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/09.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:40:42,692 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:40:42,695 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:40:42,708 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:40:42,708 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:40:42,709 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:40:42,710 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:40:42,718 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:40:42,720 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:40:42,723 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:40:42,724 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:40:42,724 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:40:42,725 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:40:42,728 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:40:42,729 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:40:42,730 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:40:42,732 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:40:42,734 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:40:42,736 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:40:42,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:40:42,739 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:40:42,740 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:40:42,742 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:40:42,743 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:40:42,743 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:40:42,744 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:40:42,745 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:40:42,746 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:40:42,746 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:40:42,753 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:40:42,754 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:40:42,754 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:40:42,755 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:40:42,755 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:40:42,756 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:40:42,756 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:40:42,757 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:40:42,775 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:40:42,775 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:40:42,775 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:40:42,775 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:40:42,777 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:40:42,777 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:40:42,777 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:40:42,777 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:40:42,777 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:40:42,778 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:40:42,778 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:40:42,778 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:40:42,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:40:42,778 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:40:42,779 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:40:42,779 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:40:42,779 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:40:42,779 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:40:42,779 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:40:42,780 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:40:42,780 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:40:42,781 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:40:42,782 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:40:42,834 INFO ]: Repository-Root is: /tmp [2018-06-26 17:40:42,850 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:40:42,857 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:40:42,858 INFO ]: Initializing SmtParser... [2018-06-26 17:40:42,858 INFO ]: SmtParser initialized [2018-06-26 17:40:42,859 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/09.c.smt2 [2018-06-26 17:40:42,860 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 [2018-06-26 17:40:42,945 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/09.c.smt2 unknown [2018-06-26 17:40:43,778 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/09.c.smt2 [2018-06-26 17:40:43,782 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:40:43,796 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:40:43,796 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:40:43,796 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:40:43,797 INFO ]: ChcToBoogie initialized [2018-06-26 17:40:43,800 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:40:43" (1/1) ... [2018-06-26 17:40:43,897 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43 Unit [2018-06-26 17:40:43,897 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:40:43,897 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:40:43,897 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:40:43,897 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:40:43,920 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43" (1/1) ... [2018-06-26 17:40:43,921 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43" (1/1) ... [2018-06-26 17:40:43,951 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43" (1/1) ... [2018-06-26 17:40:43,952 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43" (1/1) ... [2018-06-26 17:40:43,962 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43" (1/1) ... [2018-06-26 17:40:43,965 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43" (1/1) ... [2018-06-26 17:40:43,973 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43" (1/1) ... [2018-06-26 17:40:43,983 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:40:43,984 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:40:43,984 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:40:43,984 INFO ]: RCFGBuilder initialized [2018-06-26 17:40:43,985 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:40:44,010 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:40:44,010 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:40:44,010 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:40:44,010 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:40:44,010 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:40:44,010 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 17:40:45,248 INFO ]: Using library mode [2018-06-26 17:40:45,249 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:40:45 BoogieIcfgContainer [2018-06-26 17:40:45,249 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:40:45,249 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:40:45,249 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:40:45,250 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:40:45,252 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:40:45" (1/1) ... [2018-06-26 17:40:45,280 INFO ]: Initial Icfg 61 locations, 68 edges [2018-06-26 17:40:45,282 INFO ]: Using Remove infeasible edges [2018-06-26 17:40:45,283 INFO ]: Using Maximize final states [2018-06-26 17:40:45,283 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:40:45,283 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:40:45,285 INFO ]: Using Remove sink states [2018-06-26 17:40:45,286 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:40:45,286 INFO ]: Using Use SBE [2018-06-26 17:40:45,309 INFO ]: SBE split 0 edges [2018-06-26 17:40:45,321 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:40:45,323 INFO ]: 0 new accepting states [2018-06-26 17:40:47,390 INFO ]: Removed 140 edges and 50 locations by large block encoding [2018-06-26 17:40:47,392 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:40:47,394 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:40:47,394 INFO ]: 0 new accepting states [2018-06-26 17:40:47,394 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:40:47,394 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:40:47,394 INFO ]: Encoded RCFG 9 locations, 17 edges [2018-06-26 17:40:47,395 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:40:47 BasicIcfg [2018-06-26 17:40:47,395 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:40:47,396 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:40:47,396 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:40:47,400 INFO ]: TraceAbstraction initialized [2018-06-26 17:40:47,400 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:40:43" (1/4) ... [2018-06-26 17:40:47,401 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf8aad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:40:47, skipping insertion in model container [2018-06-26 17:40:47,401 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:40:43" (2/4) ... [2018-06-26 17:40:47,401 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf8aad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:40:47, skipping insertion in model container [2018-06-26 17:40:47,401 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:40:45" (3/4) ... [2018-06-26 17:40:47,401 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf8aad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:40:47, skipping insertion in model container [2018-06-26 17:40:47,401 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:40:47" (4/4) ... [2018-06-26 17:40:47,404 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:40:47,413 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:40:47,422 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:40:47,468 INFO ]: Using default assertion order modulation [2018-06-26 17:40:47,468 INFO ]: Interprodecural is true [2018-06-26 17:40:47,468 INFO ]: Hoare is false [2018-06-26 17:40:47,468 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:40:47,469 INFO ]: Backedges is TWOTRACK [2018-06-26 17:40:47,469 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:40:47,469 INFO ]: Difference is false [2018-06-26 17:40:47,469 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:40:47,469 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:40:47,481 INFO ]: Start isEmpty. Operand 9 states. [2018-06-26 17:40:47,493 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:40:47,493 INFO ]: Found error trace [2018-06-26 17:40:47,494 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:40:47,494 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:40:47,499 INFO ]: Analyzing trace with hash -983972956, now seen corresponding path program 1 times [2018-06-26 17:40:47,501 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:40:47,502 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:40:47,551 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:47,551 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:47,551 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:47,689 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:47,996 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:47,998 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:40:47,999 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-26 17:40:48,000 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:40:48,012 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:40:48,012 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:40:48,014 INFO ]: Start difference. First operand 9 states. Second operand 5 states. [2018-06-26 17:40:48,405 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:40:48,406 INFO ]: Finished difference Result 15 states and 34 transitions. [2018-06-26 17:40:48,406 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:40:48,407 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-26 17:40:48,407 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:40:48,416 INFO ]: With dead ends: 15 [2018-06-26 17:40:48,416 INFO ]: Without dead ends: 14 [2018-06-26 17:40:48,418 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:40:48,431 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-26 17:40:48,461 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 11. [2018-06-26 17:40:48,464 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-26 17:40:48,464 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 22 transitions. [2018-06-26 17:40:48,466 INFO ]: Start accepts. Automaton has 11 states and 22 transitions. Word has length 7 [2018-06-26 17:40:48,467 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:40:48,467 INFO ]: Abstraction has 11 states and 22 transitions. [2018-06-26 17:40:48,467 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:40:48,467 INFO ]: Start isEmpty. Operand 11 states and 22 transitions. [2018-06-26 17:40:48,467 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 17:40:48,467 INFO ]: Found error trace [2018-06-26 17:40:48,467 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:40:48,467 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:40:48,467 INFO ]: Analyzing trace with hash -460853723, now seen corresponding path program 1 times [2018-06-26 17:40:48,468 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:40:48,468 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:40:48,468 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:48,468 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:48,469 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:48,545 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:48,671 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:48,671 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:40:48,672 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:40:48,673 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:40:48,674 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:40:48,674 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:40:48,674 INFO ]: Start difference. First operand 11 states and 22 transitions. Second operand 3 states. [2018-06-26 17:40:48,724 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:40:48,724 INFO ]: Finished difference Result 11 states and 18 transitions. [2018-06-26 17:40:48,725 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:40:48,725 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-26 17:40:48,725 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:40:48,726 INFO ]: With dead ends: 11 [2018-06-26 17:40:48,726 INFO ]: Without dead ends: 9 [2018-06-26 17:40:48,726 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 [2018-06-26 17:40:48,727 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 17:40:48,728 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-26 17:40:48,728 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:40:48,728 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2018-06-26 17:40:48,728 INFO ]: Start accepts. Automaton has 9 states and 14 transitions. Word has length 8 [2018-06-26 17:40:48,728 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:40:48,728 INFO ]: Abstraction has 9 states and 14 transitions. [2018-06-26 17:40:48,728 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:40:48,728 INFO ]: Start isEmpty. Operand 9 states and 14 transitions. [2018-06-26 17:40:48,728 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 17:40:48,728 INFO ]: Found error trace [2018-06-26 17:40:48,728 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:40:48,728 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:40:48,729 INFO ]: Analyzing trace with hash 1773017368, now seen corresponding path program 1 times [2018-06-26 17:40:48,729 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:40:48,729 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:40:48,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:48,729 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:40:48,729 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:40:48,773 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:40:48,920 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:40:48,920 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:40:48,920 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:40:48,920 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:40:48,920 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:40:48,920 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:40:48,920 INFO ]: Start difference. First operand 9 states and 14 transitions. Second operand 4 states. [2018-06-26 17:40:48,960 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:40:48,961 INFO ]: Finished difference Result 5 states and 7 transitions. [2018-06-26 17:40:48,961 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:40:48,961 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-26 17:40:48,961 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:40:48,961 INFO ]: With dead ends: 5 [2018-06-26 17:40:48,961 INFO ]: Without dead ends: 0 [2018-06-26 17:40:48,962 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:40:48,962 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 17:40:48,962 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 17:40:48,962 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 17:40:48,962 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 17:40:48,962 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-26 17:40:48,962 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:40:48,962 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 17:40:48,962 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:40:48,962 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 17:40:48,962 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 17:40:48,964 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:40:48,968 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:40:48 BasicIcfg [2018-06-26 17:40:48,968 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:40:48,968 INFO ]: Toolchain (without parser) took 5177.73 ms. Allocated memory was 303.0 MB in the beginning and 386.9 MB in the end (delta: 83.9 MB). Free memory was 213.1 MB in the beginning and 272.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:48,970 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 303.0 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:40:48,970 INFO ]: ChcToBoogie took 100.67 ms. Allocated memory is still 303.0 MB. Free memory was 212.1 MB in the beginning and 209.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:48,970 INFO ]: Boogie Preprocessor took 85.76 ms. Allocated memory is still 303.0 MB. Free memory was 209.1 MB in the beginning and 206.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:48,971 INFO ]: RCFGBuilder took 1264.45 ms. Allocated memory was 303.0 MB in the beginning and 324.0 MB in the end (delta: 21.0 MB). Free memory was 206.2 MB in the beginning and 233.6 MB in the end (delta: -27.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:48,971 INFO ]: BlockEncodingV2 took 2145.81 ms. Allocated memory was 324.0 MB in the beginning and 386.9 MB in the end (delta: 62.9 MB). Free memory was 233.6 MB in the beginning and 343.2 MB in the end (delta: -109.6 MB). Peak memory consumption was 105.5 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:48,971 INFO ]: TraceAbstraction took 1571.36 ms. Allocated memory is still 386.9 MB. Free memory was 343.2 MB in the beginning and 272.5 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 3.6 GB. [2018-06-26 17:40:48,980 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 61 locations, 68 edges - StatisticsResult: Encoded RCFG 9 locations, 17 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 303.0 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 100.67 ms. Allocated memory is still 303.0 MB. Free memory was 212.1 MB in the beginning and 209.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 85.76 ms. Allocated memory is still 303.0 MB. Free memory was 209.1 MB in the beginning and 206.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1264.45 ms. Allocated memory was 303.0 MB in the beginning and 324.0 MB in the end (delta: 21.0 MB). Free memory was 206.2 MB in the beginning and 233.6 MB in the end (delta: -27.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 2145.81 ms. Allocated memory was 324.0 MB in the beginning and 386.9 MB in the end (delta: 62.9 MB). Free memory was 233.6 MB in the beginning and 343.2 MB in the end (delta: -109.6 MB). Peak memory consumption was 105.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1571.36 ms. Allocated memory is still 386.9 MB. Free memory was 343.2 MB in the beginning and 272.5 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. 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, 9 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 18 SDslu, 45 SDs, 0 SdLazy, 37 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 244 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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/09.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-40-48-993.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/09.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-40-48-993.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/09.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-40-48-993.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/09.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-40-48-993.csv Received shutdown request...