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/max.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:22:05,191 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:22:05,193 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:22:05,206 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:22:05,206 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:22:05,207 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:22:05,210 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:22:05,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:22:05,218 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:22:05,219 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:22:05,220 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:22:05,220 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:22:05,221 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:22:05,222 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:22:05,224 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:22:05,225 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:22:05,226 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:22:05,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:22:05,237 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:22:05,238 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:22:05,239 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:22:05,244 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:22:05,244 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:22:05,245 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:22:05,245 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:22:05,246 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:22:05,250 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:22:05,251 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:22:05,252 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:22:05,252 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:22:05,253 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:22:05,253 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:22:05,253 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:22:05,258 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:22:05,258 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:22:05,259 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:22:05,280 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:22:05,281 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:22:05,282 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:22:05,282 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:22:05,283 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:22:05,283 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:22:05,283 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:22:05,283 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:22:05,284 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:22:05,284 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:22:05,284 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:22:05,284 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:22:05,284 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:22:05,285 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:22:05,285 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:22:05,285 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:22:05,285 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:22:05,285 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:22:05,285 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:22:05,285 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:22:05,286 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:22:05,289 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:22:05,289 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:22:05,338 INFO ]: Repository-Root is: /tmp [2018-06-24 21:22:05,354 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:22:05,359 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:22:05,361 INFO ]: Initializing SmtParser... [2018-06-24 21:22:05,361 INFO ]: SmtParser initialized [2018-06-24 21:22:05,362 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/max.smt2 [2018-06-24 21:22:05,363 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 21:22:05,449 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/max.smt2 unknown [2018-06-24 21:22:05,591 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/max.smt2 [2018-06-24 21:22:05,596 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:22:05,614 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:22:05,614 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:22:05,615 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:22:05,615 INFO ]: ChcToBoogie initialized [2018-06-24 21:22:05,618 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:22:05" (1/1) ... [2018-06-24 21:22:05,674 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05 Unit [2018-06-24 21:22:05,674 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:22:05,679 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:22:05,679 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:22:05,679 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:22:05,700 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05" (1/1) ... [2018-06-24 21:22:05,700 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05" (1/1) ... [2018-06-24 21:22:05,707 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05" (1/1) ... [2018-06-24 21:22:05,707 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05" (1/1) ... [2018-06-24 21:22:05,710 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05" (1/1) ... [2018-06-24 21:22:05,712 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05" (1/1) ... [2018-06-24 21:22:05,713 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05" (1/1) ... [2018-06-24 21:22:05,715 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:22:05,715 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:22:05,715 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:22:05,715 INFO ]: RCFGBuilder initialized [2018-06-24 21:22:05,716 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05" (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 21:22:05,732 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:22:05,732 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:22:05,733 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:22:05,733 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:22:05,733 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:22:05,733 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 21:22:06,041 INFO ]: Using library mode [2018-06-24 21:22:06,041 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:06 BoogieIcfgContainer [2018-06-24 21:22:06,041 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:22:06,042 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:22:06,042 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:22:06,043 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:22:06,043 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:06" (1/1) ... [2018-06-24 21:22:06,061 INFO ]: Initial Icfg 18 locations, 23 edges [2018-06-24 21:22:06,063 INFO ]: Using Remove infeasible edges [2018-06-24 21:22:06,063 INFO ]: Using Maximize final states [2018-06-24 21:22:06,064 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:22:06,064 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:22:06,071 INFO ]: Using Remove sink states [2018-06-24 21:22:06,072 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:22:06,072 INFO ]: Using Use SBE [2018-06-24 21:22:06,081 INFO ]: SBE split 0 edges [2018-06-24 21:22:06,089 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:22:06,090 INFO ]: 0 new accepting states [2018-06-24 21:22:06,172 INFO ]: Removed 16 edges and 6 locations by large block encoding [2018-06-24 21:22:06,174 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:22:06,175 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:22:06,175 INFO ]: 0 new accepting states [2018-06-24 21:22:06,176 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:22:06,177 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:22:06,177 INFO ]: Encoded RCFG 10 locations, 14 edges [2018-06-24 21:22:06,178 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:22:06 BasicIcfg [2018-06-24 21:22:06,178 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:22:06,178 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:22:06,178 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:22:06,181 INFO ]: TraceAbstraction initialized [2018-06-24 21:22:06,181 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:22:05" (1/4) ... [2018-06-24 21:22:06,182 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a88bf5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:22:06, skipping insertion in model container [2018-06-24 21:22:06,182 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:05" (2/4) ... [2018-06-24 21:22:06,182 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a88bf5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:22:06, skipping insertion in model container [2018-06-24 21:22:06,182 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:06" (3/4) ... [2018-06-24 21:22:06,183 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a88bf5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:22:06, skipping insertion in model container [2018-06-24 21:22:06,183 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:22:06" (4/4) ... [2018-06-24 21:22:06,186 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:22:06,193 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:22:06,200 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:22:06,249 INFO ]: Using default assertion order modulation [2018-06-24 21:22:06,249 INFO ]: Interprodecural is true [2018-06-24 21:22:06,249 INFO ]: Hoare is false [2018-06-24 21:22:06,249 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:22:06,249 INFO ]: Backedges is TWOTRACK [2018-06-24 21:22:06,249 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:22:06,249 INFO ]: Difference is false [2018-06-24 21:22:06,250 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:22:06,250 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:22:06,264 INFO ]: Start isEmpty. Operand 10 states. [2018-06-24 21:22:06,276 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:22:06,276 INFO ]: Found error trace [2018-06-24 21:22:06,277 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:22:06,277 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:06,282 INFO ]: Analyzing trace with hash 34052742, now seen corresponding path program 1 times [2018-06-24 21:22:06,284 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:06,285 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:06,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:06,319 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:06,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:06,358 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:06,411 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:22:06,413 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:22:06,413 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:22:06,414 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:22:06,425 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:22:06,426 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:22:06,427 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-24 21:22:06,522 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:06,522 INFO ]: Finished difference Result 15 states and 21 transitions. [2018-06-24 21:22:06,523 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:22:06,524 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:22:06,524 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:06,533 INFO ]: With dead ends: 15 [2018-06-24 21:22:06,533 INFO ]: Without dead ends: 15 [2018-06-24 21:22:06,535 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 21:22:06,548 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-24 21:22:06,570 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-24 21:22:06,571 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:22:06,572 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2018-06-24 21:22:06,574 INFO ]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 5 [2018-06-24 21:22:06,575 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:06,575 INFO ]: Abstraction has 15 states and 21 transitions. [2018-06-24 21:22:06,575 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:22:06,575 INFO ]: Start isEmpty. Operand 15 states and 21 transitions. [2018-06-24 21:22:06,577 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 21:22:06,577 INFO ]: Found error trace [2018-06-24 21:22:06,577 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:22:06,577 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:06,577 INFO ]: Analyzing trace with hash -746253795, now seen corresponding path program 1 times [2018-06-24 21:22:06,577 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:06,577 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:06,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:06,580 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:06,580 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:06,593 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:06,678 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:22:06,678 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:22:06,678 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:22:06,680 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:22:06,680 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:22:06,680 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:22:06,680 INFO ]: Start difference. First operand 15 states and 21 transitions. Second operand 3 states. [2018-06-24 21:22:06,861 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:06,861 INFO ]: Finished difference Result 20 states and 29 transitions. [2018-06-24 21:22:06,862 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:22:06,862 INFO ]: Start accepts. Automaton has 3 states. Word has length 10 [2018-06-24 21:22:06,862 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:06,863 INFO ]: With dead ends: 20 [2018-06-24 21:22:06,863 INFO ]: Without dead ends: 20 [2018-06-24 21:22:06,864 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 21:22:06,864 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-24 21:22:06,869 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-06-24 21:22:06,870 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-24 21:22:06,870 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2018-06-24 21:22:06,871 INFO ]: Start accepts. Automaton has 20 states and 29 transitions. Word has length 10 [2018-06-24 21:22:06,871 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:06,871 INFO ]: Abstraction has 20 states and 29 transitions. [2018-06-24 21:22:06,871 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:22:06,871 INFO ]: Start isEmpty. Operand 20 states and 29 transitions. [2018-06-24 21:22:06,872 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:22:06,872 INFO ]: Found error trace [2018-06-24 21:22:06,872 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:22:06,872 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:06,872 INFO ]: Analyzing trace with hash -1995253638, now seen corresponding path program 1 times [2018-06-24 21:22:06,872 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:06,872 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:06,874 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:06,874 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:06,874 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:06,917 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:07,052 INFO ]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:22:07,052 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:22:07,052 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 21:22:07,052 INFO ]: Interpolant automaton has 4 states [2018-06-24 21:22:07,053 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 21:22:07,053 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:22:07,053 INFO ]: Start difference. First operand 20 states and 29 transitions. Second operand 4 states. [2018-06-24 21:22:07,114 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:07,115 INFO ]: Finished difference Result 24 states and 34 transitions. [2018-06-24 21:22:07,115 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:22:07,115 INFO ]: Start accepts. Automaton has 4 states. Word has length 15 [2018-06-24 21:22:07,115 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:07,118 INFO ]: With dead ends: 24 [2018-06-24 21:22:07,118 INFO ]: Without dead ends: 24 [2018-06-24 21:22:07,118 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 21:22:07,118 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-24 21:22:07,124 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-06-24 21:22:07,124 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-24 21:22:07,127 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2018-06-24 21:22:07,127 INFO ]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 15 [2018-06-24 21:22:07,127 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:07,127 INFO ]: Abstraction has 22 states and 30 transitions. [2018-06-24 21:22:07,127 INFO ]: Interpolant automaton has 4 states. [2018-06-24 21:22:07,127 INFO ]: Start isEmpty. Operand 22 states and 30 transitions. [2018-06-24 21:22:07,128 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:22:07,128 INFO ]: Found error trace [2018-06-24 21:22:07,128 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:22:07,128 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:07,128 INFO ]: Analyzing trace with hash -1995254599, now seen corresponding path program 1 times [2018-06-24 21:22:07,128 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:07,128 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:07,129 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:07,129 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:07,129 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:07,150 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:07,633 WARN ]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-24 21:22:07,921 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:07,921 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:07,921 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 21:22:07,931 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:07,972 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:07,982 INFO ]: Computing forward predicates... [2018-06-24 21:22:08,315 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:08,337 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:08,337 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2018-06-24 21:22:08,337 INFO ]: Interpolant automaton has 14 states [2018-06-24 21:22:08,337 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-24 21:22:08,338 INFO ]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:22:08,338 INFO ]: Start difference. First operand 22 states and 30 transitions. Second operand 14 states. [2018-06-24 21:22:08,903 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-06-24 21:22:09,041 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:09,041 INFO ]: Finished difference Result 34 states and 44 transitions. [2018-06-24 21:22:09,042 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:22:09,042 INFO ]: Start accepts. Automaton has 14 states. Word has length 15 [2018-06-24 21:22:09,042 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:09,043 INFO ]: With dead ends: 34 [2018-06-24 21:22:09,043 INFO ]: Without dead ends: 27 [2018-06-24 21:22:09,043 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-06-24 21:22:09,044 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-24 21:22:09,048 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-06-24 21:22:09,048 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-24 21:22:09,049 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2018-06-24 21:22:09,049 INFO ]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 15 [2018-06-24 21:22:09,049 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:09,049 INFO ]: Abstraction has 24 states and 32 transitions. [2018-06-24 21:22:09,049 INFO ]: Interpolant automaton has 14 states. [2018-06-24 21:22:09,049 INFO ]: Start isEmpty. Operand 24 states and 32 transitions. [2018-06-24 21:22:09,050 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:22:09,050 INFO ]: Found error trace [2018-06-24 21:22:09,050 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:22:09,050 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:09,051 INFO ]: Analyzing trace with hash -2023883750, now seen corresponding path program 2 times [2018-06-24 21:22:09,051 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:09,051 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:09,051 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:09,051 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:09,051 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:09,065 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:09,190 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:09,190 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:09,190 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 21:22:09,197 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:22:09,226 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:22:09,226 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:09,229 INFO ]: Computing forward predicates... [2018-06-24 21:22:09,336 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:09,355 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:09,355 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2018-06-24 21:22:09,355 INFO ]: Interpolant automaton has 14 states [2018-06-24 21:22:09,356 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-24 21:22:09,356 INFO ]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:22:09,356 INFO ]: Start difference. First operand 24 states and 32 transitions. Second operand 14 states. [2018-06-24 21:22:09,835 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:09,835 INFO ]: Finished difference Result 34 states and 43 transitions. [2018-06-24 21:22:09,835 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:22:09,835 INFO ]: Start accepts. Automaton has 14 states. Word has length 15 [2018-06-24 21:22:09,836 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:09,836 INFO ]: With dead ends: 34 [2018-06-24 21:22:09,836 INFO ]: Without dead ends: 24 [2018-06-24 21:22:09,837 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-06-24 21:22:09,837 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-24 21:22:09,841 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-06-24 21:22:09,841 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-24 21:22:09,841 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2018-06-24 21:22:09,841 INFO ]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 15 [2018-06-24 21:22:09,842 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:09,842 INFO ]: Abstraction has 21 states and 28 transitions. [2018-06-24 21:22:09,842 INFO ]: Interpolant automaton has 14 states. [2018-06-24 21:22:09,842 INFO ]: Start isEmpty. Operand 21 states and 28 transitions. [2018-06-24 21:22:09,842 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:22:09,842 INFO ]: Found error trace [2018-06-24 21:22:09,842 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:22:09,842 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:09,843 INFO ]: Analyzing trace with hash -187800136, now seen corresponding path program 3 times [2018-06-24 21:22:09,843 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:09,843 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:09,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:09,843 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:09,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:09,855 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:10,135 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:10,136 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:10,136 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 21:22:10,142 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:22:10,158 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-24 21:22:10,158 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:10,160 INFO ]: Computing forward predicates... [2018-06-24 21:22:10,253 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:10,272 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:10,272 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2018-06-24 21:22:10,272 INFO ]: Interpolant automaton has 14 states [2018-06-24 21:22:10,272 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-24 21:22:10,272 INFO ]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2018-06-24 21:22:10,273 INFO ]: Start difference. First operand 21 states and 28 transitions. Second operand 14 states. [2018-06-24 21:22:10,595 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:10,595 INFO ]: Finished difference Result 44 states and 55 transitions. [2018-06-24 21:22:10,597 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-24 21:22:10,597 INFO ]: Start accepts. Automaton has 14 states. Word has length 15 [2018-06-24 21:22:10,597 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:10,598 INFO ]: With dead ends: 44 [2018-06-24 21:22:10,598 INFO ]: Without dead ends: 27 [2018-06-24 21:22:10,598 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2018-06-24 21:22:10,599 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-24 21:22:10,603 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-06-24 21:22:10,603 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-24 21:22:10,604 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2018-06-24 21:22:10,604 INFO ]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2018-06-24 21:22:10,604 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:10,604 INFO ]: Abstraction has 24 states and 29 transitions. [2018-06-24 21:22:10,604 INFO ]: Interpolant automaton has 14 states. [2018-06-24 21:22:10,604 INFO ]: Start isEmpty. Operand 24 states and 29 transitions. [2018-06-24 21:22:10,605 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-24 21:22:10,605 INFO ]: Found error trace [2018-06-24 21:22:10,605 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:22:10,605 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:10,605 INFO ]: Analyzing trace with hash -216429287, now seen corresponding path program 1 times [2018-06-24 21:22:10,605 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:10,605 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:10,606 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:10,606 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:10,606 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:10,614 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:10,686 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:10,686 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:10,686 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 21:22:10,703 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:10,718 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:10,720 INFO ]: Computing forward predicates... [2018-06-24 21:22:10,748 INFO ]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:10,766 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:10,766 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-06-24 21:22:10,767 INFO ]: Interpolant automaton has 11 states [2018-06-24 21:22:10,767 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-24 21:22:10,767 INFO ]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:22:10,767 INFO ]: Start difference. First operand 24 states and 29 transitions. Second operand 11 states. [2018-06-24 21:22:10,892 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:10,892 INFO ]: Finished difference Result 19 states and 21 transitions. [2018-06-24 21:22:10,893 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-24 21:22:10,893 INFO ]: Start accepts. Automaton has 11 states. Word has length 15 [2018-06-24 21:22:10,893 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:10,893 INFO ]: With dead ends: 19 [2018-06-24 21:22:10,893 INFO ]: Without dead ends: 0 [2018-06-24 21:22:10,893 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2018-06-24 21:22:10,893 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:22:10,893 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:22:10,893 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:22:10,893 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:22:10,893 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-06-24 21:22:10,893 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:10,893 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:22:10,893 INFO ]: Interpolant automaton has 11 states. [2018-06-24 21:22:10,894 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:22:10,894 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:22:10,895 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:22:10,896 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:22:10 BasicIcfg [2018-06-24 21:22:10,897 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:22:10,897 INFO ]: Toolchain (without parser) took 5300.69 ms. Allocated memory was 305.7 MB in the beginning and 338.2 MB in the end (delta: 32.5 MB). Free memory was 262.2 MB in the beginning and 225.2 MB in the end (delta: 37.0 MB). Peak memory consumption was 69.5 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:10,898 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:22:10,898 INFO ]: ChcToBoogie took 63.66 ms. Allocated memory is still 305.7 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:10,899 INFO ]: Boogie Preprocessor took 36.14 ms. Allocated memory is still 305.7 MB. Free memory was 260.2 MB in the beginning and 258.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:10,899 INFO ]: RCFGBuilder took 326.25 ms. Allocated memory is still 305.7 MB. Free memory was 258.2 MB in the beginning and 250.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:10,900 INFO ]: BlockEncodingV2 took 135.99 ms. Allocated memory is still 305.7 MB. Free memory was 250.1 MB in the beginning and 246.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:10,900 INFO ]: TraceAbstraction took 4718.27 ms. Allocated memory was 305.7 MB in the beginning and 338.2 MB in the end (delta: 32.5 MB). Free memory was 246.1 MB in the beginning and 225.2 MB in the end (delta: 20.9 MB). Peak memory consumption was 53.4 MB. Max. memory is 3.6 GB. [2018-06-24 21:22:10,904 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 18 locations, 23 edges - StatisticsResult: Encoded RCFG 10 locations, 14 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 63.66 ms. Allocated memory is still 305.7 MB. Free memory was 262.2 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.14 ms. Allocated memory is still 305.7 MB. Free memory was 260.2 MB in the beginning and 258.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 326.25 ms. Allocated memory is still 305.7 MB. Free memory was 258.2 MB in the beginning and 250.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 135.99 ms. Allocated memory is still 305.7 MB. Free memory was 250.1 MB in the beginning and 246.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4718.27 ms. Allocated memory was 305.7 MB in the beginning and 338.2 MB in the end (delta: 32.5 MB). Free memory was 246.1 MB in the beginning and 225.2 MB in the end (delta: 20.9 MB). Peak memory consumption was 53.4 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, 10 locations, 1 error locations. SAFE Result, 4.6s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 72 SDtfs, 44 SDslu, 156 SDs, 0 SdLazy, 501 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 6779 SizeOfPredicates, 63 NumberOfNonLiveVariables, 444 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 52/84 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/max.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-22-10-915.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-22-10-915.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-22-10-915.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-22-10-915.csv Received shutdown request...