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/mochi/sum4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:33:53,966 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:33:53,968 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:33:53,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:33:53,987 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:33:53,989 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:33:53,990 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:33:53,992 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:33:53,994 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:33:53,994 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:33:53,995 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:33:53,996 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:33:53,999 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:33:54,002 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:33:54,003 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:33:54,003 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:33:54,005 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:33:54,014 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:33:54,015 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:33:54,016 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:33:54,019 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:33:54,021 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:33:54,021 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:33:54,021 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:33:54,024 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:33:54,025 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:33:54,026 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:33:54,026 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:33:54,027 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:33:54,027 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:33:54,032 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:33:54,032 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:33:54,032 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:33:54,033 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:33:54,035 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:33:54,035 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:33:54,059 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:33:54,059 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:33:54,060 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:33:54,060 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:33:54,061 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:33:54,062 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:33:54,062 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:33:54,062 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:33:54,062 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:33:54,062 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:33:54,063 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:33:54,063 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:33:54,063 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:33:54,063 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:33:54,064 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:33:54,064 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:33:54,064 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:33:54,065 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:33:54,065 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:33:54,065 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:33:54,065 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:33:54,066 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:33:54,067 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:33:54,123 INFO ]: Repository-Root is: /tmp [2018-06-25 09:33:54,136 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:33:54,141 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:33:54,142 INFO ]: Initializing SmtParser... [2018-06-25 09:33:54,142 INFO ]: SmtParser initialized [2018-06-25 09:33:54,143 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum4.smt2 [2018-06-25 09:33:54,144 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 09:33:54,224 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum4.smt2 unknown [2018-06-25 09:33:54,339 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum4.smt2 [2018-06-25 09:33:54,343 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:33:54,351 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:33:54,352 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:33:54,352 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:33:54,352 INFO ]: ChcToBoogie initialized [2018-06-25 09:33:54,355 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:33:54" (1/1) ... [2018-06-25 09:33:54,410 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54 Unit [2018-06-25 09:33:54,410 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:33:54,411 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:33:54,411 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:33:54,411 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:33:54,434 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54" (1/1) ... [2018-06-25 09:33:54,434 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54" (1/1) ... [2018-06-25 09:33:54,440 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54" (1/1) ... [2018-06-25 09:33:54,441 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54" (1/1) ... [2018-06-25 09:33:54,443 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54" (1/1) ... [2018-06-25 09:33:54,446 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54" (1/1) ... [2018-06-25 09:33:54,447 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54" (1/1) ... [2018-06-25 09:33:54,448 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:33:54,449 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:33:54,449 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:33:54,449 INFO ]: RCFGBuilder initialized [2018-06-25 09:33:54,451 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54" (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 09:33:54,471 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:33:54,471 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:33:54,471 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:33:54,471 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:33:54,471 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:33:54,471 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 09:33:54,712 INFO ]: Using library mode [2018-06-25 09:33:54,712 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:33:54 BoogieIcfgContainer [2018-06-25 09:33:54,712 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:33:54,713 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:33:54,713 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:33:54,717 INFO ]: TraceAbstraction initialized [2018-06-25 09:33:54,717 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:33:54" (1/3) ... [2018-06-25 09:33:54,718 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e35dea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:33:54, skipping insertion in model container [2018-06-25 09:33:54,718 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:54" (2/3) ... [2018-06-25 09:33:54,718 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e35dea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:33:54, skipping insertion in model container [2018-06-25 09:33:54,718 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:33:54" (3/3) ... [2018-06-25 09:33:54,721 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:33:54,730 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:33:54,739 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:33:54,786 INFO ]: Using default assertion order modulation [2018-06-25 09:33:54,787 INFO ]: Interprodecural is true [2018-06-25 09:33:54,787 INFO ]: Hoare is false [2018-06-25 09:33:54,787 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:33:54,787 INFO ]: Backedges is TWOTRACK [2018-06-25 09:33:54,787 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:33:54,787 INFO ]: Difference is false [2018-06-25 09:33:54,787 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:33:54,787 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:33:54,798 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 09:33:54,808 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 09:33:54,809 INFO ]: Found error trace [2018-06-25 09:33:54,809 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 09:33:54,810 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:54,815 INFO ]: Analyzing trace with hash 1374390098, now seen corresponding path program 1 times [2018-06-25 09:33:54,816 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:54,817 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:54,850 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:54,850 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:54,850 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:54,878 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:54,906 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:54,908 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:33:54,908 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:33:54,910 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:33:54,921 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:33:54,921 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:33:54,924 INFO ]: Start difference. First operand 10 states. Second operand 2 states. [2018-06-25 09:33:54,940 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:54,940 INFO ]: Finished difference Result 8 states and 8 transitions. [2018-06-25 09:33:54,940 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:33:54,941 INFO ]: Start accepts. Automaton has 2 states. Word has length 6 [2018-06-25 09:33:54,941 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:54,953 INFO ]: With dead ends: 8 [2018-06-25 09:33:54,953 INFO ]: Without dead ends: 8 [2018-06-25 09:33:54,958 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 09:33:54,975 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 09:33:54,988 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-25 09:33:54,989 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 09:33:54,990 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-06-25 09:33:54,991 INFO ]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-06-25 09:33:54,991 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:54,991 INFO ]: Abstraction has 8 states and 8 transitions. [2018-06-25 09:33:54,991 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:33:54,991 INFO ]: Start isEmpty. Operand 8 states and 8 transitions. [2018-06-25 09:33:54,991 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:33:54,991 INFO ]: Found error trace [2018-06-25 09:33:54,992 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:54,992 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:54,992 INFO ]: Analyzing trace with hash -345521965, now seen corresponding path program 1 times [2018-06-25 09:33:54,992 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:54,992 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:54,993 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:54,993 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:54,993 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:55,007 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:55,084 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:55,084 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:33:55,084 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:33:55,085 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:33:55,086 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:33:55,086 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:33:55,086 INFO ]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2018-06-25 09:33:55,102 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:55,102 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 09:33:55,103 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:33:55,103 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 09:33:55,103 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:55,103 INFO ]: With dead ends: 9 [2018-06-25 09:33:55,103 INFO ]: Without dead ends: 9 [2018-06-25 09:33:55,104 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 09:33:55,104 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 09:33:55,106 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 09:33:55,106 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 09:33:55,106 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 09:33:55,106 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 09:33:55,106 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:55,106 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 09:33:55,106 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:33:55,106 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 09:33:55,107 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 09:33:55,107 INFO ]: Found error trace [2018-06-25 09:33:55,109 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:55,109 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:55,109 INFO ]: Analyzing trace with hash -2120417803, now seen corresponding path program 1 times [2018-06-25 09:33:55,109 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:55,109 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:55,110 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:55,110 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:55,110 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:55,136 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:55,302 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:55,303 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:33:55,303 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-25 09:33:55,363 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:33:55,405 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:55,412 INFO ]: Computing forward predicates... [2018-06-25 09:33:55,582 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:55,603 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:33:55,603 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 09:33:55,603 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:33:55,603 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:33:55,603 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:33:55,603 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-06-25 09:33:55,634 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:55,634 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 09:33:55,635 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 09:33:55,635 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 09:33:55,635 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:55,635 INFO ]: With dead ends: 10 [2018-06-25 09:33:55,635 INFO ]: Without dead ends: 10 [2018-06-25 09:33:55,635 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:33:55,635 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 09:33:55,637 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 09:33:55,637 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 09:33:55,637 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 09:33:55,637 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 09:33:55,637 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:55,637 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 09:33:55,637 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:33:55,637 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 09:33:55,637 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 09:33:55,637 INFO ]: Found error trace [2018-06-25 09:33:55,637 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:55,638 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:55,638 INFO ]: Analyzing trace with hash -1307613933, now seen corresponding path program 2 times [2018-06-25 09:33:55,638 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:55,638 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:55,639 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:55,639 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:55,639 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:55,653 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:55,776 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:55,776 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:33:55,776 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:33:55,784 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 09:33:55,826 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:33:55,826 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:55,829 INFO ]: Computing forward predicates... [2018-06-25 09:33:56,008 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:56,028 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:33:56,028 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-06-25 09:33:56,028 INFO ]: Interpolant automaton has 5 states [2018-06-25 09:33:56,029 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 09:33:56,029 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:33:56,029 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2018-06-25 09:33:56,220 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:56,220 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 09:33:56,221 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:33:56,221 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-25 09:33:56,221 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:56,221 INFO ]: With dead ends: 11 [2018-06-25 09:33:56,221 INFO ]: Without dead ends: 11 [2018-06-25 09:33:56,222 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:33:56,222 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 09:33:56,223 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 09:33:56,223 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 09:33:56,223 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 09:33:56,223 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 09:33:56,223 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:56,223 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 09:33:56,223 INFO ]: Interpolant automaton has 5 states. [2018-06-25 09:33:56,223 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 09:33:56,224 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 09:33:56,224 INFO ]: Found error trace [2018-06-25 09:33:56,224 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:56,224 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:56,224 INFO ]: Analyzing trace with hash -1880497739, now seen corresponding path program 3 times [2018-06-25 09:33:56,224 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:56,224 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:56,226 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:56,226 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 09:33:56,226 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:56,238 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:56,337 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:56,337 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:33:56,337 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:33:56,345 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 09:33:56,377 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 09:33:56,377 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:56,379 INFO ]: Computing forward predicates... [2018-06-25 09:33:56,456 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:56,475 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:33:56,475 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-25 09:33:56,475 INFO ]: Interpolant automaton has 6 states [2018-06-25 09:33:56,475 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 09:33:56,475 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-25 09:33:56,476 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-06-25 09:33:56,504 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:56,504 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-25 09:33:56,504 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 09:33:56,504 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-25 09:33:56,504 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:56,504 INFO ]: With dead ends: 7 [2018-06-25 09:33:56,504 INFO ]: Without dead ends: 0 [2018-06-25 09:33:56,505 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-25 09:33:56,505 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:33:56,505 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:33:56,505 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:33:56,505 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:33:56,505 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-25 09:33:56,505 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:56,505 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:33:56,505 INFO ]: Interpolant automaton has 6 states. [2018-06-25 09:33:56,505 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:33:56,505 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:33:56,509 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:33:56 BoogieIcfgContainer [2018-06-25 09:33:56,509 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:33:56,510 INFO ]: Toolchain (without parser) took 2166.43 ms. Allocated memory is still 309.9 MB. Free memory was 266.2 MB in the beginning and 199.9 MB in the end (delta: 66.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:56,511 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:33:56,512 INFO ]: ChcToBoogie took 58.84 ms. Allocated memory is still 309.9 MB. Free memory was 266.2 MB in the beginning and 264.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:56,512 INFO ]: Boogie Preprocessor took 37.26 ms. Allocated memory is still 309.9 MB. Free memory was 264.2 MB in the beginning and 262.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:56,513 INFO ]: RCFGBuilder took 263.53 ms. Allocated memory is still 309.9 MB. Free memory was 262.2 MB in the beginning and 256.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:56,513 INFO ]: TraceAbstraction took 1796.20 ms. Allocated memory is still 309.9 MB. Free memory was 256.2 MB in the beginning and 199.9 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:56,517 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 309.9 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 58.84 ms. Allocated memory is still 309.9 MB. Free memory was 266.2 MB in the beginning and 264.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.26 ms. Allocated memory is still 309.9 MB. Free memory was 264.2 MB in the beginning and 262.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 263.53 ms. Allocated memory is still 309.9 MB. Free memory was 262.2 MB in the beginning and 256.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1796.20 ms. Allocated memory is still 309.9 MB. Free memory was 256.2 MB in the beginning and 199.9 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 0 SDslu, 38 SDs, 0 SdLazy, 45 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 1337 SizeOfPredicates, 9 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-33-56-532.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-33-56-532.csv Received shutdown request...