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/eldarica-misc/LIA/reve/027b-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:35:38,247 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:35:38,250 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:35:38,263 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:35:38,263 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:35:38,264 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:35:38,265 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:35:38,269 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:35:38,270 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:35:38,272 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:35:38,273 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:35:38,273 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:35:38,274 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:35:38,275 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:35:38,275 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:35:38,279 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:35:38,281 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:35:38,282 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:35:38,295 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:35:38,296 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:35:38,297 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:35:38,299 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:35:38,299 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:35:38,299 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:35:38,300 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:35:38,300 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:35:38,301 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:35:38,302 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:35:38,303 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:35:38,308 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:35:38,309 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:35:38,310 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:35:38,310 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:35:38,311 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:35:38,311 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:35:38,311 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:35:38,333 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:35:38,334 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:35:38,334 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:35:38,334 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:35:38,335 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:35:38,336 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:35:38,336 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:35:38,336 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:35:38,336 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:35:38,336 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:35:38,336 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:35:38,337 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:35:38,337 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:35:38,338 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:35:38,338 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:35:38,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:35:38,338 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:35:38,339 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:35:38,339 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:35:38,383 INFO ]: Repository-Root is: /tmp [2018-06-22 01:35:38,395 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:35:38,398 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:35:38,401 INFO ]: Initializing SmtParser... [2018-06-22 01:35:38,401 INFO ]: SmtParser initialized [2018-06-22 01:35:38,402 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/027b-horn.smt2 [2018-06-22 01:35:38,403 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 01:35:38,492 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/027b-horn.smt2 unknown [2018-06-22 01:35:38,690 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/027b-horn.smt2 [2018-06-22 01:35:38,695 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:35:38,701 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:35:38,701 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:35:38,701 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:35:38,701 INFO ]: ChcToBoogie initialized [2018-06-22 01:35:38,704 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:35:38" (1/1) ... [2018-06-22 01:35:38,761 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38 Unit [2018-06-22 01:35:38,761 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:35:38,762 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:35:38,762 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:35:38,762 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:35:38,782 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38" (1/1) ... [2018-06-22 01:35:38,782 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38" (1/1) ... [2018-06-22 01:35:38,788 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38" (1/1) ... [2018-06-22 01:35:38,788 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38" (1/1) ... [2018-06-22 01:35:38,793 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38" (1/1) ... [2018-06-22 01:35:38,795 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38" (1/1) ... [2018-06-22 01:35:38,798 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38" (1/1) ... [2018-06-22 01:35:38,799 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:35:38,800 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:35:38,800 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:35:38,800 INFO ]: RCFGBuilder initialized [2018-06-22 01:35:38,801 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38" (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 01:35:38,811 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:35:38,811 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:35:38,812 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:35:38,812 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:35:38,812 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:35:38,812 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 01:35:39,110 INFO ]: Using library mode [2018-06-22 01:35:39,111 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:35:39 BoogieIcfgContainer [2018-06-22 01:35:39,111 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:35:39,114 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:35:39,114 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:35:39,117 INFO ]: TraceAbstraction initialized [2018-06-22 01:35:39,117 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:35:38" (1/3) ... [2018-06-22 01:35:39,118 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e3eeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:35:39, skipping insertion in model container [2018-06-22 01:35:39,118 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:35:38" (2/3) ... [2018-06-22 01:35:39,119 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e3eeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:35:39, skipping insertion in model container [2018-06-22 01:35:39,119 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:35:39" (3/3) ... [2018-06-22 01:35:39,121 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:35:39,127 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:35:39,133 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:35:39,168 INFO ]: Using default assertion order modulation [2018-06-22 01:35:39,168 INFO ]: Interprodecural is true [2018-06-22 01:35:39,168 INFO ]: Hoare is false [2018-06-22 01:35:39,168 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:35:39,168 INFO ]: Backedges is TWOTRACK [2018-06-22 01:35:39,169 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:35:39,169 INFO ]: Difference is false [2018-06-22 01:35:39,169 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:35:39,169 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:35:39,181 INFO ]: Start isEmpty. Operand 11 states. [2018-06-22 01:35:39,189 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:35:39,189 INFO ]: Found error trace [2018-06-22 01:35:39,190 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:39,190 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:39,194 INFO ]: Analyzing trace with hash 1254912034, now seen corresponding path program 1 times [2018-06-22 01:35:39,195 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:39,195 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:39,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:39,225 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:35:39,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:39,276 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:39,355 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:39,357 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:35:39,357 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:35:39,359 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:35:39,372 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:35:39,372 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:35:39,373 INFO ]: Start difference. First operand 11 states. Second operand 3 states. [2018-06-22 01:35:39,546 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:39,546 INFO ]: Finished difference Result 10 states and 21 transitions. [2018-06-22 01:35:39,547 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:35:39,548 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 01:35:39,548 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:39,556 INFO ]: With dead ends: 10 [2018-06-22 01:35:39,556 INFO ]: Without dead ends: 10 [2018-06-22 01:35:39,560 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 01:35:39,574 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 01:35:39,602 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 01:35:39,604 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 01:35:39,604 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 21 transitions. [2018-06-22 01:35:39,607 INFO ]: Start accepts. Automaton has 10 states and 21 transitions. Word has length 7 [2018-06-22 01:35:39,608 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:39,608 INFO ]: Abstraction has 10 states and 21 transitions. [2018-06-22 01:35:39,608 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:35:39,608 INFO ]: Start isEmpty. Operand 10 states and 21 transitions. [2018-06-22 01:35:39,608 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:35:39,608 INFO ]: Found error trace [2018-06-22 01:35:39,608 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:39,609 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:39,609 INFO ]: Analyzing trace with hash 1257384687, now seen corresponding path program 1 times [2018-06-22 01:35:39,609 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:39,609 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:39,611 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:39,611 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:35:39,611 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:39,622 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:39,690 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:39,690 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:35:39,690 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:35:39,692 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:35:39,692 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:35:39,692 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:35:39,692 INFO ]: Start difference. First operand 10 states and 21 transitions. Second operand 3 states. [2018-06-22 01:35:39,704 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:39,704 INFO ]: Finished difference Result 11 states and 23 transitions. [2018-06-22 01:35:39,705 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:35:39,705 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 01:35:39,705 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:39,705 INFO ]: With dead ends: 11 [2018-06-22 01:35:39,705 INFO ]: Without dead ends: 11 [2018-06-22 01:35:39,706 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 01:35:39,706 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 01:35:39,707 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 01:35:39,707 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 01:35:39,707 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 23 transitions. [2018-06-22 01:35:39,708 INFO ]: Start accepts. Automaton has 11 states and 23 transitions. Word has length 7 [2018-06-22 01:35:39,708 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:39,708 INFO ]: Abstraction has 11 states and 23 transitions. [2018-06-22 01:35:39,708 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:35:39,708 INFO ]: Start isEmpty. Operand 11 states and 23 transitions. [2018-06-22 01:35:39,708 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:35:39,708 INFO ]: Found error trace [2018-06-22 01:35:39,708 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:39,708 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:39,708 INFO ]: Analyzing trace with hash 253311451, now seen corresponding path program 1 times [2018-06-22 01:35:39,708 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:39,708 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:39,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:39,709 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:35:39,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:39,722 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:39,797 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:39,797 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:35:39,797 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:35:39,797 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:35:39,797 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:35:39,797 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:35:39,797 INFO ]: Start difference. First operand 11 states and 23 transitions. Second operand 4 states. [2018-06-22 01:35:40,121 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:40,121 INFO ]: Finished difference Result 15 states and 35 transitions. [2018-06-22 01:35:40,122 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:35:40,122 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:35:40,122 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:40,124 INFO ]: With dead ends: 15 [2018-06-22 01:35:40,124 INFO ]: Without dead ends: 13 [2018-06-22 01:35:40,124 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:35:40,124 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 01:35:40,127 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-06-22 01:35:40,127 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 01:35:40,127 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 17 transitions. [2018-06-22 01:35:40,127 INFO ]: Start accepts. Automaton has 11 states and 17 transitions. Word has length 8 [2018-06-22 01:35:40,127 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:40,127 INFO ]: Abstraction has 11 states and 17 transitions. [2018-06-22 01:35:40,127 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:35:40,128 INFO ]: Start isEmpty. Operand 11 states and 17 transitions. [2018-06-22 01:35:40,128 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:35:40,128 INFO ]: Found error trace [2018-06-22 01:35:40,128 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:40,128 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:40,128 INFO ]: Analyzing trace with hash 243152720, now seen corresponding path program 1 times [2018-06-22 01:35:40,128 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:40,128 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:40,130 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:40,131 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:35:40,131 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:40,158 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:40,195 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:40,196 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:35:40,196 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:35:40,196 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:35:40,196 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:35:40,196 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:35:40,196 INFO ]: Start difference. First operand 11 states and 17 transitions. Second operand 3 states. [2018-06-22 01:35:40,239 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:40,239 INFO ]: Finished difference Result 11 states and 16 transitions. [2018-06-22 01:35:40,241 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:35:40,241 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:35:40,241 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:40,242 INFO ]: With dead ends: 11 [2018-06-22 01:35:40,242 INFO ]: Without dead ends: 9 [2018-06-22 01:35:40,242 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 01:35:40,242 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 01:35:40,243 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 01:35:40,243 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 01:35:40,244 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-06-22 01:35:40,244 INFO ]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 8 [2018-06-22 01:35:40,244 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:40,244 INFO ]: Abstraction has 9 states and 11 transitions. [2018-06-22 01:35:40,244 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:35:40,244 INFO ]: Start isEmpty. Operand 9 states and 11 transitions. [2018-06-22 01:35:40,244 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:35:40,244 INFO ]: Found error trace [2018-06-22 01:35:40,244 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:35:40,244 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:35:40,244 INFO ]: Analyzing trace with hash 325048179, now seen corresponding path program 1 times [2018-06-22 01:35:40,244 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:35:40,244 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:35:40,245 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:40,245 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:35:40,245 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:35:40,261 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:35:40,324 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:35:40,325 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:35:40,325 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:35:40,325 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:35:40,325 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:35:40,325 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:35:40,325 INFO ]: Start difference. First operand 9 states and 11 transitions. Second operand 3 states. [2018-06-22 01:35:40,375 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:35:40,375 INFO ]: Finished difference Result 5 states and 6 transitions. [2018-06-22 01:35:40,375 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:35:40,375 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:35:40,375 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:35:40,375 INFO ]: With dead ends: 5 [2018-06-22 01:35:40,375 INFO ]: Without dead ends: 0 [2018-06-22 01:35:40,376 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 01:35:40,376 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:35:40,376 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:35:40,376 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:35:40,376 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:35:40,376 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-22 01:35:40,376 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:35:40,376 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:35:40,376 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:35:40,376 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:35:40,376 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:35:40,381 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:35:40 BoogieIcfgContainer [2018-06-22 01:35:40,381 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:35:40,381 INFO ]: Toolchain (without parser) took 1685.69 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 214.6 MB in the end (delta: 49.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:40,383 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:35:40,383 INFO ]: ChcToBoogie took 60.08 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:40,384 INFO ]: Boogie Preprocessor took 37.90 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 259.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:40,385 INFO ]: RCFGBuilder took 310.99 ms. Allocated memory is still 309.3 MB. Free memory was 259.8 MB in the beginning and 247.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:40,386 INFO ]: TraceAbstraction took 1267.31 ms. Allocated memory is still 309.3 MB. Free memory was 247.8 MB in the beginning and 214.6 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:35:40,389 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 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.08 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.90 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 259.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 310.99 ms. Allocated memory is still 309.3 MB. Free memory was 259.8 MB in the beginning and 247.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1267.31 ms. Allocated memory is still 309.3 MB. Free memory was 247.8 MB in the beginning and 214.6 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 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, 11 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 2 SDslu, 42 SDs, 0 SdLazy, 38 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 383 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 3/3 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/027b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-35-40-400.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/027b-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-35-40-400.csv Received shutdown request...