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/enc-zip4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:16:04,454 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:16:04,458 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:16:04,471 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:16:04,472 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:16:04,473 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:16:04,476 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:16:04,478 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:16:04,480 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:16:04,480 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:16:04,483 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:16:04,483 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:16:04,484 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:16:04,485 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:16:04,485 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:16:04,489 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:16:04,491 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:16:04,504 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:16:04,506 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:16:04,507 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:16:04,508 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:16:04,510 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:16:04,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:16:04,510 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:16:04,511 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:16:04,512 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:16:04,512 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:16:04,518 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:16:04,519 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:16:04,519 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:16:04,520 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:16:04,520 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:16:04,520 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:16:04,525 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:16:04,526 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:16:04,526 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:16:04,547 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:16:04,548 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:16:04,548 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:16:04,548 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:16:04,549 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:16:04,549 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:16:04,550 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:16:04,550 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:16:04,550 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:16:04,550 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:16:04,551 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:16:04,551 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:16:04,551 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:16:04,551 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:16:04,551 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:16:04,552 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:16:04,552 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:16:04,552 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:16:04,552 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:16:04,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:16:04,553 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:16:04,554 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:16:04,554 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:16:04,601 INFO ]: Repository-Root is: /tmp [2018-06-24 21:16:04,620 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:16:04,623 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:16:04,626 INFO ]: Initializing SmtParser... [2018-06-24 21:16:04,626 INFO ]: SmtParser initialized [2018-06-24 21:16:04,627 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/enc-zip4.smt2 [2018-06-24 21:16:04,628 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 21:16:04,721 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip4.smt2 unknown [2018-06-24 21:16:04,923 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip4.smt2 [2018-06-24 21:16:04,927 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:16:04,936 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:16:04,937 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:16:04,937 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:16:04,937 INFO ]: ChcToBoogie initialized [2018-06-24 21:16:04,941 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:16:04" (1/1) ... [2018-06-24 21:16:04,999 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04 Unit [2018-06-24 21:16:05,000 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:16:05,000 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:16:05,000 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:16:05,000 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:16:05,021 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04" (1/1) ... [2018-06-24 21:16:05,021 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04" (1/1) ... [2018-06-24 21:16:05,026 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04" (1/1) ... [2018-06-24 21:16:05,027 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04" (1/1) ... [2018-06-24 21:16:05,030 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04" (1/1) ... [2018-06-24 21:16:05,033 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04" (1/1) ... [2018-06-24 21:16:05,034 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04" (1/1) ... [2018-06-24 21:16:05,035 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:16:05,036 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:16:05,036 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:16:05,036 INFO ]: RCFGBuilder initialized [2018-06-24 21:16:05,037 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04" (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 21:16:05,054 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:16:05,054 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:16:05,054 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:16:05,054 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:16:05,054 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:16:05,054 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 21:16:05,355 INFO ]: Using library mode [2018-06-24 21:16:05,355 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:16:05 BoogieIcfgContainer [2018-06-24 21:16:05,355 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:16:05,356 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:16:05,356 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:16:05,357 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:16:05,357 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:16:05" (1/1) ... [2018-06-24 21:16:05,377 INFO ]: Initial Icfg 14 locations, 20 edges [2018-06-24 21:16:05,379 INFO ]: Using Remove infeasible edges [2018-06-24 21:16:05,379 INFO ]: Using Maximize final states [2018-06-24 21:16:05,380 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:16:05,385 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:16:05,389 INFO ]: Using Remove sink states [2018-06-24 21:16:05,393 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:16:05,393 INFO ]: Using Use SBE [2018-06-24 21:16:05,422 INFO ]: SBE split 1 edges [2018-06-24 21:16:05,426 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:16:05,428 INFO ]: 0 new accepting states [2018-06-24 21:16:05,485 INFO ]: Removed 11 edges and 3 locations by large block encoding [2018-06-24 21:16:05,487 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:16:05,488 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-24 21:16:05,488 INFO ]: 0 new accepting states [2018-06-24 21:16:05,489 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:16:05,489 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:16:05,489 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:16:05,489 INFO ]: 0 new accepting states [2018-06-24 21:16:05,489 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:16:05,490 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:16:05,490 INFO ]: Encoded RCFG 9 locations, 15 edges [2018-06-24 21:16:05,490 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:16:05 BasicIcfg [2018-06-24 21:16:05,490 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:16:05,491 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:16:05,492 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:16:05,494 INFO ]: TraceAbstraction initialized [2018-06-24 21:16:05,495 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:16:04" (1/4) ... [2018-06-24 21:16:05,495 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dadc569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:16:05, skipping insertion in model container [2018-06-24 21:16:05,496 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:16:04" (2/4) ... [2018-06-24 21:16:05,496 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dadc569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:16:05, skipping insertion in model container [2018-06-24 21:16:05,496 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:16:05" (3/4) ... [2018-06-24 21:16:05,496 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dadc569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:16:05, skipping insertion in model container [2018-06-24 21:16:05,496 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:16:05" (4/4) ... [2018-06-24 21:16:05,500 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:16:05,506 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:16:05,512 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:16:05,554 INFO ]: Using default assertion order modulation [2018-06-24 21:16:05,554 INFO ]: Interprodecural is true [2018-06-24 21:16:05,554 INFO ]: Hoare is false [2018-06-24 21:16:05,554 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:16:05,554 INFO ]: Backedges is TWOTRACK [2018-06-24 21:16:05,554 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:16:05,554 INFO ]: Difference is false [2018-06-24 21:16:05,554 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:16:05,555 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:16:05,565 INFO ]: Start isEmpty. Operand 9 states. [2018-06-24 21:16:05,576 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:16:05,576 INFO ]: Found error trace [2018-06-24 21:16:05,577 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:16:05,577 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:05,582 INFO ]: Analyzing trace with hash 35927589, now seen corresponding path program 1 times [2018-06-24 21:16:05,584 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:05,584 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:05,620 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:05,620 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:05,620 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:05,663 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:05,797 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:16:05,799 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:16:05,799 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:16:05,800 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:16:05,814 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:16:05,814 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:16:05,816 INFO ]: Start difference. First operand 9 states. Second operand 3 states. [2018-06-24 21:16:05,871 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:05,871 INFO ]: Finished difference Result 10 states and 16 transitions. [2018-06-24 21:16:05,871 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:16:05,872 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:16:05,873 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:05,882 INFO ]: With dead ends: 10 [2018-06-24 21:16:05,882 INFO ]: Without dead ends: 10 [2018-06-24 21:16:05,883 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 21:16:05,899 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:16:05,923 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-24 21:16:05,925 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 21:16:05,926 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-24 21:16:05,927 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 5 [2018-06-24 21:16:05,929 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:05,929 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-24 21:16:05,929 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:16:05,929 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-24 21:16:05,930 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:16:05,930 INFO ]: Found error trace [2018-06-24 21:16:05,930 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:16:05,931 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:05,931 INFO ]: Analyzing trace with hash 35957380, now seen corresponding path program 1 times [2018-06-24 21:16:05,931 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:05,931 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:05,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:05,932 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:05,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:05,940 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:06,267 WARN ]: Spent 277.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 7 [2018-06-24 21:16:06,267 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:16:06,267 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:16:06,268 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:16:06,269 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:16:06,269 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:16:06,269 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:16:06,269 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2018-06-24 21:16:06,340 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:06,341 INFO ]: Finished difference Result 11 states and 17 transitions. [2018-06-24 21:16:06,341 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:16:06,341 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:16:06,341 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:06,341 INFO ]: With dead ends: 11 [2018-06-24 21:16:06,341 INFO ]: Without dead ends: 11 [2018-06-24 21:16:06,342 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:16:06,342 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 21:16:06,344 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-06-24 21:16:06,344 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 21:16:06,344 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-24 21:16:06,345 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 5 [2018-06-24 21:16:06,345 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:06,345 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-24 21:16:06,345 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:16:06,345 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-24 21:16:06,345 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:16:06,345 INFO ]: Found error trace [2018-06-24 21:16:06,345 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:16:06,345 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:06,345 INFO ]: Analyzing trace with hash 1110429377, now seen corresponding path program 1 times [2018-06-24 21:16:06,345 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:06,345 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:06,346 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:06,346 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:06,346 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:06,354 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:06,374 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:16:06,374 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:16:06,374 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:16:06,374 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:16:06,374 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:16:06,374 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:16:06,375 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2018-06-24 21:16:06,500 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:06,500 INFO ]: Finished difference Result 17 states and 29 transitions. [2018-06-24 21:16:06,500 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:16:06,500 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 21:16:06,501 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:06,501 INFO ]: With dead ends: 17 [2018-06-24 21:16:06,501 INFO ]: Without dead ends: 17 [2018-06-24 21:16:06,502 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 21:16:06,502 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-24 21:16:06,506 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-24 21:16:06,506 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-24 21:16:06,506 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 29 transitions. [2018-06-24 21:16:06,507 INFO ]: Start accepts. Automaton has 17 states and 29 transitions. Word has length 6 [2018-06-24 21:16:06,508 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:06,508 INFO ]: Abstraction has 17 states and 29 transitions. [2018-06-24 21:16:06,509 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:16:06,509 INFO ]: Start isEmpty. Operand 17 states and 29 transitions. [2018-06-24 21:16:06,510 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:16:06,510 INFO ]: Found error trace [2018-06-24 21:16:06,510 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:16:06,510 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:06,510 INFO ]: Analyzing trace with hash 1112276419, now seen corresponding path program 1 times [2018-06-24 21:16:06,510 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:06,510 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:06,511 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:06,511 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:06,511 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:06,523 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:06,597 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:16:06,598 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:16:06,598 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:16:06,598 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:16:06,598 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:16:06,598 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:16:06,598 INFO ]: Start difference. First operand 17 states and 29 transitions. Second operand 3 states. [2018-06-24 21:16:06,683 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:06,683 INFO ]: Finished difference Result 27 states and 46 transitions. [2018-06-24 21:16:06,683 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:16:06,683 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 21:16:06,683 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:06,686 INFO ]: With dead ends: 27 [2018-06-24 21:16:06,686 INFO ]: Without dead ends: 27 [2018-06-24 21:16:06,686 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 21:16:06,687 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-24 21:16:06,692 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-06-24 21:16:06,692 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-24 21:16:06,693 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2018-06-24 21:16:06,693 INFO ]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 6 [2018-06-24 21:16:06,693 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:06,693 INFO ]: Abstraction has 19 states and 31 transitions. [2018-06-24 21:16:06,693 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:16:06,693 INFO ]: Start isEmpty. Operand 19 states and 31 transitions. [2018-06-24 21:16:06,694 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:16:06,694 INFO ]: Found error trace [2018-06-24 21:16:06,694 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:16:06,694 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:06,694 INFO ]: Analyzing trace with hash 1112902030, now seen corresponding path program 1 times [2018-06-24 21:16:06,694 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:06,694 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:06,695 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:06,695 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:06,695 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:06,705 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:06,758 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:16:06,758 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:16:06,758 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 21:16:06,767 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:06,780 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:06,786 INFO ]: Computing forward predicates... [2018-06-24 21:16:06,838 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:16:06,860 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:16:06,860 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-24 21:16:06,860 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:16:06,861 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:16:06,861 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:16:06,861 INFO ]: Start difference. First operand 19 states and 31 transitions. Second operand 5 states. [2018-06-24 21:16:06,893 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:06,893 INFO ]: Finished difference Result 25 states and 37 transitions. [2018-06-24 21:16:06,893 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:16:06,893 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:16:06,893 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:06,894 INFO ]: With dead ends: 25 [2018-06-24 21:16:06,894 INFO ]: Without dead ends: 17 [2018-06-24 21:16:06,894 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:16:06,894 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-24 21:16:06,897 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-24 21:16:06,897 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-24 21:16:06,898 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2018-06-24 21:16:06,898 INFO ]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 6 [2018-06-24 21:16:06,898 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:06,898 INFO ]: Abstraction has 17 states and 25 transitions. [2018-06-24 21:16:06,898 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:16:06,898 INFO ]: Start isEmpty. Operand 17 states and 25 transitions. [2018-06-24 21:16:06,899 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:16:06,899 INFO ]: Found error trace [2018-06-24 21:16:06,899 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:16:06,899 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:06,899 INFO ]: Analyzing trace with hash 1115046982, now seen corresponding path program 1 times [2018-06-24 21:16:06,899 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:06,899 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:06,900 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:06,900 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:06,900 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:06,907 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:06,947 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:16:06,947 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:16:06,947 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:16:06,947 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:16:06,947 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:16:06,947 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:16:06,947 INFO ]: Start difference. First operand 17 states and 25 transitions. Second operand 3 states. [2018-06-24 21:16:07,039 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:07,039 INFO ]: Finished difference Result 26 states and 40 transitions. [2018-06-24 21:16:07,041 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:16:07,041 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 21:16:07,041 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:07,042 INFO ]: With dead ends: 26 [2018-06-24 21:16:07,042 INFO ]: Without dead ends: 26 [2018-06-24 21:16:07,042 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 21:16:07,042 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-24 21:16:07,047 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 16. [2018-06-24 21:16:07,047 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-24 21:16:07,050 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2018-06-24 21:16:07,050 INFO ]: Start accepts. Automaton has 16 states and 23 transitions. Word has length 6 [2018-06-24 21:16:07,050 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:07,050 INFO ]: Abstraction has 16 states and 23 transitions. [2018-06-24 21:16:07,050 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:16:07,050 INFO ]: Start isEmpty. Operand 16 states and 23 transitions. [2018-06-24 21:16:07,051 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:16:07,051 INFO ]: Found error trace [2018-06-24 21:16:07,051 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:16:07,051 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:07,051 INFO ]: Analyzing trace with hash -1192431163, now seen corresponding path program 1 times [2018-06-24 21:16:07,051 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:07,051 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:07,052 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:07,052 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:07,052 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:07,079 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:07,158 INFO ]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:16:07,159 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:16:07,159 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 21:16:07,166 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:07,202 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:07,204 INFO ]: Computing forward predicates... [2018-06-24 21:16:07,518 INFO ]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:16:07,538 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:16:07,538 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-24 21:16:07,538 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:16:07,538 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:16:07,538 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:16:07,539 INFO ]: Start difference. First operand 16 states and 23 transitions. Second operand 8 states. [2018-06-24 21:16:08,334 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:08,334 INFO ]: Finished difference Result 35 states and 64 transitions. [2018-06-24 21:16:08,335 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-24 21:16:08,335 INFO ]: Start accepts. Automaton has 8 states. Word has length 12 [2018-06-24 21:16:08,335 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:08,336 INFO ]: With dead ends: 35 [2018-06-24 21:16:08,336 INFO ]: Without dead ends: 32 [2018-06-24 21:16:08,336 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:16:08,336 INFO ]: Start minimizeSevpa. Operand 32 states. [2018-06-24 21:16:08,346 INFO ]: Finished minimizeSevpa. Reduced states from 32 to 22. [2018-06-24 21:16:08,346 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-24 21:16:08,347 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2018-06-24 21:16:08,347 INFO ]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 12 [2018-06-24 21:16:08,347 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:08,347 INFO ]: Abstraction has 22 states and 32 transitions. [2018-06-24 21:16:08,347 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:16:08,347 INFO ]: Start isEmpty. Operand 22 states and 32 transitions. [2018-06-24 21:16:08,348 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-24 21:16:08,348 INFO ]: Found error trace [2018-06-24 21:16:08,348 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:16:08,348 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:08,348 INFO ]: Analyzing trace with hash 2006649352, now seen corresponding path program 1 times [2018-06-24 21:16:08,348 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:08,348 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:08,349 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:08,349 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:08,349 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:08,360 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:08,410 INFO ]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:16:08,411 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:16:08,411 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 21:16:08,422 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:08,438 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:08,440 INFO ]: Computing forward predicates... [2018-06-24 21:16:08,501 INFO ]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:16:08,520 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:16:08,521 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-24 21:16:08,521 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:16:08,521 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:16:08,521 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:16:08,521 INFO ]: Start difference. First operand 22 states and 32 transitions. Second operand 8 states. [2018-06-24 21:16:08,730 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:08,731 INFO ]: Finished difference Result 32 states and 53 transitions. [2018-06-24 21:16:08,731 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-24 21:16:08,731 INFO ]: Start accepts. Automaton has 8 states. Word has length 12 [2018-06-24 21:16:08,731 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:08,732 INFO ]: With dead ends: 32 [2018-06-24 21:16:08,732 INFO ]: Without dead ends: 32 [2018-06-24 21:16:08,732 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:16:08,732 INFO ]: Start minimizeSevpa. Operand 32 states. [2018-06-24 21:16:08,736 INFO ]: Finished minimizeSevpa. Reduced states from 32 to 19. [2018-06-24 21:16:08,737 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-24 21:16:08,737 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-06-24 21:16:08,737 INFO ]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 12 [2018-06-24 21:16:08,737 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:08,737 INFO ]: Abstraction has 19 states and 27 transitions. [2018-06-24 21:16:08,737 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:16:08,737 INFO ]: Start isEmpty. Operand 19 states and 27 transitions. [2018-06-24 21:16:08,738 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-24 21:16:08,738 INFO ]: Found error trace [2018-06-24 21:16:08,738 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-24 21:16:08,738 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:08,738 INFO ]: Analyzing trace with hash 1466971139, now seen corresponding path program 2 times [2018-06-24 21:16:08,738 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:08,738 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:08,739 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:08,739 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:16:08,739 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:08,753 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:08,857 INFO ]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-24 21:16:08,857 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:16:08,857 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:16:08,863 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:16:08,904 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:16:08,904 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:08,906 INFO ]: Computing forward predicates... [2018-06-24 21:16:09,056 INFO ]: Checked inductivity of 14 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:16:09,075 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:16:09,075 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-06-24 21:16:09,075 INFO ]: Interpolant automaton has 13 states [2018-06-24 21:16:09,075 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-24 21:16:09,075 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-24 21:16:09,075 INFO ]: Start difference. First operand 19 states and 27 transitions. Second operand 13 states. [2018-06-24 21:16:09,799 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:09,799 INFO ]: Finished difference Result 38 states and 65 transitions. [2018-06-24 21:16:09,799 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-24 21:16:09,799 INFO ]: Start accepts. Automaton has 13 states. Word has length 18 [2018-06-24 21:16:09,799 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:09,800 INFO ]: With dead ends: 38 [2018-06-24 21:16:09,800 INFO ]: Without dead ends: 38 [2018-06-24 21:16:09,801 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2018-06-24 21:16:09,801 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-24 21:16:09,809 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-06-24 21:16:09,809 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-24 21:16:09,810 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 39 transitions. [2018-06-24 21:16:09,810 INFO ]: Start accepts. Automaton has 26 states and 39 transitions. Word has length 18 [2018-06-24 21:16:09,810 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:09,810 INFO ]: Abstraction has 26 states and 39 transitions. [2018-06-24 21:16:09,810 INFO ]: Interpolant automaton has 13 states. [2018-06-24 21:16:09,810 INFO ]: Start isEmpty. Operand 26 states and 39 transitions. [2018-06-24 21:16:09,811 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-24 21:16:09,811 INFO ]: Found error trace [2018-06-24 21:16:09,812 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-06-24 21:16:09,812 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:16:09,812 INFO ]: Analyzing trace with hash 1231932934, now seen corresponding path program 2 times [2018-06-24 21:16:09,812 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:16:09,812 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:16:09,813 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:09,813 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:16:09,813 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:16:09,830 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:09,877 INFO ]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-24 21:16:09,877 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:16:09,877 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:16:09,884 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:16:09,902 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:16:09,902 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:16:09,904 INFO ]: Computing forward predicates... [2018-06-24 21:16:09,973 INFO ]: Checked inductivity of 14 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-24 21:16:09,993 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:16:09,993 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-06-24 21:16:09,994 INFO ]: Interpolant automaton has 13 states [2018-06-24 21:16:09,994 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-24 21:16:09,994 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-24 21:16:09,994 INFO ]: Start difference. First operand 26 states and 39 transitions. Second operand 13 states. [2018-06-24 21:16:10,270 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:16:10,270 INFO ]: Finished difference Result 21 states and 28 transitions. [2018-06-24 21:16:10,270 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-24 21:16:10,270 INFO ]: Start accepts. Automaton has 13 states. Word has length 18 [2018-06-24 21:16:10,270 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:16:10,270 INFO ]: With dead ends: 21 [2018-06-24 21:16:10,270 INFO ]: Without dead ends: 0 [2018-06-24 21:16:10,271 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2018-06-24 21:16:10,271 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:16:10,271 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:16:10,271 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:16:10,271 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:16:10,272 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-06-24 21:16:10,272 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:16:10,272 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:16:10,272 INFO ]: Interpolant automaton has 13 states. [2018-06-24 21:16:10,272 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:16:10,272 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:16:10,274 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:16:10,275 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:16:10 BasicIcfg [2018-06-24 21:16:10,275 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:16:10,276 INFO ]: Toolchain (without parser) took 5348.06 ms. Allocated memory was 307.8 MB in the beginning and 338.2 MB in the end (delta: 30.4 MB). Free memory was 264.3 MB in the beginning and 198.4 MB in the end (delta: 65.8 MB). Peak memory consumption was 96.3 MB. Max. memory is 3.6 GB. [2018-06-24 21:16:10,277 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:16:10,277 INFO ]: ChcToBoogie took 63.30 ms. Allocated memory is still 307.8 MB. Free memory was 263.3 MB in the beginning and 261.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:16:10,277 INFO ]: Boogie Preprocessor took 35.08 ms. Allocated memory is still 307.8 MB. Free memory was 261.3 MB in the beginning and 260.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:16:10,278 INFO ]: RCFGBuilder took 319.52 ms. Allocated memory is still 307.8 MB. Free memory was 260.3 MB in the beginning and 251.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:16:10,278 INFO ]: BlockEncodingV2 took 134.46 ms. Allocated memory is still 307.8 MB. Free memory was 251.3 MB in the beginning and 246.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:16:10,279 INFO ]: TraceAbstraction took 4783.43 ms. Allocated memory was 307.8 MB in the beginning and 338.2 MB in the end (delta: 30.4 MB). Free memory was 246.3 MB in the beginning and 198.4 MB in the end (delta: 47.9 MB). Peak memory consumption was 78.3 MB. Max. memory is 3.6 GB. [2018-06-24 21:16:10,283 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 14 locations, 20 edges - StatisticsResult: Encoded RCFG 9 locations, 15 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 63.30 ms. Allocated memory is still 307.8 MB. Free memory was 263.3 MB in the beginning and 261.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 35.08 ms. Allocated memory is still 307.8 MB. Free memory was 261.3 MB in the beginning and 260.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 319.52 ms. Allocated memory is still 307.8 MB. Free memory was 260.3 MB in the beginning and 251.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 134.46 ms. Allocated memory is still 307.8 MB. Free memory was 251.3 MB in the beginning and 246.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4783.43 ms. Allocated memory was 307.8 MB in the beginning and 338.2 MB in the end (delta: 30.4 MB). Free memory was 246.3 MB in the beginning and 198.4 MB in the end (delta: 47.9 MB). Peak memory consumption was 78.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 9 locations, 1 error locations. SAFE Result, 4.7s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 167 SDtfs, 182 SDslu, 299 SDs, 0 SdLazy, 511 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=9, 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, 10 MinimizatonAttempts, 54 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 6335 SizeOfPredicates, 34 NumberOfNonLiveVariables, 444 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 52/74 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/enc-zip4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-16-10-294.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-16-10-294.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-16-10-294.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-16-10-294.csv Received shutdown request...