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/bcopy3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:13:32,624 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:13:32,626 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:13:32,636 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:13:32,637 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:13:32,638 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:13:32,642 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:13:32,644 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:13:32,645 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:13:32,647 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:13:32,648 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:13:32,648 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:13:32,649 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:13:32,650 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:13:32,654 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:13:32,655 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:13:32,657 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:13:32,670 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:13:32,671 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:13:32,672 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:13:32,673 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:13:32,675 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:13:32,675 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:13:32,676 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:13:32,676 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:13:32,681 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:13:32,682 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:13:32,682 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:13:32,683 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:13:32,683 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:13:32,684 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:13:32,688 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:13:32,688 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:13:32,689 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:13:32,690 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:13:32,690 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:13:32,705 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:13:32,705 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:13:32,705 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:13:32,706 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:13:32,706 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:13:32,707 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:13:32,707 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:13:32,707 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:13:32,707 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:13:32,708 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:13:32,708 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:13:32,708 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:13:32,708 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:13:32,708 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:13:32,708 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:13:32,709 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:13:32,709 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:13:32,709 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:13:32,709 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:13:32,709 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:13:32,709 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:13:32,711 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:13:32,711 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:13:32,744 INFO ]: Repository-Root is: /tmp [2018-06-24 21:13:32,763 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:13:32,770 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:13:32,771 INFO ]: Initializing SmtParser... [2018-06-24 21:13:32,772 INFO ]: SmtParser initialized [2018-06-24 21:13:32,772 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/bcopy3.smt2 [2018-06-24 21:13:32,774 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 21:13:32,866 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/bcopy3.smt2 unknown [2018-06-24 21:13:33,121 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/bcopy3.smt2 [2018-06-24 21:13:33,127 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:13:33,134 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:13:33,134 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:13:33,134 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:13:33,134 INFO ]: ChcToBoogie initialized [2018-06-24 21:13:33,138 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:13:33" (1/1) ... [2018-06-24 21:13:33,210 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33 Unit [2018-06-24 21:13:33,210 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:13:33,211 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:13:33,211 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:13:33,211 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:13:33,232 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33" (1/1) ... [2018-06-24 21:13:33,232 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33" (1/1) ... [2018-06-24 21:13:33,239 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33" (1/1) ... [2018-06-24 21:13:33,240 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33" (1/1) ... [2018-06-24 21:13:33,244 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33" (1/1) ... [2018-06-24 21:13:33,247 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33" (1/1) ... [2018-06-24 21:13:33,248 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33" (1/1) ... [2018-06-24 21:13:33,253 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:13:33,254 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:13:33,254 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:13:33,254 INFO ]: RCFGBuilder initialized [2018-06-24 21:13:33,255 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33" (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 [2018-06-24 21:13:33,270 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:13:33,270 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:13:33,270 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:13:33,270 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:13:33,270 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:13:33,270 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 21:13:33,652 INFO ]: Using library mode [2018-06-24 21:13:33,653 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:33 BoogieIcfgContainer [2018-06-24 21:13:33,653 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:13:33,653 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:13:33,653 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:13:33,654 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:13:33,655 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:33" (1/1) ... [2018-06-24 21:13:33,670 INFO ]: Initial Icfg 27 locations, 36 edges [2018-06-24 21:13:33,671 INFO ]: Using Remove infeasible edges [2018-06-24 21:13:33,671 INFO ]: Using Maximize final states [2018-06-24 21:13:33,671 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:13:33,671 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:13:33,673 INFO ]: Using Remove sink states [2018-06-24 21:13:33,674 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:13:33,674 INFO ]: Using Use SBE [2018-06-24 21:13:33,710 INFO ]: SBE split 1 edges [2018-06-24 21:13:33,721 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-24 21:13:33,724 INFO ]: 0 new accepting states [2018-06-24 21:13:33,977 INFO ]: Removed 34 edges and 11 locations by large block encoding [2018-06-24 21:13:33,979 INFO ]: Removed 2 edges and 2 locations by removing sink states [2018-06-24 21:13:33,980 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:13:33,980 INFO ]: 0 new accepting states [2018-06-24 21:13:33,980 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:13:33,980 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:13:33,981 INFO ]: Encoded RCFG 12 locations, 23 edges [2018-06-24 21:13:33,985 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:13:33 BasicIcfg [2018-06-24 21:13:33,985 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:13:33,986 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:13:33,986 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:13:33,989 INFO ]: TraceAbstraction initialized [2018-06-24 21:13:33,989 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:13:33" (1/4) ... [2018-06-24 21:13:33,990 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e54badf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:13:33, skipping insertion in model container [2018-06-24 21:13:33,990 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:13:33" (2/4) ... [2018-06-24 21:13:33,990 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e54badf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:13:33, skipping insertion in model container [2018-06-24 21:13:33,990 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:33" (3/4) ... [2018-06-24 21:13:33,990 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e54badf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:13:33, skipping insertion in model container [2018-06-24 21:13:33,990 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:13:33" (4/4) ... [2018-06-24 21:13:33,993 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:13:34,002 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:13:34,013 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:13:34,066 INFO ]: Using default assertion order modulation [2018-06-24 21:13:34,066 INFO ]: Interprodecural is true [2018-06-24 21:13:34,066 INFO ]: Hoare is false [2018-06-24 21:13:34,066 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:13:34,066 INFO ]: Backedges is TWOTRACK [2018-06-24 21:13:34,066 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:13:34,066 INFO ]: Difference is false [2018-06-24 21:13:34,067 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:13:34,067 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:13:34,076 INFO ]: Start isEmpty. Operand 12 states. [2018-06-24 21:13:34,092 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 21:13:34,092 INFO ]: Found error trace [2018-06-24 21:13:34,093 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 21:13:34,093 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:34,099 INFO ]: Analyzing trace with hash 1275275, now seen corresponding path program 1 times [2018-06-24 21:13:34,101 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:34,101 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:34,136 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:34,136 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:34,136 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:34,168 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:34,216 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:13:34,217 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:13:34,217 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:13:34,218 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:13:34,228 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:13:34,229 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:13:34,231 INFO ]: Start difference. First operand 12 states. Second operand 3 states. [2018-06-24 21:13:34,527 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:13:34,527 INFO ]: Finished difference Result 21 states and 41 transitions. [2018-06-24 21:13:34,528 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:13:34,529 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 21:13:34,529 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:13:34,537 INFO ]: With dead ends: 21 [2018-06-24 21:13:34,537 INFO ]: Without dead ends: 17 [2018-06-24 21:13:34,539 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 21:13:34,555 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-24 21:13:34,574 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-24 21:13:34,575 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-24 21:13:34,576 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 33 transitions. [2018-06-24 21:13:34,577 INFO ]: Start accepts. Automaton has 17 states and 33 transitions. Word has length 4 [2018-06-24 21:13:34,578 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:13:34,578 INFO ]: Abstraction has 17 states and 33 transitions. [2018-06-24 21:13:34,578 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:13:34,578 INFO ]: Start isEmpty. Operand 17 states and 33 transitions. [2018-06-24 21:13:34,584 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 21:13:34,584 INFO ]: Found error trace [2018-06-24 21:13:34,584 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 21:13:34,584 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:34,584 INFO ]: Analyzing trace with hash 1276236, now seen corresponding path program 1 times [2018-06-24 21:13:34,584 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:34,584 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:34,585 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:34,585 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:34,585 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:34,591 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:34,616 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:13:34,616 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:13:34,616 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:13:34,617 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:13:34,617 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:13:34,617 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:13:34,617 INFO ]: Start difference. First operand 17 states and 33 transitions. Second operand 3 states. [2018-06-24 21:13:34,720 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:13:34,720 INFO ]: Finished difference Result 24 states and 49 transitions. [2018-06-24 21:13:34,720 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:13:34,720 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 21:13:34,720 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:13:34,721 INFO ]: With dead ends: 24 [2018-06-24 21:13:34,721 INFO ]: Without dead ends: 24 [2018-06-24 21:13:34,722 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 21:13:34,722 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-24 21:13:34,726 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-06-24 21:13:34,727 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-24 21:13:34,728 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 49 transitions. [2018-06-24 21:13:34,728 INFO ]: Start accepts. Automaton has 24 states and 49 transitions. Word has length 4 [2018-06-24 21:13:34,728 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:13:34,728 INFO ]: Abstraction has 24 states and 49 transitions. [2018-06-24 21:13:34,728 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:13:34,728 INFO ]: Start isEmpty. Operand 24 states and 49 transitions. [2018-06-24 21:13:34,729 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:13:34,729 INFO ]: Found error trace [2018-06-24 21:13:34,729 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:13:34,729 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:34,729 INFO ]: Analyzing trace with hash 39648005, now seen corresponding path program 1 times [2018-06-24 21:13:34,729 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:34,729 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:34,730 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:34,730 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:34,730 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:34,743 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:34,787 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:13:34,787 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:13:34,787 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:13:34,787 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:13:34,787 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:13:34,787 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:13:34,788 INFO ]: Start difference. First operand 24 states and 49 transitions. Second operand 3 states. [2018-06-24 21:13:34,813 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:13:34,813 INFO ]: Finished difference Result 39 states and 70 transitions. [2018-06-24 21:13:34,813 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:13:34,814 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:13:34,814 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:13:34,815 INFO ]: With dead ends: 39 [2018-06-24 21:13:34,815 INFO ]: Without dead ends: 39 [2018-06-24 21:13:34,816 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 21:13:34,816 INFO ]: Start minimizeSevpa. Operand 39 states. [2018-06-24 21:13:34,821 INFO ]: Finished minimizeSevpa. Reduced states from 39 to 27. [2018-06-24 21:13:34,821 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-24 21:13:34,822 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 52 transitions. [2018-06-24 21:13:34,822 INFO ]: Start accepts. Automaton has 27 states and 52 transitions. Word has length 5 [2018-06-24 21:13:34,822 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:13:34,822 INFO ]: Abstraction has 27 states and 52 transitions. [2018-06-24 21:13:34,822 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:13:34,822 INFO ]: Start isEmpty. Operand 27 states and 52 transitions. [2018-06-24 21:13:34,823 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:13:34,823 INFO ]: Found error trace [2018-06-24 21:13:34,823 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:13:34,823 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:34,823 INFO ]: Analyzing trace with hash 39677796, now seen corresponding path program 1 times [2018-06-24 21:13:34,823 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:34,823 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:34,824 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:34,824 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:34,824 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:34,836 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:34,885 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:13:34,885 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:13:34,885 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:13:34,885 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:13:34,885 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:13:34,885 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:13:34,885 INFO ]: Start difference. First operand 27 states and 52 transitions. Second operand 3 states. [2018-06-24 21:13:34,954 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:13:34,955 INFO ]: Finished difference Result 33 states and 52 transitions. [2018-06-24 21:13:34,956 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:13:34,956 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:13:34,956 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:13:34,957 INFO ]: With dead ends: 33 [2018-06-24 21:13:34,957 INFO ]: Without dead ends: 27 [2018-06-24 21:13:34,957 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 21:13:34,957 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-24 21:13:34,964 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-24 21:13:34,964 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-24 21:13:34,968 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2018-06-24 21:13:34,968 INFO ]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 5 [2018-06-24 21:13:34,968 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:13:34,968 INFO ]: Abstraction has 27 states and 46 transitions. [2018-06-24 21:13:34,968 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:13:34,968 INFO ]: Start isEmpty. Operand 27 states and 46 transitions. [2018-06-24 21:13:34,970 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-24 21:13:34,970 INFO ]: Found error trace [2018-06-24 21:13:34,970 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:13:34,970 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:34,970 INFO ]: Analyzing trace with hash 564257134, now seen corresponding path program 1 times [2018-06-24 21:13:34,970 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:34,970 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:34,971 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:34,971 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:34,971 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:35,020 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:35,144 INFO ]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:13:35,144 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:13:35,144 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 21:13:35,151 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:35,229 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:35,236 INFO ]: Computing forward predicates... [2018-06-24 21:13:35,260 INFO ]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-24 21:13:35,282 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:13:35,282 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2018-06-24 21:13:35,283 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:13:35,283 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:13:35,283 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:13:35,283 INFO ]: Start difference. First operand 27 states and 46 transitions. Second operand 5 states. [2018-06-24 21:13:35,699 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:13:35,699 INFO ]: Finished difference Result 51 states and 93 transitions. [2018-06-24 21:13:35,699 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 21:13:35,699 INFO ]: Start accepts. Automaton has 5 states. Word has length 14 [2018-06-24 21:13:35,700 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:13:35,703 INFO ]: With dead ends: 51 [2018-06-24 21:13:35,703 INFO ]: Without dead ends: 41 [2018-06-24 21:13:35,703 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:13:35,703 INFO ]: Start minimizeSevpa. Operand 41 states. [2018-06-24 21:13:35,711 INFO ]: Finished minimizeSevpa. Reduced states from 41 to 31. [2018-06-24 21:13:35,711 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-24 21:13:35,712 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 52 transitions. [2018-06-24 21:13:35,712 INFO ]: Start accepts. Automaton has 31 states and 52 transitions. Word has length 14 [2018-06-24 21:13:35,712 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:13:35,712 INFO ]: Abstraction has 31 states and 52 transitions. [2018-06-24 21:13:35,712 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:13:35,712 INFO ]: Start isEmpty. Operand 31 states and 52 transitions. [2018-06-24 21:13:35,714 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-24 21:13:35,714 INFO ]: Found error trace [2018-06-24 21:13:35,714 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:13:35,714 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:35,714 INFO ]: Analyzing trace with hash -1069831033, now seen corresponding path program 1 times [2018-06-24 21:13:35,714 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:35,714 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:35,715 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:35,715 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:35,715 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:35,727 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:35,802 INFO ]: Checked inductivity of 17 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-24 21:13:35,802 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:13:35,802 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 21:13:35,815 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:35,872 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:35,874 INFO ]: Computing forward predicates... [2018-06-24 21:13:35,880 INFO ]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:13:35,910 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:13:35,910 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-24 21:13:35,910 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:13:35,910 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:13:35,911 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:13:35,911 INFO ]: Start difference. First operand 31 states and 52 transitions. Second operand 3 states. [2018-06-24 21:13:36,031 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:13:36,032 INFO ]: Finished difference Result 37 states and 61 transitions. [2018-06-24 21:13:36,035 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:13:36,035 INFO ]: Start accepts. Automaton has 3 states. Word has length 19 [2018-06-24 21:13:36,035 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:13:36,037 INFO ]: With dead ends: 37 [2018-06-24 21:13:36,037 INFO ]: Without dead ends: 31 [2018-06-24 21:13:36,037 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 20 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 21:13:36,037 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-24 21:13:36,046 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-24 21:13:36,046 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-24 21:13:36,047 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 50 transitions. [2018-06-24 21:13:36,047 INFO ]: Start accepts. Automaton has 31 states and 50 transitions. Word has length 19 [2018-06-24 21:13:36,047 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:13:36,047 INFO ]: Abstraction has 31 states and 50 transitions. [2018-06-24 21:13:36,047 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:13:36,047 INFO ]: Start isEmpty. Operand 31 states and 50 transitions. [2018-06-24 21:13:36,052 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-24 21:13:36,052 INFO ]: Found error trace [2018-06-24 21:13:36,052 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:13:36,052 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:13:36,052 INFO ]: Analyzing trace with hash 1389198896, now seen corresponding path program 1 times [2018-06-24 21:13:36,052 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:13:36,052 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:13:36,055 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:36,056 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:36,056 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:13:36,099 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:36,295 INFO ]: Checked inductivity of 27 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-24 21:13:36,295 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:13:36,295 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 21:13:36,308 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:13:36,366 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:13:36,377 INFO ]: Computing forward predicates... [2018-06-24 21:13:36,407 INFO ]: Checked inductivity of 27 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-24 21:13:36,441 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:13:36,441 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-06-24 21:13:36,441 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:13:36,441 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:13:36,441 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:13:36,441 INFO ]: Start difference. First operand 31 states and 50 transitions. Second operand 7 states. [2018-06-24 21:13:36,686 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:13:36,687 INFO ]: Finished difference Result 28 states and 46 transitions. [2018-06-24 21:13:36,687 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:13:36,687 INFO ]: Start accepts. Automaton has 7 states. Word has length 23 [2018-06-24 21:13:36,687 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:13:36,687 INFO ]: With dead ends: 28 [2018-06-24 21:13:36,687 INFO ]: Without dead ends: 0 [2018-06-24 21:13:36,687 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:13:36,687 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:13:36,688 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:13:36,688 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:13:36,688 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:13:36,688 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-06-24 21:13:36,688 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:13:36,688 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:13:36,688 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:13:36,688 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:13:36,688 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:13:36,690 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:13:36,692 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:13:36 BasicIcfg [2018-06-24 21:13:36,692 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:13:36,693 INFO ]: Toolchain (without parser) took 3565.50 ms. Allocated memory was 302.5 MB in the beginning and 324.0 MB in the end (delta: 21.5 MB). Free memory was 254.9 MB in the beginning and 214.8 MB in the end (delta: 40.1 MB). Peak memory consumption was 61.6 MB. Max. memory is 3.6 GB. [2018-06-24 21:13:36,694 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 302.5 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:13:36,694 INFO ]: ChcToBoogie took 76.35 ms. Allocated memory is still 302.5 MB. Free memory was 253.9 MB in the beginning and 251.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:13:36,695 INFO ]: Boogie Preprocessor took 42.41 ms. Allocated memory is still 302.5 MB. Free memory was 251.9 MB in the beginning and 250.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:13:36,696 INFO ]: RCFGBuilder took 398.79 ms. Allocated memory is still 302.5 MB. Free memory was 250.9 MB in the beginning and 238.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:13:36,696 INFO ]: BlockEncodingV2 took 331.61 ms. Allocated memory is still 302.5 MB. Free memory was 238.9 MB in the beginning and 227.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:13:36,697 INFO ]: TraceAbstraction took 2706.18 ms. Allocated memory was 302.5 MB in the beginning and 324.0 MB in the end (delta: 21.5 MB). Free memory was 227.9 MB in the beginning and 214.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 34.7 MB. Max. memory is 3.6 GB. [2018-06-24 21:13:36,701 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 27 locations, 36 edges - StatisticsResult: Encoded RCFG 12 locations, 23 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 302.5 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 76.35 ms. Allocated memory is still 302.5 MB. Free memory was 253.9 MB in the beginning and 251.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 42.41 ms. Allocated memory is still 302.5 MB. Free memory was 251.9 MB in the beginning and 250.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 398.79 ms. Allocated memory is still 302.5 MB. Free memory was 250.9 MB in the beginning and 238.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 331.61 ms. Allocated memory is still 302.5 MB. Free memory was 238.9 MB in the beginning and 227.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2706.18 ms. Allocated memory was 302.5 MB in the beginning and 324.0 MB in the end (delta: 21.5 MB). Free memory was 227.9 MB in the beginning and 214.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 34.7 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 138 SDtfs, 41 SDslu, 78 SDs, 0 SdLazy, 190 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 7 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 3644 SizeOfPredicates, 13 NumberOfNonLiveVariables, 633 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 92/102 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/bcopy3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-13-36-712.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bcopy3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-13-36-712.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bcopy3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-13-36-712.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bcopy3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-13-36-712.csv Received shutdown request...