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/mc91.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:23:07,514 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:23:07,515 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:23:07,527 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:23:07,527 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:23:07,528 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:23:07,529 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:23:07,531 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:23:07,532 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:23:07,533 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:23:07,534 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:23:07,534 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:23:07,536 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:23:07,537 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:23:07,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:23:07,538 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:23:07,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:23:07,542 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:23:07,543 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:23:07,544 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:23:07,545 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:23:07,548 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:23:07,548 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:23:07,548 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:23:07,549 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:23:07,550 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:23:07,551 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:23:07,551 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:23:07,553 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:23:07,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:23:07,553 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:23:07,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:23:07,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:23:07,555 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:23:07,556 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:23:07,556 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:23:07,570 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:23:07,570 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:23:07,570 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:23:07,571 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:23:07,571 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:23:07,572 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:23:07,572 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:23:07,572 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:23:07,572 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:23:07,573 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:23:07,573 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:23:07,573 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:23:07,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:23:07,574 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:23:07,574 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:23:07,574 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:23:07,574 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:23:07,574 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:23:07,574 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:23:07,575 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:23:07,575 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:23:07,576 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:23:07,576 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:23:07,611 INFO ]: Repository-Root is: /tmp [2018-06-24 21:23:07,627 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:23:07,633 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:23:07,634 INFO ]: Initializing SmtParser... [2018-06-24 21:23:07,634 INFO ]: SmtParser initialized [2018-06-24 21:23:07,635 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91.smt2 [2018-06-24 21:23:07,636 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:23:07,723 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91.smt2 unknown [2018-06-24 21:23:07,880 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91.smt2 [2018-06-24 21:23:07,888 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:23:07,896 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:23:07,896 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:23:07,896 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:23:07,896 INFO ]: ChcToBoogie initialized [2018-06-24 21:23:07,900 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:23:07" (1/1) ... [2018-06-24 21:23:07,953 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07 Unit [2018-06-24 21:23:07,953 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:23:07,956 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:23:07,956 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:23:07,957 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:23:07,974 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07" (1/1) ... [2018-06-24 21:23:07,974 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07" (1/1) ... [2018-06-24 21:23:07,978 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07" (1/1) ... [2018-06-24 21:23:07,978 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07" (1/1) ... [2018-06-24 21:23:07,981 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07" (1/1) ... [2018-06-24 21:23:07,983 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07" (1/1) ... [2018-06-24 21:23:07,984 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07" (1/1) ... [2018-06-24 21:23:07,985 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:23:07,986 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:23:07,986 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:23:07,986 INFO ]: RCFGBuilder initialized [2018-06-24 21:23:07,987 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:23:07,998 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:23:07,998 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:23:07,998 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:23:07,999 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:23:07,999 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:23:07,999 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:23:08,218 INFO ]: Using library mode [2018-06-24 21:23:08,218 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:08 BoogieIcfgContainer [2018-06-24 21:23:08,218 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:23:08,220 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:23:08,220 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:23:08,221 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:23:08,222 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:08" (1/1) ... [2018-06-24 21:23:08,247 INFO ]: Initial Icfg 13 locations, 16 edges [2018-06-24 21:23:08,250 INFO ]: Using Remove infeasible edges [2018-06-24 21:23:08,250 INFO ]: Using Maximize final states [2018-06-24 21:23:08,251 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:23:08,251 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:23:08,254 INFO ]: Using Remove sink states [2018-06-24 21:23:08,255 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:23:08,255 INFO ]: Using Use SBE [2018-06-24 21:23:08,263 INFO ]: SBE split 0 edges [2018-06-24 21:23:08,268 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:23:08,269 INFO ]: 0 new accepting states [2018-06-24 21:23:08,294 INFO ]: Removed 7 edges and 3 locations by large block encoding [2018-06-24 21:23:08,296 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:23:08,300 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:23:08,300 INFO ]: 0 new accepting states [2018-06-24 21:23:08,300 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:23:08,300 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:23:08,301 INFO ]: Encoded RCFG 8 locations, 10 edges [2018-06-24 21:23:08,301 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:23:08 BasicIcfg [2018-06-24 21:23:08,301 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:23:08,302 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:23:08,302 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:23:08,306 INFO ]: TraceAbstraction initialized [2018-06-24 21:23:08,306 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:23:07" (1/4) ... [2018-06-24 21:23:08,307 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272a5846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:23:08, skipping insertion in model container [2018-06-24 21:23:08,307 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:23:07" (2/4) ... [2018-06-24 21:23:08,307 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272a5846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:23:08, skipping insertion in model container [2018-06-24 21:23:08,307 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:23:08" (3/4) ... [2018-06-24 21:23:08,308 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272a5846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:23:08, skipping insertion in model container [2018-06-24 21:23:08,308 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:23:08" (4/4) ... [2018-06-24 21:23:08,310 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:23:08,319 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:23:08,334 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:23:08,374 INFO ]: Using default assertion order modulation [2018-06-24 21:23:08,375 INFO ]: Interprodecural is true [2018-06-24 21:23:08,375 INFO ]: Hoare is false [2018-06-24 21:23:08,375 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:23:08,375 INFO ]: Backedges is TWOTRACK [2018-06-24 21:23:08,375 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:23:08,375 INFO ]: Difference is false [2018-06-24 21:23:08,375 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:23:08,375 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:23:08,384 INFO ]: Start isEmpty. Operand 8 states. [2018-06-24 21:23:08,393 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:23:08,393 INFO ]: Found error trace [2018-06-24 21:23:08,394 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:23:08,394 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:08,399 INFO ]: Analyzing trace with hash 33771907, now seen corresponding path program 1 times [2018-06-24 21:23:08,401 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:08,401 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:08,437 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:08,437 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:08,437 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:08,471 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:08,526 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:23:08,527 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:23:08,527 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:23:08,529 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:23:08,539 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:23:08,540 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:08,542 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-24 21:23:08,632 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:08,632 INFO ]: Finished difference Result 13 states and 17 transitions. [2018-06-24 21:23:08,633 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:23:08,634 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:23:08,634 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:08,642 INFO ]: With dead ends: 13 [2018-06-24 21:23:08,642 INFO ]: Without dead ends: 13 [2018-06-24 21:23:08,643 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:08,657 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:23:08,690 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-24 21:23:08,692 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:23:08,693 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-06-24 21:23:08,695 INFO ]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 5 [2018-06-24 21:23:08,696 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:08,696 INFO ]: Abstraction has 13 states and 17 transitions. [2018-06-24 21:23:08,696 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:23:08,696 INFO ]: Start isEmpty. Operand 13 states and 17 transitions. [2018-06-24 21:23:08,697 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:23:08,697 INFO ]: Found error trace [2018-06-24 21:23:08,697 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:23:08,697 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:08,697 INFO ]: Analyzing trace with hash 33801698, now seen corresponding path program 1 times [2018-06-24 21:23:08,697 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:08,697 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:08,701 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:08,702 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:08,702 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:08,712 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:08,766 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:23:08,766 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:23:08,766 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:23:08,768 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:23:08,768 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:23:08,768 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:08,768 INFO ]: Start difference. First operand 13 states and 17 transitions. Second operand 3 states. [2018-06-24 21:23:08,814 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:08,814 INFO ]: Finished difference Result 15 states and 19 transitions. [2018-06-24 21:23:08,815 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:23:08,815 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:23:08,815 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:08,816 INFO ]: With dead ends: 15 [2018-06-24 21:23:08,816 INFO ]: Without dead ends: 15 [2018-06-24 21:23:08,816 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:23:08,817 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-24 21:23:08,820 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-24 21:23:08,820 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:23:08,822 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2018-06-24 21:23:08,822 INFO ]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 5 [2018-06-24 21:23:08,822 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:08,822 INFO ]: Abstraction has 15 states and 19 transitions. [2018-06-24 21:23:08,822 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:23:08,822 INFO ]: Start isEmpty. Operand 15 states and 19 transitions. [2018-06-24 21:23:08,822 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:23:08,822 INFO ]: Found error trace [2018-06-24 21:23:08,823 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:23:08,823 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:08,823 INFO ]: Analyzing trace with hash 695440575, now seen corresponding path program 1 times [2018-06-24 21:23:08,823 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:08,823 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:08,824 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:08,824 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:08,824 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:08,839 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:09,166 INFO ]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:23:09,166 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:09,166 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:09,174 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:09,199 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:09,208 INFO ]: Computing forward predicates... [2018-06-24 21:23:09,709 INFO ]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:23:09,731 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:09,732 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-24 21:23:09,732 INFO ]: Interpolant automaton has 12 states [2018-06-24 21:23:09,732 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-24 21:23:09,732 INFO ]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:23:09,732 INFO ]: Start difference. First operand 15 states and 19 transitions. Second operand 12 states. [2018-06-24 21:23:10,569 WARN ]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-24 21:23:10,655 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:10,656 INFO ]: Finished difference Result 33 states and 49 transitions. [2018-06-24 21:23:10,656 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:23:10,656 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-24 21:23:10,656 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:10,659 INFO ]: With dead ends: 33 [2018-06-24 21:23:10,659 INFO ]: Without dead ends: 33 [2018-06-24 21:23:10,659 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-06-24 21:23:10,659 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-24 21:23:10,666 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 21. [2018-06-24 21:23:10,666 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-24 21:23:10,667 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2018-06-24 21:23:10,667 INFO ]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 11 [2018-06-24 21:23:10,667 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:10,667 INFO ]: Abstraction has 21 states and 31 transitions. [2018-06-24 21:23:10,667 INFO ]: Interpolant automaton has 12 states. [2018-06-24 21:23:10,667 INFO ]: Start isEmpty. Operand 21 states and 31 transitions. [2018-06-24 21:23:10,668 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:23:10,668 INFO ]: Found error trace [2018-06-24 21:23:10,669 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-06-24 21:23:10,669 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:10,669 INFO ]: Analyzing trace with hash 107953538, now seen corresponding path program 2 times [2018-06-24 21:23:10,669 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:10,669 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:10,670 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:10,670 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:10,670 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:10,690 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:10,874 INFO ]: Checked inductivity of 18 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:23:10,874 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:10,874 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:10,882 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:23:10,899 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:23:10,900 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:10,902 INFO ]: Computing forward predicates... [2018-06-24 21:23:11,064 INFO ]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:23:11,083 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:11,083 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2018-06-24 21:23:11,083 INFO ]: Interpolant automaton has 15 states [2018-06-24 21:23:11,083 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-24 21:23:11,083 INFO ]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-06-24 21:23:11,083 INFO ]: Start difference. First operand 21 states and 31 transitions. Second operand 15 states. [2018-06-24 21:23:11,498 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:11,527 INFO ]: Finished difference Result 41 states and 73 transitions. [2018-06-24 21:23:11,528 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-24 21:23:11,528 INFO ]: Start accepts. Automaton has 15 states. Word has length 17 [2018-06-24 21:23:11,528 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:11,531 INFO ]: With dead ends: 41 [2018-06-24 21:23:11,531 INFO ]: Without dead ends: 41 [2018-06-24 21:23:11,531 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2018-06-24 21:23:11,531 INFO ]: Start minimizeSevpa. Operand 41 states. [2018-06-24 21:23:11,548 INFO ]: Finished minimizeSevpa. Reduced states from 41 to 33. [2018-06-24 21:23:11,548 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-24 21:23:11,551 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 60 transitions. [2018-06-24 21:23:11,551 INFO ]: Start accepts. Automaton has 33 states and 60 transitions. Word has length 17 [2018-06-24 21:23:11,551 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:11,551 INFO ]: Abstraction has 33 states and 60 transitions. [2018-06-24 21:23:11,551 INFO ]: Interpolant automaton has 15 states. [2018-06-24 21:23:11,551 INFO ]: Start isEmpty. Operand 33 states and 60 transitions. [2018-06-24 21:23:11,555 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-24 21:23:11,555 INFO ]: Found error trace [2018-06-24 21:23:11,555 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2018-06-24 21:23:11,555 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:11,555 INFO ]: Analyzing trace with hash 1567361029, now seen corresponding path program 3 times [2018-06-24 21:23:11,555 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:11,555 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:11,556 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:11,556 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:11,556 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:11,575 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:11,660 INFO ]: Checked inductivity of 39 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-24 21:23:11,661 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:11,661 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:11,675 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:23:11,712 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-24 21:23:11,712 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:11,715 INFO ]: Computing forward predicates... [2018-06-24 21:23:11,841 INFO ]: Checked inductivity of 39 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-24 21:23:11,861 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:11,861 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2018-06-24 21:23:11,862 INFO ]: Interpolant automaton has 17 states [2018-06-24 21:23:11,862 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-24 21:23:11,862 INFO ]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-06-24 21:23:11,862 INFO ]: Start difference. First operand 33 states and 60 transitions. Second operand 17 states. [2018-06-24 21:23:14,011 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:14,011 INFO ]: Finished difference Result 136 states and 378 transitions. [2018-06-24 21:23:14,013 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-06-24 21:23:14,013 INFO ]: Start accepts. Automaton has 17 states. Word has length 23 [2018-06-24 21:23:14,013 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:14,028 INFO ]: With dead ends: 136 [2018-06-24 21:23:14,028 INFO ]: Without dead ends: 128 [2018-06-24 21:23:14,032 INFO ]: 0 DeclaredPredicates, 92 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=615, Invalid=3545, Unknown=0, NotChecked=0, Total=4160 [2018-06-24 21:23:14,032 INFO ]: Start minimizeSevpa. Operand 128 states. [2018-06-24 21:23:14,122 INFO ]: Finished minimizeSevpa. Reduced states from 128 to 64. [2018-06-24 21:23:14,122 INFO ]: Start removeUnreachable. Operand 64 states. [2018-06-24 21:23:14,129 INFO ]: Finished removeUnreachable. Reduced from 64 states to 64 states and 125 transitions. [2018-06-24 21:23:14,129 INFO ]: Start accepts. Automaton has 64 states and 125 transitions. Word has length 23 [2018-06-24 21:23:14,129 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:14,129 INFO ]: Abstraction has 64 states and 125 transitions. [2018-06-24 21:23:14,129 INFO ]: Interpolant automaton has 17 states. [2018-06-24 21:23:14,129 INFO ]: Start isEmpty. Operand 64 states and 125 transitions. [2018-06-24 21:23:14,130 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-24 21:23:14,130 INFO ]: Found error trace [2018-06-24 21:23:14,130 INFO ]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2018-06-24 21:23:14,131 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:14,132 INFO ]: Analyzing trace with hash 366484540, now seen corresponding path program 4 times [2018-06-24 21:23:14,132 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:14,132 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:14,133 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:14,133 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:14,133 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:14,155 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:14,358 INFO ]: Checked inductivity of 68 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-24 21:23:14,359 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:14,359 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) [2018-06-24 21:23:14,373 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:14,402 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-24 21:23:14,402 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:14,405 INFO ]: Computing forward predicates... [2018-06-24 21:23:14,702 INFO ]: Checked inductivity of 68 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-24 21:23:14,730 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:14,730 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 28 [2018-06-24 21:23:14,730 INFO ]: Interpolant automaton has 28 states [2018-06-24 21:23:14,730 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-24 21:23:14,730 INFO ]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2018-06-24 21:23:14,731 INFO ]: Start difference. First operand 64 states and 125 transitions. Second operand 28 states. [2018-06-24 21:23:15,257 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:15,257 INFO ]: Finished difference Result 133 states and 331 transitions. [2018-06-24 21:23:15,260 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-24 21:23:15,260 INFO ]: Start accepts. Automaton has 28 states. Word has length 29 [2018-06-24 21:23:15,260 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:15,271 INFO ]: With dead ends: 133 [2018-06-24 21:23:15,271 INFO ]: Without dead ends: 133 [2018-06-24 21:23:15,272 INFO ]: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=245, Invalid=1477, Unknown=0, NotChecked=0, Total=1722 [2018-06-24 21:23:15,272 INFO ]: Start minimizeSevpa. Operand 133 states. [2018-06-24 21:23:15,300 INFO ]: Finished minimizeSevpa. Reduced states from 133 to 68. [2018-06-24 21:23:15,300 INFO ]: Start removeUnreachable. Operand 68 states. [2018-06-24 21:23:15,307 INFO ]: Finished removeUnreachable. Reduced from 68 states to 68 states and 146 transitions. [2018-06-24 21:23:15,307 INFO ]: Start accepts. Automaton has 68 states and 146 transitions. Word has length 29 [2018-06-24 21:23:15,307 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:15,307 INFO ]: Abstraction has 68 states and 146 transitions. [2018-06-24 21:23:15,307 INFO ]: Interpolant automaton has 28 states. [2018-06-24 21:23:15,307 INFO ]: Start isEmpty. Operand 68 states and 146 transitions. [2018-06-24 21:23:15,319 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-24 21:23:15,319 INFO ]: Found error trace [2018-06-24 21:23:15,319 INFO ]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2018-06-24 21:23:15,319 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:15,319 INFO ]: Analyzing trace with hash 623916287, now seen corresponding path program 5 times [2018-06-24 21:23:15,319 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:15,319 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:15,320 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:15,320 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:15,320 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:15,353 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:15,621 INFO ]: Checked inductivity of 105 backedges. 40 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-24 21:23:15,621 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:15,622 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 21:23:15,628 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-24 21:23:15,663 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-24 21:23:15,664 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:15,668 INFO ]: Computing forward predicates... [2018-06-24 21:23:16,018 INFO ]: Checked inductivity of 105 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-24 21:23:16,038 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:16,038 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21] total 31 [2018-06-24 21:23:16,038 INFO ]: Interpolant automaton has 31 states [2018-06-24 21:23:16,039 INFO ]: Constructing interpolant automaton starting with 31 interpolants. [2018-06-24 21:23:16,039 INFO ]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2018-06-24 21:23:16,039 INFO ]: Start difference. First operand 68 states and 146 transitions. Second operand 31 states. [2018-06-24 21:23:17,194 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:17,194 INFO ]: Finished difference Result 64 states and 103 transitions. [2018-06-24 21:23:17,197 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-06-24 21:23:17,197 INFO ]: Start accepts. Automaton has 31 states. Word has length 35 [2018-06-24 21:23:17,197 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:17,197 INFO ]: With dead ends: 64 [2018-06-24 21:23:17,197 INFO ]: Without dead ends: 0 [2018-06-24 21:23:17,198 INFO ]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=383, Invalid=2923, Unknown=0, NotChecked=0, Total=3306 [2018-06-24 21:23:17,198 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:23:17,198 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:23:17,198 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:23:17,198 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:23:17,198 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-06-24 21:23:17,198 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:17,198 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:23:17,198 INFO ]: Interpolant automaton has 31 states. [2018-06-24 21:23:17,198 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:23:17,198 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:23:17,200 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:23:17,201 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:23:17 BasicIcfg [2018-06-24 21:23:17,201 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:23:17,202 INFO ]: Toolchain (without parser) took 9313.51 ms. Allocated memory was 308.3 MB in the beginning and 412.6 MB in the end (delta: 104.3 MB). Free memory was 263.6 MB in the beginning and 284.8 MB in the end (delta: -21.2 MB). Peak memory consumption was 83.2 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:17,203 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:23:17,203 INFO ]: ChcToBoogie took 59.87 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:17,204 INFO ]: Boogie Preprocessor took 28.75 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 259.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:17,204 INFO ]: RCFGBuilder took 232.81 ms. Allocated memory is still 308.3 MB. Free memory was 259.6 MB in the beginning and 252.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:17,205 INFO ]: BlockEncodingV2 took 80.93 ms. Allocated memory is still 308.3 MB. Free memory was 252.6 MB in the beginning and 249.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:17,205 INFO ]: TraceAbstraction took 8899.25 ms. Allocated memory was 308.3 MB in the beginning and 412.6 MB in the end (delta: 104.3 MB). Free memory was 249.6 MB in the beginning and 284.8 MB in the end (delta: -35.2 MB). Peak memory consumption was 69.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:17,209 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 16 edges - StatisticsResult: Encoded RCFG 8 locations, 10 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.87 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 28.75 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 259.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 232.81 ms. Allocated memory is still 308.3 MB. Free memory was 259.6 MB in the beginning and 252.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 80.93 ms. Allocated memory is still 308.3 MB. Free memory was 252.6 MB in the beginning and 249.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 8899.25 ms. Allocated memory was 308.3 MB in the beginning and 412.6 MB in the end (delta: 104.3 MB). Free memory was 249.6 MB in the beginning and 284.8 MB in the end (delta: -35.2 MB). Peak memory consumption was 69.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 8 locations, 1 error locations. SAFE Result, 8.8s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 5.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 103 SDslu, 264 SDs, 0 SdLazy, 2610 SolverSat, 296 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=6, 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: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 149 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 240 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 23936 SizeOfPredicates, 78 NumberOfNonLiveVariables, 597 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 265/470 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/mc91.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-23-17-222.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-23-17-222.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-23-17-222.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-23-17-222.csv Received shutdown request...