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/eldarica-misc/LIA/reve/027b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:12:26,923 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:12:26,924 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:12:26,938 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:12:26,938 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:12:26,939 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:12:26,940 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:12:26,944 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:12:26,947 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:12:26,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:12:26,948 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:12:26,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:12:26,949 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:12:26,950 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:12:26,951 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:12:26,952 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:12:26,952 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:12:26,954 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:12:26,956 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:12:26,957 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:12:26,958 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:12:26,959 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:12:26,961 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:12:26,962 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:12:26,962 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:12:26,963 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:12:26,964 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:12:26,964 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:12:26,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:12:26,966 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:12:26,966 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:12:26,967 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:12:26,967 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:12:26,967 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:12:26,968 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:12:26,969 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:12:26,969 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:12:26,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:12:26,982 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:12:26,983 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:12:26,983 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:12:26,984 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:12:26,984 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:12:26,984 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:12:26,984 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:12:26,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:12:26,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:12:26,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:12:26,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:12:26,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:12:26,986 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:12:26,986 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:12:26,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:12:26,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:12:26,986 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:12:26,987 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:12:26,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:12:26,987 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:12:26,988 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:12:26,989 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:12:27,025 INFO ]: Repository-Root is: /tmp [2018-06-26 18:12:27,040 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:12:27,043 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:12:27,045 INFO ]: Initializing SmtParser... [2018-06-26 18:12:27,045 INFO ]: SmtParser initialized [2018-06-26 18:12:27,046 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/027b-horn.smt2 [2018-06-26 18:12:27,047 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 [2018-06-26 18:12:27,137 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/027b-horn.smt2 unknown [2018-06-26 18:12:27,358 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/027b-horn.smt2 [2018-06-26 18:12:27,368 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:12:27,375 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:12:27,375 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:12:27,375 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:12:27,375 INFO ]: ChcToBoogie initialized [2018-06-26 18:12:27,379 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:12:27" (1/1) ... [2018-06-26 18:12:27,434 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27 Unit [2018-06-26 18:12:27,434 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:12:27,435 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:12:27,435 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:12:27,435 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:12:27,454 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27" (1/1) ... [2018-06-26 18:12:27,454 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27" (1/1) ... [2018-06-26 18:12:27,461 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27" (1/1) ... [2018-06-26 18:12:27,461 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27" (1/1) ... [2018-06-26 18:12:27,467 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27" (1/1) ... [2018-06-26 18:12:27,476 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27" (1/1) ... [2018-06-26 18:12:27,477 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27" (1/1) ... [2018-06-26 18:12:27,479 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:12:27,480 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:12:27,480 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:12:27,480 INFO ]: RCFGBuilder initialized [2018-06-26 18:12:27,490 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27" (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) [2018-06-26 18:12:27,507 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:12:27,507 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:12:27,507 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:12:27,507 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:12:27,507 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:12:27,507 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:12:27,862 INFO ]: Using library mode [2018-06-26 18:12:27,863 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:12:27 BoogieIcfgContainer [2018-06-26 18:12:27,863 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:12:27,863 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:12:27,863 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:12:27,864 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:12:27,865 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:12:27" (1/1) ... [2018-06-26 18:12:27,879 INFO ]: Initial Icfg 11 locations, 18 edges [2018-06-26 18:12:27,880 INFO ]: Using Remove infeasible edges [2018-06-26 18:12:27,881 INFO ]: Using Maximize final states [2018-06-26 18:12:27,881 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:12:27,882 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:12:27,883 INFO ]: Using Remove sink states [2018-06-26 18:12:27,884 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:12:27,884 INFO ]: Using Use SBE [2018-06-26 18:12:27,891 INFO ]: SBE split 0 edges [2018-06-26 18:12:27,897 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 18:12:27,898 INFO ]: 0 new accepting states [2018-06-26 18:12:27,963 INFO ]: Removed 6 edges and 2 locations by large block encoding [2018-06-26 18:12:27,964 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:12:27,966 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:12:27,966 INFO ]: 0 new accepting states [2018-06-26 18:12:27,966 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:12:27,966 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:12:27,967 INFO ]: Encoded RCFG 7 locations, 14 edges [2018-06-26 18:12:27,967 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:12:27 BasicIcfg [2018-06-26 18:12:27,967 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:12:27,969 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:12:27,969 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:12:27,971 INFO ]: TraceAbstraction initialized [2018-06-26 18:12:27,972 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:12:27" (1/4) ... [2018-06-26 18:12:27,972 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0d493d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:12:27, skipping insertion in model container [2018-06-26 18:12:27,972 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:12:27" (2/4) ... [2018-06-26 18:12:27,973 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0d493d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:12:27, skipping insertion in model container [2018-06-26 18:12:27,973 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:12:27" (3/4) ... [2018-06-26 18:12:27,973 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0d493d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:12:27, skipping insertion in model container [2018-06-26 18:12:27,973 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:12:27" (4/4) ... [2018-06-26 18:12:27,975 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:12:27,984 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:12:28,002 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:12:28,050 INFO ]: Using default assertion order modulation [2018-06-26 18:12:28,050 INFO ]: Interprodecural is true [2018-06-26 18:12:28,050 INFO ]: Hoare is false [2018-06-26 18:12:28,050 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:12:28,050 INFO ]: Backedges is TWOTRACK [2018-06-26 18:12:28,050 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:12:28,050 INFO ]: Difference is false [2018-06-26 18:12:28,051 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:12:28,051 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:12:28,065 INFO ]: Start isEmpty. Operand 7 states. [2018-06-26 18:12:28,083 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:12:28,083 INFO ]: Found error trace [2018-06-26 18:12:28,084 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:12:28,085 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:12:28,093 INFO ]: Analyzing trace with hash 36573309, now seen corresponding path program 1 times [2018-06-26 18:12:28,095 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:12:28,095 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:12:28,132 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:28,132 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:12:28,132 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:28,190 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:12:28,251 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:12:28,253 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:12:28,253 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:12:28,254 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:12:28,264 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:12:28,265 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:12:28,266 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-26 18:12:28,375 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:12:28,375 INFO ]: Finished difference Result 8 states and 19 transitions. [2018-06-26 18:12:28,376 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:12:28,377 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:12:28,377 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:12:28,384 INFO ]: With dead ends: 8 [2018-06-26 18:12:28,384 INFO ]: Without dead ends: 8 [2018-06-26 18:12:28,386 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 [2018-06-26 18:12:28,398 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 18:12:28,412 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 18:12:28,413 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 18:12:28,414 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2018-06-26 18:12:28,416 INFO ]: Start accepts. Automaton has 8 states and 19 transitions. Word has length 5 [2018-06-26 18:12:28,417 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:12:28,417 INFO ]: Abstraction has 8 states and 19 transitions. [2018-06-26 18:12:28,417 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:12:28,417 INFO ]: Start isEmpty. Operand 8 states and 19 transitions. [2018-06-26 18:12:28,417 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:12:28,417 INFO ]: Found error trace [2018-06-26 18:12:28,418 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:12:28,418 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:12:28,418 INFO ]: Analyzing trace with hash 36604061, now seen corresponding path program 1 times [2018-06-26 18:12:28,418 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:12:28,418 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:12:28,419 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:28,419 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:12:28,419 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:28,432 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:12:28,510 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:12:28,510 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:12:28,510 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:12:28,512 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:12:28,512 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:12:28,512 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:12:28,512 INFO ]: Start difference. First operand 8 states and 19 transitions. Second operand 3 states. [2018-06-26 18:12:28,549 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:12:28,549 INFO ]: Finished difference Result 9 states and 21 transitions. [2018-06-26 18:12:28,549 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:12:28,549 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:12:28,549 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:12:28,550 INFO ]: With dead ends: 9 [2018-06-26 18:12:28,550 INFO ]: Without dead ends: 9 [2018-06-26 18:12:28,550 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 [2018-06-26 18:12:28,550 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 18:12:28,552 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-26 18:12:28,552 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 18:12:28,552 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 21 transitions. [2018-06-26 18:12:28,552 INFO ]: Start accepts. Automaton has 9 states and 21 transitions. Word has length 5 [2018-06-26 18:12:28,552 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:12:28,553 INFO ]: Abstraction has 9 states and 21 transitions. [2018-06-26 18:12:28,553 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:12:28,553 INFO ]: Start isEmpty. Operand 9 states and 21 transitions. [2018-06-26 18:12:28,553 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:12:28,553 INFO ]: Found error trace [2018-06-26 18:12:28,553 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:12:28,553 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:12:28,553 INFO ]: Analyzing trace with hash 1133507720, now seen corresponding path program 1 times [2018-06-26 18:12:28,553 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:12:28,553 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:12:28,554 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:28,554 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:12:28,554 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:28,577 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:12:28,660 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:12:28,660 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:12:28,661 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-26 18:12:28,680 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 18:12:28,715 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:12:28,722 INFO ]: Computing forward predicates... [2018-06-26 18:12:28,894 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:12:28,921 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:12:28,921 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-26 18:12:28,921 INFO ]: Interpolant automaton has 5 states [2018-06-26 18:12:28,921 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 18:12:28,921 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:12:28,922 INFO ]: Start difference. First operand 9 states and 21 transitions. Second operand 5 states. [2018-06-26 18:12:29,187 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:12:29,187 INFO ]: Finished difference Result 13 states and 39 transitions. [2018-06-26 18:12:29,189 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 18:12:29,189 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-26 18:12:29,189 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:12:29,189 INFO ]: With dead ends: 13 [2018-06-26 18:12:29,189 INFO ]: Without dead ends: 10 [2018-06-26 18:12:29,190 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:12:29,190 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 18:12:29,191 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-26 18:12:29,191 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 18:12:29,191 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2018-06-26 18:12:29,191 INFO ]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 6 [2018-06-26 18:12:29,192 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:12:29,192 INFO ]: Abstraction has 9 states and 15 transitions. [2018-06-26 18:12:29,192 INFO ]: Interpolant automaton has 5 states. [2018-06-26 18:12:29,192 INFO ]: Start isEmpty. Operand 9 states and 15 transitions. [2018-06-26 18:12:29,192 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:12:29,192 INFO ]: Found error trace [2018-06-26 18:12:29,192 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:12:29,192 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:12:29,192 INFO ]: Analyzing trace with hash 1133597093, now seen corresponding path program 1 times [2018-06-26 18:12:29,192 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:12:29,192 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:12:29,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:29,195 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:12:29,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:29,208 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:12:29,253 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:12:29,253 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:12:29,253 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 [2018-06-26 18:12:29,260 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:12:29,309 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:12:29,310 INFO ]: Computing forward predicates... [2018-06-26 18:12:29,366 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:12:29,384 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:12:29,385 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-26 18:12:29,385 INFO ]: Interpolant automaton has 5 states [2018-06-26 18:12:29,385 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 18:12:29,385 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:12:29,385 INFO ]: Start difference. First operand 9 states and 15 transitions. Second operand 5 states. [2018-06-26 18:12:29,457 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:12:29,457 INFO ]: Finished difference Result 9 states and 13 transitions. [2018-06-26 18:12:29,457 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 18:12:29,457 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-26 18:12:29,457 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:12:29,457 INFO ]: With dead ends: 9 [2018-06-26 18:12:29,457 INFO ]: Without dead ends: 7 [2018-06-26 18:12:29,457 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:12:29,457 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 18:12:29,458 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 18:12:29,458 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 18:12:29,459 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-06-26 18:12:29,459 INFO ]: Start accepts. Automaton has 7 states and 9 transitions. Word has length 6 [2018-06-26 18:12:29,459 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:12:29,459 INFO ]: Abstraction has 7 states and 9 transitions. [2018-06-26 18:12:29,459 INFO ]: Interpolant automaton has 5 states. [2018-06-26 18:12:29,459 INFO ]: Start isEmpty. Operand 7 states and 9 transitions. [2018-06-26 18:12:29,459 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:12:29,459 INFO ]: Found error trace [2018-06-26 18:12:29,459 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:12:29,459 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:12:29,459 INFO ]: Analyzing trace with hash 1134134292, now seen corresponding path program 1 times [2018-06-26 18:12:29,459 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:12:29,459 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:12:29,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:29,460 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:12:29,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:12:29,468 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:12:29,499 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:12:29,499 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:12:29,499 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:12:29,499 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:12:29,499 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:12:29,500 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:12:29,500 INFO ]: Start difference. First operand 7 states and 9 transitions. Second operand 3 states. [2018-06-26 18:12:29,526 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:12:29,526 INFO ]: Finished difference Result 4 states and 5 transitions. [2018-06-26 18:12:29,526 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:12:29,526 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 18:12:29,526 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:12:29,526 INFO ]: With dead ends: 4 [2018-06-26 18:12:29,527 INFO ]: Without dead ends: 0 [2018-06-26 18:12:29,527 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 [2018-06-26 18:12:29,527 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:12:29,527 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:12:29,527 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:12:29,527 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:12:29,527 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-06-26 18:12:29,527 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:12:29,527 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:12:29,527 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:12:29,527 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:12:29,527 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:12:29,529 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:12:29,531 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:12:29 BasicIcfg [2018-06-26 18:12:29,531 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:12:29,532 INFO ]: Toolchain (without parser) took 2163.81 ms. Allocated memory was 304.6 MB in the beginning and 325.6 MB in the end (delta: 21.0 MB). Free memory was 258.9 MB in the beginning and 286.2 MB in the end (delta: -27.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:12:29,533 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:12:29,534 INFO ]: ChcToBoogie took 59.21 ms. Allocated memory is still 304.6 MB. Free memory was 258.9 MB in the beginning and 256.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:12:29,534 INFO ]: Boogie Preprocessor took 44.79 ms. Allocated memory is still 304.6 MB. Free memory was 256.9 MB in the beginning and 254.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:12:29,535 INFO ]: RCFGBuilder took 382.97 ms. Allocated memory is still 304.6 MB. Free memory was 254.9 MB in the beginning and 242.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:12:29,536 INFO ]: BlockEncodingV2 took 104.04 ms. Allocated memory is still 304.6 MB. Free memory was 242.9 MB in the beginning and 239.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:12:29,536 INFO ]: TraceAbstraction took 1562.55 ms. Allocated memory was 304.6 MB in the beginning and 325.6 MB in the end (delta: 21.0 MB). Free memory was 238.9 MB in the beginning and 286.2 MB in the end (delta: -47.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:12:29,540 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 11 locations, 18 edges - StatisticsResult: Encoded RCFG 7 locations, 14 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.21 ms. Allocated memory is still 304.6 MB. Free memory was 258.9 MB in the beginning and 256.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 44.79 ms. Allocated memory is still 304.6 MB. Free memory was 256.9 MB in the beginning and 254.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 382.97 ms. Allocated memory is still 304.6 MB. Free memory was 254.9 MB in the beginning and 242.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 104.04 ms. Allocated memory is still 304.6 MB. Free memory was 242.9 MB in the beginning and 239.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1562.55 ms. Allocated memory was 304.6 MB in the beginning and 325.6 MB in the end (delta: 21.0 MB). Free memory was 238.9 MB in the beginning and 286.2 MB in the end (delta: -47.2 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 7 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 60 SDs, 0 SdLazy, 59 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 4 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 3/5 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/027b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-12-29-551.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/027b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-12-29-551.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/027b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-12-29-551.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/027b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-12-29-551.csv Received shutdown request...