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/hopv/lia/termination/binomial04.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:36:27,899 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:36:27,901 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:36:27,912 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:36:27,912 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:36:27,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:36:27,914 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:36:27,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:36:27,918 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:36:27,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:36:27,919 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:36:27,919 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:36:27,920 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:36:27,921 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:36:27,922 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:36:27,923 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:36:27,924 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:36:27,926 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:36:27,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:36:27,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:36:27,939 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:36:27,941 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:36:27,941 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:36:27,941 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:36:27,942 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:36:27,943 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:36:27,944 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:36:27,946 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:36:27,947 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:36:27,947 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:36:27,948 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:36:27,949 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:36:27,949 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:36:27,950 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:36:27,950 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:36:27,951 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:36:27,978 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:36:27,978 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:36:27,979 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:36:27,979 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:36:27,980 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:36:27,980 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:36:27,980 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:36:27,980 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:36:27,980 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:36:27,981 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:36:27,982 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:36:27,982 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:36:27,982 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:36:27,982 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:36:27,982 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:36:27,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:36:27,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:36:27,983 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:36:27,983 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:36:27,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:36:27,983 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:36:27,986 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:36:27,986 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:36:28,034 INFO ]: Repository-Root is: /tmp [2018-06-25 09:36:28,051 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:36:28,057 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:36:28,058 INFO ]: Initializing SmtParser... [2018-06-25 09:36:28,059 INFO ]: SmtParser initialized [2018-06-25 09:36:28,059 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/binomial04.smt2 [2018-06-25 09:36:28,060 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 09:36:28,145 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/binomial04.smt2 unknown [2018-06-25 09:36:28,711 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/binomial04.smt2 [2018-06-25 09:36:28,715 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:36:28,723 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:36:28,723 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:36:28,723 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:36:28,724 INFO ]: ChcToBoogie initialized [2018-06-25 09:36:28,726 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:36:28" (1/1) ... [2018-06-25 09:36:28,816 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28 Unit [2018-06-25 09:36:28,816 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:36:28,817 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:36:28,817 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:36:28,817 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:36:28,838 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28" (1/1) ... [2018-06-25 09:36:28,838 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28" (1/1) ... [2018-06-25 09:36:28,857 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28" (1/1) ... [2018-06-25 09:36:28,857 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28" (1/1) ... [2018-06-25 09:36:28,880 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28" (1/1) ... [2018-06-25 09:36:28,882 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28" (1/1) ... [2018-06-25 09:36:28,885 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28" (1/1) ... [2018-06-25 09:36:28,890 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:36:28,890 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:36:28,890 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:36:28,890 INFO ]: RCFGBuilder initialized [2018-06-25 09:36:28,895 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28" (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 09:36:28,911 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:36:28,912 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:36:28,912 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:36:28,912 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:36:28,912 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:36:28,912 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 09:36:30,019 INFO ]: Using library mode [2018-06-25 09:36:30,019 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:36:30 BoogieIcfgContainer [2018-06-25 09:36:30,020 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:36:30,021 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:36:30,021 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:36:30,024 INFO ]: TraceAbstraction initialized [2018-06-25 09:36:30,024 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:36:28" (1/3) ... [2018-06-25 09:36:30,025 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7998e2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:36:30, skipping insertion in model container [2018-06-25 09:36:30,025 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:36:28" (2/3) ... [2018-06-25 09:36:30,025 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7998e2bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:36:30, skipping insertion in model container [2018-06-25 09:36:30,025 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:36:30" (3/3) ... [2018-06-25 09:36:30,027 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:36:30,037 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:36:30,046 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:36:30,080 INFO ]: Using default assertion order modulation [2018-06-25 09:36:30,081 INFO ]: Interprodecural is true [2018-06-25 09:36:30,081 INFO ]: Hoare is false [2018-06-25 09:36:30,081 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:36:30,081 INFO ]: Backedges is TWOTRACK [2018-06-25 09:36:30,081 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:36:30,081 INFO ]: Difference is false [2018-06-25 09:36:30,081 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:36:30,081 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:36:30,097 INFO ]: Start isEmpty. Operand 49 states. [2018-06-25 09:36:30,110 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 09:36:30,112 INFO ]: Found error trace [2018-06-25 09:36:30,114 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:36:30,114 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:36:30,119 INFO ]: Analyzing trace with hash 2104273714, now seen corresponding path program 1 times [2018-06-25 09:36:30,122 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:36:30,122 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:36:30,158 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:30,158 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:36:30,158 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:30,209 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:36:30,355 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:36:30,358 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:36:30,358 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:36:30,360 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:36:30,375 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:36:30,375 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:36:30,378 INFO ]: Start difference. First operand 49 states. Second operand 4 states. [2018-06-25 09:36:31,399 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:36:31,400 INFO ]: Finished difference Result 91 states and 147 transitions. [2018-06-25 09:36:31,400 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:36:31,401 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 09:36:31,401 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:36:31,419 INFO ]: With dead ends: 91 [2018-06-25 09:36:31,419 INFO ]: Without dead ends: 87 [2018-06-25 09:36:31,421 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:36:31,440 INFO ]: Start minimizeSevpa. Operand 87 states. [2018-06-25 09:36:31,486 INFO ]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-06-25 09:36:31,487 INFO ]: Start removeUnreachable. Operand 87 states. [2018-06-25 09:36:31,491 INFO ]: Finished removeUnreachable. Reduced from 87 states to 87 states and 141 transitions. [2018-06-25 09:36:31,492 INFO ]: Start accepts. Automaton has 87 states and 141 transitions. Word has length 8 [2018-06-25 09:36:31,492 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:36:31,492 INFO ]: Abstraction has 87 states and 141 transitions. [2018-06-25 09:36:31,492 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:36:31,492 INFO ]: Start isEmpty. Operand 87 states and 141 transitions. [2018-06-25 09:36:31,494 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 09:36:31,494 INFO ]: Found error trace [2018-06-25 09:36:31,494 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:36:31,494 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:36:31,494 INFO ]: Analyzing trace with hash -663444400, now seen corresponding path program 1 times [2018-06-25 09:36:31,494 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:36:31,494 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:36:31,495 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:31,495 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:36:31,495 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:31,511 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:36:31,637 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:36:31,637 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:36:31,638 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:36:31,639 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:36:31,639 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:36:31,639 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:36:31,640 INFO ]: Start difference. First operand 87 states and 141 transitions. Second operand 4 states. [2018-06-25 09:36:32,005 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:36:32,005 INFO ]: Finished difference Result 111 states and 178 transitions. [2018-06-25 09:36:32,006 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:36:32,006 INFO ]: Start accepts. Automaton has 4 states. Word has length 14 [2018-06-25 09:36:32,006 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:36:32,012 INFO ]: With dead ends: 111 [2018-06-25 09:36:32,012 INFO ]: Without dead ends: 111 [2018-06-25 09:36:32,013 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:36:32,013 INFO ]: Start minimizeSevpa. Operand 111 states. [2018-06-25 09:36:32,029 INFO ]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-06-25 09:36:32,029 INFO ]: Start removeUnreachable. Operand 111 states. [2018-06-25 09:36:32,034 INFO ]: Finished removeUnreachable. Reduced from 111 states to 111 states and 178 transitions. [2018-06-25 09:36:32,034 INFO ]: Start accepts. Automaton has 111 states and 178 transitions. Word has length 14 [2018-06-25 09:36:32,035 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:36:32,035 INFO ]: Abstraction has 111 states and 178 transitions. [2018-06-25 09:36:32,035 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:36:32,035 INFO ]: Start isEmpty. Operand 111 states and 178 transitions. [2018-06-25 09:36:32,041 INFO ]: Finished isEmpty. Found accepting run of length 25 [2018-06-25 09:36:32,041 INFO ]: Found error trace [2018-06-25 09:36:32,041 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:36:32,041 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:36:32,042 INFO ]: Analyzing trace with hash -1485610781, now seen corresponding path program 1 times [2018-06-25 09:36:32,042 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:36:32,042 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:36:32,043 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:32,043 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:36:32,043 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:32,056 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:36:32,134 INFO ]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 09:36:32,134 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:36:32,134 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 [2018-06-25 09:36:32,144 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:36:32,196 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:36:32,205 INFO ]: Computing forward predicates... [2018-06-25 09:36:32,227 INFO ]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 09:36:32,260 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:36:32,260 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 09:36:32,261 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:36:32,261 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:36:32,261 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:36:32,261 INFO ]: Start difference. First operand 111 states and 178 transitions. Second operand 4 states. [2018-06-25 09:36:32,646 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:36:32,646 INFO ]: Finished difference Result 135 states and 215 transitions. [2018-06-25 09:36:32,647 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:36:32,647 INFO ]: Start accepts. Automaton has 4 states. Word has length 24 [2018-06-25 09:36:32,647 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:36:32,651 INFO ]: With dead ends: 135 [2018-06-25 09:36:32,651 INFO ]: Without dead ends: 135 [2018-06-25 09:36:32,651 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:36:32,652 INFO ]: Start minimizeSevpa. Operand 135 states. [2018-06-25 09:36:32,666 INFO ]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-06-25 09:36:32,666 INFO ]: Start removeUnreachable. Operand 135 states. [2018-06-25 09:36:32,670 INFO ]: Finished removeUnreachable. Reduced from 135 states to 135 states and 215 transitions. [2018-06-25 09:36:32,670 INFO ]: Start accepts. Automaton has 135 states and 215 transitions. Word has length 24 [2018-06-25 09:36:32,670 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:36:32,670 INFO ]: Abstraction has 135 states and 215 transitions. [2018-06-25 09:36:32,670 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:36:32,670 INFO ]: Start isEmpty. Operand 135 states and 215 transitions. [2018-06-25 09:36:32,675 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-25 09:36:32,675 INFO ]: Found error trace [2018-06-25 09:36:32,675 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:36:32,676 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:36:32,676 INFO ]: Analyzing trace with hash 832326047, now seen corresponding path program 1 times [2018-06-25 09:36:32,676 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:36:32,676 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:36:32,676 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:32,677 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:36:32,677 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:32,722 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:36:32,874 INFO ]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:36:32,874 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:36:32,874 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-25 09:36:32,874 INFO ]: Interpolant automaton has 6 states [2018-06-25 09:36:32,875 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 09:36:32,875 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-25 09:36:32,875 INFO ]: Start difference. First operand 135 states and 215 transitions. Second operand 6 states. [2018-06-25 09:36:33,309 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:36:33,309 INFO ]: Finished difference Result 240 states and 545 transitions. [2018-06-25 09:36:33,310 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 09:36:33,311 INFO ]: Start accepts. Automaton has 6 states. Word has length 26 [2018-06-25 09:36:33,311 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:36:33,330 INFO ]: With dead ends: 240 [2018-06-25 09:36:33,330 INFO ]: Without dead ends: 236 [2018-06-25 09:36:33,331 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-06-25 09:36:33,331 INFO ]: Start minimizeSevpa. Operand 236 states. [2018-06-25 09:36:33,405 INFO ]: Finished minimizeSevpa. Reduced states from 236 to 143. [2018-06-25 09:36:33,405 INFO ]: Start removeUnreachable. Operand 143 states. [2018-06-25 09:36:33,413 INFO ]: Finished removeUnreachable. Reduced from 143 states to 143 states and 235 transitions. [2018-06-25 09:36:33,413 INFO ]: Start accepts. Automaton has 143 states and 235 transitions. Word has length 26 [2018-06-25 09:36:33,414 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:36:33,414 INFO ]: Abstraction has 143 states and 235 transitions. [2018-06-25 09:36:33,414 INFO ]: Interpolant automaton has 6 states. [2018-06-25 09:36:33,414 INFO ]: Start isEmpty. Operand 143 states and 235 transitions. [2018-06-25 09:36:33,419 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-25 09:36:33,419 INFO ]: Found error trace [2018-06-25 09:36:33,419 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:36:33,419 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:36:33,420 INFO ]: Analyzing trace with hash -88740786, now seen corresponding path program 1 times [2018-06-25 09:36:33,420 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:36:33,420 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:36:33,420 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:33,420 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:36:33,420 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:36:33,507 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:36:33,977 INFO ]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 09:36:33,977 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:36:33,977 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-25 09:36:33,977 INFO ]: Interpolant automaton has 6 states [2018-06-25 09:36:33,977 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 09:36:33,977 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-25 09:36:33,977 INFO ]: Start difference. First operand 143 states and 235 transitions. Second operand 6 states. [2018-06-25 09:36:34,279 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:36:34,279 INFO ]: Finished difference Result 129 states and 206 transitions. [2018-06-25 09:36:34,279 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:36:34,279 INFO ]: Start accepts. Automaton has 6 states. Word has length 27 [2018-06-25 09:36:34,280 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:36:34,280 INFO ]: With dead ends: 129 [2018-06-25 09:36:34,280 INFO ]: Without dead ends: 0 [2018-06-25 09:36:34,280 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-25 09:36:34,280 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:36:34,280 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:36:34,280 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:36:34,280 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:36:34,280 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-06-25 09:36:34,280 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:36:34,280 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:36:34,280 INFO ]: Interpolant automaton has 6 states. [2018-06-25 09:36:34,280 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:36:34,280 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:36:34,284 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:36:34 BoogieIcfgContainer [2018-06-25 09:36:34,284 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:36:34,285 INFO ]: Toolchain (without parser) took 5569.21 ms. Allocated memory was 309.3 MB in the beginning and 349.7 MB in the end (delta: 40.4 MB). Free memory was 236.7 MB in the beginning and 239.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 37.6 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:34,288 INFO ]: SmtParser took 0.06 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 09:36:34,288 INFO ]: ChcToBoogie took 93.06 ms. Allocated memory is still 309.3 MB. Free memory was 235.7 MB in the beginning and 232.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:34,294 INFO ]: Boogie Preprocessor took 72.89 ms. Allocated memory is still 309.3 MB. Free memory was 232.7 MB in the beginning and 230.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:34,294 INFO ]: RCFGBuilder took 1129.29 ms. Allocated memory was 309.3 MB in the beginning and 324.0 MB in the end (delta: 14.7 MB). Free memory was 230.6 MB in the beginning and 287.1 MB in the end (delta: -56.5 MB). Peak memory consumption was 48.2 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:34,295 INFO ]: TraceAbstraction took 4262.95 ms. Allocated memory was 324.0 MB in the beginning and 349.7 MB in the end (delta: 25.7 MB). Free memory was 287.1 MB in the beginning and 239.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 73.3 MB. Max. memory is 3.6 GB. [2018-06-25 09:36:34,297 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 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 93.06 ms. Allocated memory is still 309.3 MB. Free memory was 235.7 MB in the beginning and 232.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 72.89 ms. Allocated memory is still 309.3 MB. Free memory was 232.7 MB in the beginning and 230.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1129.29 ms. Allocated memory was 309.3 MB in the beginning and 324.0 MB in the end (delta: 14.7 MB). Free memory was 230.6 MB in the beginning and 287.1 MB in the end (delta: -56.5 MB). Peak memory consumption was 48.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4262.95 ms. Allocated memory was 324.0 MB in the beginning and 349.7 MB in the end (delta: 25.7 MB). Free memory was 287.1 MB in the beginning and 239.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 73.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 49 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 356 SDtfs, 276 SDslu, 720 SDs, 0 SdLazy, 368 SolverSat, 188 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 93 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 5517 SizeOfPredicates, 1 NumberOfNonLiveVariables, 226 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 24/26 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/binomial04.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-36-34-316.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/binomial04.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-36-34-316.csv Received shutdown request...