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/mochi/recursive.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:23:34,620 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:23:34,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:23:34,636 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:23:34,636 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:23:34,638 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:23:34,639 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:23:34,643 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:23:34,644 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:23:34,646 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:23:34,647 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:23:34,647 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:23:34,648 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:23:34,649 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:23:34,649 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:23:34,653 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:23:34,655 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:23:34,660 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:23:34,662 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:23:34,663 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:23:34,670 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:23:34,672 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:23:34,672 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:23:34,672 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:23:34,673 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:23:34,674 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:23:34,675 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:23:34,676 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:23:34,677 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:23:34,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:23:34,678 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:23:34,678 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:23:34,679 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:23:34,679 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:23:34,680 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:23:34,685 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:23:34,706 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:23:34,706 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:23:34,707 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:23:34,707 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:23:34,708 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:23:34,708 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:23:34,708 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:23:34,708 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:23:34,708 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:23:34,709 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:23:34,709 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:23:34,709 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:23:34,709 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:23:34,709 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:23:34,709 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:23:34,710 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:23:34,711 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:23:34,711 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:23:34,711 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:23:34,711 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:23:34,711 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:23:34,713 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:23:34,713 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:23:34,765 INFO ]: Repository-Root is: /tmp [2018-06-24 21:23:34,786 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:23:34,791 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:23:34,792 INFO ]: Initializing SmtParser... [2018-06-24 21:23:34,793 INFO ]: SmtParser initialized [2018-06-24 21:23:34,793 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/recursive.smt2 [2018-06-24 21:23:34,795 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 21:23:34,887 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/recursive.smt2 unknown [2018-06-24 21:23:35,093 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/recursive.smt2 [2018-06-24 21:23:35,097 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:23:35,104 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:23:35,105 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:23:35,105 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:23:35,105 INFO ]: ChcToBoogie initialized [2018-06-24 21:23:35,108 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:23:35" (1/1) ... [2018-06-24 21:23:35,158 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35 Unit [2018-06-24 21:23:35,158 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:23:35,159 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:23:35,159 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:23:35,159 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:23:35,179 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35" (1/1) ... [2018-06-24 21:23:35,180 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35" (1/1) ... [2018-06-24 21:23:35,186 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35" (1/1) ... [2018-06-24 21:23:35,186 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35" (1/1) ... [2018-06-24 21:23:35,188 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35" (1/1) ... [2018-06-24 21:23:35,190 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35" (1/1) ... [2018-06-24 21:23:35,190 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35" (1/1) ... [2018-06-24 21:23:35,191 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:23:35,192 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:23:35,192 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:23:35,192 INFO ]: RCFGBuilder initialized [2018-06-24 21:23:35,192 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35" (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 21:23:35,202 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:23:35,202 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:23:35,202 INFO ]: Found implementation of procedure gotoProc Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:23:35,202 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:23:35,202 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:23:35,202 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 21:23:35,468 INFO ]: Using library mode [2018-06-24 21:23:35,469 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:35 BoogieIcfgContainer [2018-06-24 21:23:35,469 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:23:35,469 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:23:35,469 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:23:35,470 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:23:35,470 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:35" (1/1) ... [2018-06-24 21:23:35,491 INFO ]: Initial Icfg 17 locations, 22 edges [2018-06-24 21:23:35,493 INFO ]: Using Remove infeasible edges [2018-06-24 21:23:35,493 INFO ]: Using Maximize final states [2018-06-24 21:23:35,494 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:23:35,494 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:23:35,496 INFO ]: Using Remove sink states [2018-06-24 21:23:35,497 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:23:35,497 INFO ]: Using Use SBE [2018-06-24 21:23:35,507 INFO ]: SBE split 0 edges [2018-06-24 21:23:35,512 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:23:35,514 INFO ]: 0 new accepting states [2018-06-24 21:23:35,619 INFO ]: Removed 14 edges and 5 locations by large block encoding [2018-06-24 21:23:35,621 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:23:35,623 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:23:35,623 INFO ]: 0 new accepting states [2018-06-24 21:23:35,623 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:23:35,623 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:23:35,624 INFO ]: Encoded RCFG 10 locations, 15 edges [2018-06-24 21:23:35,625 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:23:35 BasicIcfg [2018-06-24 21:23:35,625 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:23:35,626 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:23:35,626 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:23:35,629 INFO ]: TraceAbstraction initialized [2018-06-24 21:23:35,629 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:23:35" (1/4) ... [2018-06-24 21:23:35,630 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef28364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:23:35, skipping insertion in model container [2018-06-24 21:23:35,630 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:35" (2/4) ... [2018-06-24 21:23:35,631 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef28364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:23:35, skipping insertion in model container [2018-06-24 21:23:35,633 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:35" (3/4) ... [2018-06-24 21:23:35,633 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef28364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:23:35, skipping insertion in model container [2018-06-24 21:23:35,633 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:23:35" (4/4) ... [2018-06-24 21:23:35,635 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:23:35,642 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:23:35,649 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:23:35,684 INFO ]: Using default assertion order modulation [2018-06-24 21:23:35,685 INFO ]: Interprodecural is true [2018-06-24 21:23:35,685 INFO ]: Hoare is false [2018-06-24 21:23:35,685 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:23:35,685 INFO ]: Backedges is TWOTRACK [2018-06-24 21:23:35,685 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:23:35,685 INFO ]: Difference is false [2018-06-24 21:23:35,685 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:23:35,685 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:23:35,693 INFO ]: Start isEmpty. Operand 10 states. [2018-06-24 21:23:35,702 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:23:35,702 INFO ]: Found error trace [2018-06-24 21:23:35,703 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:23:35,703 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:35,708 INFO ]: Analyzing trace with hash 33992167, now seen corresponding path program 1 times [2018-06-24 21:23:35,710 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:35,710 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:35,749 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:35,749 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:35,749 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:35,782 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:35,841 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:23:35,843 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:23:35,843 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:23:35,844 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:23:35,854 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:23:35,854 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:35,856 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-24 21:23:35,985 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:35,985 INFO ]: Finished difference Result 17 states and 27 transitions. [2018-06-24 21:23:35,986 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:23:35,987 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:23:35,987 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:35,998 INFO ]: With dead ends: 17 [2018-06-24 21:23:35,998 INFO ]: Without dead ends: 17 [2018-06-24 21:23:36,000 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 21:23:36,012 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-24 21:23:36,031 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-24 21:23:36,032 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-24 21:23:36,033 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2018-06-24 21:23:36,034 INFO ]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 5 [2018-06-24 21:23:36,035 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:36,035 INFO ]: Abstraction has 17 states and 27 transitions. [2018-06-24 21:23:36,035 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:23:36,035 INFO ]: Start isEmpty. Operand 17 states and 27 transitions. [2018-06-24 21:23:36,037 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:23:36,037 INFO ]: Found error trace [2018-06-24 21:23:36,037 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:23:36,037 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:36,037 INFO ]: Analyzing trace with hash 34141122, now seen corresponding path program 1 times [2018-06-24 21:23:36,037 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:36,037 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:36,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:36,038 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:36,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:36,049 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:36,084 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:23:36,085 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:23:36,085 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:23:36,086 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:23:36,086 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:23:36,086 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:36,086 INFO ]: Start difference. First operand 17 states and 27 transitions. Second operand 3 states. [2018-06-24 21:23:36,127 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:36,127 INFO ]: Finished difference Result 23 states and 35 transitions. [2018-06-24 21:23:36,127 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:23:36,127 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:23:36,127 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:36,128 INFO ]: With dead ends: 23 [2018-06-24 21:23:36,128 INFO ]: Without dead ends: 23 [2018-06-24 21:23:36,129 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 21:23:36,129 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-24 21:23:36,133 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-06-24 21:23:36,133 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-24 21:23:36,134 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2018-06-24 21:23:36,134 INFO ]: Start accepts. Automaton has 19 states and 29 transitions. Word has length 5 [2018-06-24 21:23:36,134 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:36,134 INFO ]: Abstraction has 19 states and 29 transitions. [2018-06-24 21:23:36,134 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:23:36,134 INFO ]: Start isEmpty. Operand 19 states and 29 transitions. [2018-06-24 21:23:36,135 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 21:23:36,135 INFO ]: Found error trace [2018-06-24 21:23:36,135 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:36,136 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:36,136 INFO ]: Analyzing trace with hash -869711767, now seen corresponding path program 1 times [2018-06-24 21:23:36,136 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:36,136 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:36,137 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:36,137 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:36,137 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:36,150 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:36,231 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:23:36,231 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:23:36,231 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 21:23:36,232 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:23:36,232 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:23:36,232 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:23:36,232 INFO ]: Start difference. First operand 19 states and 29 transitions. Second operand 5 states. [2018-06-24 21:23:36,573 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:36,573 INFO ]: Finished difference Result 30 states and 53 transitions. [2018-06-24 21:23:36,574 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:23:36,574 INFO ]: Start accepts. Automaton has 5 states. Word has length 10 [2018-06-24 21:23:36,574 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:36,577 INFO ]: With dead ends: 30 [2018-06-24 21:23:36,577 INFO ]: Without dead ends: 30 [2018-06-24 21:23:36,577 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:23:36,577 INFO ]: Start minimizeSevpa. Operand 30 states. [2018-06-24 21:23:36,584 INFO ]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-06-24 21:23:36,584 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-24 21:23:36,585 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 45 transitions. [2018-06-24 21:23:36,585 INFO ]: Start accepts. Automaton has 26 states and 45 transitions. Word has length 10 [2018-06-24 21:23:36,585 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:36,585 INFO ]: Abstraction has 26 states and 45 transitions. [2018-06-24 21:23:36,585 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:23:36,585 INFO ]: Start isEmpty. Operand 26 states and 45 transitions. [2018-06-24 21:23:36,587 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:23:36,587 INFO ]: Found error trace [2018-06-24 21:23:36,587 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:36,587 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:36,588 INFO ]: Analyzing trace with hash 1987471155, now seen corresponding path program 1 times [2018-06-24 21:23:36,588 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:36,588 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:36,588 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:36,589 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:36,589 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:36,606 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:36,682 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:23:36,682 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:36,682 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 [2018-06-24 21:23:36,691 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:36,723 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:36,730 INFO ]: Computing forward predicates... [2018-06-24 21:23:36,912 INFO ]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:23:36,934 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:36,934 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-24 21:23:36,935 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:23:36,935 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:23:36,935 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:23:36,935 INFO ]: Start difference. First operand 26 states and 45 transitions. Second operand 8 states. [2018-06-24 21:23:37,549 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:37,549 INFO ]: Finished difference Result 33 states and 58 transitions. [2018-06-24 21:23:37,551 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:23:37,551 INFO ]: Start accepts. Automaton has 8 states. Word has length 11 [2018-06-24 21:23:37,551 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:37,553 INFO ]: With dead ends: 33 [2018-06-24 21:23:37,553 INFO ]: Without dead ends: 33 [2018-06-24 21:23:37,553 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:23:37,553 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-24 21:23:37,565 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-06-24 21:23:37,566 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-24 21:23:37,567 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 49 transitions. [2018-06-24 21:23:37,567 INFO ]: Start accepts. Automaton has 28 states and 49 transitions. Word has length 11 [2018-06-24 21:23:37,567 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:37,567 INFO ]: Abstraction has 28 states and 49 transitions. [2018-06-24 21:23:37,567 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:23:37,567 INFO ]: Start isEmpty. Operand 28 states and 49 transitions. [2018-06-24 21:23:37,572 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-24 21:23:37,572 INFO ]: Found error trace [2018-06-24 21:23:37,572 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:37,573 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:37,573 INFO ]: Analyzing trace with hash -738812616, now seen corresponding path program 1 times [2018-06-24 21:23:37,573 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:37,573 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:37,574 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:37,576 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:37,576 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:37,598 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:37,724 INFO ]: Checked inductivity of 12 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:23:37,725 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:37,725 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 [2018-06-24 21:23:37,734 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:37,762 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:37,764 INFO ]: Computing forward predicates... [2018-06-24 21:23:37,787 INFO ]: Checked inductivity of 12 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:23:37,808 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:37,808 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-24 21:23:37,808 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:23:37,808 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:23:37,808 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:23:37,808 INFO ]: Start difference. First operand 28 states and 49 transitions. Second operand 4 states. [2018-06-24 21:23:37,866 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:37,866 INFO ]: Finished difference Result 37 states and 72 transitions. [2018-06-24 21:23:37,867 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:23:37,867 INFO ]: Start accepts. Automaton has 4 states. Word has length 16 [2018-06-24 21:23:37,867 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:37,870 INFO ]: With dead ends: 37 [2018-06-24 21:23:37,870 INFO ]: Without dead ends: 37 [2018-06-24 21:23:37,870 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 17 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 21:23:37,870 INFO ]: Start minimizeSevpa. Operand 37 states. [2018-06-24 21:23:37,878 INFO ]: Finished minimizeSevpa. Reduced states from 37 to 33. [2018-06-24 21:23:37,878 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-24 21:23:37,880 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 63 transitions. [2018-06-24 21:23:37,880 INFO ]: Start accepts. Automaton has 33 states and 63 transitions. Word has length 16 [2018-06-24 21:23:37,880 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:37,880 INFO ]: Abstraction has 33 states and 63 transitions. [2018-06-24 21:23:37,880 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:23:37,880 INFO ]: Start isEmpty. Operand 33 states and 63 transitions. [2018-06-24 21:23:37,883 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:23:37,883 INFO ]: Found error trace [2018-06-24 21:23:37,883 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:37,883 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:37,883 INFO ]: Analyzing trace with hash -1970554652, now seen corresponding path program 1 times [2018-06-24 21:23:37,883 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:37,883 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:37,884 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:37,884 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:37,884 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:37,895 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:37,939 INFO ]: Checked inductivity of 11 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:23:37,939 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:37,939 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 [2018-06-24 21:23:37,945 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:37,964 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:37,966 INFO ]: Computing forward predicates... [2018-06-24 21:23:38,025 INFO ]: Checked inductivity of 11 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:23:38,058 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:38,058 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-24 21:23:38,058 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:23:38,059 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:23:38,059 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:23:38,059 INFO ]: Start difference. First operand 33 states and 63 transitions. Second operand 8 states. [2018-06-24 21:23:38,246 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:38,246 INFO ]: Finished difference Result 23 states and 40 transitions. [2018-06-24 21:23:38,247 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 21:23:38,247 INFO ]: Start accepts. Automaton has 8 states. Word has length 15 [2018-06-24 21:23:38,247 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:38,247 INFO ]: With dead ends: 23 [2018-06-24 21:23:38,247 INFO ]: Without dead ends: 0 [2018-06-24 21:23:38,248 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:23:38,248 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:23:38,248 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:23:38,248 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:23:38,248 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:23:38,248 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-06-24 21:23:38,248 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:38,248 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:23:38,248 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:23:38,248 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:23:38,248 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:23:38,250 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:23:38,252 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:23:38 BasicIcfg [2018-06-24 21:23:38,252 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:23:38,253 INFO ]: Toolchain (without parser) took 3155.10 ms. Allocated memory was 307.2 MB in the beginning and 325.6 MB in the end (delta: 18.4 MB). Free memory was 263.6 MB in the beginning and 239.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:38,254 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:23:38,255 INFO ]: ChcToBoogie took 54.41 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:38,255 INFO ]: Boogie Preprocessor took 31.77 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 259.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:38,255 INFO ]: RCFGBuilder took 277.30 ms. Allocated memory is still 307.2 MB. Free memory was 259.6 MB in the beginning and 251.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:38,256 INFO ]: BlockEncodingV2 took 155.89 ms. Allocated memory is still 307.2 MB. Free memory was 251.5 MB in the beginning and 247.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:38,256 INFO ]: TraceAbstraction took 2626.04 ms. Allocated memory was 307.2 MB in the beginning and 325.6 MB in the end (delta: 18.4 MB). Free memory was 247.5 MB in the beginning and 239.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:38,261 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 17 locations, 22 edges - StatisticsResult: Encoded RCFG 10 locations, 15 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.41 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 31.77 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 259.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 277.30 ms. Allocated memory is still 307.2 MB. Free memory was 259.6 MB in the beginning and 251.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 155.89 ms. Allocated memory is still 307.2 MB. Free memory was 251.5 MB in the beginning and 247.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2626.04 ms. Allocated memory was 307.2 MB in the beginning and 325.6 MB in the end (delta: 18.4 MB). Free memory was 247.5 MB in the beginning and 239.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 26.3 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, 10 locations, 1 error locations. SAFE Result, 2.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 103 SDtfs, 32 SDslu, 133 SDs, 0 SdLazy, 223 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=5, 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, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 2795 SizeOfPredicates, 22 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 49/59 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/recursive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-23-38-274.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/recursive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-23-38-274.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/recursive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-23-38-274.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/recursive.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-23-38-274.csv Received shutdown request...