends: 15 [2018-06-22 17:25:58,553 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-06-22 17:25:58,553 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 17:25:58,556 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 17:25:58,556 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 17:25:58,556 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 17:25:58,556 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 17:25:58,556 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:25:58,556 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 17:25:58,556 INFO ]: Interpolant automaton has 9 states. [2018-06-22 17:25:58,556 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 17:25:58,557 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 17:25:58,557 INFO ]: Found error trace [2018-06-22 17:25:58,557 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:25:58,557 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:25:58,557 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 17:25:58,557 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:25:58,557 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:25:58,558 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:58,558 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:25:58,558 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:58,628 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:59,180 WARN ]: Spent 288.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2018-06-22 17:25:59,325 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:25:59,325 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:25:59,325 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 17:25:59,341 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 17:25:59,396 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 17:25:59,396 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:59,401 INFO ]: Computing forward predicates... [2018-06-22 17:25:59,481 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:59,490 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:59,499 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:59,505 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:59,510 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:25:59,516 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 17:26:00,959 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2018-06-22 17:26:01,198 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:26:01,224 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:26:01,224 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 17:26:01,224 INFO ]: Interpolant automaton has 13 states [2018-06-22 17:26:01,224 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 17:26:01,225 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-22 17:26:01,225 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 17:26:01,609 WARN ]: Spent 344.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 122 [2018-06-22 17:26:02,219 WARN ]: Spent 402.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 110 [2018-06-22 17:26:02,492 WARN ]: Spent 244.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 101 [2018-06-22 17:26:02,514 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:26:02,514 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 17:26:02,516 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 17:26:02,516 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 17:26:02,516 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:26:02,516 INFO ]: With dead ends: 11 [2018-06-22 17:26:02,516 INFO ]: Without dead ends: 0 [2018-06-22 17:26:02,517 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-06-22 17:26:02,517 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 17:26:02,517 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 17:26:02,517 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 17:26:02,517 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 17:26:02,517 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 17:26:02,517 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:26:02,517 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 17:26:02,517 INFO ]: Interpolant automaton has 13 states. [2018-06-22 17:26:02,517 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 17:26:02,517 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 17:26:02,522 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:26:02 BoogieIcfgContainer [2018-06-22 17:26:02,522 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 17:26:02,523 INFO ]: Toolchain (without parser) took 10254.04 ms. Allocated memory was 308.3 MB in the beginning and 483.4 MB in the end (delta: 175.1 MB). Free memory was 260.7 MB in the beginning and 411.8 MB in the end (delta: -151.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:26:02,524 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 17:26:02,524 INFO ]: ChcToBoogie took 60.31 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:26:02,525 INFO ]: Boogie Preprocessor took 37.47 ms. Allocated memory is still 308.3 MB. Free memory was 258.7 MB in the beginning and 256.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:26:02,525 INFO ]: RCFGBuilder took 286.78 ms. Allocated memory is still 308.3 MB. Free memory was 256.7 MB in the beginning and 244.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:26:02,526 INFO ]: TraceAbstraction took 9852.92 ms. Allocated memory was 308.3 MB in the beginning and 483.4 MB in the end (delta: 175.1 MB). Free memory was 244.7 MB in the beginning and 411.8 MB in the end (delta: -167.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. [2018-06-22 17:26:02,529 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 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.31 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.47 ms. Allocated memory is still 308.3 MB. Free memory was 258.7 MB in the beginning and 256.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 286.78 ms. Allocated memory is still 308.3 MB. Free memory was 256.7 MB in the beginning and 244.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 9852.92 ms. Allocated memory was 308.3 MB in the beginning and 483.4 MB in the end (delta: 175.1 MB). Free memory was 244.7 MB in the beginning and 411.8 MB in the end (delta: -167.1 MB). Peak memory consumption was 8.1 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 9.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 10 SDslu, 97 SDs, 0 SdLazy, 88 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 7.0s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 14096 SizeOfPredicates, 79 NumberOfNonLiveVariables, 393 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 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_e8_381_e8_477.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_17-26-02-540.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ex3_e8_381_e8_477.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_17-26-02-540.csv Received shutdown request...