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/graham-scan.30.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:28:05,313 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:28:05,318 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:28:05,330 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:28:05,330 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:28:05,331 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:28:05,332 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:28:05,336 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:28:05,340 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:28:05,341 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:28:05,341 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:28:05,342 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:28:05,342 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:28:05,345 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:28:05,346 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:28:05,347 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:28:05,360 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:28:05,361 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:28:05,363 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:28:05,363 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:28:05,364 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:28:05,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:28:05,367 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:28:05,367 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:28:05,370 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:28:05,371 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:28:05,372 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:28:05,372 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:28:05,373 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:28:05,374 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:28:05,374 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:28:05,375 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:28:05,375 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:28:05,376 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:28:05,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:28:05,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:28:05,397 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:28:05,397 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:28:05,397 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:28:05,397 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:28:05,398 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:28:05,398 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:28:05,399 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:28:05,399 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:28:05,399 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:28:05,399 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:28:05,400 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:28:05,400 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:28:05,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:28:05,400 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:28:05,400 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:28:05,400 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:28:05,401 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:28:05,401 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:28:05,401 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:28:05,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:28:05,401 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:28:05,403 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:28:05,403 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:28:05,442 INFO ]: Repository-Root is: /tmp [2018-06-24 20:28:05,460 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:28:05,467 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:28:05,468 INFO ]: Initializing SmtParser... [2018-06-24 20:28:05,469 INFO ]: SmtParser initialized [2018-06-24 20:28:05,469 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan.30.smt2 [2018-06-24 20:28:05,470 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 20:28:05,559 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan.30.smt2 unknown [2018-06-24 20:28:06,007 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham-scan.30.smt2 [2018-06-24 20:28:06,012 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:28:06,020 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:28:06,020 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:28:06,020 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:28:06,020 INFO ]: ChcToBoogie initialized [2018-06-24 20:28:06,024 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:28:06" (1/1) ... [2018-06-24 20:28:06,131 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06 Unit [2018-06-24 20:28:06,131 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:28:06,132 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:28:06,132 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:28:06,132 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:28:06,154 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06" (1/1) ... [2018-06-24 20:28:06,154 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06" (1/1) ... [2018-06-24 20:28:06,177 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06" (1/1) ... [2018-06-24 20:28:06,177 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06" (1/1) ... [2018-06-24 20:28:06,200 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06" (1/1) ... [2018-06-24 20:28:06,204 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06" (1/1) ... [2018-06-24 20:28:06,208 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06" (1/1) ... [2018-06-24 20:28:06,212 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:28:06,213 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:28:06,213 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:28:06,213 INFO ]: RCFGBuilder initialized [2018-06-24 20:28:06,214 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06" (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 20:28:06,226 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:28:06,226 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:28:06,226 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:28:06,226 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:28:06,226 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:28:06,226 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 20:28:08,314 INFO ]: Using library mode [2018-06-24 20:28:08,315 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:28:08 BoogieIcfgContainer [2018-06-24 20:28:08,315 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:28:08,315 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:28:08,315 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:28:08,318 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:28:08,318 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:28:08" (1/1) ... [2018-06-24 20:28:08,365 INFO ]: Initial Icfg 145 locations, 278 edges [2018-06-24 20:28:08,366 INFO ]: Using Remove infeasible edges [2018-06-24 20:28:08,367 INFO ]: Using Maximize final states [2018-06-24 20:28:08,367 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:28:08,367 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:28:08,372 INFO ]: Using Remove sink states [2018-06-24 20:28:08,372 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:28:08,372 INFO ]: Using Use SBE [2018-06-24 20:28:08,390 INFO ]: SBE split 0 edges [2018-06-24 20:28:08,400 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 20:28:08,405 INFO ]: 0 new accepting states [2018-06-24 20:28:09,082 INFO ]: Removed 47 edges and 7 locations by large block encoding [2018-06-24 20:28:09,085 INFO ]: Removed 1 edges and 1 locations by removing sink states [2018-06-24 20:28:09,090 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:28:09,090 INFO ]: 0 new accepting states [2018-06-24 20:28:09,095 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:28:09,096 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:28:09,098 INFO ]: Encoded RCFG 135 locations, 267 edges [2018-06-24 20:28:09,099 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:28:09 BasicIcfg [2018-06-24 20:28:09,099 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:28:09,101 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:28:09,101 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:28:09,104 INFO ]: TraceAbstraction initialized [2018-06-24 20:28:09,104 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:28:06" (1/4) ... [2018-06-24 20:28:09,105 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44db701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:28:09, skipping insertion in model container [2018-06-24 20:28:09,105 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:28:06" (2/4) ... [2018-06-24 20:28:09,105 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44db701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:28:09, skipping insertion in model container [2018-06-24 20:28:09,106 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:28:08" (3/4) ... [2018-06-24 20:28:09,106 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44db701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:28:09, skipping insertion in model container [2018-06-24 20:28:09,106 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:28:09" (4/4) ... [2018-06-24 20:28:09,109 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:28:09,118 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:28:09,135 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:28:09,182 INFO ]: Using default assertion order modulation [2018-06-24 20:28:09,182 INFO ]: Interprodecural is true [2018-06-24 20:28:09,182 INFO ]: Hoare is false [2018-06-24 20:28:09,182 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:28:09,183 INFO ]: Backedges is TWOTRACK [2018-06-24 20:28:09,183 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:28:09,183 INFO ]: Difference is false [2018-06-24 20:28:09,183 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:28:09,183 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:28:09,205 INFO ]: Start isEmpty. Operand 135 states. [2018-06-24 20:28:09,270 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:28:09,270 INFO ]: Found error trace [2018-06-24 20:28:09,271 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:28:09,271 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:28:09,282 INFO ]: Analyzing trace with hash 173900682, now seen corresponding path program 1 times [2018-06-24 20:28:09,284 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:28:09,284 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:28:09,330 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:09,330 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:28:09,330 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:09,413 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:28:09,580 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:28:09,583 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:28:09,583 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:28:09,585 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:28:09,600 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:28:09,600 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:28:09,602 INFO ]: Start difference. First operand 135 states. Second operand 3 states. [2018-06-24 20:28:11,504 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:28:11,505 INFO ]: Finished difference Result 267 states and 530 transitions. [2018-06-24 20:28:11,506 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:28:11,506 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:28:11,507 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:28:11,556 INFO ]: With dead ends: 267 [2018-06-24 20:28:11,556 INFO ]: Without dead ends: 267 [2018-06-24 20:28:11,558 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 20:28:11,576 INFO ]: Start minimizeSevpa. Operand 267 states. [2018-06-24 20:28:11,696 INFO ]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-06-24 20:28:11,698 INFO ]: Start removeUnreachable. Operand 267 states. [2018-06-24 20:28:11,722 INFO ]: Finished removeUnreachable. Reduced from 267 states to 267 states and 530 transitions. [2018-06-24 20:28:11,724 INFO ]: Start accepts. Automaton has 267 states and 530 transitions. Word has length 5 [2018-06-24 20:28:11,725 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:28:11,725 INFO ]: Abstraction has 267 states and 530 transitions. [2018-06-24 20:28:11,725 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:28:11,725 INFO ]: Start isEmpty. Operand 267 states and 530 transitions. [2018-06-24 20:28:11,736 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:28:11,736 INFO ]: Found error trace [2018-06-24 20:28:11,737 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:28:11,737 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:28:11,737 INFO ]: Analyzing trace with hash 173958342, now seen corresponding path program 1 times [2018-06-24 20:28:11,737 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:28:11,737 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:28:11,738 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:11,738 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:28:11,738 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:11,761 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:28:11,858 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:28:11,858 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:28:11,858 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:28:11,859 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:28:11,859 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:28:11,859 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:28:11,860 INFO ]: Start difference. First operand 267 states and 530 transitions. Second operand 3 states. [2018-06-24 20:28:13,898 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:28:13,898 INFO ]: Finished difference Result 399 states and 794 transitions. [2018-06-24 20:28:13,898 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:28:13,899 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:28:13,899 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:28:13,934 INFO ]: With dead ends: 399 [2018-06-24 20:28:13,934 INFO ]: Without dead ends: 399 [2018-06-24 20:28:13,935 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 20:28:13,936 INFO ]: Start minimizeSevpa. Operand 399 states. [2018-06-24 20:28:14,041 INFO ]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-06-24 20:28:14,041 INFO ]: Start removeUnreachable. Operand 399 states. [2018-06-24 20:28:14,060 INFO ]: Finished removeUnreachable. Reduced from 399 states to 399 states and 794 transitions. [2018-06-24 20:28:14,060 INFO ]: Start accepts. Automaton has 399 states and 794 transitions. Word has length 5 [2018-06-24 20:28:14,060 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:28:14,060 INFO ]: Abstraction has 399 states and 794 transitions. [2018-06-24 20:28:14,060 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:28:14,060 INFO ]: Start isEmpty. Operand 399 states and 794 transitions. [2018-06-24 20:28:14,122 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:28:14,122 INFO ]: Found error trace [2018-06-24 20:28:14,122 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:28:14,122 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:28:14,122 INFO ]: Analyzing trace with hash -891001573, now seen corresponding path program 1 times [2018-06-24 20:28:14,122 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:28:14,123 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:28:14,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:14,123 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:28:14,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:14,227 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:28:14,629 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:28:14,629 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:28:14,629 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:28:14,630 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:28:14,630 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:28:14,630 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:28:14,630 INFO ]: Start difference. First operand 399 states and 794 transitions. Second operand 5 states. [2018-06-24 20:28:17,303 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:28:17,303 INFO ]: Finished difference Result 840 states and 2145 transitions. [2018-06-24 20:28:17,303 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:28:17,303 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-24 20:28:17,303 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:28:17,432 INFO ]: With dead ends: 840 [2018-06-24 20:28:17,432 INFO ]: Without dead ends: 739 [2018-06-24 20:28:17,433 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:28:17,433 INFO ]: Start minimizeSevpa. Operand 739 states. [2018-06-24 20:28:17,644 INFO ]: Finished minimizeSevpa. Reduced states from 739 to 611. [2018-06-24 20:28:17,644 INFO ]: Start removeUnreachable. Operand 611 states. [2018-06-24 20:28:17,678 INFO ]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1347 transitions. [2018-06-24 20:28:17,678 INFO ]: Start accepts. Automaton has 611 states and 1347 transitions. Word has length 9 [2018-06-24 20:28:17,678 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:28:17,678 INFO ]: Abstraction has 611 states and 1347 transitions. [2018-06-24 20:28:17,678 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:28:17,678 INFO ]: Start isEmpty. Operand 611 states and 1347 transitions. [2018-06-24 20:28:17,713 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:28:17,713 INFO ]: Found error trace [2018-06-24 20:28:17,713 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:28:17,713 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:28:17,762 INFO ]: Analyzing trace with hash 2010581135, now seen corresponding path program 1 times [2018-06-24 20:28:17,762 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:28:17,762 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:28:17,763 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:17,763 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:28:17,763 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:17,791 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:28:17,951 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:28:17,951 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:28:17,951 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:28:17,951 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:28:17,952 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:28:17,952 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:28:17,952 INFO ]: Start difference. First operand 611 states and 1347 transitions. Second operand 5 states. [2018-06-24 20:28:22,183 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:28:22,183 INFO ]: Finished difference Result 1520 states and 4883 transitions. [2018-06-24 20:28:22,183 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:28:22,184 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-24 20:28:22,184 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:28:22,393 INFO ]: With dead ends: 1520 [2018-06-24 20:28:22,393 INFO ]: Without dead ends: 1373 [2018-06-24 20:28:22,393 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 20:28:22,394 INFO ]: Start minimizeSevpa. Operand 1373 states. [2018-06-24 20:28:22,798 INFO ]: Finished minimizeSevpa. Reduced states from 1373 to 985. [2018-06-24 20:28:22,798 INFO ]: Start removeUnreachable. Operand 985 states. [2018-06-24 20:28:22,837 INFO ]: Finished removeUnreachable. Reduced from 985 states to 985 states and 2736 transitions. [2018-06-24 20:28:22,837 INFO ]: Start accepts. Automaton has 985 states and 2736 transitions. Word has length 9 [2018-06-24 20:28:22,837 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:28:22,838 INFO ]: Abstraction has 985 states and 2736 transitions. [2018-06-24 20:28:22,838 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:28:22,838 INFO ]: Start isEmpty. Operand 985 states and 2736 transitions. [2018-06-24 20:28:22,866 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:28:22,866 INFO ]: Found error trace [2018-06-24 20:28:22,866 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:28:22,866 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:28:22,867 INFO ]: Analyzing trace with hash 2011504656, now seen corresponding path program 1 times [2018-06-24 20:28:22,867 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:28:22,867 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:28:22,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:22,868 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:28:22,868 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:22,899 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:28:23,216 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:28:23,216 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:28:23,216 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:28:23,216 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:28:23,216 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:28:23,216 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:28:23,216 INFO ]: Start difference. First operand 985 states and 2736 transitions. Second operand 5 states. [2018-06-24 20:28:26,438 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:28:26,438 INFO ]: Finished difference Result 2299 states and 8535 transitions. [2018-06-24 20:28:26,438 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:28:26,438 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-24 20:28:26,439 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:28:26,638 INFO ]: With dead ends: 2299 [2018-06-24 20:28:26,638 INFO ]: Without dead ends: 2215 [2018-06-24 20:28:26,638 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 20:28:26,639 INFO ]: Start minimizeSevpa. Operand 2215 states. [2018-06-24 20:28:27,253 INFO ]: Finished minimizeSevpa. Reduced states from 2215 to 1629. [2018-06-24 20:28:27,253 INFO ]: Start removeUnreachable. Operand 1629 states. [2018-06-24 20:28:27,575 INFO ]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 5434 transitions. [2018-06-24 20:28:27,575 INFO ]: Start accepts. Automaton has 1629 states and 5434 transitions. Word has length 9 [2018-06-24 20:28:27,575 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:28:27,575 INFO ]: Abstraction has 1629 states and 5434 transitions. [2018-06-24 20:28:27,575 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:28:27,575 INFO ]: Start isEmpty. Operand 1629 states and 5434 transitions. [2018-06-24 20:28:27,622 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 20:28:27,622 INFO ]: Found error trace [2018-06-24 20:28:27,622 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:28:27,622 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:28:27,622 INFO ]: Analyzing trace with hash 352423434, now seen corresponding path program 1 times [2018-06-24 20:28:27,622 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:28:27,622 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:28:27,625 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:27,625 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:28:27,625 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:27,659 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:28:27,873 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:28:27,873 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:28:27,873 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-24 20:28:27,873 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:28:27,873 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:28:27,874 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:28:27,874 INFO ]: Start difference. First operand 1629 states and 5434 transitions. Second operand 6 states. [2018-06-24 20:28:33,299 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:28:33,299 INFO ]: Finished difference Result 4509 states and 26327 transitions. [2018-06-24 20:28:33,300 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 20:28:33,300 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-24 20:28:33,300 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:28:34,310 INFO ]: With dead ends: 4509 [2018-06-24 20:28:34,310 INFO ]: Without dead ends: 4301 [2018-06-24 20:28:34,310 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 20:28:34,312 INFO ]: Start minimizeSevpa. Operand 4301 states. [2018-06-24 20:28:36,226 INFO ]: Finished minimizeSevpa. Reduced states from 4301 to 2577. [2018-06-24 20:28:36,227 INFO ]: Start removeUnreachable. Operand 2577 states. [2018-06-24 20:28:36,429 INFO ]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 9161 transitions. [2018-06-24 20:28:36,429 INFO ]: Start accepts. Automaton has 2577 states and 9161 transitions. Word has length 10 [2018-06-24 20:28:36,429 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:28:36,429 INFO ]: Abstraction has 2577 states and 9161 transitions. [2018-06-24 20:28:36,429 INFO ]: Interpolant automaton has 6 states. [2018-06-24 20:28:36,429 INFO ]: Start isEmpty. Operand 2577 states and 9161 transitions. [2018-06-24 20:28:36,459 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 20:28:36,459 INFO ]: Found error trace [2018-06-24 20:28:36,459 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:28:36,459 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:28:36,459 INFO ]: Analyzing trace with hash 352424395, now seen corresponding path program 1 times [2018-06-24 20:28:36,459 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:28:36,459 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:28:36,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:36,460 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:28:36,460 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:36,485 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:28:36,652 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:28:36,653 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:28:36,653 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-24 20:28:36,653 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:28:36,653 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:28:36,653 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:28:36,653 INFO ]: Start difference. First operand 2577 states and 9161 transitions. Second operand 6 states. [2018-06-24 20:28:41,113 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:28:41,114 INFO ]: Finished difference Result 4077 states and 23784 transitions. [2018-06-24 20:28:41,114 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-24 20:28:41,114 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-24 20:28:41,114 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:28:41,825 INFO ]: With dead ends: 4077 [2018-06-24 20:28:41,825 INFO ]: Without dead ends: 4077 [2018-06-24 20:28:41,825 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 20:28:41,827 INFO ]: Start minimizeSevpa. Operand 4077 states. [2018-06-24 20:28:44,839 INFO ]: Finished minimizeSevpa. Reduced states from 4077 to 2591. [2018-06-24 20:28:44,839 INFO ]: Start removeUnreachable. Operand 2591 states. [2018-06-24 20:28:44,975 INFO ]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 9301 transitions. [2018-06-24 20:28:44,975 INFO ]: Start accepts. Automaton has 2591 states and 9301 transitions. Word has length 10 [2018-06-24 20:28:44,975 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:28:44,975 INFO ]: Abstraction has 2591 states and 9301 transitions. [2018-06-24 20:28:44,975 INFO ]: Interpolant automaton has 6 states. [2018-06-24 20:28:44,975 INFO ]: Start isEmpty. Operand 2591 states and 9301 transitions. [2018-06-24 20:28:44,990 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 20:28:44,990 INFO ]: Found error trace [2018-06-24 20:28:44,990 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:28:44,990 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:28:44,991 INFO ]: Analyzing trace with hash -342530549, now seen corresponding path program 1 times [2018-06-24 20:28:44,991 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:28:44,991 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:28:44,991 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:44,991 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:28:44,991 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:28:45,015 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:28:45,148 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:28:45,148 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:28:45,148 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 20:28:45,154 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:28:45,217 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:28:45,226 INFO ]: Computing forward predicates... [2018-06-24 20:28:45,378 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:28:45,399 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:28:45,400 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-24 20:28:45,400 INFO ]: Interpolant automaton has 10 states [2018-06-24 20:28:45,400 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-24 20:28:45,400 INFO ]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-06-24 20:28:45,400 INFO ]: Start difference. First operand 2591 states and 9301 transitions. Second operand 10 states. [2018-06-24 20:28:46,213 WARN ]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-24 20:28:57,990 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:28:57,990 INFO ]: Finished difference Result 5280 states and 29400 transitions. [2018-06-24 20:28:57,990 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-06-24 20:28:57,990 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-24 20:28:57,991 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:28:59,563 INFO ]: With dead ends: 5280 [2018-06-24 20:28:59,563 INFO ]: Without dead ends: 4457 [2018-06-24 20:28:59,564 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2018-06-24 20:28:59,566 INFO ]: Start minimizeSevpa. Operand 4457 states. Received shutdown request... [2018-06-24 20:29:00,273 WARN ]: Verification canceled [2018-06-24 20:29:00,275 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:29:00,276 WARN ]: Timeout [2018-06-24 20:29:00,276 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:29:00 BasicIcfg [2018-06-24 20:29:00,276 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:29:00,278 INFO ]: Toolchain (without parser) took 54264.48 ms. Allocated memory was 309.3 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 249.8 MB in the beginning and 813.1 MB in the end (delta: -563.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 3.6 GB. [2018-06-24 20:29:00,279 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:29:00,279 INFO ]: ChcToBoogie took 111.02 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 245.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:29:00,280 INFO ]: Boogie Preprocessor took 80.80 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:29:00,280 INFO ]: RCFGBuilder took 2102.22 ms. Allocated memory was 309.3 MB in the beginning and 324.0 MB in the end (delta: 14.7 MB). Free memory was 243.8 MB in the beginning and 283.4 MB in the end (delta: -39.6 MB). Peak memory consumption was 61.7 MB. Max. memory is 3.6 GB. [2018-06-24 20:29:00,281 INFO ]: BlockEncodingV2 took 783.14 ms. Allocated memory is still 324.0 MB. Free memory was 283.4 MB in the beginning and 240.2 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 3.6 GB. [2018-06-24 20:29:00,281 INFO ]: TraceAbstraction took 51174.95 ms. Allocated memory was 324.0 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 240.2 MB in the beginning and 813.1 MB in the end (delta: -572.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-24 20:29:00,290 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 145 locations, 278 edges - StatisticsResult: Encoded RCFG 135 locations, 267 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 111.02 ms. Allocated memory is still 309.3 MB. Free memory was 249.8 MB in the beginning and 245.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 80.80 ms. Allocated memory is still 309.3 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 2102.22 ms. Allocated memory was 309.3 MB in the beginning and 324.0 MB in the end (delta: 14.7 MB). Free memory was 243.8 MB in the beginning and 283.4 MB in the end (delta: -39.6 MB). Peak memory consumption was 61.7 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 783.14 ms. Allocated memory is still 324.0 MB. Free memory was 283.4 MB in the beginning and 240.2 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 51174.95 ms. Allocated memory was 324.0 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 240.2 MB in the beginning and 813.1 MB in the end (delta: -572.9 MB). Peak memory consumption was 1.4 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 executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 135 locations, 1 error locations. TIMEOUT Result, 51.1s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 40.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4983 SDtfs, 1185 SDslu, 8617 SDs, 0 SdLazy, 21372 SolverSat, 4003 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2591occurred in iteration=7, 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: 7.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 4312 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1482 SizeOfPredicates, 10 NumberOfNonLiveVariables, 449 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 14/16 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/graham-scan.30.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-29-00-307.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan.30.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-29-00-307.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan.30.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-29-00-307.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham-scan.30.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-29-00-307.csv Completed graceful shutdown