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/HOLA/08.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:39:23,702 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:39:23,705 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:39:23,718 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:39:23,719 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:39:23,720 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:39:23,721 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:39:23,723 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:39:23,725 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:39:23,725 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:39:23,727 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:39:23,727 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:39:23,728 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:39:23,729 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:39:23,732 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:39:23,733 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:39:23,734 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:39:23,736 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:39:23,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:39:23,738 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:39:23,739 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:39:23,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:39:23,742 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:39:23,742 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:39:23,743 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:39:23,744 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:39:23,745 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:39:23,745 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:39:23,746 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:39:23,747 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:39:23,747 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:39:23,748 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:39:23,748 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:39:23,749 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:39:23,749 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:39:23,750 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:39:23,763 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:39:23,764 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:39:23,764 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:39:23,764 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:39:23,765 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:39:23,765 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:39:23,765 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:39:23,766 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:39:23,766 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:39:23,766 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:39:23,766 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:39:23,766 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:39:23,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:39:23,767 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:39:23,767 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:39:23,767 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:39:23,767 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:39:23,768 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:39:23,768 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:39:23,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:39:23,768 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:39:23,769 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:39:23,770 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:39:23,808 INFO ]: Repository-Root is: /tmp [2018-06-24 20:39:23,827 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:39:23,833 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:39:23,834 INFO ]: Initializing SmtParser... [2018-06-24 20:39:23,834 INFO ]: SmtParser initialized [2018-06-24 20:39:23,835 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/08.c.smt2 [2018-06-24 20:39:23,836 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 20:39:23,924 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/08.c.smt2 unknown [2018-06-24 20:39:24,426 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/08.c.smt2 [2018-06-24 20:39:24,431 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:39:24,444 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:39:24,445 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:39:24,445 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:39:24,445 INFO ]: ChcToBoogie initialized [2018-06-24 20:39:24,458 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:24" (1/1) ... [2018-06-24 20:39:24,565 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24 Unit [2018-06-24 20:39:24,565 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:39:24,566 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:39:24,566 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:39:24,566 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:39:24,586 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24" (1/1) ... [2018-06-24 20:39:24,586 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24" (1/1) ... [2018-06-24 20:39:24,598 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24" (1/1) ... [2018-06-24 20:39:24,598 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24" (1/1) ... [2018-06-24 20:39:24,612 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24" (1/1) ... [2018-06-24 20:39:24,614 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24" (1/1) ... [2018-06-24 20:39:24,620 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24" (1/1) ... [2018-06-24 20:39:24,624 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:39:24,624 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:39:24,624 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:39:24,625 INFO ]: RCFGBuilder initialized [2018-06-24 20:39:24,625 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24" (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 20:39:24,649 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:39:24,649 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:39:24,649 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:39:24,649 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:39:24,649 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:39:24,649 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 20:39:25,429 INFO ]: Using library mode [2018-06-24 20:39:25,430 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:25 BoogieIcfgContainer [2018-06-24 20:39:25,430 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:39:25,430 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:39:25,430 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:39:25,432 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:39:25,433 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:25" (1/1) ... [2018-06-24 20:39:25,453 INFO ]: Initial Icfg 47 locations, 54 edges [2018-06-24 20:39:25,454 INFO ]: Using Remove infeasible edges [2018-06-24 20:39:25,455 INFO ]: Using Maximize final states [2018-06-24 20:39:25,455 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:39:25,455 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:39:25,459 INFO ]: Using Remove sink states [2018-06-24 20:39:25,460 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:39:25,460 INFO ]: Using Use SBE [2018-06-24 20:39:25,475 INFO ]: SBE split 0 edges [2018-06-24 20:39:25,497 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:39:25,499 INFO ]: 0 new accepting states [2018-06-24 20:39:26,473 INFO ]: Removed 96 edges and 37 locations by large block encoding [2018-06-24 20:39:26,475 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:26,478 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-24 20:39:26,478 INFO ]: 0 new accepting states [2018-06-24 20:39:26,478 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:39:26,478 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:26,479 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:39:26,479 INFO ]: 0 new accepting states [2018-06-24 20:39:26,479 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:39:26,479 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:26,479 INFO ]: Encoded RCFG 8 locations, 15 edges [2018-06-24 20:39:26,479 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:26 BasicIcfg [2018-06-24 20:39:26,480 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:39:26,481 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:39:26,481 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:39:26,484 INFO ]: TraceAbstraction initialized [2018-06-24 20:39:26,484 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:24" (1/4) ... [2018-06-24 20:39:26,485 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e3dab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:39:26, skipping insertion in model container [2018-06-24 20:39:26,485 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:24" (2/4) ... [2018-06-24 20:39:26,485 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e3dab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:39:26, skipping insertion in model container [2018-06-24 20:39:26,485 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:25" (3/4) ... [2018-06-24 20:39:26,485 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e3dab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:26, skipping insertion in model container [2018-06-24 20:39:26,485 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:26" (4/4) ... [2018-06-24 20:39:26,487 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:39:26,496 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:39:26,503 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:39:26,555 INFO ]: Using default assertion order modulation [2018-06-24 20:39:26,556 INFO ]: Interprodecural is true [2018-06-24 20:39:26,556 INFO ]: Hoare is false [2018-06-24 20:39:26,556 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:39:26,556 INFO ]: Backedges is TWOTRACK [2018-06-24 20:39:26,556 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:39:26,556 INFO ]: Difference is false [2018-06-24 20:39:26,556 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:39:26,556 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:39:26,569 INFO ]: Start isEmpty. Operand 8 states. [2018-06-24 20:39:26,591 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:39:26,591 INFO ]: Found error trace [2018-06-24 20:39:26,592 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:39:26,592 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:26,600 INFO ]: Analyzing trace with hash 39255657, now seen corresponding path program 1 times [2018-06-24 20:39:26,602 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:26,602 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:26,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:26,649 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:26,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:26,724 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:26,820 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:26,822 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:26,822 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:39:26,823 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:39:26,835 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:39:26,835 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:26,837 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-24 20:39:26,986 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:26,986 INFO ]: Finished difference Result 11 states and 25 transitions. [2018-06-24 20:39:26,987 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:39:26,988 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:39:26,988 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:26,998 INFO ]: With dead ends: 11 [2018-06-24 20:39:26,998 INFO ]: Without dead ends: 11 [2018-06-24 20:39:27,000 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 20:39:27,015 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:39:27,032 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-24 20:39:27,033 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:39:27,033 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 21 transitions. [2018-06-24 20:39:27,035 INFO ]: Start accepts. Automaton has 9 states and 21 transitions. Word has length 5 [2018-06-24 20:39:27,035 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:27,036 INFO ]: Abstraction has 9 states and 21 transitions. [2018-06-24 20:39:27,036 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:39:27,036 INFO ]: Start isEmpty. Operand 9 states and 21 transitions. [2018-06-24 20:39:27,036 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:39:27,036 INFO ]: Found error trace [2018-06-24 20:39:27,036 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:27,036 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:27,036 INFO ]: Analyzing trace with hash -952386794, now seen corresponding path program 1 times [2018-06-24 20:39:27,036 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:27,036 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:27,037 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:27,037 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:27,037 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:27,068 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:27,239 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:27,239 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:27,239 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 20:39:27,240 INFO ]: Interpolant automaton has 4 states [2018-06-24 20:39:27,240 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 20:39:27,240 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:39:27,241 INFO ]: Start difference. First operand 9 states and 21 transitions. Second operand 4 states. [2018-06-24 20:39:27,561 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:27,561 INFO ]: Finished difference Result 12 states and 25 transitions. [2018-06-24 20:39:27,561 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:39:27,561 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-24 20:39:27,561 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:27,562 INFO ]: With dead ends: 12 [2018-06-24 20:39:27,562 INFO ]: Without dead ends: 11 [2018-06-24 20:39:27,563 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:27,563 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:39:27,564 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-24 20:39:27,564 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:39:27,564 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 18 transitions. [2018-06-24 20:39:27,565 INFO ]: Start accepts. Automaton has 9 states and 18 transitions. Word has length 7 [2018-06-24 20:39:27,565 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:27,565 INFO ]: Abstraction has 9 states and 18 transitions. [2018-06-24 20:39:27,565 INFO ]: Interpolant automaton has 4 states. [2018-06-24 20:39:27,565 INFO ]: Start isEmpty. Operand 9 states and 18 transitions. [2018-06-24 20:39:27,565 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 20:39:27,565 INFO ]: Found error trace [2018-06-24 20:39:27,565 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:39:27,565 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:27,565 INFO ]: Analyzing trace with hash 860168080, now seen corresponding path program 1 times [2018-06-24 20:39:27,565 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:27,565 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:27,566 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:27,566 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:27,566 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:27,606 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:27,714 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:27,714 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:27,715 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:39:27,715 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:39:27,715 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:39:27,715 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:27,715 INFO ]: Start difference. First operand 9 states and 18 transitions. Second operand 5 states. [2018-06-24 20:39:27,815 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:27,815 INFO ]: Finished difference Result 5 states and 7 transitions. [2018-06-24 20:39:27,815 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:39:27,815 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-24 20:39:27,815 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:27,815 INFO ]: With dead ends: 5 [2018-06-24 20:39:27,815 INFO ]: Without dead ends: 0 [2018-06-24 20:39:27,816 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:39:27,816 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 20:39:27,816 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 20:39:27,816 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 20:39:27,816 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 20:39:27,816 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-24 20:39:27,816 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:27,816 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 20:39:27,816 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:39:27,816 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 20:39:27,816 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 20:39:27,818 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:39:27,819 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:27 BasicIcfg [2018-06-24 20:39:27,819 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:39:27,820 INFO ]: Toolchain (without parser) took 3388.96 ms. Allocated memory was 303.6 MB in the beginning and 354.9 MB in the end (delta: 51.4 MB). Free memory was 235.9 MB in the beginning and 319.7 MB in the end (delta: -83.8 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:39:27,821 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:39:27,822 INFO ]: ChcToBoogie took 120.65 ms. Allocated memory is still 303.6 MB. Free memory was 235.9 MB in the beginning and 232.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:27,822 INFO ]: Boogie Preprocessor took 57.90 ms. Allocated memory is still 303.6 MB. Free memory was 232.9 MB in the beginning and 231.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:27,823 INFO ]: RCFGBuilder took 805.26 ms. Allocated memory is still 303.6 MB. Free memory was 231.0 MB in the beginning and 187.3 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:27,823 INFO ]: BlockEncodingV2 took 1049.38 ms. Allocated memory was 303.6 MB in the beginning and 321.9 MB in the end (delta: 18.4 MB). Free memory was 187.3 MB in the beginning and 214.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 10.8 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:27,824 INFO ]: TraceAbstraction took 1338.60 ms. Allocated memory was 321.9 MB in the beginning and 354.9 MB in the end (delta: 33.0 MB). Free memory was 214.7 MB in the beginning and 319.7 MB in the end (delta: -105.1 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:39:27,827 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 47 locations, 54 edges - StatisticsResult: Encoded RCFG 8 locations, 15 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 120.65 ms. Allocated memory is still 303.6 MB. Free memory was 235.9 MB in the beginning and 232.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.90 ms. Allocated memory is still 303.6 MB. Free memory was 232.9 MB in the beginning and 231.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 805.26 ms. Allocated memory is still 303.6 MB. Free memory was 231.0 MB in the beginning and 187.3 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1049.38 ms. Allocated memory was 303.6 MB in the beginning and 321.9 MB in the end (delta: 18.4 MB). Free memory was 187.3 MB in the beginning and 214.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 10.8 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1338.60 ms. Allocated memory was 321.9 MB in the beginning and 354.9 MB in the end (delta: 33.0 MB). Free memory was 214.7 MB in the beginning and 319.7 MB in the end (delta: -105.1 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 8 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 23 SDslu, 20 SDs, 0 SdLazy, 46 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=1, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 179 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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/08.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-39-27-837.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/08.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-39-27-837.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/08.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-39-27-837.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/08.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-39-27-837.csv Received shutdown request...