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/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-27 02:45:53,578 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-27 02:45:53,582 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-27 02:45:53,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-27 02:45:53,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-27 02:45:53,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-27 02:45:53,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-27 02:45:53,607 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-27 02:45:53,609 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-27 02:45:53,611 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-27 02:45:53,612 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-27 02:45:53,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-27 02:45:53,613 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-27 02:45:53,613 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-27 02:45:53,617 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-27 02:45:53,617 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-27 02:45:53,618 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-27 02:45:53,628 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-27 02:45:53,630 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-27 02:45:53,632 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-27 02:45:53,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-27 02:45:53,640 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-27 02:45:53,642 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-27 02:45:53,642 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-27 02:45:53,642 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-27 02:45:53,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-27 02:45:53,649 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-27 02:45:53,649 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-27 02:45:53,650 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-27 02:45:53,651 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-27 02:45:53,651 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-27 02:45:53,656 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-27 02:45:53,656 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-27 02:45:53,656 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-27 02:45:53,657 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-27 02:45:53,658 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-27 02:45:53,658 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-27 02:45:53,681 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-27 02:45:53,681 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-27 02:45:53,682 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-27 02:45:53,682 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-27 02:45:53,683 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-27 02:45:53,683 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-27 02:45:53,683 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-27 02:45:53,683 INFO L133 SettingsManager]: * Use SBE=true [2018-06-27 02:45:53,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-27 02:45:53,685 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-27 02:45:53,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-27 02:45:53,685 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-27 02:45:53,685 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-27 02:45:53,686 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-27 02:45:53,686 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-27 02:45:53,686 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-27 02:45:53,686 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-27 02:45:53,686 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-27 02:45:53,687 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-27 02:45:53,687 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-27 02:45:53,687 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-27 02:45:53,688 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-27 02:45:53,689 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-27 02:45:53,733 INFO ]: Repository-Root is: /tmp [2018-06-27 02:45:53,749 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-27 02:45:53,754 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-27 02:45:53,756 INFO ]: Initializing SmtParser... [2018-06-27 02:45:53,756 INFO ]: SmtParser initialized [2018-06-27 02:45:53,756 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 [2018-06-27 02:45:53,758 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 [2018-06-27 02:45:53,841 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 unknown [2018-06-27 02:45:54,212 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt_e3_507.smt2 [2018-06-27 02:45:54,215 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-27 02:45:54,222 INFO ]: Walking toolchain with 5 elements. [2018-06-27 02:45:54,222 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-27 02:45:54,222 INFO ]: Initializing ChcToBoogie... [2018-06-27 02:45:54,222 INFO ]: ChcToBoogie initialized [2018-06-27 02:45:54,227 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 27.06 02:45:54" (1/1) ... [2018-06-27 02:45:54,288 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54 Unit [2018-06-27 02:45:54,288 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-27 02:45:54,289 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-27 02:45:54,289 INFO ]: Initializing Boogie Preprocessor... [2018-06-27 02:45:54,289 INFO ]: Boogie Preprocessor initialized [2018-06-27 02:45:54,309 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54" (1/1) ... [2018-06-27 02:45:54,309 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54" (1/1) ... [2018-06-27 02:45:54,318 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54" (1/1) ... [2018-06-27 02:45:54,318 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54" (1/1) ... [2018-06-27 02:45:54,334 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54" (1/1) ... [2018-06-27 02:45:54,336 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54" (1/1) ... [2018-06-27 02:45:54,337 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54" (1/1) ... [2018-06-27 02:45:54,340 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-27 02:45:54,340 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-27 02:45:54,341 INFO ]: Initializing RCFGBuilder... [2018-06-27 02:45:54,341 INFO ]: RCFGBuilder initialized [2018-06-27 02:45:54,341 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54" (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) [2018-06-27 02:45:54,367 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-27 02:45:54,367 INFO ]: Found specification of procedure gotoProc [2018-06-27 02:45:54,367 INFO ]: Found implementation of procedure gotoProc [2018-06-27 02:45:54,367 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-27 02:45:54,367 INFO ]: Found specification of procedure Ultimate.START [2018-06-27 02:45:54,367 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 [2018-06-27 02:45:54,745 INFO ]: Using library mode [2018-06-27 02:45:54,746 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 02:45:54 BoogieIcfgContainer [2018-06-27 02:45:54,746 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-27 02:45:54,746 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-27 02:45:54,747 INFO ]: Initializing BlockEncodingV2... [2018-06-27 02:45:54,754 INFO ]: BlockEncodingV2 initialized [2018-06-27 02:45:54,754 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 02:45:54" (1/1) ... [2018-06-27 02:45:54,773 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-27 02:45:54,774 INFO ]: Using Remove infeasible edges [2018-06-27 02:45:54,775 INFO ]: Using Maximize final states [2018-06-27 02:45:54,776 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-27 02:45:54,776 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-27 02:45:54,777 INFO ]: Using Remove sink states [2018-06-27 02:45:54,778 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-27 02:45:54,778 INFO ]: Using Use SBE [2018-06-27 02:45:54,787 WARN ]: expecting exponential blowup for input size 13 [2018-06-27 02:45:56,191 WARN ]: expecting exponential blowup for input size 14 [2018-06-27 02:46:01,052 WARN ]: aborting because of expected exponential blowup for input size 54 [2018-06-27 02:46:01,425 WARN ]: aborting because of expected exponential blowup for input size 54 [2018-06-27 02:46:01,444 INFO ]: SBE split 2 edges [2018-06-27 02:46:01,516 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-27 02:46:01,519 INFO ]: 0 new accepting states [2018-06-27 02:46:28,536 INFO ]: Removed 4486 edges and 2 locations by large block encoding [2018-06-27 02:46:28,539 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-27 02:46:29,083 INFO ]: Removed 18 edges and 0 locations because of local infeasibility [2018-06-27 02:46:29,086 INFO ]: 0 new accepting states [2018-06-27 02:46:29,113 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-27 02:46:29,114 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-27 02:46:29,209 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-27 02:46:29,211 INFO ]: 0 new accepting states [2018-06-27 02:46:29,214 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-27 02:46:29,214 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-27 02:46:29,349 INFO ]: Encoded RCFG 6 locations, 4470 edges [2018-06-27 02:46:29,350 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 27.06 02:46:29 BasicIcfg [2018-06-27 02:46:29,350 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-27 02:46:29,351 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-27 02:46:29,351 INFO ]: Initializing TraceAbstraction... [2018-06-27 02:46:29,354 INFO ]: TraceAbstraction initialized [2018-06-27 02:46:29,354 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 27.06 02:45:54" (1/4) ... [2018-06-27 02:46:29,356 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5714b1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 27.06 02:46:29, skipping insertion in model container [2018-06-27 02:46:29,356 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 27.06 02:45:54" (2/4) ... [2018-06-27 02:46:29,356 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5714b1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 02:46:29, skipping insertion in model container [2018-06-27 02:46:29,356 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 02:45:54" (3/4) ... [2018-06-27 02:46:29,356 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5714b1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 02:46:29, skipping insertion in model container [2018-06-27 02:46:29,356 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 27.06 02:46:29" (4/4) ... [2018-06-27 02:46:29,358 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-27 02:46:29,369 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-27 02:46:29,377 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-27 02:46:29,422 INFO ]: Using default assertion order modulation [2018-06-27 02:46:29,423 INFO ]: Interprodecural is true [2018-06-27 02:46:29,423 INFO ]: Hoare is false [2018-06-27 02:46:29,423 INFO ]: Compute interpolants for FPandBP [2018-06-27 02:46:29,423 INFO ]: Backedges is TWOTRACK [2018-06-27 02:46:29,423 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-27 02:46:29,423 INFO ]: Difference is false [2018-06-27 02:46:29,423 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-27 02:46:29,423 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-27 02:46:29,454 INFO ]: Start isEmpty. Operand 6 states. [2018-06-27 02:46:29,488 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-27 02:46:29,488 INFO ]: Found error trace [2018-06-27 02:46:29,489 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-27 02:46:29,489 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-27 02:46:29,495 INFO ]: Analyzing trace with hash 287508419, now seen corresponding path program 1 times [2018-06-27 02:46:29,497 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-27 02:46:29,497 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-27 02:46:29,544 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:46:29,545 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-27 02:46:29,545 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:46:29,600 INFO ]: Conjunction of SSA is unsat [2018-06-27 02:46:29,727 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-27 02:46:29,730 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-27 02:46:29,730 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-27 02:46:29,731 INFO ]: Interpolant automaton has 3 states [2018-06-27 02:46:29,747 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-27 02:46:29,747 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-27 02:46:29,749 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-27 02:46:37,537 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-27 02:46:37,537 INFO ]: Finished difference Result 8 states and 4526 transitions. [2018-06-27 02:46:37,538 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-27 02:46:37,539 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-27 02:46:37,539 INFO ]: Finished accepts. some prefix is accepted. [2018-06-27 02:46:37,572 INFO ]: With dead ends: 8 [2018-06-27 02:46:37,573 INFO ]: Without dead ends: 8 [2018-06-27 02:46:37,574 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 [2018-06-27 02:46:37,589 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-27 02:46:37,673 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-06-27 02:46:37,675 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-27 02:46:37,685 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4525 transitions. [2018-06-27 02:46:37,686 INFO ]: Start accepts. Automaton has 7 states and 4525 transitions. Word has length 5 [2018-06-27 02:46:37,687 INFO ]: Finished accepts. word is rejected. [2018-06-27 02:46:37,687 INFO ]: Abstraction has 7 states and 4525 transitions. [2018-06-27 02:46:37,687 INFO ]: Interpolant automaton has 3 states. [2018-06-27 02:46:37,687 INFO ]: Start isEmpty. Operand 7 states and 4525 transitions. [2018-06-27 02:46:37,690 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-27 02:46:37,690 INFO ]: Found error trace [2018-06-27 02:46:37,690 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-27 02:46:37,690 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-27 02:46:37,690 INFO ]: Analyzing trace with hash 287510341, now seen corresponding path program 1 times [2018-06-27 02:46:37,690 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-27 02:46:37,690 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-27 02:46:37,691 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:46:37,691 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-27 02:46:37,691 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:46:37,720 INFO ]: Conjunction of SSA is unsat [2018-06-27 02:46:37,744 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-27 02:46:37,744 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-27 02:46:37,745 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-27 02:46:37,746 INFO ]: Interpolant automaton has 3 states [2018-06-27 02:46:37,746 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-27 02:46:37,746 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-27 02:46:37,746 INFO ]: Start difference. First operand 7 states and 4525 transitions. Second operand 3 states. [2018-06-27 02:46:46,138 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-27 02:46:46,138 INFO ]: Finished difference Result 10 states and 4712 transitions. [2018-06-27 02:46:46,161 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-27 02:46:46,161 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-27 02:46:46,161 INFO ]: Finished accepts. some prefix is accepted. [2018-06-27 02:46:46,168 INFO ]: With dead ends: 10 [2018-06-27 02:46:46,168 INFO ]: Without dead ends: 10 [2018-06-27 02:46:46,168 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 [2018-06-27 02:46:46,169 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-27 02:46:46,190 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-27 02:46:46,190 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-27 02:46:46,199 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4711 transitions. [2018-06-27 02:46:46,199 INFO ]: Start accepts. Automaton has 9 states and 4711 transitions. Word has length 5 [2018-06-27 02:46:46,200 INFO ]: Finished accepts. word is rejected. [2018-06-27 02:46:46,200 INFO ]: Abstraction has 9 states and 4711 transitions. [2018-06-27 02:46:46,200 INFO ]: Interpolant automaton has 3 states. [2018-06-27 02:46:46,200 INFO ]: Start isEmpty. Operand 9 states and 4711 transitions. [2018-06-27 02:46:46,202 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-27 02:46:46,202 INFO ]: Found error trace [2018-06-27 02:46:46,202 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-27 02:46:46,202 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-27 02:46:46,202 INFO ]: Analyzing trace with hash 287540132, now seen corresponding path program 1 times [2018-06-27 02:46:46,202 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-27 02:46:46,202 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-27 02:46:46,203 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:46:46,203 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-27 02:46:46,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-27 02:46:46,224 INFO ]: Conjunction of SSA is unsat [2018-06-27 02:46:46,299 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-27 02:46:46,299 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-27 02:46:46,299 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-27 02:46:46,299 INFO ]: Interpolant automaton has 3 states [2018-06-27 02:46:46,299 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-27 02:46:46,299 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-27 02:46:46,299 INFO ]: Start difference. First operand 9 states and 4711 transitions. Second operand 3 states. Received shutdown request... [2018-06-27 02:46:51,890 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-27 02:46:51,891 WARN ]: Verification canceled [2018-06-27 02:46:51,893 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-27 02:46:51,894 WARN ]: Timeout [2018-06-27 02:46:51,894 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 02:46:51 BasicIcfg [2018-06-27 02:46:51,894 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-27 02:46:51,895 INFO ]: Toolchain (without parser) took 57679.38 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 255.7 MB in the beginning and 586.6 MB in the end (delta: -330.9 MB). Peak memory consumption was 817.3 MB. Max. memory is 3.6 GB. [2018-06-27 02:46:51,896 INFO ]: SmtParser took 0.06 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. [2018-06-27 02:46:51,897 INFO ]: ChcToBoogie took 66.24 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-27 02:46:51,897 INFO ]: Boogie Preprocessor took 51.29 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 251.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-27 02:46:51,898 INFO ]: RCFGBuilder took 405.64 ms. Allocated memory is still 309.3 MB. Free memory was 251.7 MB in the beginning and 229.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 3.6 GB. [2018-06-27 02:46:51,899 INFO ]: BlockEncodingV2 took 34603.16 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 229.8 MB in the beginning and 773.9 MB in the end (delta: -544.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 3.6 GB. [2018-06-27 02:46:51,901 INFO ]: TraceAbstraction took 22543.18 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -45.6 MB). Free memory was 773.9 MB in the beginning and 586.6 MB in the end (delta: 187.2 MB). Peak memory consumption was 141.6 MB. Max. memory is 3.6 GB. [2018-06-27 02:46:51,915 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 10 edges - StatisticsResult: Encoded RCFG 6 locations, 4470 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 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 66.24 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 51.29 ms. Allocated memory is still 309.3 MB. Free memory was 253.7 MB in the beginning and 251.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 405.64 ms. Allocated memory is still 309.3 MB. Free memory was 251.7 MB in the beginning and 229.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 34603.16 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 229.8 MB in the beginning and 773.9 MB in the end (delta: -544.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 3.6 GB. * TraceAbstraction took 22543.18 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -45.6 MB). Free memory was 773.9 MB in the beginning and 586.6 MB in the end (delta: 187.2 MB). Peak memory consumption was 141.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (9states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (2 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 22.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 21.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12798 SDtfs, 238 SDslu, 8 SDs, 0 SdLazy, 6888 SolverSat, 6880 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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/PRODUCER_CONSUMER_vt_e3_507.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-27_02-46-51-927.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e3_507.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-27_02-46-51-927.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e3_507.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-27_02-46-51-927.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt_e3_507.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-27_02-46-51-927.csv Completed graceful shutdown