java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:35:08,741 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:35:08,744 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:35:08,756 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:35:08,756 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:35:08,757 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:35:08,758 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:35:08,760 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:35:08,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:35:08,763 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:35:08,764 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:35:08,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:35:08,765 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:35:08,766 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:35:08,767 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:35:08,772 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:35:08,776 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:35:08,778 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:35:08,780 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:35:08,781 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:35:08,788 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:35:08,791 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:35:08,791 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:35:08,791 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:35:08,792 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:35:08,793 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:35:08,794 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:35:08,794 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:35:08,795 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:35:08,796 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:35:08,796 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:35:08,800 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:35:08,801 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:35:08,802 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:35:08,802 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:35:08,803 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:35:08,830 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:35:08,830 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:35:08,830 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:35:08,830 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:35:08,831 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:35:08,832 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:35:08,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:35:08,832 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:35:08,832 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:35:08,832 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:35:08,833 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:35:08,833 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:35:08,833 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:35:08,833 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:35:08,833 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:35:08,834 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:35:08,834 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:35:08,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:35:08,834 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:35:08,835 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:35:08,840 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:35:08,889 INFO ]: Repository-Root is: /tmp [2018-06-22 11:35:08,908 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:35:08,915 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:35:08,916 INFO ]: Initializing SmtParser... [2018-06-22 11:35:08,916 INFO ]: SmtParser initialized [2018-06-22 11:35:08,918 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 [2018-06-22 11:35:08,919 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 11:35:09,019 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 unknown [2018-06-22 11:35:09,308 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91_98.smt2 [2018-06-22 11:35:09,313 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:35:09,320 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:35:09,320 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:35:09,320 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:35:09,321 INFO ]: ChcToBoogie initialized [2018-06-22 11:35:09,325 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:09" (1/1) ... [2018-06-22 11:35:09,409 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09 Unit [2018-06-22 11:35:09,410 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:35:09,410 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:35:09,410 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:35:09,410 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:35:09,452 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09" (1/1) ... [2018-06-22 11:35:09,453 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09" (1/1) ... [2018-06-22 11:35:09,460 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09" (1/1) ... [2018-06-22 11:35:09,461 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09" (1/1) ... [2018-06-22 11:35:09,464 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09" (1/1) ... [2018-06-22 11:35:09,465 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09" (1/1) ... [2018-06-22 11:35:09,466 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09" (1/1) ... [2018-06-22 11:35:09,467 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:35:09,468 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:35:09,468 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:35:09,468 INFO ]: RCFGBuilder initialized [2018-06-22 11:35:09,469 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:35:09,482 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:35:09,482 INFO ]: Found specification of procedure False [2018-06-22 11:35:09,482 INFO ]: Found implementation of procedure False [2018-06-22 11:35:09,482 INFO ]: Specification and implementation of procedure mDLRunknownCLN2 given in one single declaration [2018-06-22 11:35:09,482 INFO ]: Found specification of procedure mDLRunknownCLN2 [2018-06-22 11:35:09,482 INFO ]: Found implementation of procedure mDLRunknownCLN2 [2018-06-22 11:35:09,482 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:35:09,482 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:35:09,482 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 11:35:09,603 INFO ]: Using library mode [2018-06-22 11:35:09,625 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:09 BoogieIcfgContainer [2018-06-22 11:35:09,626 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:35:09,627 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:35:09,627 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:35:09,638 INFO ]: TraceAbstraction initialized [2018-06-22 11:35:09,638 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:09" (1/3) ... [2018-06-22 11:35:09,639 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86e8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:35:09, skipping insertion in model container [2018-06-22 11:35:09,639 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:09" (2/3) ... [2018-06-22 11:35:09,639 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86e8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:35:09, skipping insertion in model container [2018-06-22 11:35:09,639 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:09" (3/3) ... [2018-06-22 11:35:09,641 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:35:09,659 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:35:09,675 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:35:09,725 INFO ]: Using default assertion order modulation [2018-06-22 11:35:09,726 INFO ]: Interprodecural is true [2018-06-22 11:35:09,726 INFO ]: Hoare is false [2018-06-22 11:35:09,726 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:35:09,726 INFO ]: Backedges is TWOTRACK [2018-06-22 11:35:09,726 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:35:09,726 INFO ]: Difference is false [2018-06-22 11:35:09,726 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:35:09,726 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:35:09,739 INFO ]: Start isEmpty. Operand 14 states. [2018-06-22 11:35:09,748 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:35:09,748 INFO ]: Found error trace [2018-06-22 11:35:09,749 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:35:09,749 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:09,753 INFO ]: Analyzing trace with hash 55609196, now seen corresponding path program 1 times [2018-06-22 11:35:09,754 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:09,754 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:09,788 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:09,788 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:09,788 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:09,802 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:09,825 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:09,828 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:09,828 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:35:09,831 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:35:09,841 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:35:09,841 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:35:09,843 INFO ]: Start difference. First operand 14 states. Second operand 2 states. [2018-06-22 11:35:09,864 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:09,864 INFO ]: Finished difference Result 12 states and 14 transitions. [2018-06-22 11:35:09,864 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:35:09,866 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:35:09,866 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:09,875 INFO ]: With dead ends: 12 [2018-06-22 11:35:09,875 INFO ]: Without dead ends: 12 [2018-06-22 11:35:09,877 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 [2018-06-22 11:35:09,890 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 11:35:09,910 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 11:35:09,911 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 11:35:09,912 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-06-22 11:35:09,913 INFO ]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2018-06-22 11:35:09,913 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:09,913 INFO ]: Abstraction has 12 states and 14 transitions. [2018-06-22 11:35:09,913 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:35:09,913 INFO ]: Start isEmpty. Operand 12 states and 14 transitions. [2018-06-22 11:35:09,914 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:35:09,914 INFO ]: Found error trace [2018-06-22 11:35:09,914 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:09,915 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:09,915 INFO ]: Analyzing trace with hash -853408345, now seen corresponding path program 1 times [2018-06-22 11:35:09,915 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:09,915 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:09,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:09,916 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:09,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:09,941 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:10,019 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:10,019 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:10,019 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:35:10,021 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:35:10,021 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:35:10,021 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:35:10,021 INFO ]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2018-06-22 11:35:10,054 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:10,054 INFO ]: Finished difference Result 14 states and 17 transitions. [2018-06-22 11:35:10,055 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:35:10,055 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:35:10,055 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:10,056 INFO ]: With dead ends: 14 [2018-06-22 11:35:10,057 INFO ]: Without dead ends: 14 [2018-06-22 11:35:10,057 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:35:10,057 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 11:35:10,062 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 11:35:10,062 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 11:35:10,063 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-06-22 11:35:10,064 INFO ]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2018-06-22 11:35:10,064 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:10,064 INFO ]: Abstraction has 14 states and 17 transitions. [2018-06-22 11:35:10,064 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:35:10,064 INFO ]: Start isEmpty. Operand 14 states and 17 transitions. [2018-06-22 11:35:10,065 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:35:10,065 INFO ]: Found error trace [2018-06-22 11:35:10,065 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:10,065 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:10,065 INFO ]: Analyzing trace with hash 1830989231, now seen corresponding path program 1 times [2018-06-22 11:35:10,065 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:10,065 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:10,066 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:10,066 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:10,066 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:10,083 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:10,575 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:35:10,575 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:10,575 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:35:10,585 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:10,623 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:10,632 INFO ]: Computing forward predicates... [2018-06-22 11:35:10,826 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:35:10,856 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:10,856 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 11:35:10,856 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:35:10,856 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:35:10,857 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:35:10,857 INFO ]: Start difference. First operand 14 states and 17 transitions. Second operand 9 states. [2018-06-22 11:35:11,271 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:11,271 INFO ]: Finished difference Result 19 states and 29 transitions. [2018-06-22 11:35:11,271 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:35:11,271 INFO ]: Start accepts. Automaton has 9 states. Word has length 17 [2018-06-22 11:35:11,272 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:11,272 INFO ]: With dead ends: 19 [2018-06-22 11:35:11,272 INFO ]: Without dead ends: 19 [2018-06-22 11:35:11,273 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:35:11,273 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:35:11,278 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-06-22 11:35:11,279 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:35:11,279 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2018-06-22 11:35:11,280 INFO ]: Start accepts. Automaton has 17 states and 24 transitions. Word has length 17 [2018-06-22 11:35:11,280 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:11,280 INFO ]: Abstraction has 17 states and 24 transitions. [2018-06-22 11:35:11,280 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:35:11,280 INFO ]: Start isEmpty. Operand 17 states and 24 transitions. [2018-06-22 11:35:11,281 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:35:11,281 INFO ]: Found error trace [2018-06-22 11:35:11,281 INFO ]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:11,281 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:11,281 INFO ]: Analyzing trace with hash -239819849, now seen corresponding path program 2 times [2018-06-22 11:35:11,281 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:11,281 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:11,282 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:11,282 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:11,282 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:11,298 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:11,484 INFO ]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:35:11,484 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:11,484 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:35:11,497 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:35:11,515 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:35:11,515 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:11,517 INFO ]: Computing forward predicates... [2018-06-22 11:35:11,594 INFO ]: Checked inductivity of 32 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:35:11,624 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:11,624 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-06-22 11:35:11,624 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:35:11,624 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:35:11,624 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:35:11,624 INFO ]: Start difference. First operand 17 states and 24 transitions. Second operand 10 states. [2018-06-22 11:35:12,153 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:12,153 INFO ]: Finished difference Result 21 states and 33 transitions. [2018-06-22 11:35:12,153 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:35:12,153 INFO ]: Start accepts. Automaton has 10 states. Word has length 25 [2018-06-22 11:35:12,154 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:12,154 INFO ]: With dead ends: 21 [2018-06-22 11:35:12,154 INFO ]: Without dead ends: 21 [2018-06-22 11:35:12,155 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:35:12,155 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 11:35:12,161 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-06-22 11:35:12,161 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:35:12,162 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2018-06-22 11:35:12,162 INFO ]: Start accepts. Automaton has 19 states and 28 transitions. Word has length 25 [2018-06-22 11:35:12,162 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:12,162 INFO ]: Abstraction has 19 states and 28 transitions. [2018-06-22 11:35:12,162 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:35:12,162 INFO ]: Start isEmpty. Operand 19 states and 28 transitions. [2018-06-22 11:35:12,163 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:35:12,163 INFO ]: Found error trace [2018-06-22 11:35:12,163 INFO ]: trace histogram [7, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:12,164 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:12,164 INFO ]: Analyzing trace with hash 93087679, now seen corresponding path program 3 times [2018-06-22 11:35:12,164 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:12,164 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:12,164 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:12,164 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:35:12,164 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:12,185 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:12,483 INFO ]: Checked inductivity of 69 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-06-22 11:35:12,484 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:12,484 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 [2018-06-22 11:35:12,500 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:35:12,538 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-06-22 11:35:12,538 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:12,542 INFO ]: Computing forward predicates... [2018-06-22 11:35:12,897 INFO ]: Checked inductivity of 69 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-06-22 11:35:12,916 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:12,916 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2018-06-22 11:35:12,916 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:35:12,917 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:35:12,917 INFO ]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:35:12,917 INFO ]: Start difference. First operand 19 states and 28 transitions. Second operand 17 states. [2018-06-22 11:35:13,375 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:13,375 INFO ]: Finished difference Result 19 states and 32 transitions. [2018-06-22 11:35:13,375 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:35:13,375 INFO ]: Start accepts. Automaton has 17 states. Word has length 33 [2018-06-22 11:35:13,376 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:13,376 INFO ]: With dead ends: 19 [2018-06-22 11:35:13,376 INFO ]: Without dead ends: 0 [2018-06-22 11:35:13,376 INFO ]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2018-06-22 11:35:13,376 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:35:13,376 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:35:13,376 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:35:13,376 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:35:13,376 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-06-22 11:35:13,376 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:13,376 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:35:13,377 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:35:13,377 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:35:13,377 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:35:13,380 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:35:13 BoogieIcfgContainer [2018-06-22 11:35:13,380 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:35:13,381 INFO ]: Toolchain (without parser) took 4067.74 ms. Allocated memory was 309.9 MB in the beginning and 337.1 MB in the end (delta: 27.3 MB). Free memory was 267.4 MB in the beginning and 299.2 MB in the end (delta: -31.8 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:13,383 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 309.9 MB. Free memory is still 275.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:13,383 INFO ]: ChcToBoogie took 89.63 ms. Allocated memory is still 309.9 MB. Free memory was 266.4 MB in the beginning and 265.4 MB in the end (delta: 996.4 kB). Peak memory consumption was 996.4 kB. Max. memory is 3.6 GB. [2018-06-22 11:35:13,384 INFO ]: Boogie Preprocessor took 57.11 ms. Allocated memory is still 309.9 MB. Free memory was 265.4 MB in the beginning and 263.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:13,384 INFO ]: RCFGBuilder took 157.76 ms. Allocated memory is still 309.9 MB. Free memory was 263.4 MB in the beginning and 257.3 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:13,385 INFO ]: TraceAbstraction took 3753.46 ms. Allocated memory was 309.9 MB in the beginning and 337.1 MB in the end (delta: 27.3 MB). Free memory was 256.3 MB in the beginning and 299.2 MB in the end (delta: -42.8 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:13,388 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 309.9 MB. Free memory is still 275.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.63 ms. Allocated memory is still 309.9 MB. Free memory was 266.4 MB in the beginning and 265.4 MB in the end (delta: 996.4 kB). Peak memory consumption was 996.4 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.11 ms. Allocated memory is still 309.9 MB. Free memory was 265.4 MB in the beginning and 263.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 157.76 ms. Allocated memory is still 309.9 MB. Free memory was 263.4 MB in the beginning and 257.3 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3753.46 ms. Allocated memory was 309.9 MB in the beginning and 337.1 MB in the end (delta: 27.3 MB). Free memory was 256.3 MB in the beginning and 299.2 MB in the end (delta: -42.8 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 34 SDslu, 140 SDs, 0 SdLazy, 289 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 14976 SizeOfPredicates, 26 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 124/220 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/mc91_98.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-35-13-399.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_98.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-35-13-399.csv Received shutdown request...