java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.27.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:26:49,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:26:49,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:26:49,756 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:26:49,756 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:26:49,757 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:26:49,761 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:26:49,763 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:26:49,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:26:49,766 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:26:49,767 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:26:49,767 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:26:49,768 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:26:49,769 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:26:49,769 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:26:49,772 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:26:49,774 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:26:49,786 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:26:49,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:26:49,789 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:26:49,790 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:26:49,792 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:26:49,792 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:26:49,793 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:26:49,793 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:26:49,794 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:26:49,797 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:26:49,797 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:26:49,798 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:26:49,799 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:26:49,799 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:26:49,800 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:26:49,800 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:26:49,801 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:26:49,801 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:26:49,802 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:26:49,817 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:26:49,817 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:26:49,817 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:26:49,818 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:26:49,819 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:26:49,819 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:26:49,819 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:26:49,819 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:26:49,819 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:26:49,820 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:26:49,820 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:26:49,820 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:26:49,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:26:49,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:26:49,820 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:26:49,821 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:26:49,821 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:26:49,821 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:26:49,821 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:26:49,822 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:26:49,822 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:26:49,823 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:26:49,823 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:26:49,862 INFO ]: Repository-Root is: /tmp [2018-06-24 20:26:49,881 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:26:49,886 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:26:49,887 INFO ]: Initializing SmtParser... [2018-06-24 20:26:49,888 INFO ]: SmtParser initialized [2018-06-24 20:26:49,888 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.27.smt2 [2018-06-24 20:26:49,889 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 20:26:49,983 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.27.smt2 unknown [2018-06-24 20:26:50,443 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/graham.27.smt2 [2018-06-24 20:26:50,448 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:26:50,458 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:26:50,459 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:26:50,459 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:26:50,459 INFO ]: ChcToBoogie initialized [2018-06-24 20:26:50,462 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:26:50" (1/1) ... [2018-06-24 20:26:50,570 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50 Unit [2018-06-24 20:26:50,570 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:26:50,570 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:26:50,570 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:26:50,570 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:26:50,590 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50" (1/1) ... [2018-06-24 20:26:50,590 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50" (1/1) ... [2018-06-24 20:26:50,612 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50" (1/1) ... [2018-06-24 20:26:50,612 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50" (1/1) ... [2018-06-24 20:26:50,640 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50" (1/1) ... [2018-06-24 20:26:50,645 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50" (1/1) ... [2018-06-24 20:26:50,648 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50" (1/1) ... [2018-06-24 20:26:50,660 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:26:50,660 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:26:50,660 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:26:50,660 INFO ]: RCFGBuilder initialized [2018-06-24 20:26:50,661 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50" (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 20:26:50,676 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:26:50,676 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:26:50,676 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:26:50,676 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:26:50,676 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:26:50,676 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 20:26:52,136 INFO ]: Using library mode [2018-06-24 20:26:52,137 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:26:52 BoogieIcfgContainer [2018-06-24 20:26:52,137 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:26:52,137 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:26:52,137 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:26:52,139 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:26:52,140 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:26:52" (1/1) ... [2018-06-24 20:26:52,189 INFO ]: Initial Icfg 145 locations, 279 edges [2018-06-24 20:26:52,190 INFO ]: Using Remove infeasible edges [2018-06-24 20:26:52,190 INFO ]: Using Maximize final states [2018-06-24 20:26:52,191 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:26:52,191 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:26:52,195 INFO ]: Using Remove sink states [2018-06-24 20:26:52,195 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:26:52,195 INFO ]: Using Use SBE [2018-06-24 20:26:52,211 INFO ]: SBE split 0 edges [2018-06-24 20:26:52,218 INFO ]: Removed 4 edges and 2 locations because of local infeasibility [2018-06-24 20:26:52,220 INFO ]: 0 new accepting states [2018-06-24 20:26:52,726 INFO ]: Removed 39 edges and 6 locations by large block encoding [2018-06-24 20:26:52,729 INFO ]: Removed 7 edges and 4 locations by removing sink states [2018-06-24 20:26:52,733 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:26:52,734 INFO ]: 0 new accepting states [2018-06-24 20:26:52,736 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:26:52,738 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:26:52,739 INFO ]: Encoded RCFG 133 locations, 262 edges [2018-06-24 20:26:52,740 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:26:52 BasicIcfg [2018-06-24 20:26:52,740 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:26:52,741 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:26:52,741 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:26:52,744 INFO ]: TraceAbstraction initialized [2018-06-24 20:26:52,744 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:26:50" (1/4) ... [2018-06-24 20:26:52,745 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b696685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:26:52, skipping insertion in model container [2018-06-24 20:26:52,745 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:26:50" (2/4) ... [2018-06-24 20:26:52,745 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b696685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:26:52, skipping insertion in model container [2018-06-24 20:26:52,745 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:26:52" (3/4) ... [2018-06-24 20:26:52,745 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b696685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:26:52, skipping insertion in model container [2018-06-24 20:26:52,746 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:26:52" (4/4) ... [2018-06-24 20:26:52,748 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:26:52,756 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:26:52,769 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:26:52,820 INFO ]: Using default assertion order modulation [2018-06-24 20:26:52,821 INFO ]: Interprodecural is true [2018-06-24 20:26:52,821 INFO ]: Hoare is false [2018-06-24 20:26:52,821 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:26:52,821 INFO ]: Backedges is TWOTRACK [2018-06-24 20:26:52,821 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:26:52,821 INFO ]: Difference is false [2018-06-24 20:26:52,821 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:26:52,821 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:26:52,837 INFO ]: Start isEmpty. Operand 133 states. [2018-06-24 20:26:52,882 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:26:52,882 INFO ]: Found error trace [2018-06-24 20:26:52,883 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:26:52,883 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:26:52,889 INFO ]: Analyzing trace with hash 174853065, now seen corresponding path program 1 times [2018-06-24 20:26:52,890 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:26:52,890 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:26:52,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:52,923 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:26:52,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:53,010 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:26:53,201 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:26:53,203 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:26:53,203 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:26:53,205 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:26:53,217 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:26:53,217 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:26:53,221 INFO ]: Start difference. First operand 133 states. Second operand 3 states. [2018-06-24 20:26:55,357 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:26:55,357 INFO ]: Finished difference Result 263 states and 520 transitions. [2018-06-24 20:26:55,357 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:26:55,358 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:26:55,358 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:26:55,400 INFO ]: With dead ends: 263 [2018-06-24 20:26:55,400 INFO ]: Without dead ends: 259 [2018-06-24 20:26:55,402 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 20:26:55,420 INFO ]: Start minimizeSevpa. Operand 259 states. [2018-06-24 20:26:55,540 INFO ]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-06-24 20:26:55,541 INFO ]: Start removeUnreachable. Operand 259 states. [2018-06-24 20:26:55,561 INFO ]: Finished removeUnreachable. Reduced from 259 states to 259 states and 512 transitions. [2018-06-24 20:26:55,562 INFO ]: Start accepts. Automaton has 259 states and 512 transitions. Word has length 5 [2018-06-24 20:26:55,563 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:26:55,563 INFO ]: Abstraction has 259 states and 512 transitions. [2018-06-24 20:26:55,563 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:26:55,563 INFO ]: Start isEmpty. Operand 259 states and 512 transitions. [2018-06-24 20:26:55,573 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:26:55,573 INFO ]: Found error trace [2018-06-24 20:26:55,573 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:26:55,573 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:26:55,574 INFO ]: Analyzing trace with hash 174936672, now seen corresponding path program 1 times [2018-06-24 20:26:55,574 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:26:55,574 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:26:55,574 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:55,575 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:26:55,575 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:55,600 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:26:55,708 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:26:55,708 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:26:55,708 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:26:55,709 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:26:55,710 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:26:55,710 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:26:55,710 INFO ]: Start difference. First operand 259 states and 512 transitions. Second operand 3 states. [2018-06-24 20:26:57,355 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:26:57,355 INFO ]: Finished difference Result 387 states and 767 transitions. [2018-06-24 20:26:57,355 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:26:57,356 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:26:57,356 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:26:57,380 INFO ]: With dead ends: 387 [2018-06-24 20:26:57,380 INFO ]: Without dead ends: 387 [2018-06-24 20:26:57,381 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 20:26:57,382 INFO ]: Start minimizeSevpa. Operand 387 states. [2018-06-24 20:26:57,455 INFO ]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-06-24 20:26:57,455 INFO ]: Start removeUnreachable. Operand 387 states. [2018-06-24 20:26:57,471 INFO ]: Finished removeUnreachable. Reduced from 387 states to 387 states and 767 transitions. [2018-06-24 20:26:57,471 INFO ]: Start accepts. Automaton has 387 states and 767 transitions. Word has length 5 [2018-06-24 20:26:57,471 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:26:57,471 INFO ]: Abstraction has 387 states and 767 transitions. [2018-06-24 20:26:57,471 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:26:57,471 INFO ]: Start isEmpty. Operand 387 states and 767 transitions. [2018-06-24 20:26:57,507 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 20:26:57,507 INFO ]: Found error trace [2018-06-24 20:26:57,507 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:26:57,507 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:26:57,507 INFO ]: Analyzing trace with hash -897930107, now seen corresponding path program 1 times [2018-06-24 20:26:57,507 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:26:57,507 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:26:57,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:57,508 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:26:57,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:26:57,553 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:26:58,035 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:26:58,035 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:26:58,035 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-24 20:26:58,036 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:26:58,036 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:26:58,036 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:26:58,036 INFO ]: Start difference. First operand 387 states and 767 transitions. Second operand 6 states. [2018-06-24 20:27:05,547 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:27:05,547 INFO ]: Finished difference Result 1310 states and 4847 transitions. [2018-06-24 20:27:05,547 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-24 20:27:05,547 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-24 20:27:05,547 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:27:05,793 INFO ]: With dead ends: 1310 [2018-06-24 20:27:05,793 INFO ]: Without dead ends: 1310 [2018-06-24 20:27:05,793 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-24 20:27:05,794 INFO ]: Start minimizeSevpa. Operand 1310 states. [2018-06-24 20:27:06,262 INFO ]: Finished minimizeSevpa. Reduced states from 1310 to 832. [2018-06-24 20:27:06,262 INFO ]: Start removeUnreachable. Operand 832 states. [2018-06-24 20:27:06,313 INFO ]: Finished removeUnreachable. Reduced from 832 states to 832 states and 2118 transitions. [2018-06-24 20:27:06,313 INFO ]: Start accepts. Automaton has 832 states and 2118 transitions. Word has length 10 [2018-06-24 20:27:06,313 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:27:06,313 INFO ]: Abstraction has 832 states and 2118 transitions. [2018-06-24 20:27:06,313 INFO ]: Interpolant automaton has 6 states. [2018-06-24 20:27:06,313 INFO ]: Start isEmpty. Operand 832 states and 2118 transitions. [2018-06-24 20:27:06,347 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-24 20:27:06,347 INFO ]: Found error trace [2018-06-24 20:27:06,347 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:27:06,347 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:27:06,348 INFO ]: Analyzing trace with hash 722032516, now seen corresponding path program 1 times [2018-06-24 20:27:06,348 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:27:06,348 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:27:06,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:27:06,348 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:27:06,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:27:06,383 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:27:06,777 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:27:06,777 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:27:06,778 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-24 20:27:06,778 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:27:06,778 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:27:06,778 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:27:06,778 INFO ]: Start difference. First operand 832 states and 2118 transitions. Second operand 6 states. [2018-06-24 20:27:10,112 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:27:10,112 INFO ]: Finished difference Result 2456 states and 9968 transitions. [2018-06-24 20:27:10,115 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 20:27:10,115 INFO ]: Start accepts. Automaton has 6 states. Word has length 10 [2018-06-24 20:27:10,115 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:27:10,523 INFO ]: With dead ends: 2456 [2018-06-24 20:27:10,523 INFO ]: Without dead ends: 2261 [2018-06-24 20:27:10,523 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-24 20:27:10,524 INFO ]: Start minimizeSevpa. Operand 2261 states. [2018-06-24 20:27:11,381 INFO ]: Finished minimizeSevpa. Reduced states from 2261 to 1425. [2018-06-24 20:27:11,381 INFO ]: Start removeUnreachable. Operand 1425 states. [2018-06-24 20:27:11,488 INFO ]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 3962 transitions. [2018-06-24 20:27:11,489 INFO ]: Start accepts. Automaton has 1425 states and 3962 transitions. Word has length 10 [2018-06-24 20:27:11,489 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:27:11,489 INFO ]: Abstraction has 1425 states and 3962 transitions. [2018-06-24 20:27:11,489 INFO ]: Interpolant automaton has 6 states. [2018-06-24 20:27:11,489 INFO ]: Start isEmpty. Operand 1425 states and 3962 transitions. [2018-06-24 20:27:11,545 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 20:27:11,545 INFO ]: Found error trace [2018-06-24 20:27:11,545 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:27:11,546 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:27:11,546 INFO ]: Analyzing trace with hash -2072397485, now seen corresponding path program 1 times [2018-06-24 20:27:11,546 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:27:11,547 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:27:11,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:27:11,547 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:27:11,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:27:11,587 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:27:12,191 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:27:12,191 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:27:12,191 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:27:12,203 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:27:12,273 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:27:12,283 INFO ]: Computing forward predicates... [2018-06-24 20:27:12,838 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:27:12,862 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:27:12,862 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-24 20:27:12,862 INFO ]: Interpolant automaton has 12 states [2018-06-24 20:27:12,862 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-24 20:27:12,862 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-24 20:27:12,863 INFO ]: Start difference. First operand 1425 states and 3962 transitions. Second operand 12 states. Received shutdown request... [2018-06-24 20:27:50,063 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-06-24 20:27:50,064 WARN ]: Verification canceled [2018-06-24 20:27:50,066 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:27:50,067 WARN ]: Timeout [2018-06-24 20:27:50,067 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:27:50 BasicIcfg [2018-06-24 20:27:50,067 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:27:50,068 INFO ]: Toolchain (without parser) took 59619.97 ms. Allocated memory was 306.2 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 248.6 MB in the beginning and 865.2 MB in the end (delta: -616.6 MB). Peak memory consumption was 685.8 MB. Max. memory is 3.6 GB. [2018-06-24 20:27:50,069 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:27:50,070 INFO ]: ChcToBoogie took 111.21 ms. Allocated memory is still 306.2 MB. Free memory was 248.6 MB in the beginning and 244.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:27:50,070 INFO ]: Boogie Preprocessor took 89.41 ms. Allocated memory is still 306.2 MB. Free memory was 244.6 MB in the beginning and 242.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:27:50,071 INFO ]: RCFGBuilder took 1476.64 ms. Allocated memory was 306.2 MB in the beginning and 323.5 MB in the end (delta: 17.3 MB). Free memory was 242.6 MB in the beginning and 284.7 MB in the end (delta: -42.1 MB). Peak memory consumption was 63.8 MB. Max. memory is 3.6 GB. [2018-06-24 20:27:50,072 INFO ]: BlockEncodingV2 took 602.39 ms. Allocated memory is still 323.5 MB. Free memory was 284.7 MB in the beginning and 257.8 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 3.6 GB. [2018-06-24 20:27:50,078 INFO ]: TraceAbstraction took 57326.40 ms. Allocated memory was 323.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 257.8 MB in the beginning and 865.2 MB in the end (delta: -607.4 MB). Peak memory consumption was 677.6 MB. Max. memory is 3.6 GB. [2018-06-24 20:27:50,081 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 145 locations, 279 edges - StatisticsResult: Encoded RCFG 133 locations, 262 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 111.21 ms. Allocated memory is still 306.2 MB. Free memory was 248.6 MB in the beginning and 244.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 89.41 ms. Allocated memory is still 306.2 MB. Free memory was 244.6 MB in the beginning and 242.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1476.64 ms. Allocated memory was 306.2 MB in the beginning and 323.5 MB in the end (delta: 17.3 MB). Free memory was 242.6 MB in the beginning and 284.7 MB in the end (delta: -42.1 MB). Peak memory consumption was 63.8 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 602.39 ms. Allocated memory is still 323.5 MB. Free memory was 284.7 MB in the beginning and 257.8 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57326.40 ms. Allocated memory was 323.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 257.8 MB in the beginning and 865.2 MB in the end (delta: -607.4 MB). Peak memory consumption was 677.6 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 (1425states) and interpolant automaton (currently 34 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (6816 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 133 locations, 1 error locations. TIMEOUT Result, 57.2s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 52.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7588 SDtfs, 823 SDslu, 31466 SDs, 0 SdLazy, 35361 SolverSat, 8452 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1425occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 1314 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1190 SizeOfPredicates, 7 NumberOfNonLiveVariables, 436 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 8/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham.27.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-27-50-098.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham.27.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-27-50-098.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham.27.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-27-50-098.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/graham.27.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-27-50-098.csv Completed graceful shutdown