java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.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/inductive3-2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:11:45,734 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:11:45,736 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:11:45,751 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:11:45,751 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:11:45,752 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:11:45,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:11:45,759 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:11:45,761 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:11:45,762 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:11:45,763 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:11:45,763 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:11:45,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:11:45,766 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:11:45,767 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:11:45,768 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:11:45,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:11:45,782 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:11:45,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:11:45,784 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:11:45,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:11:45,787 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:11:45,787 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:11:45,788 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:11:45,788 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:11:45,789 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:11:45,790 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:11:45,791 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:11:45,792 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:11:45,792 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:11:45,792 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:11:45,793 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:11:45,793 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:11:45,794 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:11:45,795 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:11:45,795 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:11:45,819 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:11:45,819 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:11:45,819 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:11:45,819 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:11:45,820 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:11:45,821 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:11:45,821 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:11:45,821 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:11:45,821 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:11:45,821 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:11:45,822 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:11:45,822 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:11:45,822 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:11:45,822 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:11:45,822 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:11:45,822 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:11:45,824 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:11:45,825 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:11:45,825 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:11:45,825 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:11:45,825 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:11:45,826 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:11:45,827 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:11:45,874 INFO ]: Repository-Root is: /tmp [2018-06-24 21:11:45,894 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:11:45,900 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:11:45,901 INFO ]: Initializing SmtParser... [2018-06-24 21:11:45,902 INFO ]: SmtParser initialized [2018-06-24 21:11:45,902 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive3-2.smt2 [2018-06-24 21:11:45,904 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 [2018-06-24 21:11:45,992 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive3-2.smt2 unknown [2018-06-24 21:11:46,146 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive3-2.smt2 [2018-06-24 21:11:46,164 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:11:46,169 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:11:46,170 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:11:46,170 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:11:46,170 INFO ]: ChcToBoogie initialized [2018-06-24 21:11:46,174 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:11:46" (1/1) ... [2018-06-24 21:11:46,227 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46 Unit [2018-06-24 21:11:46,227 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:11:46,228 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:11:46,228 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:11:46,228 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:11:46,249 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46" (1/1) ... [2018-06-24 21:11:46,249 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46" (1/1) ... [2018-06-24 21:11:46,254 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46" (1/1) ... [2018-06-24 21:11:46,254 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46" (1/1) ... [2018-06-24 21:11:46,257 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46" (1/1) ... [2018-06-24 21:11:46,259 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46" (1/1) ... [2018-06-24 21:11:46,260 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46" (1/1) ... [2018-06-24 21:11:46,261 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:11:46,262 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:11:46,262 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:11:46,262 INFO ]: RCFGBuilder initialized [2018-06-24 21:11:46,262 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46" (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) [2018-06-24 21:11:46,281 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:11:46,281 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:11:46,281 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:11:46,281 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:11:46,281 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:11:46,281 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 [2018-06-24 21:11:46,476 INFO ]: Using library mode [2018-06-24 21:11:46,476 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:11:46 BoogieIcfgContainer [2018-06-24 21:11:46,477 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:11:46,477 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:11:46,477 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:11:46,478 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:11:46,478 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:11:46" (1/1) ... [2018-06-24 21:11:46,490 INFO ]: Initial Icfg 13 locations, 17 edges [2018-06-24 21:11:46,491 INFO ]: Using Remove infeasible edges [2018-06-24 21:11:46,491 INFO ]: Using Maximize final states [2018-06-24 21:11:46,492 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:11:46,492 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:11:46,494 INFO ]: Using Remove sink states [2018-06-24 21:11:46,494 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:11:46,494 INFO ]: Using Use SBE [2018-06-24 21:11:46,503 INFO ]: SBE split 0 edges [2018-06-24 21:11:46,508 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:11:46,510 INFO ]: 0 new accepting states [2018-06-24 21:11:46,570 INFO ]: Removed 8 edges and 3 locations by large block encoding [2018-06-24 21:11:46,572 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:11:46,574 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:11:46,574 INFO ]: 0 new accepting states [2018-06-24 21:11:46,574 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:11:46,575 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:11:46,575 INFO ]: Encoded RCFG 8 locations, 11 edges [2018-06-24 21:11:46,575 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:11:46 BasicIcfg [2018-06-24 21:11:46,575 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:11:46,576 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:11:46,576 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:11:46,587 INFO ]: TraceAbstraction initialized [2018-06-24 21:11:46,587 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:11:46" (1/4) ... [2018-06-24 21:11:46,588 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef64fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:11:46, skipping insertion in model container [2018-06-24 21:11:46,588 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:11:46" (2/4) ... [2018-06-24 21:11:46,588 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef64fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:11:46, skipping insertion in model container [2018-06-24 21:11:46,588 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:11:46" (3/4) ... [2018-06-24 21:11:46,588 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef64fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:11:46, skipping insertion in model container [2018-06-24 21:11:46,588 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:11:46" (4/4) ... [2018-06-24 21:11:46,592 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:11:46,602 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:11:46,620 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:11:46,677 INFO ]: Using default assertion order modulation [2018-06-24 21:11:46,678 INFO ]: Interprodecural is true [2018-06-24 21:11:46,678 INFO ]: Hoare is false [2018-06-24 21:11:46,678 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:11:46,678 INFO ]: Backedges is TWOTRACK [2018-06-24 21:11:46,678 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:11:46,678 INFO ]: Difference is false [2018-06-24 21:11:46,678 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:11:46,678 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:11:46,686 INFO ]: Start isEmpty. Operand 8 states. [2018-06-24 21:11:46,696 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:11:46,696 INFO ]: Found error trace [2018-06-24 21:11:46,697 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:11:46,697 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:11:46,702 INFO ]: Analyzing trace with hash 34696452, now seen corresponding path program 1 times [2018-06-24 21:11:46,704 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:11:46,704 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:11:46,735 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:11:46,735 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:11:46,735 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:11:46,771 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:11:46,821 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:11:46,823 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:11:46,823 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:11:46,825 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:11:46,836 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:11:46,836 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:11:46,838 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-24 21:11:46,894 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:11:46,894 INFO ]: Finished difference Result 13 states and 19 transitions. [2018-06-24 21:11:46,895 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:11:46,896 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:11:46,896 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:11:46,906 INFO ]: With dead ends: 13 [2018-06-24 21:11:46,906 INFO ]: Without dead ends: 13 [2018-06-24 21:11:46,908 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 [2018-06-24 21:11:46,926 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:11:46,963 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-24 21:11:46,967 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:11:46,968 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2018-06-24 21:11:46,970 INFO ]: Start accepts. Automaton has 13 states and 19 transitions. Word has length 5 [2018-06-24 21:11:46,971 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:11:46,971 INFO ]: Abstraction has 13 states and 19 transitions. [2018-06-24 21:11:46,971 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:11:46,971 INFO ]: Start isEmpty. Operand 13 states and 19 transitions. [2018-06-24 21:11:46,974 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 21:11:46,974 INFO ]: Found error trace [2018-06-24 21:11:46,974 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:11:46,974 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:11:46,974 INFO ]: Analyzing trace with hash -1663061034, now seen corresponding path program 1 times [2018-06-24 21:11:46,974 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:11:46,974 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:11:46,975 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:11:46,975 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:11:46,975 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:11:46,995 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:11:47,167 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:11:47,167 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:11:47,167 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 21:11:47,169 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:11:47,169 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:11:47,169 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:11:47,169 INFO ]: Start difference. First operand 13 states and 19 transitions. Second operand 4 states. [2018-06-24 21:11:47,280 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:11:47,281 INFO ]: Finished difference Result 15 states and 20 transitions. [2018-06-24 21:11:47,281 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:11:47,281 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-24 21:11:47,281 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:11:47,283 INFO ]: With dead ends: 15 [2018-06-24 21:11:47,283 INFO ]: Without dead ends: 15 [2018-06-24 21:11:47,284 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:11:47,284 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-24 21:11:47,287 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-06-24 21:11:47,287 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-24 21:11:47,288 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-06-24 21:11:47,288 INFO ]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2018-06-24 21:11:47,288 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:11:47,288 INFO ]: Abstraction has 14 states and 18 transitions. [2018-06-24 21:11:47,288 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:11:47,288 INFO ]: Start isEmpty. Operand 14 states and 18 transitions. [2018-06-24 21:11:47,289 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 21:11:47,289 INFO ]: Found error trace [2018-06-24 21:11:47,289 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:11:47,289 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:11:47,289 INFO ]: Analyzing trace with hash -1663060073, now seen corresponding path program 1 times [2018-06-24 21:11:47,289 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:11:47,289 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:11:47,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:11:47,290 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:11:47,290 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:11:47,304 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:11:47,392 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:11:47,392 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:11:47,392 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 21:11:47,393 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:11:47,393 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:11:47,393 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:11:47,393 INFO ]: Start difference. First operand 14 states and 18 transitions. Second operand 4 states. [2018-06-24 21:11:47,426 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:11:47,426 INFO ]: Finished difference Result 11 states and 14 transitions. [2018-06-24 21:11:47,426 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:11:47,426 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-24 21:11:47,426 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:11:47,426 INFO ]: With dead ends: 11 [2018-06-24 21:11:47,426 INFO ]: Without dead ends: 0 [2018-06-24 21:11:47,427 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 [2018-06-24 21:11:47,427 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:11:47,427 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:11:47,427 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:11:47,427 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:11:47,427 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-24 21:11:47,427 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:11:47,427 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:11:47,427 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:11:47,427 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:11:47,427 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:11:47,429 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:11:47,433 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:11:47 BasicIcfg [2018-06-24 21:11:47,433 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:11:47,434 INFO ]: Toolchain (without parser) took 1269.56 ms. Allocated memory is still 300.4 MB. Free memory was 256.8 MB in the beginning and 218.5 MB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 3.6 GB. [2018-06-24 21:11:47,435 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 300.4 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:11:47,436 INFO ]: ChcToBoogie took 57.81 ms. Allocated memory is still 300.4 MB. Free memory was 256.8 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:11:47,439 INFO ]: Boogie Preprocessor took 33.50 ms. Allocated memory is still 300.4 MB. Free memory was 254.8 MB in the beginning and 253.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:11:47,439 INFO ]: RCFGBuilder took 215.03 ms. Allocated memory is still 300.4 MB. Free memory was 253.8 MB in the beginning and 245.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:11:47,440 INFO ]: BlockEncodingV2 took 98.35 ms. Allocated memory is still 300.4 MB. Free memory was 245.8 MB in the beginning and 242.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:11:47,441 INFO ]: TraceAbstraction took 856.65 ms. Allocated memory is still 300.4 MB. Free memory was 242.8 MB in the beginning and 218.5 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 3.6 GB. [2018-06-24 21:11:47,449 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 17 edges - StatisticsResult: Encoded RCFG 8 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 300.4 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.81 ms. Allocated memory is still 300.4 MB. Free memory was 256.8 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.50 ms. Allocated memory is still 300.4 MB. Free memory was 254.8 MB in the beginning and 253.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 215.03 ms. Allocated memory is still 300.4 MB. Free memory was 253.8 MB in the beginning and 245.8 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 98.35 ms. Allocated memory is still 300.4 MB. Free memory was 245.8 MB in the beginning and 242.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 856.65 ms. Allocated memory is still 300.4 MB. Free memory was 242.8 MB in the beginning and 218.5 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 8 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 4 SDslu, 31 SDs, 0 SdLazy, 20 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 6/6 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/inductive3-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-11-47-469.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive3-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-11-47-469.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive3-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-11-47-469.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive3-2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-11-47-469.csv Received shutdown request...