java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.24.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:25:47,220 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:25:47,222 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:25:47,233 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:25:47,233 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:25:47,234 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:25:47,235 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:25:47,237 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:25:47,238 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:25:47,239 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:25:47,240 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:25:47,240 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:25:47,241 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:25:47,242 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:25:47,243 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:25:47,243 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:25:47,245 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:25:47,247 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:25:47,250 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:25:47,251 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:25:47,252 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:25:47,255 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:25:47,255 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:25:47,255 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:25:47,256 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:25:47,257 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:25:47,258 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:25:47,258 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:25:47,259 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:25:47,260 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:25:47,260 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:25:47,261 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:25:47,261 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:25:47,262 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:25:47,263 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:25:47,263 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:25:47,281 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:25:47,281 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:25:47,282 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:25:47,282 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:25:47,283 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:25:47,283 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:25:47,283 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:25:47,283 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:25:47,284 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:25:47,284 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:25:47,284 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:25:47,284 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:25:47,284 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:25:47,285 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:25:47,285 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:25:47,285 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:25:47,285 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:25:47,286 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:25:47,286 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:25:47,286 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:25:47,286 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:25:47,288 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:25:47,288 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:25:47,334 INFO ]: Repository-Root is: /tmp [2018-06-24 20:25:47,355 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:25:47,362 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:25:47,363 INFO ]: Initializing SmtParser... [2018-06-24 20:25:47,363 INFO ]: SmtParser initialized [2018-06-24 20:25:47,364 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.24.smt2 [2018-06-24 20:25:47,365 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 20:25:47,456 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.24.smt2 unknown [2018-06-24 20:25:47,968 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/fortune-half.24.smt2 [2018-06-24 20:25:47,973 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:25:47,979 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:25:47,979 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:25:47,979 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:25:47,980 INFO ]: ChcToBoogie initialized [2018-06-24 20:25:47,983 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:25:47" (1/1) ... [2018-06-24 20:25:48,131 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48 Unit [2018-06-24 20:25:48,131 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:25:48,141 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:25:48,141 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:25:48,141 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:25:48,179 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48" (1/1) ... [2018-06-24 20:25:48,179 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48" (1/1) ... [2018-06-24 20:25:48,213 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48" (1/1) ... [2018-06-24 20:25:48,214 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48" (1/1) ... [2018-06-24 20:25:48,236 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48" (1/1) ... [2018-06-24 20:25:48,242 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48" (1/1) ... [2018-06-24 20:25:48,246 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48" (1/1) ... [2018-06-24 20:25:48,250 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:25:48,251 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:25:48,251 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:25:48,251 INFO ]: RCFGBuilder initialized [2018-06-24 20:25:48,251 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48" (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 20:25:48,268 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:25:48,268 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:25:48,268 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:25:48,268 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:25:48,268 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:25:48,268 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 20:25:49,650 INFO ]: Using library mode [2018-06-24 20:25:49,651 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:25:49 BoogieIcfgContainer [2018-06-24 20:25:49,651 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:25:49,651 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:25:49,651 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:25:49,652 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:25:49,653 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:25:49" (1/1) ... [2018-06-24 20:25:49,703 INFO ]: Initial Icfg 144 locations, 278 edges [2018-06-24 20:25:49,708 INFO ]: Using Remove infeasible edges [2018-06-24 20:25:49,708 INFO ]: Using Maximize final states [2018-06-24 20:25:49,709 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:25:49,709 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:25:49,713 INFO ]: Using Remove sink states [2018-06-24 20:25:49,714 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:25:49,714 INFO ]: Using Use SBE [2018-06-24 20:25:49,734 INFO ]: SBE split 0 edges [2018-06-24 20:25:49,740 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 20:25:49,742 INFO ]: 0 new accepting states [2018-06-24 20:25:50,311 INFO ]: Removed 53 edges and 8 locations by large block encoding [2018-06-24 20:25:50,313 INFO ]: Removed 1 edges and 1 locations by removing sink states [2018-06-24 20:25:50,316 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:25:50,317 INFO ]: 0 new accepting states [2018-06-24 20:25:50,321 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:25:50,322 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:25:50,324 INFO ]: Encoded RCFG 133 locations, 266 edges [2018-06-24 20:25:50,325 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:25:50 BasicIcfg [2018-06-24 20:25:50,325 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:25:50,326 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:25:50,326 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:25:50,329 INFO ]: TraceAbstraction initialized [2018-06-24 20:25:50,329 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:25:47" (1/4) ... [2018-06-24 20:25:50,330 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffb1c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:25:50, skipping insertion in model container [2018-06-24 20:25:50,330 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:25:48" (2/4) ... [2018-06-24 20:25:50,330 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffb1c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:25:50, skipping insertion in model container [2018-06-24 20:25:50,331 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:25:49" (3/4) ... [2018-06-24 20:25:50,331 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffb1c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:25:50, skipping insertion in model container [2018-06-24 20:25:50,331 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:25:50" (4/4) ... [2018-06-24 20:25:50,333 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:25:50,341 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:25:50,358 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:25:50,407 INFO ]: Using default assertion order modulation [2018-06-24 20:25:50,407 INFO ]: Interprodecural is true [2018-06-24 20:25:50,407 INFO ]: Hoare is false [2018-06-24 20:25:50,407 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:25:50,407 INFO ]: Backedges is TWOTRACK [2018-06-24 20:25:50,407 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:25:50,407 INFO ]: Difference is false [2018-06-24 20:25:50,407 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:25:50,407 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:25:50,424 INFO ]: Start isEmpty. Operand 133 states. [2018-06-24 20:25:50,459 INFO ]: Finished isEmpty. Found accepting run of length 5 [2018-06-24 20:25:50,459 INFO ]: Found error trace [2018-06-24 20:25:50,461 INFO ]: trace histogram [1, 1, 1, 1] [2018-06-24 20:25:50,461 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:25:50,466 INFO ]: Analyzing trace with hash 5574833, now seen corresponding path program 1 times [2018-06-24 20:25:50,467 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:25:50,468 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:25:50,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:25:50,500 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:25:50,500 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:25:50,575 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:25:50,721 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:25:50,724 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:25:50,724 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:25:50,726 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:25:50,741 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:25:50,741 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:25:50,744 INFO ]: Start difference. First operand 133 states. Second operand 3 states. [2018-06-24 20:25:52,610 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:25:52,610 INFO ]: Finished difference Result 263 states and 529 transitions. [2018-06-24 20:25:52,610 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:25:52,611 INFO ]: Start accepts. Automaton has 3 states. Word has length 4 [2018-06-24 20:25:52,612 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:25:52,647 INFO ]: With dead ends: 263 [2018-06-24 20:25:52,647 INFO ]: Without dead ends: 263 [2018-06-24 20:25:52,649 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 20:25:52,667 INFO ]: Start minimizeSevpa. Operand 263 states. [2018-06-24 20:25:52,782 INFO ]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-06-24 20:25:52,784 INFO ]: Start removeUnreachable. Operand 263 states. [2018-06-24 20:25:52,801 INFO ]: Finished removeUnreachable. Reduced from 263 states to 263 states and 529 transitions. [2018-06-24 20:25:52,802 INFO ]: Start accepts. Automaton has 263 states and 529 transitions. Word has length 4 [2018-06-24 20:25:52,803 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:25:52,804 INFO ]: Abstraction has 263 states and 529 transitions. [2018-06-24 20:25:52,804 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:25:52,804 INFO ]: Start isEmpty. Operand 263 states and 529 transitions. [2018-06-24 20:25:52,830 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 20:25:52,830 INFO ]: Found error trace [2018-06-24 20:25:52,830 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:25:52,830 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:25:52,830 INFO ]: Analyzing trace with hash 1124259531, now seen corresponding path program 1 times [2018-06-24 20:25:52,830 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:25:52,830 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:25:52,831 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:25:52,831 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:25:52,831 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:25:52,869 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:25:53,008 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:25:53,008 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:25:53,008 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:25:53,009 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:25:53,009 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:25:53,009 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:25:53,010 INFO ]: Start difference. First operand 263 states and 529 transitions. Second operand 3 states. [2018-06-24 20:25:54,554 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:25:54,554 INFO ]: Finished difference Result 393 states and 788 transitions. [2018-06-24 20:25:54,555 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:25:54,555 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-24 20:25:54,555 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:25:54,566 INFO ]: With dead ends: 393 [2018-06-24 20:25:54,566 INFO ]: Without dead ends: 393 [2018-06-24 20:25:54,567 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 20:25:54,567 INFO ]: Start minimizeSevpa. Operand 393 states. [2018-06-24 20:25:54,698 INFO ]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-06-24 20:25:54,698 INFO ]: Start removeUnreachable. Operand 393 states. [2018-06-24 20:25:54,713 INFO ]: Finished removeUnreachable. Reduced from 393 states to 393 states and 788 transitions. [2018-06-24 20:25:54,713 INFO ]: Start accepts. Automaton has 393 states and 788 transitions. Word has length 8 [2018-06-24 20:25:54,713 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:25:54,713 INFO ]: Abstraction has 393 states and 788 transitions. [2018-06-24 20:25:54,713 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:25:54,713 INFO ]: Start isEmpty. Operand 393 states and 788 transitions. [2018-06-24 20:25:54,733 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:25:54,733 INFO ]: Found error trace [2018-06-24 20:25:54,733 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:25:54,733 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:25:54,733 INFO ]: Analyzing trace with hash -311070886, now seen corresponding path program 1 times [2018-06-24 20:25:54,733 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:25:54,733 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:25:54,734 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:25:54,734 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:25:54,734 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:25:54,771 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:25:54,888 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:25:54,888 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:25:54,888 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:25:54,888 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:25:54,888 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:25:54,888 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:25:54,889 INFO ]: Start difference. First operand 393 states and 788 transitions. Second operand 5 states. [2018-06-24 20:25:58,153 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:25:58,153 INFO ]: Finished difference Result 837 states and 2820 transitions. [2018-06-24 20:25:58,153 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:25:58,153 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-24 20:25:58,153 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:25:58,242 INFO ]: With dead ends: 837 [2018-06-24 20:25:58,242 INFO ]: Without dead ends: 833 [2018-06-24 20:25:58,243 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:25:58,243 INFO ]: Start minimizeSevpa. Operand 833 states. [2018-06-24 20:25:58,581 INFO ]: Finished minimizeSevpa. Reduced states from 833 to 605. [2018-06-24 20:25:58,581 INFO ]: Start removeUnreachable. Operand 605 states. [2018-06-24 20:25:58,601 INFO ]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1688 transitions. [2018-06-24 20:25:58,601 INFO ]: Start accepts. Automaton has 605 states and 1688 transitions. Word has length 9 [2018-06-24 20:25:58,601 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:25:58,601 INFO ]: Abstraction has 605 states and 1688 transitions. [2018-06-24 20:25:58,601 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:25:58,601 INFO ]: Start isEmpty. Operand 605 states and 1688 transitions. [2018-06-24 20:25:58,624 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:25:58,624 INFO ]: Found error trace [2018-06-24 20:25:58,624 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:25:58,624 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:25:58,625 INFO ]: Analyzing trace with hash -309223844, now seen corresponding path program 1 times [2018-06-24 20:25:58,625 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:25:58,625 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:25:58,627 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:25:58,627 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:25:58,627 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:25:58,674 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:25:58,875 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:25:58,875 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:25:58,875 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:25:58,875 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:25:58,875 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:25:58,875 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:25:58,875 INFO ]: Start difference. First operand 605 states and 1688 transitions. Second operand 5 states. [2018-06-24 20:26:04,814 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:26:04,814 INFO ]: Finished difference Result 1157 states and 4773 transitions. [2018-06-24 20:26:04,815 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:26:04,815 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-24 20:26:04,815 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:26:04,944 INFO ]: With dead ends: 1157 [2018-06-24 20:26:04,944 INFO ]: Without dead ends: 1152 [2018-06-24 20:26:04,944 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:26:04,945 INFO ]: Start minimizeSevpa. Operand 1152 states. [2018-06-24 20:26:05,439 INFO ]: Finished minimizeSevpa. Reduced states from 1152 to 856. [2018-06-24 20:26:05,439 INFO ]: Start removeUnreachable. Operand 856 states. [2018-06-24 20:26:05,471 INFO ]: Finished removeUnreachable. Reduced from 856 states to 856 states and 3003 transitions. [2018-06-24 20:26:05,471 INFO ]: Start accepts. Automaton has 856 states and 3003 transitions. Word has length 9 [2018-06-24 20:26:05,471 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:26:05,471 INFO ]: Abstraction has 856 states and 3003 transitions. [2018-06-24 20:26:05,472 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:26:05,472 INFO ]: Start isEmpty. Operand 856 states and 3003 transitions. [2018-06-24 20:26:05,496 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:26:05,496 INFO ]: Found error trace [2018-06-24 20:26:05,496 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:26:05,496 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:26:05,497 INFO ]: Analyzing trace with hash -308300323, now seen corresponding path program 1 times [2018-06-24 20:26:05,497 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:26:05,497 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:26:05,499 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:05,499 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:26:05,499 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:05,536 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:26:05,846 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:26:05,846 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:26:05,847 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:26:05,847 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:26:05,847 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:26:05,847 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:26:05,847 INFO ]: Start difference. First operand 856 states and 3003 transitions. Second operand 5 states. [2018-06-24 20:26:09,612 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:26:09,612 INFO ]: Finished difference Result 1837 states and 8886 transitions. [2018-06-24 20:26:09,612 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:26:09,612 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-24 20:26:09,612 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:26:09,750 INFO ]: With dead ends: 1837 [2018-06-24 20:26:09,750 INFO ]: Without dead ends: 1830 [2018-06-24 20:26:09,751 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:26:09,751 INFO ]: Start minimizeSevpa. Operand 1830 states. [2018-06-24 20:26:10,526 INFO ]: Finished minimizeSevpa. Reduced states from 1830 to 1446. [2018-06-24 20:26:10,526 INFO ]: Start removeUnreachable. Operand 1446 states. [2018-06-24 20:26:10,599 INFO ]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 6114 transitions. [2018-06-24 20:26:10,599 INFO ]: Start accepts. Automaton has 1446 states and 6114 transitions. Word has length 9 [2018-06-24 20:26:10,599 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:26:10,599 INFO ]: Abstraction has 1446 states and 6114 transitions. [2018-06-24 20:26:10,599 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:26:10,599 INFO ]: Start isEmpty. Operand 1446 states and 6114 transitions. [2018-06-24 20:26:10,630 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:26:10,631 INFO ]: Found error trace [2018-06-24 20:26:10,631 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:26:10,631 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:26:10,631 INFO ]: Analyzing trace with hash -220565828, now seen corresponding path program 1 times [2018-06-24 20:26:10,631 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:26:10,631 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:26:10,632 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:10,632 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:26:10,632 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:10,643 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:26:10,729 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:26:10,730 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:26:10,730 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:26:10,730 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:26:10,730 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:26:10,730 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:26:10,730 INFO ]: Start difference. First operand 1446 states and 6114 transitions. Second operand 3 states. [2018-06-24 20:26:12,546 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:26:12,546 INFO ]: Finished difference Result 2404 states and 9183 transitions. [2018-06-24 20:26:12,547 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:26:12,547 INFO ]: Start accepts. Automaton has 3 states. Word has length 9 [2018-06-24 20:26:12,547 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:26:12,694 INFO ]: With dead ends: 2404 [2018-06-24 20:26:12,694 INFO ]: Without dead ends: 2404 [2018-06-24 20:26:12,694 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 20:26:12,696 INFO ]: Start minimizeSevpa. Operand 2404 states. [2018-06-24 20:26:13,460 INFO ]: Finished minimizeSevpa. Reduced states from 2404 to 2404. [2018-06-24 20:26:13,460 INFO ]: Start removeUnreachable. Operand 2404 states. [2018-06-24 20:26:13,608 INFO ]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 9183 transitions. [2018-06-24 20:26:13,609 INFO ]: Start accepts. Automaton has 2404 states and 9183 transitions. Word has length 9 [2018-06-24 20:26:13,609 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:26:13,609 INFO ]: Abstraction has 2404 states and 9183 transitions. [2018-06-24 20:26:13,609 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:26:13,609 INFO ]: Start isEmpty. Operand 2404 states and 9183 transitions. [2018-06-24 20:26:13,650 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:26:13,650 INFO ]: Found error trace [2018-06-24 20:26:13,650 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:26:13,650 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:26:13,651 INFO ]: Analyzing trace with hash 730800246, now seen corresponding path program 1 times [2018-06-24 20:26:13,651 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:26:13,651 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:26:13,651 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:13,651 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:26:13,651 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:13,670 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:26:13,834 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:26:13,834 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:26:13,834 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:26:13,834 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:26:13,834 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:26:13,834 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:26:13,834 INFO ]: Start difference. First operand 2404 states and 9183 transitions. Second operand 5 states. [2018-06-24 20:26:14,921 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:26:14,921 INFO ]: Finished difference Result 3803 states and 17479 transitions. [2018-06-24 20:26:14,921 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:26:14,921 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-24 20:26:14,922 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:26:16,313 INFO ]: With dead ends: 3803 [2018-06-24 20:26:16,313 INFO ]: Without dead ends: 3803 [2018-06-24 20:26:16,314 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:26:16,315 INFO ]: Start minimizeSevpa. Operand 3803 states. [2018-06-24 20:26:17,191 INFO ]: Finished minimizeSevpa. Reduced states from 3803 to 3155. [2018-06-24 20:26:17,191 INFO ]: Start removeUnreachable. Operand 3155 states. [2018-06-24 20:26:17,601 INFO ]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 11928 transitions. [2018-06-24 20:26:17,602 INFO ]: Start accepts. Automaton has 3155 states and 11928 transitions. Word has length 9 [2018-06-24 20:26:17,602 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:26:17,602 INFO ]: Abstraction has 3155 states and 11928 transitions. [2018-06-24 20:26:17,602 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:26:17,602 INFO ]: Start isEmpty. Operand 3155 states and 11928 transitions. [2018-06-24 20:26:17,650 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 20:26:17,650 INFO ]: Found error trace [2018-06-24 20:26:17,650 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:26:17,650 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:26:17,651 INFO ]: Analyzing trace with hash -1222181926, now seen corresponding path program 1 times [2018-06-24 20:26:17,651 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:26:17,651 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:26:17,651 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:17,651 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:26:17,651 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:17,666 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:26:17,862 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:26:17,862 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:26:17,862 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-24 20:26:17,862 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:26:17,862 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:26:17,862 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:26:17,863 INFO ]: Start difference. First operand 3155 states and 11928 transitions. Second operand 6 states. [2018-06-24 20:26:26,010 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:26:26,010 INFO ]: Finished difference Result 7835 states and 48292 transitions. [2018-06-24 20:26:26,011 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 20:26:26,011 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-24 20:26:26,011 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:26:26,987 INFO ]: With dead ends: 7835 [2018-06-24 20:26:26,987 INFO ]: Without dead ends: 7813 [2018-06-24 20:26:26,987 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-24 20:26:26,991 INFO ]: Start minimizeSevpa. Operand 7813 states. [2018-06-24 20:26:32,144 INFO ]: Finished minimizeSevpa. Reduced states from 7813 to 4727. [2018-06-24 20:26:32,144 INFO ]: Start removeUnreachable. Operand 4727 states. [2018-06-24 20:26:32,574 INFO ]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 23143 transitions. [2018-06-24 20:26:32,574 INFO ]: Start accepts. Automaton has 4727 states and 23143 transitions. Word has length 10 [2018-06-24 20:26:32,574 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:26:32,574 INFO ]: Abstraction has 4727 states and 23143 transitions. [2018-06-24 20:26:32,574 INFO ]: Interpolant automaton has 6 states. [2018-06-24 20:26:32,574 INFO ]: Start isEmpty. Operand 4727 states and 23143 transitions. [2018-06-24 20:26:32,607 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 20:26:32,607 INFO ]: Found error trace [2018-06-24 20:26:32,607 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:26:32,608 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:26:32,608 INFO ]: Analyzing trace with hash -1736911998, now seen corresponding path program 1 times [2018-06-24 20:26:32,608 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:26:32,608 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:26:32,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:32,609 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:26:32,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:32,625 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:26:32,716 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:26:32,716 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:26:32,716 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-24 20:26:32,716 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:26:32,716 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:26:32,716 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:26:32,716 INFO ]: Start difference. First operand 4727 states and 23143 transitions. Second operand 6 states. Received shutdown request... [2018-06-24 20:26:46,448 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 20:26:46,449 WARN ]: Verification canceled [2018-06-24 20:26:46,451 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:26:46,453 WARN ]: Timeout [2018-06-24 20:26:46,453 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:26:46 BasicIcfg [2018-06-24 20:26:46,453 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:26:46,456 INFO ]: Toolchain (without parser) took 58480.30 ms. Allocated memory was 308.8 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 250.2 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.7 GB. Max. memory is 3.6 GB. [2018-06-24 20:26:46,457 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:26:46,458 INFO ]: ChcToBoogie took 151.90 ms. Allocated memory is still 308.8 MB. Free memory was 249.2 MB in the beginning and 246.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:26:46,458 INFO ]: Boogie Preprocessor took 118.43 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 244.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:26:46,458 INFO ]: RCFGBuilder took 1400.38 ms. Allocated memory was 308.8 MB in the beginning and 324.0 MB in the end (delta: 15.2 MB). Free memory was 243.2 MB in the beginning and 280.2 MB in the end (delta: -37.0 MB). Peak memory consumption was 61.6 MB. Max. memory is 3.6 GB. [2018-06-24 20:26:46,459 INFO ]: BlockEncodingV2 took 673.41 ms. Allocated memory is still 324.0 MB. Free memory was 280.2 MB in the beginning and 237.1 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:26:46,460 INFO ]: TraceAbstraction took 56126.92 ms. Allocated memory was 324.0 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 237.1 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. [2018-06-24 20:26:46,465 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 144 locations, 278 edges - StatisticsResult: Encoded RCFG 133 locations, 266 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 151.90 ms. Allocated memory is still 308.8 MB. Free memory was 249.2 MB in the beginning and 246.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 118.43 ms. Allocated memory is still 308.8 MB. Free memory was 246.2 MB in the beginning and 244.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1400.38 ms. Allocated memory was 308.8 MB in the beginning and 324.0 MB in the end (delta: 15.2 MB). Free memory was 243.2 MB in the beginning and 280.2 MB in the end (delta: -37.0 MB). Peak memory consumption was 61.6 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 673.41 ms. Allocated memory is still 324.0 MB. Free memory was 280.2 MB in the beginning and 237.1 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 56126.92 ms. Allocated memory was 324.0 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 237.1 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (4727states) and interpolant automaton (currently 11 states, 6 states before enhancement), while ReachableStatesComputation was computing reachable states (12470 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 133 locations, 1 error locations. TIMEOUT Result, 56.0s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 44.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4338 SDtfs, 997 SDslu, 4267 SDs, 0 SdLazy, 23003 SolverSat, 3799 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4727occurred in iteration=8, 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: 9.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 4642 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 16/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fortune-half.24.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-26-46-481.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fortune-half.24.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-26-46-481.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fortune-half.24.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-26-46-481.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fortune-half.24.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-26-46-481.csv Completed graceful shutdown