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/fpice/inductive6-2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:21:20,959 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:21:20,961 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:21:20,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:21:20,974 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:21:20,975 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:21:20,976 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:21:20,980 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:21:20,981 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:21:20,983 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:21:20,984 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:21:20,984 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:21:20,985 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:21:20,986 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:21:20,987 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:21:20,991 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:21:20,992 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:21:21,005 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:21:21,006 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:21:21,007 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:21:21,008 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:21:21,010 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:21:21,010 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:21:21,010 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:21:21,011 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:21:21,012 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:21:21,017 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:21:21,017 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:21:21,018 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:21:21,019 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:21:21,019 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:21:21,020 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:21:21,020 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:21:21,026 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:21:21,027 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:21:21,027 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:21:21,052 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:21:21,052 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:21:21,052 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:21:21,052 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:21:21,053 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:21:21,053 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:21:21,054 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:21:21,055 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:21:21,055 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:21:21,055 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:21:21,055 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:21:21,055 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:21:21,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:21:21,056 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:21:21,056 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:21:21,056 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:21:21,056 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:21:21,057 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:21:21,057 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:21:21,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:21:21,057 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:21:21,059 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:21:21,060 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:21:21,106 INFO ]: Repository-Root is: /tmp [2018-06-25 09:21:21,119 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:21:21,122 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:21:21,124 INFO ]: Initializing SmtParser... [2018-06-25 09:21:21,124 INFO ]: SmtParser initialized [2018-06-25 09:21:21,125 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive6-2.smt2 [2018-06-25 09:21:21,126 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 09:21:21,198 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive6-2.smt2 unknown [2018-06-25 09:21:21,349 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive6-2.smt2 [2018-06-25 09:21:21,363 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:21:21,368 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:21:21,368 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:21:21,368 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:21:21,369 INFO ]: ChcToBoogie initialized [2018-06-25 09:21:21,377 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:21:21" (1/1) ... [2018-06-25 09:21:21,430 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21 Unit [2018-06-25 09:21:21,430 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:21:21,431 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:21:21,431 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:21:21,431 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:21:21,452 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21" (1/1) ... [2018-06-25 09:21:21,452 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21" (1/1) ... [2018-06-25 09:21:21,460 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21" (1/1) ... [2018-06-25 09:21:21,460 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21" (1/1) ... [2018-06-25 09:21:21,462 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21" (1/1) ... [2018-06-25 09:21:21,464 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21" (1/1) ... [2018-06-25 09:21:21,465 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21" (1/1) ... [2018-06-25 09:21:21,466 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:21:21,467 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:21:21,467 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:21:21,467 INFO ]: RCFGBuilder initialized [2018-06-25 09:21:21,467 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21" (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 09:21:21,478 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:21:21,479 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:21:21,479 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:21:21,479 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:21:21,479 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:21:21,479 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 09:21:21,624 INFO ]: Using library mode [2018-06-25 09:21:21,624 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:21:21 BoogieIcfgContainer [2018-06-25 09:21:21,624 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:21:21,625 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:21:21,625 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:21:21,629 INFO ]: TraceAbstraction initialized [2018-06-25 09:21:21,629 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:21:21" (1/3) ... [2018-06-25 09:21:21,630 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27023706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:21:21, skipping insertion in model container [2018-06-25 09:21:21,630 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:21" (2/3) ... [2018-06-25 09:21:21,630 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27023706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:21:21, skipping insertion in model container [2018-06-25 09:21:21,630 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:21:21" (3/3) ... [2018-06-25 09:21:21,632 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:21:21,641 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:21:21,650 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:21:21,703 INFO ]: Using default assertion order modulation [2018-06-25 09:21:21,704 INFO ]: Interprodecural is true [2018-06-25 09:21:21,704 INFO ]: Hoare is false [2018-06-25 09:21:21,704 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:21:21,704 INFO ]: Backedges is TWOTRACK [2018-06-25 09:21:21,704 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:21:21,704 INFO ]: Difference is false [2018-06-25 09:21:21,704 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:21:21,704 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:21:21,721 INFO ]: Start isEmpty. Operand 12 states. [2018-06-25 09:21:21,737 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 09:21:21,738 INFO ]: Found error trace [2018-06-25 09:21:21,739 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 09:21:21,739 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:21,744 INFO ]: Analyzing trace with hash 1460280530, now seen corresponding path program 1 times [2018-06-25 09:21:21,747 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:21,747 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:21,789 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:21,789 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:21,789 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:21,814 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:21,837 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:21,839 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:21,839 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:21:21,841 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:21:21,851 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:21:21,852 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:21:21,853 INFO ]: Start difference. First operand 12 states. Second operand 2 states. [2018-06-25 09:21:21,873 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:21,873 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 09:21:21,873 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:21:21,875 INFO ]: Start accepts. Automaton has 2 states. Word has length 6 [2018-06-25 09:21:21,876 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:21,881 INFO ]: With dead ends: 10 [2018-06-25 09:21:21,881 INFO ]: Without dead ends: 10 [2018-06-25 09:21:21,883 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:21:21,896 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 09:21:21,913 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 09:21:21,916 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 09:21:21,916 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 09:21:21,917 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-06-25 09:21:21,917 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:21,917 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 09:21:21,917 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:21:21,918 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 09:21:21,918 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:21:21,918 INFO ]: Found error trace [2018-06-25 09:21:21,918 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:21,918 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:21,918 INFO ]: Analyzing trace with hash -1977915657, now seen corresponding path program 1 times [2018-06-25 09:21:21,918 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:21,918 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:21,919 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:21,919 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:21,919 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:21,935 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:21,963 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:21,963 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:21,963 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:21:21,965 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:21:21,965 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:21:21,965 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:21:21,965 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-06-25 09:21:21,983 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:21,984 INFO ]: Finished difference Result 10 states and 9 transitions. [2018-06-25 09:21:21,990 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:21:21,990 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 09:21:21,990 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:21,991 INFO ]: With dead ends: 10 [2018-06-25 09:21:21,991 INFO ]: Without dead ends: 10 [2018-06-25 09:21:21,991 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 09:21:21,991 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 09:21:21,992 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 09:21:21,993 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 09:21:21,993 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2018-06-25 09:21:21,993 INFO ]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 7 [2018-06-25 09:21:21,993 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:21,993 INFO ]: Abstraction has 10 states and 9 transitions. [2018-06-25 09:21:21,993 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:21:21,993 INFO ]: Start isEmpty. Operand 10 states and 9 transitions. [2018-06-25 09:21:21,993 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 09:21:21,993 INFO ]: Found error trace [2018-06-25 09:21:21,993 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:21,994 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:21,994 INFO ]: Analyzing trace with hash 1833327095, now seen corresponding path program 1 times [2018-06-25 09:21:21,994 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:21,994 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:21,995 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:21,995 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:21,995 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:22,014 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:22,180 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:22,180 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:22,180 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-25 09:21:22,180 INFO ]: Interpolant automaton has 5 states [2018-06-25 09:21:22,180 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 09:21:22,180 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:21:22,181 INFO ]: Start difference. First operand 10 states and 9 transitions. Second operand 5 states. [2018-06-25 09:21:22,259 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:22,259 INFO ]: Finished difference Result 6 states and 5 transitions. [2018-06-25 09:21:22,259 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:21:22,259 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-25 09:21:22,259 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:22,259 INFO ]: With dead ends: 6 [2018-06-25 09:21:22,259 INFO ]: Without dead ends: 0 [2018-06-25 09:21:22,260 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-25 09:21:22,260 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:21:22,260 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:21:22,260 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:21:22,260 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:21:22,260 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-25 09:21:22,260 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:22,260 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:21:22,260 INFO ]: Interpolant automaton has 5 states. [2018-06-25 09:21:22,260 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:21:22,260 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:21:22,266 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:21:22 BoogieIcfgContainer [2018-06-25 09:21:22,266 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:21:22,267 INFO ]: Toolchain (without parser) took 903.57 ms. Allocated memory is still 305.1 MB. Free memory was 261.7 MB in the beginning and 229.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:22,269 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:21:22,269 INFO ]: ChcToBoogie took 62.09 ms. Allocated memory is still 305.1 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:22,270 INFO ]: Boogie Preprocessor took 35.27 ms. Allocated memory is still 305.1 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 09:21:22,271 INFO ]: RCFGBuilder took 157.83 ms. Allocated memory is still 305.1 MB. Free memory was 258.7 MB in the beginning and 251.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:22,271 INFO ]: TraceAbstraction took 640.72 ms. Allocated memory is still 305.1 MB. Free memory was 250.7 MB in the beginning and 229.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:22,277 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.09 ms. Allocated memory is still 305.1 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.27 ms. Allocated memory is still 305.1 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 157.83 ms. Allocated memory is still 305.1 MB. Free memory was 258.7 MB in the beginning and 251.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 640.72 ms. Allocated memory is still 305.1 MB. Free memory was 250.7 MB in the beginning and 229.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 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, 12 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 7 SDslu, 12 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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/inductive6-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-21-22-298.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive6-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-21-22-298.csv Received shutdown request...