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/reve/017b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:05:15,685 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:05:15,687 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:05:15,702 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:05:15,702 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:05:15,704 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:05:15,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:05:15,707 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:05:15,708 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:05:15,710 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:05:15,710 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:05:15,711 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:05:15,712 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:05:15,712 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:05:15,716 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:05:15,717 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:05:15,718 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:05:15,731 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:05:15,732 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:05:15,733 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:05:15,734 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:05:15,738 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:05:15,738 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:05:15,738 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:05:15,739 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:05:15,740 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:05:15,741 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:05:15,741 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:05:15,742 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:05:15,742 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:05:15,748 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:05:15,749 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:05:15,749 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:05:15,750 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:05:15,750 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:05:15,751 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:05:15,763 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:05:15,763 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:05:15,764 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:05:15,764 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:05:15,765 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:05:15,765 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:05:15,765 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:05:15,765 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:05:15,766 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:05:15,767 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:05:15,767 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:05:15,767 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:05:15,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:05:15,768 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:05:15,768 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:05:15,768 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:05:15,768 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:05:15,769 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:05:15,769 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:05:15,769 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:05:15,769 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:05:15,770 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:05:15,771 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:05:15,820 INFO ]: Repository-Root is: /tmp [2018-06-24 21:05:15,837 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:05:15,841 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:05:15,842 INFO ]: Initializing SmtParser... [2018-06-24 21:05:15,842 INFO ]: SmtParser initialized [2018-06-24 21:05:15,843 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/017b-horn.smt2 [2018-06-24 21:05:15,843 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:05:15,937 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/017b-horn.smt2 unknown [2018-06-24 21:05:16,111 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/017b-horn.smt2 [2018-06-24 21:05:16,115 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:05:16,126 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:05:16,126 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:05:16,126 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:05:16,126 INFO ]: ChcToBoogie initialized [2018-06-24 21:05:16,129 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:05:16" (1/1) ... [2018-06-24 21:05:16,188 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16 Unit [2018-06-24 21:05:16,188 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:05:16,191 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:05:16,191 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:05:16,191 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:05:16,215 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16" (1/1) ... [2018-06-24 21:05:16,215 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16" (1/1) ... [2018-06-24 21:05:16,221 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16" (1/1) ... [2018-06-24 21:05:16,221 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16" (1/1) ... [2018-06-24 21:05:16,225 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16" (1/1) ... [2018-06-24 21:05:16,226 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16" (1/1) ... [2018-06-24 21:05:16,228 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16" (1/1) ... [2018-06-24 21:05:16,229 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:05:16,230 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:05:16,230 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:05:16,230 INFO ]: RCFGBuilder initialized [2018-06-24 21:05:16,232 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:05:16,246 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:05:16,246 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:05:16,246 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:05:16,246 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:05:16,246 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:05:16,246 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:05:16,505 INFO ]: Using library mode [2018-06-24 21:05:16,506 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:05:16 BoogieIcfgContainer [2018-06-24 21:05:16,506 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:05:16,506 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:05:16,506 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:05:16,507 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:05:16,508 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:05:16" (1/1) ... [2018-06-24 21:05:16,539 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-24 21:05:16,541 INFO ]: Using Remove infeasible edges [2018-06-24 21:05:16,542 INFO ]: Using Maximize final states [2018-06-24 21:05:16,542 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:05:16,543 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:05:16,547 INFO ]: Using Remove sink states [2018-06-24 21:05:16,548 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:05:16,548 INFO ]: Using Use SBE [2018-06-24 21:05:16,557 INFO ]: SBE split 0 edges [2018-06-24 21:05:16,563 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:05:16,565 INFO ]: 0 new accepting states [2018-06-24 21:05:16,608 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:05:16,610 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:05:16,614 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:05:16,614 INFO ]: 0 new accepting states [2018-06-24 21:05:16,614 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:05:16,615 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:05:16,615 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:05:16,615 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:05:16 BasicIcfg [2018-06-24 21:05:16,615 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:05:16,617 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:05:16,617 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:05:16,621 INFO ]: TraceAbstraction initialized [2018-06-24 21:05:16,621 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:05:16" (1/4) ... [2018-06-24 21:05:16,622 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d2495c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:05:16, skipping insertion in model container [2018-06-24 21:05:16,622 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:05:16" (2/4) ... [2018-06-24 21:05:16,622 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d2495c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:05:16, skipping insertion in model container [2018-06-24 21:05:16,622 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:05:16" (3/4) ... [2018-06-24 21:05:16,622 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d2495c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:05:16, skipping insertion in model container [2018-06-24 21:05:16,623 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:05:16" (4/4) ... [2018-06-24 21:05:16,624 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:05:16,633 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:05:16,641 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:05:16,689 INFO ]: Using default assertion order modulation [2018-06-24 21:05:16,690 INFO ]: Interprodecural is true [2018-06-24 21:05:16,690 INFO ]: Hoare is false [2018-06-24 21:05:16,690 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:05:16,690 INFO ]: Backedges is TWOTRACK [2018-06-24 21:05:16,690 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:05:16,690 INFO ]: Difference is false [2018-06-24 21:05:16,690 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:05:16,690 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:05:16,700 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:05:16,709 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:05:16,709 INFO ]: Found error trace [2018-06-24 21:05:16,710 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:05:16,710 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:05:16,714 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-24 21:05:16,715 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:05:16,716 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:05:16,748 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:16,748 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:16,748 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:16,798 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:16,900 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:16,902 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:05:16,902 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:05:16,903 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:05:16,916 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:05:16,916 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:05:16,919 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:05:16,984 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:05:16,984 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-24 21:05:16,984 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:05:16,985 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:05:16,985 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:05:16,992 INFO ]: With dead ends: 7 [2018-06-24 21:05:16,992 INFO ]: Without dead ends: 7 [2018-06-24 21:05:16,995 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:05:17,008 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:05:17,037 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:05:17,038 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:05:17,039 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:05:17,040 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:05:17,040 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:05:17,040 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:05:17,040 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:05:17,040 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:05:17,041 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:05:17,041 INFO ]: Found error trace [2018-06-24 21:05:17,041 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:05:17,041 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:05:17,041 INFO ]: Analyzing trace with hash 1156261132, now seen corresponding path program 1 times [2018-06-24 21:05:17,041 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:05:17,041 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:05:17,042 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:17,042 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:17,042 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:17,069 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:17,372 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:17,373 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:05:17,373 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:05:17,380 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:17,426 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:17,434 INFO ]: Computing forward predicates... [2018-06-24 21:05:17,645 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:17,665 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:05:17,665 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-06-24 21:05:17,666 INFO ]: Interpolant automaton has 6 states [2018-06-24 21:05:17,666 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 21:05:17,666 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:05:17,666 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 6 states. [2018-06-24 21:05:17,887 WARN ]: Spent 188.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-06-24 21:05:18,007 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:05:18,007 INFO ]: Finished difference Result 9 states and 15 transitions. [2018-06-24 21:05:18,008 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:05:18,008 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-24 21:05:18,008 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:05:18,008 INFO ]: With dead ends: 9 [2018-06-24 21:05:18,008 INFO ]: Without dead ends: 7 [2018-06-24 21:05:18,009 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:05:18,009 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:05:18,010 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:05:18,010 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:05:18,010 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-06-24 21:05:18,010 INFO ]: Start accepts. Automaton has 7 states and 9 transitions. Word has length 6 [2018-06-24 21:05:18,010 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:05:18,010 INFO ]: Abstraction has 7 states and 9 transitions. [2018-06-24 21:05:18,010 INFO ]: Interpolant automaton has 6 states. [2018-06-24 21:05:18,010 INFO ]: Start isEmpty. Operand 7 states and 9 transitions. [2018-06-24 21:05:18,011 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:05:18,011 INFO ]: Found error trace [2018-06-24 21:05:18,011 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:05:18,011 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:05:18,011 INFO ]: Analyzing trace with hash 1156290923, now seen corresponding path program 1 times [2018-06-24 21:05:18,011 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:05:18,011 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:05:18,012 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:18,012 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:18,012 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:18,024 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:18,095 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:18,095 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:05:18,095 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:05:18,102 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:18,121 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:18,122 INFO ]: Computing forward predicates... [2018-06-24 21:05:18,177 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:18,200 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:05:18,200 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-06-24 21:05:18,200 INFO ]: Interpolant automaton has 6 states [2018-06-24 21:05:18,201 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 21:05:18,201 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:05:18,202 INFO ]: Start difference. First operand 7 states and 9 transitions. Second operand 6 states. [2018-06-24 21:05:18,570 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-06-24 21:05:18,624 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:05:18,625 INFO ]: Finished difference Result 9 states and 13 transitions. [2018-06-24 21:05:18,625 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:05:18,625 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-24 21:05:18,625 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:05:18,625 INFO ]: With dead ends: 9 [2018-06-24 21:05:18,625 INFO ]: Without dead ends: 7 [2018-06-24 21:05:18,626 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:05:18,626 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:05:18,627 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:05:18,627 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:05:18,627 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-06-24 21:05:18,627 INFO ]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2018-06-24 21:05:18,627 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:05:18,627 INFO ]: Abstraction has 7 states and 7 transitions. [2018-06-24 21:05:18,627 INFO ]: Interpolant automaton has 6 states. [2018-06-24 21:05:18,627 INFO ]: Start isEmpty. Operand 7 states and 7 transitions. [2018-06-24 21:05:18,627 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:05:18,627 INFO ]: Found error trace [2018-06-24 21:05:18,627 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:05:18,627 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:05:18,628 INFO ]: Analyzing trace with hash 1156320714, now seen corresponding path program 1 times [2018-06-24 21:05:18,628 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:05:18,628 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:05:18,628 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:18,628 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:18,628 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:05:18,668 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:18,808 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:05:18,808 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:05:18,808 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:05:18,818 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:05:18,850 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:05:18,851 INFO ]: Computing forward predicates... [2018-06-24 21:05:18,887 INFO ]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:05:18,908 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:05:18,908 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 21:05:18,908 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:05:18,908 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:05:18,908 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:05:18,908 INFO ]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-06-24 21:05:19,257 WARN ]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-06-24 21:05:19,285 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:05:19,285 INFO ]: Finished difference Result 5 states and 5 transitions. [2018-06-24 21:05:19,285 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 21:05:19,285 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:05:19,285 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:05:19,285 INFO ]: With dead ends: 5 [2018-06-24 21:05:19,285 INFO ]: Without dead ends: 0 [2018-06-24 21:05:19,286 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:05:19,286 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:05:19,286 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:05:19,286 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:05:19,286 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:05:19,286 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-06-24 21:05:19,286 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:05:19,286 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:05:19,286 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:05:19,286 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:05:19,286 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:05:19,288 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:05:19,289 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:05:19 BasicIcfg [2018-06-24 21:05:19,289 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:05:19,290 INFO ]: Toolchain (without parser) took 3174.27 ms. Allocated memory was 306.2 MB in the beginning and 325.1 MB in the end (delta: 18.9 MB). Free memory was 260.6 MB in the beginning and 270.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:19,291 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 306.2 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:05:19,291 INFO ]: ChcToBoogie took 64.14 ms. Allocated memory is still 306.2 MB. Free memory was 260.6 MB in the beginning and 258.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:19,292 INFO ]: Boogie Preprocessor took 38.74 ms. Allocated memory is still 306.2 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:19,292 INFO ]: RCFGBuilder took 276.03 ms. Allocated memory is still 306.2 MB. Free memory was 256.6 MB in the beginning and 248.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:19,293 INFO ]: BlockEncodingV2 took 109.16 ms. Allocated memory is still 306.2 MB. Free memory was 248.5 MB in the beginning and 245.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:05:19,294 INFO ]: TraceAbstraction took 2671.89 ms. Allocated memory was 306.2 MB in the beginning and 325.1 MB in the end (delta: 18.9 MB). Free memory was 245.5 MB in the beginning and 270.2 MB in the end (delta: -24.7 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:05:19,297 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 12 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.05 ms. Allocated memory is still 306.2 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.14 ms. Allocated memory is still 306.2 MB. Free memory was 260.6 MB in the beginning and 258.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.74 ms. Allocated memory is still 306.2 MB. Free memory was 258.6 MB in the beginning and 256.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 276.03 ms. Allocated memory is still 306.2 MB. Free memory was 256.6 MB in the beginning and 248.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 109.16 ms. Allocated memory is still 306.2 MB. Free memory was 248.5 MB in the beginning and 245.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2671.89 ms. Allocated memory was 306.2 MB in the beginning and 325.1 MB in the end (delta: 18.9 MB). Free memory was 245.5 MB in the beginning and 270.2 MB in the end (delta: -24.7 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, 6 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 1 SDslu, 21 SDs, 0 SdLazy, 39 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 831 SizeOfPredicates, 10 NumberOfNonLiveVariables, 259 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/6 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/017b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-05-19-309.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/017b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-05-19-309.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/017b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-05-19-309.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/017b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-05-19-309.csv Received shutdown request...