java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:23:48,048 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:23:48,050 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:23:48,066 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:23:48,067 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:23:48,068 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:23:48,069 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:23:48,073 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:23:48,075 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:23:48,076 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:23:48,077 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:23:48,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:23:48,078 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:23:48,080 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:23:48,082 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:23:48,083 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:23:48,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:23:48,098 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:23:48,100 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:23:48,104 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:23:48,105 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:23:48,107 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:23:48,107 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:23:48,108 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:23:48,108 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:23:48,109 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:23:48,112 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:23:48,113 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:23:48,114 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:23:48,114 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:23:48,115 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:23:48,115 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:23:48,116 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:23:48,123 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:23:48,124 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:23:48,124 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:23:48,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:23:48,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:23:48,143 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:23:48,143 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:23:48,144 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:23:48,145 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:23:48,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:23:48,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:23:48,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:23:48,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:23:48,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:23:48,146 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:23:48,146 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:23:48,146 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:23:48,146 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:23:48,146 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:23:48,147 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:23:48,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:23:48,147 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:23:48,149 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:23:48,149 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:23:48,198 INFO ]: Repository-Root is: /tmp [2018-06-22 11:23:48,213 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:23:48,216 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:23:48,218 INFO ]: Initializing SmtParser... [2018-06-22 11:23:48,218 INFO ]: SmtParser initialized [2018-06-22 11:23:48,218 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 [2018-06-22 11:23:48,219 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 [2018-06-22 11:23:48,313 INFO ]: Executing SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@391fd138 [2018-06-22 11:23:48,449 INFO ]: Succesfully executed SMT file /storage/chc-comp/hcai-bench/arrays_orig/array_fill1_abstracted.smt2 [2018-06-22 11:23:48,454 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:23:48,460 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:23:48,460 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:23:48,460 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:23:48,461 INFO ]: ChcToBoogie initialized [2018-06-22 11:23:48,464 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:23:48" (1/1) ... [2018-06-22 11:23:48,502 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48 Unit [2018-06-22 11:23:48,502 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:23:48,502 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:23:48,503 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:23:48,503 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:23:48,522 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48" (1/1) ... [2018-06-22 11:23:48,522 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48" (1/1) ... [2018-06-22 11:23:48,527 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48" (1/1) ... [2018-06-22 11:23:48,527 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48" (1/1) ... [2018-06-22 11:23:48,529 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48" (1/1) ... [2018-06-22 11:23:48,530 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48" (1/1) ... [2018-06-22 11:23:48,531 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48" (1/1) ... [2018-06-22 11:23:48,532 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:23:48,533 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:23:48,533 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:23:48,533 INFO ]: RCFGBuilder initialized [2018-06-22 11:23:48,534 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48" (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) [2018-06-22 11:23:48,545 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:23:48,546 INFO ]: Found specification of procedure False [2018-06-22 11:23:48,546 INFO ]: Found implementation of procedure False [2018-06-22 11:23:48,546 INFO ]: Specification and implementation of procedure end given in one single declaration [2018-06-22 11:23:48,546 INFO ]: Found specification of procedure end [2018-06-22 11:23:48,546 INFO ]: Found implementation of procedure end [2018-06-22 11:23:48,546 INFO ]: Specification and implementation of procedure loop given in one single declaration [2018-06-22 11:23:48,546 INFO ]: Found specification of procedure loop [2018-06-22 11:23:48,546 INFO ]: Found implementation of procedure loop [2018-06-22 11:23:48,546 INFO ]: Specification and implementation of procedure incr given in one single declaration [2018-06-22 11:23:48,546 INFO ]: Found specification of procedure incr [2018-06-22 11:23:48,546 INFO ]: Found implementation of procedure incr [2018-06-22 11:23:48,546 INFO ]: Specification and implementation of procedure write given in one single declaration [2018-06-22 11:23:48,546 INFO ]: Found specification of procedure write [2018-06-22 11:23:48,546 INFO ]: Found implementation of procedure write [2018-06-22 11:23:48,546 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:23:48,546 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:23:48,546 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 [2018-06-22 11:23:48,787 INFO ]: Using library mode [2018-06-22 11:23:48,787 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:23:48 BoogieIcfgContainer [2018-06-22 11:23:48,787 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:23:48,788 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:23:48,788 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:23:48,791 INFO ]: TraceAbstraction initialized [2018-06-22 11:23:48,792 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:23:48" (1/3) ... [2018-06-22 11:23:48,793 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6a630a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:23:48, skipping insertion in model container [2018-06-22 11:23:48,793 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:23:48" (2/3) ... [2018-06-22 11:23:48,793 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6a630a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:23:48, skipping insertion in model container [2018-06-22 11:23:48,793 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:23:48" (3/3) ... [2018-06-22 11:23:48,795 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:23:48,804 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:23:48,814 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:23:48,862 INFO ]: Using default assertion order modulation [2018-06-22 11:23:48,863 INFO ]: Interprodecural is true [2018-06-22 11:23:48,863 INFO ]: Hoare is false [2018-06-22 11:23:48,863 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:23:48,863 INFO ]: Backedges is TWOTRACK [2018-06-22 11:23:48,863 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:23:48,864 INFO ]: Difference is false [2018-06-22 11:23:48,864 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:23:48,864 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:23:48,882 INFO ]: Start isEmpty. Operand 26 states. [2018-06-22 11:23:48,902 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:23:48,902 INFO ]: Found error trace [2018-06-22 11:23:48,903 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:48,903 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:48,910 INFO ]: Analyzing trace with hash 1569130458, now seen corresponding path program 1 times [2018-06-22 11:23:48,912 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:48,913 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:48,949 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:48,949 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:48,949 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:48,979 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:49,081 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:23:49,083 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:23:49,084 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 11:23:49,085 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:23:49,095 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:23:49,095 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:23:49,097 INFO ]: Start difference. First operand 26 states. Second operand 6 states. [2018-06-22 11:23:49,242 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:49,242 INFO ]: Finished difference Result 28 states and 31 transitions. [2018-06-22 11:23:49,243 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:23:49,244 INFO ]: Start accepts. Automaton has 6 states. Word has length 13 [2018-06-22 11:23:49,244 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:49,253 INFO ]: With dead ends: 28 [2018-06-22 11:23:49,253 INFO ]: Without dead ends: 26 [2018-06-22 11:23:49,255 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:23:49,273 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 11:23:49,293 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-06-22 11:23:49,295 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 11:23:49,296 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-06-22 11:23:49,297 INFO ]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2018-06-22 11:23:49,297 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:49,297 INFO ]: Abstraction has 26 states and 29 transitions. [2018-06-22 11:23:49,297 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:23:49,297 INFO ]: Start isEmpty. Operand 26 states and 29 transitions. [2018-06-22 11:23:49,298 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:23:49,298 INFO ]: Found error trace [2018-06-22 11:23:49,298 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:49,299 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:49,299 INFO ]: Analyzing trace with hash -444420030, now seen corresponding path program 1 times [2018-06-22 11:23:49,299 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:49,299 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:49,300 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:49,300 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:49,300 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:49,313 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:49,524 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:23:49,524 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:23:49,524 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 11:23:49,526 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:23:49,526 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:23:49,526 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:23:49,527 INFO ]: Start difference. First operand 26 states and 29 transitions. Second operand 6 states. [2018-06-22 11:23:49,625 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:49,625 INFO ]: Finished difference Result 32 states and 35 transitions. [2018-06-22 11:23:49,626 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:23:49,626 INFO ]: Start accepts. Automaton has 6 states. Word has length 25 [2018-06-22 11:23:49,626 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:49,627 INFO ]: With dead ends: 32 [2018-06-22 11:23:49,627 INFO ]: Without dead ends: 30 [2018-06-22 11:23:49,628 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:23:49,628 INFO ]: Start minimizeSevpa. Operand 30 states. [2018-06-22 11:23:49,634 INFO ]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-06-22 11:23:49,634 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 11:23:49,634 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-06-22 11:23:49,634 INFO ]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 25 [2018-06-22 11:23:49,635 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:49,635 INFO ]: Abstraction has 28 states and 31 transitions. [2018-06-22 11:23:49,635 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:23:49,635 INFO ]: Start isEmpty. Operand 28 states and 31 transitions. [2018-06-22 11:23:49,636 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:23:49,636 INFO ]: Found error trace [2018-06-22 11:23:49,636 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:49,636 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:49,636 INFO ]: Analyzing trace with hash -1122044705, now seen corresponding path program 1 times [2018-06-22 11:23:49,636 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:49,636 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:49,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:49,637 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:49,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:49,669 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:50,238 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:23:50,238 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:23:50,238 INFO ]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-06-22 11:23:50,239 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:23:50,239 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:23:50,239 INFO ]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:23:50,239 INFO ]: Start difference. First operand 28 states and 31 transitions. Second operand 10 states. [2018-06-22 11:23:50,364 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:50,364 INFO ]: Finished difference Result 38 states and 42 transitions. [2018-06-22 11:23:50,365 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:23:50,365 INFO ]: Start accepts. Automaton has 10 states. Word has length 25 [2018-06-22 11:23:50,365 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:50,366 INFO ]: With dead ends: 38 [2018-06-22 11:23:50,366 INFO ]: Without dead ends: 36 [2018-06-22 11:23:50,367 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:23:50,367 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 11:23:50,372 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-06-22 11:23:50,372 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-22 11:23:50,373 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-06-22 11:23:50,373 INFO ]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2018-06-22 11:23:50,373 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:50,373 INFO ]: Abstraction has 34 states and 38 transitions. [2018-06-22 11:23:50,373 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:23:50,373 INFO ]: Start isEmpty. Operand 34 states and 38 transitions. [2018-06-22 11:23:50,374 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:23:50,375 INFO ]: Found error trace [2018-06-22 11:23:50,375 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:23:50,375 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:23:50,375 INFO ]: Analyzing trace with hash 758126791, now seen corresponding path program 1 times [2018-06-22 11:23:50,375 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:23:50,375 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:23:50,376 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:50,376 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:23:50,376 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:23:50,391 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:23:50,873 INFO ]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:23:50,874 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:23:50,874 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 11:23:50,874 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:23:50,874 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:23:50,874 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:23:50,874 INFO ]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2018-06-22 11:23:50,950 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:23:50,950 INFO ]: Finished difference Result 30 states and 34 transitions. [2018-06-22 11:23:50,951 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:23:50,951 INFO ]: Start accepts. Automaton has 7 states. Word has length 37 [2018-06-22 11:23:50,951 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:23:50,951 INFO ]: With dead ends: 30 [2018-06-22 11:23:50,951 INFO ]: Without dead ends: 0 [2018-06-22 11:23:50,952 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:23:50,952 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:23:50,952 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:23:50,952 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:23:50,952 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:23:50,952 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-06-22 11:23:50,952 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:23:50,952 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:23:50,952 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:23:50,952 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:23:50,952 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:23:50,957 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:23:50 BoogieIcfgContainer [2018-06-22 11:23:50,957 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:23:50,957 INFO ]: Toolchain (without parser) took 2503.34 ms. Allocated memory was 305.7 MB in the beginning and 325.1 MB in the end (delta: 19.4 MB). Free memory was 262.0 MB in the beginning and 276.5 MB in the end (delta: -14.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:23:50,959 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 305.7 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:23:50,960 INFO ]: ChcToBoogie took 41.75 ms. Allocated memory is still 305.7 MB. Free memory was 262.0 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:23:50,960 INFO ]: Boogie Preprocessor took 29.73 ms. Allocated memory is still 305.7 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:23:50,961 INFO ]: RCFGBuilder took 254.54 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 250.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:23:50,961 INFO ]: TraceAbstraction took 2168.35 ms. Allocated memory was 305.7 MB in the beginning and 325.1 MB in the end (delta: 19.4 MB). Free memory was 250.1 MB in the beginning and 276.5 MB in the end (delta: -26.4 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:23:50,965 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 305.7 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 41.75 ms. Allocated memory is still 305.7 MB. Free memory was 262.0 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 29.73 ms. Allocated memory is still 305.7 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 254.54 ms. Allocated memory is still 305.7 MB. Free memory was 258.1 MB in the beginning and 250.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2168.35 ms. Allocated memory was 305.7 MB in the beginning and 325.1 MB in the end (delta: 19.4 MB). Free memory was 250.1 MB in the beginning and 276.5 MB in the end (delta: -26.4 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 6 procedures, 26 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 10 SDslu, 445 SDs, 0 SdLazy, 142 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=3, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 7764 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 23/23 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/array_fill1_abstracted.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-23-50-976.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_fill1_abstracted.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-23-50-976.csv Received shutdown request...