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_Goto.epf -i /storage/chc-comp/llreve-bench/smt2/loop__loop2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 02:12:24,076 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 02:12:24,077 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 02:12:24,090 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 02:12:24,090 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 02:12:24,091 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 02:12:24,092 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 02:12:24,094 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 02:12:24,096 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 02:12:24,096 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 02:12:24,097 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 02:12:24,097 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 02:12:24,098 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 02:12:24,099 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 02:12:24,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 02:12:24,102 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 02:12:24,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 02:12:24,107 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 02:12:24,108 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 02:12:24,109 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 02:12:24,110 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 02:12:24,113 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 02:12:24,113 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 02:12:24,113 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 02:12:24,114 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 02:12:24,115 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 02:12:24,115 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 02:12:24,116 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 02:12:24,117 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 02:12:24,117 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 02:12:24,118 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 02:12:24,119 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 02:12:24,119 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 02:12:24,120 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 02:12:24,120 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 02:12:24,121 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 02:12:24,134 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 02:12:24,134 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 02:12:24,134 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 02:12:24,134 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 02:12:24,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 02:12:24,135 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 02:12:24,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 02:12:24,136 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 02:12:24,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 02:12:24,136 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 02:12:24,136 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 02:12:24,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 02:12:24,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 02:12:24,137 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 02:12:24,137 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 02:12:24,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 02:12:24,137 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 02:12:24,139 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 02:12:24,139 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 02:12:24,179 INFO ]: Repository-Root is: /tmp [2018-06-22 02:12:24,192 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 02:12:24,195 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 02:12:24,202 INFO ]: Initializing SmtParser... [2018-06-22 02:12:24,203 INFO ]: SmtParser initialized [2018-06-22 02:12:24,203 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__loop2.smt2 [2018-06-22 02:12:24,205 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 02:12:24,313 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__loop2.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@532e5b40 [2018-06-22 02:12:24,505 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__loop2.smt2 [2018-06-22 02:12:24,509 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 02:12:24,523 INFO ]: Walking toolchain with 4 elements. [2018-06-22 02:12:24,524 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 02:12:24,524 INFO ]: Initializing ChcToBoogie... [2018-06-22 02:12:24,524 INFO ]: ChcToBoogie initialized [2018-06-22 02:12:24,534 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:12:24" (1/1) ... [2018-06-22 02:12:24,598 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24 Unit [2018-06-22 02:12:24,599 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 02:12:24,599 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 02:12:24,599 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 02:12:24,599 INFO ]: Boogie Preprocessor initialized [2018-06-22 02:12:24,623 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24" (1/1) ... [2018-06-22 02:12:24,623 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24" (1/1) ... [2018-06-22 02:12:24,628 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24" (1/1) ... [2018-06-22 02:12:24,628 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24" (1/1) ... [2018-06-22 02:12:24,632 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24" (1/1) ... [2018-06-22 02:12:24,633 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24" (1/1) ... [2018-06-22 02:12:24,634 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24" (1/1) ... [2018-06-22 02:12:24,636 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 02:12:24,637 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 02:12:24,637 INFO ]: Initializing RCFGBuilder... [2018-06-22 02:12:24,637 INFO ]: RCFGBuilder initialized [2018-06-22 02:12:24,638 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 02:12:24,655 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 02:12:24,655 INFO ]: Found specification of procedure gotoProc [2018-06-22 02:12:24,655 INFO ]: Found implementation of procedure gotoProc [2018-06-22 02:12:24,655 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 02:12:24,656 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 02:12:24,656 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 02:12:24,948 INFO ]: Using library mode [2018-06-22 02:12:24,948 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:12:24 BoogieIcfgContainer [2018-06-22 02:12:24,949 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 02:12:24,957 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 02:12:24,957 INFO ]: Initializing TraceAbstraction... [2018-06-22 02:12:24,960 INFO ]: TraceAbstraction initialized [2018-06-22 02:12:24,960 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:12:24" (1/3) ... [2018-06-22 02:12:24,961 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264303b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:12:24, skipping insertion in model container [2018-06-22 02:12:24,961 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:12:24" (2/3) ... [2018-06-22 02:12:24,961 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264303b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:12:24, skipping insertion in model container [2018-06-22 02:12:24,961 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:12:24" (3/3) ... [2018-06-22 02:12:24,967 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 02:12:24,981 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 02:12:25,000 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 02:12:25,055 INFO ]: Using default assertion order modulation [2018-06-22 02:12:25,055 INFO ]: Interprodecural is true [2018-06-22 02:12:25,055 INFO ]: Hoare is false [2018-06-22 02:12:25,055 INFO ]: Compute interpolants for FPandBP [2018-06-22 02:12:25,055 INFO ]: Backedges is TWOTRACK [2018-06-22 02:12:25,055 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 02:12:25,055 INFO ]: Difference is false [2018-06-22 02:12:25,055 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 02:12:25,055 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 02:12:25,070 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 02:12:25,082 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 02:12:25,082 INFO ]: Found error trace [2018-06-22 02:12:25,083 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:25,083 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:25,088 INFO ]: Analyzing trace with hash -204604396, now seen corresponding path program 1 times [2018-06-22 02:12:25,089 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:25,090 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:25,125 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,125 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:25,125 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,175 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:25,233 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:25,235 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:12:25,235 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 02:12:25,236 INFO ]: Interpolant automaton has 3 states [2018-06-22 02:12:25,249 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 02:12:25,249 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:25,253 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 02:12:25,367 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:25,367 INFO ]: Finished difference Result 9 states and 13 transitions. [2018-06-22 02:12:25,370 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 02:12:25,371 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 02:12:25,371 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:25,382 INFO ]: With dead ends: 9 [2018-06-22 02:12:25,389 INFO ]: Without dead ends: 9 [2018-06-22 02:12:25,392 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 [2018-06-22 02:12:25,417 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 02:12:25,446 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 02:12:25,447 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 02:12:25,449 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-22 02:12:25,450 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 7 [2018-06-22 02:12:25,451 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:25,451 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-22 02:12:25,451 INFO ]: Interpolant automaton has 3 states. [2018-06-22 02:12:25,451 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-22 02:12:25,451 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 02:12:25,451 INFO ]: Found error trace [2018-06-22 02:12:25,451 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:25,451 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:25,452 INFO ]: Analyzing trace with hash -2053345520, now seen corresponding path program 1 times [2018-06-22 02:12:25,452 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:25,452 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:25,453 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,454 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:25,454 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,479 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:25,541 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:25,541 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:12:25,541 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 02:12:25,542 INFO ]: Interpolant automaton has 3 states [2018-06-22 02:12:25,542 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 02:12:25,542 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:25,542 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 3 states. [2018-06-22 02:12:25,630 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:25,630 INFO ]: Finished difference Result 10 states and 16 transitions. [2018-06-22 02:12:25,630 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 02:12:25,630 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 02:12:25,631 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:25,631 INFO ]: With dead ends: 10 [2018-06-22 02:12:25,631 INFO ]: Without dead ends: 10 [2018-06-22 02:12:25,632 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:25,632 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 02:12:25,633 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 02:12:25,633 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 02:12:25,633 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-22 02:12:25,633 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 8 [2018-06-22 02:12:25,633 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:25,633 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-22 02:12:25,633 INFO ]: Interpolant automaton has 3 states. [2018-06-22 02:12:25,633 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-22 02:12:25,633 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 02:12:25,633 INFO ]: Found error trace [2018-06-22 02:12:25,633 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:25,634 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:25,634 INFO ]: Analyzing trace with hash -2049651436, now seen corresponding path program 1 times [2018-06-22 02:12:25,634 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:25,634 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:25,634 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,634 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:25,634 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,645 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:25,680 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 02:12:25,680 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:12:25,680 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 02:12:25,680 INFO ]: Interpolant automaton has 3 states [2018-06-22 02:12:25,680 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 02:12:25,680 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:25,680 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2018-06-22 02:12:25,780 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:25,780 INFO ]: Finished difference Result 12 states and 22 transitions. [2018-06-22 02:12:25,780 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 02:12:25,780 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 02:12:25,780 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:25,781 INFO ]: With dead ends: 12 [2018-06-22 02:12:25,781 INFO ]: Without dead ends: 12 [2018-06-22 02:12:25,781 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 [2018-06-22 02:12:25,781 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 02:12:25,783 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-22 02:12:25,783 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 02:12:25,783 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-22 02:12:25,783 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 8 [2018-06-22 02:12:25,783 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:25,783 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-22 02:12:25,783 INFO ]: Interpolant automaton has 3 states. [2018-06-22 02:12:25,783 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-22 02:12:25,784 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 02:12:25,784 INFO ]: Found error trace [2018-06-22 02:12:25,784 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:25,784 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:25,784 INFO ]: Analyzing trace with hash 761527696, now seen corresponding path program 1 times [2018-06-22 02:12:25,784 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:25,784 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:25,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,785 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:25,785 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,812 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:25,875 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 02:12:25,875 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:12:25,875 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 02:12:25,875 INFO ]: Interpolant automaton has 3 states [2018-06-22 02:12:25,875 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 02:12:25,875 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:25,876 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2018-06-22 02:12:25,919 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:25,919 INFO ]: Finished difference Result 12 states and 20 transitions. [2018-06-22 02:12:25,921 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 02:12:25,921 INFO ]: Start accepts. Automaton has 3 states. Word has length 9 [2018-06-22 02:12:25,921 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:25,921 INFO ]: With dead ends: 12 [2018-06-22 02:12:25,921 INFO ]: Without dead ends: 10 [2018-06-22 02:12:25,922 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:25,922 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 02:12:25,923 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 02:12:25,923 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 02:12:25,923 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-06-22 02:12:25,923 INFO ]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 9 [2018-06-22 02:12:25,924 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:25,924 INFO ]: Abstraction has 10 states and 13 transitions. [2018-06-22 02:12:25,924 INFO ]: Interpolant automaton has 3 states. [2018-06-22 02:12:25,924 INFO ]: Start isEmpty. Operand 10 states and 13 transitions. [2018-06-22 02:12:25,924 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 02:12:25,924 INFO ]: Found error trace [2018-06-22 02:12:25,924 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 02:12:25,924 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 02:12:25,924 INFO ]: Analyzing trace with hash 876044300, now seen corresponding path program 1 times [2018-06-22 02:12:25,924 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 02:12:25,924 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 02:12:25,925 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,925 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 02:12:25,925 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 02:12:25,943 INFO ]: Conjunction of SSA is unsat [2018-06-22 02:12:25,974 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 02:12:25,975 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 02:12:25,975 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 02:12:25,975 INFO ]: Interpolant automaton has 3 states [2018-06-22 02:12:25,975 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 02:12:25,975 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:25,975 INFO ]: Start difference. First operand 10 states and 13 transitions. Second operand 3 states. [2018-06-22 02:12:25,982 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 02:12:25,982 INFO ]: Finished difference Result 6 states and 9 transitions. [2018-06-22 02:12:25,983 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 02:12:25,983 INFO ]: Start accepts. Automaton has 3 states. Word has length 9 [2018-06-22 02:12:25,983 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 02:12:25,983 INFO ]: With dead ends: 6 [2018-06-22 02:12:25,983 INFO ]: Without dead ends: 0 [2018-06-22 02:12:25,983 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 02:12:25,983 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 02:12:25,983 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 02:12:25,983 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 02:12:25,984 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 02:12:25,984 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-22 02:12:25,984 INFO ]: Finished accepts. word is rejected. [2018-06-22 02:12:25,984 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 02:12:25,984 INFO ]: Interpolant automaton has 3 states. [2018-06-22 02:12:25,984 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 02:12:25,984 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 02:12:25,989 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:12:25 BoogieIcfgContainer [2018-06-22 02:12:25,989 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 02:12:25,990 INFO ]: Toolchain (without parser) took 1480.29 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 220.5 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 3.6 GB. [2018-06-22 02:12:25,992 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 02:12:25,992 INFO ]: ChcToBoogie took 75.09 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:12:25,993 INFO ]: Boogie Preprocessor took 37.20 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 260.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:12:25,993 INFO ]: RCFGBuilder took 311.39 ms. Allocated memory is still 307.2 MB. Free memory was 260.6 MB in the beginning and 252.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 02:12:25,994 INFO ]: TraceAbstraction took 1032.64 ms. Allocated memory is still 307.2 MB. Free memory was 252.6 MB in the beginning and 220.5 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. [2018-06-22 02:12:25,997 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 75.09 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.20 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 260.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 311.39 ms. Allocated memory is still 307.2 MB. Free memory was 260.6 MB in the beginning and 252.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1032.64 ms. Allocated memory is still 307.2 MB. Free memory was 252.6 MB in the beginning and 220.5 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 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, 10 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 22 SDs, 0 SdLazy, 34 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 8/8 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/loop__loop2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_02-12-26-009.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__loop2.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_02-12-26-009.csv Received shutdown request...