java -Xss4m -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/eldarica-misc/LIA/Consistency/delauny-edge-flipping.8.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:20:30,038 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:20:30,040 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:20:30,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:20:30,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:20:30,052 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:20:30,053 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:20:30,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:20:30,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:20:30,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:20:30,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:20:30,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:20:30,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:20:30,062 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:20:30,063 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:20:30,064 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:20:30,066 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:20:30,068 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:20:30,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:20:30,071 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:20:30,072 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:20:30,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:20:30,075 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:20:30,075 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:20:30,076 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:20:30,077 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:20:30,078 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:20:30,078 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:20:30,080 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:20:30,080 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:20:30,080 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:20:30,081 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:20:30,081 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:20:30,082 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:20:30,083 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:20:30,083 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:20:30,103 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:20:30,104 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:20:30,104 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:20:30,104 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:20:30,105 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:20:30,106 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:20:30,106 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:20:30,106 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:20:30,106 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:20:30,107 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:20:30,107 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:20:30,107 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:20:30,107 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:20:30,107 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:20:30,108 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:20:30,108 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:20:30,108 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:20:30,108 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:20:30,108 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:20:30,109 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:20:30,109 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:20:30,110 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:20:30,110 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:20:30,167 INFO ]: Repository-Root is: /tmp [2018-06-25 08:20:30,186 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:20:30,191 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:20:30,193 INFO ]: Initializing SmtParser... [2018-06-25 08:20:30,193 INFO ]: SmtParser initialized [2018-06-25 08:20:30,194 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/delauny-edge-flipping.8.smt2 [2018-06-25 08:20:30,195 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 [2018-06-25 08:20:30,285 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/delauny-edge-flipping.8.smt2 unknown [2018-06-25 08:20:30,532 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/delauny-edge-flipping.8.smt2 [2018-06-25 08:20:30,537 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:20:30,544 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:20:30,545 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:20:30,545 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:20:30,545 INFO ]: ChcToBoogie initialized [2018-06-25 08:20:30,548 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:20:30" (1/1) ... [2018-06-25 08:20:30,618 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30 Unit [2018-06-25 08:20:30,618 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:20:30,619 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:20:30,619 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:20:30,619 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:20:30,639 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30" (1/1) ... [2018-06-25 08:20:30,639 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30" (1/1) ... [2018-06-25 08:20:30,646 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30" (1/1) ... [2018-06-25 08:20:30,646 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30" (1/1) ... [2018-06-25 08:20:30,652 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30" (1/1) ... [2018-06-25 08:20:30,654 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30" (1/1) ... [2018-06-25 08:20:30,656 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30" (1/1) ... [2018-06-25 08:20:30,657 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:20:30,658 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:20:30,658 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:20:30,658 INFO ]: RCFGBuilder initialized [2018-06-25 08:20:30,670 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30" (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) [2018-06-25 08:20:30,684 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:20:30,684 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:20:30,684 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:20:30,684 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:20:30,684 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:20:30,685 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 [2018-06-25 08:20:31,017 INFO ]: Using library mode [2018-06-25 08:20:31,018 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:20:31 BoogieIcfgContainer [2018-06-25 08:20:31,018 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:20:31,019 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:20:31,019 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:20:31,022 INFO ]: TraceAbstraction initialized [2018-06-25 08:20:31,022 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:20:30" (1/3) ... [2018-06-25 08:20:31,023 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8ddc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:20:31, skipping insertion in model container [2018-06-25 08:20:31,023 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:20:30" (2/3) ... [2018-06-25 08:20:31,024 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8ddc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:20:31, skipping insertion in model container [2018-06-25 08:20:31,024 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:20:31" (3/3) ... [2018-06-25 08:20:31,026 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:20:31,035 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:20:31,044 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:20:31,080 INFO ]: Using default assertion order modulation [2018-06-25 08:20:31,080 INFO ]: Interprodecural is true [2018-06-25 08:20:31,080 INFO ]: Hoare is false [2018-06-25 08:20:31,080 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:20:31,080 INFO ]: Backedges is TWOTRACK [2018-06-25 08:20:31,080 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:20:31,080 INFO ]: Difference is false [2018-06-25 08:20:31,080 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:20:31,080 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:20:31,093 INFO ]: Start isEmpty. Operand 18 states. [2018-06-25 08:20:31,103 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 08:20:31,104 INFO ]: Found error trace [2018-06-25 08:20:31,104 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:20:31,105 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:20:31,110 INFO ]: Analyzing trace with hash 1999380130, now seen corresponding path program 1 times [2018-06-25 08:20:31,112 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:20:31,112 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:20:31,157 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:20:31,157 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:20:31,157 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:20:31,189 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:20:31,223 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:20:31,225 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:20:31,225 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 08:20:31,227 INFO ]: Interpolant automaton has 2 states [2018-06-25 08:20:31,244 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 08:20:31,244 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 08:20:31,246 INFO ]: Start difference. First operand 18 states. Second operand 2 states. [2018-06-25 08:20:31,263 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:20:31,264 INFO ]: Finished difference Result 16 states and 20 transitions. [2018-06-25 08:20:31,264 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 08:20:31,265 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-25 08:20:31,265 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:20:31,275 INFO ]: With dead ends: 16 [2018-06-25 08:20:31,275 INFO ]: Without dead ends: 13 [2018-06-25 08:20:31,280 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 08:20:31,294 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 08:20:31,312 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 08:20:31,313 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 08:20:31,314 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-25 08:20:31,315 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2018-06-25 08:20:31,316 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:20:31,316 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-25 08:20:31,316 INFO ]: Interpolant automaton has 2 states. [2018-06-25 08:20:31,316 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-25 08:20:31,317 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 08:20:31,317 INFO ]: Found error trace [2018-06-25 08:20:31,317 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:20:31,317 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:20:31,318 INFO ]: Analyzing trace with hash -1571300713, now seen corresponding path program 1 times [2018-06-25 08:20:31,318 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:20:31,318 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:20:31,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:20:31,319 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:20:31,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:20:31,338 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:20:31,458 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:20:31,459 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:20:31,459 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:20:31,460 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:20:31,460 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:20:31,460 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:20:31,460 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2018-06-25 08:20:31,647 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:20:31,647 INFO ]: Finished difference Result 23 states and 25 transitions. [2018-06-25 08:20:31,648 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:20:31,649 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-25 08:20:31,649 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:20:31,649 INFO ]: With dead ends: 23 [2018-06-25 08:20:31,649 INFO ]: Without dead ends: 23 [2018-06-25 08:20:31,650 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:20:31,650 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-25 08:20:31,655 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-25 08:20:31,655 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-25 08:20:31,656 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-06-25 08:20:31,656 INFO ]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2018-06-25 08:20:31,659 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:20:31,659 INFO ]: Abstraction has 23 states and 25 transitions. [2018-06-25 08:20:31,659 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:20:31,659 INFO ]: Start isEmpty. Operand 23 states and 25 transitions. [2018-06-25 08:20:31,660 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-25 08:20:31,660 INFO ]: Found error trace [2018-06-25 08:20:31,660 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:20:31,660 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:20:31,660 INFO ]: Analyzing trace with hash -1798154373, now seen corresponding path program 1 times [2018-06-25 08:20:31,660 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:20:31,660 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:20:31,661 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:20:31,661 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:20:31,661 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:20:31,693 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:20:31,777 INFO ]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 08:20:31,777 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:20:31,777 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:20:31,777 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:20:31,777 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:20:31,778 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:20:31,778 INFO ]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2018-06-25 08:20:31,906 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:20:31,906 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-25 08:20:31,907 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 08:20:31,907 INFO ]: Start accepts. Automaton has 4 states. Word has length 19 [2018-06-25 08:20:31,908 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:20:31,908 INFO ]: With dead ends: 15 [2018-06-25 08:20:31,908 INFO ]: Without dead ends: 0 [2018-06-25 08:20:31,908 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 [2018-06-25 08:20:31,908 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 08:20:31,908 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 08:20:31,908 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 08:20:31,908 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 08:20:31,908 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-06-25 08:20:31,908 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:20:31,908 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 08:20:31,908 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:20:31,909 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 08:20:31,909 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 08:20:31,915 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:20:31 BoogieIcfgContainer [2018-06-25 08:20:31,915 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:20:31,916 INFO ]: Toolchain (without parser) took 1378.54 ms. Allocated memory is still 307.8 MB. Free memory was 261.2 MB in the beginning and 217.1 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 3.6 GB. [2018-06-25 08:20:31,922 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:20:31,922 INFO ]: ChcToBoogie took 73.84 ms. Allocated memory is still 307.8 MB. Free memory was 261.2 MB in the beginning and 258.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:20:31,923 INFO ]: Boogie Preprocessor took 38.61 ms. Allocated memory is still 307.8 MB. Free memory was 258.2 MB in the beginning and 257.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-25 08:20:31,923 INFO ]: RCFGBuilder took 359.76 ms. Allocated memory is still 307.8 MB. Free memory was 257.2 MB in the beginning and 245.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:20:31,924 INFO ]: TraceAbstraction took 896.45 ms. Allocated memory is still 307.8 MB. Free memory was 245.2 MB in the beginning and 217.1 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 3.6 GB. [2018-06-25 08:20:31,928 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 307.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 73.84 ms. Allocated memory is still 307.8 MB. Free memory was 261.2 MB in the beginning and 258.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.61 ms. Allocated memory is still 307.8 MB. Free memory was 258.2 MB in the beginning and 257.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * RCFGBuilder took 359.76 ms. Allocated memory is still 307.8 MB. Free memory was 257.2 MB in the beginning and 245.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 896.45 ms. Allocated memory is still 307.8 MB. Free memory was 245.2 MB in the beginning and 217.1 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 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, 18 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 28 SDslu, 8 SDs, 0 SdLazy, 30 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 7/7 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/delauny-edge-flipping.8.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-20-31-945.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/delauny-edge-flipping.8.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-20-31-945.csv Received shutdown request...