java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/repeat.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:35:55,215 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:35:55,219 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:35:55,233 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:35:55,234 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:35:55,235 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:35:55,237 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:35:55,240 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:35:55,242 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:35:55,244 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:35:55,245 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:35:55,245 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:35:55,246 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:35:55,250 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:35:55,251 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:35:55,252 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:35:55,261 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:35:55,262 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:35:55,264 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:35:55,267 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:35:55,269 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:35:55,272 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:35:55,273 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:35:55,273 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:35:55,274 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:35:55,275 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:35:55,275 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:35:55,279 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:35:55,280 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:35:55,280 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:35:55,281 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:35:55,281 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:35:55,285 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:35:55,286 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:35:55,286 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:35:55,287 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:35:55,307 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:35:55,307 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:35:55,308 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:35:55,308 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:35:55,312 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:35:55,312 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:35:55,312 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:35:55,313 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:35:55,313 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:35:55,313 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:35:55,313 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:35:55,313 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:35:55,313 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:35:55,314 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:35:55,314 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:35:55,314 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:35:55,314 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:35:55,314 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:35:55,314 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:35:55,317 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:35:55,317 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:35:55,369 INFO ]: Repository-Root is: /tmp [2018-06-22 11:35:55,389 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:35:55,394 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:35:55,395 INFO ]: Initializing SmtParser... [2018-06-22 11:35:55,396 INFO ]: SmtParser initialized [2018-06-22 11:35:55,396 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/repeat.smt2 [2018-06-22 11:35:55,398 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 11:35:55,488 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/repeat.smt2 unknown [2018-06-22 11:35:55,802 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/repeat.smt2 [2018-06-22 11:35:55,807 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:35:55,814 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:35:55,814 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:35:55,815 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:35:55,815 INFO ]: ChcToBoogie initialized [2018-06-22 11:35:55,819 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:55" (1/1) ... [2018-06-22 11:35:55,865 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55 Unit [2018-06-22 11:35:55,865 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:35:55,866 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:35:55,866 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:35:55,866 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:35:55,892 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55" (1/1) ... [2018-06-22 11:35:55,892 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55" (1/1) ... [2018-06-22 11:35:55,903 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55" (1/1) ... [2018-06-22 11:35:55,903 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55" (1/1) ... [2018-06-22 11:35:55,906 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55" (1/1) ... [2018-06-22 11:35:55,909 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55" (1/1) ... [2018-06-22 11:35:55,910 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55" (1/1) ... [2018-06-22 11:35:55,911 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:35:55,912 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:35:55,914 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:35:55,915 INFO ]: RCFGBuilder initialized [2018-06-22 11:35:55,916 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 11:35:55,931 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:35:55,931 INFO ]: Found specification of procedure False [2018-06-22 11:35:55,931 INFO ]: Found implementation of procedure False [2018-06-22 11:35:55,931 INFO ]: Specification and implementation of procedure repeatDLRunknownCLN5 given in one single declaration [2018-06-22 11:35:55,931 INFO ]: Found specification of procedure repeatDLRunknownCLN5 [2018-06-22 11:35:55,931 INFO ]: Found implementation of procedure repeatDLRunknownCLN5 [2018-06-22 11:35:55,931 INFO ]: Specification and implementation of procedure repeatDLRunknownCLN2 given in one single declaration [2018-06-22 11:35:55,931 INFO ]: Found specification of procedure repeatDLRunknownCLN2 [2018-06-22 11:35:55,931 INFO ]: Found implementation of procedure repeatDLRunknownCLN2 [2018-06-22 11:35:55,932 INFO ]: Specification and implementation of procedure succDLRunknownCLN7 given in one single declaration [2018-06-22 11:35:55,932 INFO ]: Found specification of procedure succDLRunknownCLN7 [2018-06-22 11:35:55,932 INFO ]: Found implementation of procedure succDLRunknownCLN7 [2018-06-22 11:35:55,932 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:35:55,932 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:35:55,932 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:35:56,319 INFO ]: Using library mode [2018-06-22 11:35:56,319 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:56 BoogieIcfgContainer [2018-06-22 11:35:56,319 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:35:56,320 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:35:56,320 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:35:56,322 INFO ]: TraceAbstraction initialized [2018-06-22 11:35:56,328 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:55" (1/3) ... [2018-06-22 11:35:56,329 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3245b58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:35:56, skipping insertion in model container [2018-06-22 11:35:56,329 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:55" (2/3) ... [2018-06-22 11:35:56,329 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3245b58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:35:56, skipping insertion in model container [2018-06-22 11:35:56,329 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:56" (3/3) ... [2018-06-22 11:35:56,331 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:35:56,343 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:35:56,353 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:35:56,405 INFO ]: Using default assertion order modulation [2018-06-22 11:35:56,405 INFO ]: Interprodecural is true [2018-06-22 11:35:56,405 INFO ]: Hoare is false [2018-06-22 11:35:56,405 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:35:56,405 INFO ]: Backedges is TWOTRACK [2018-06-22 11:35:56,405 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:35:56,406 INFO ]: Difference is false [2018-06-22 11:35:56,406 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:35:56,406 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:35:56,422 INFO ]: Start isEmpty. Operand 21 states. [2018-06-22 11:35:56,436 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:35:56,436 INFO ]: Found error trace [2018-06-22 11:35:56,437 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:35:56,437 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:56,441 INFO ]: Analyzing trace with hash 85046562, now seen corresponding path program 1 times [2018-06-22 11:35:56,442 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:56,443 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:56,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:56,480 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:56,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:56,494 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:56,517 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:56,519 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:56,519 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:35:56,520 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:35:56,531 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:35:56,532 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:35:56,533 INFO ]: Start difference. First operand 21 states. Second operand 2 states. [2018-06-22 11:35:56,553 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:56,553 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 11:35:56,553 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:35:56,554 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:35:56,554 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:56,569 INFO ]: With dead ends: 19 [2018-06-22 11:35:56,569 INFO ]: Without dead ends: 19 [2018-06-22 11:35:56,571 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 [2018-06-22 11:35:56,589 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:35:56,607 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:35:56,608 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:35:56,609 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 11:35:56,610 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2018-06-22 11:35:56,610 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:56,610 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 11:35:56,610 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:35:56,610 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 11:35:56,611 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:35:56,611 INFO ]: Found error trace [2018-06-22 11:35:56,611 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:56,611 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:56,612 INFO ]: Analyzing trace with hash 599260547, now seen corresponding path program 1 times [2018-06-22 11:35:56,612 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:56,612 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:56,612 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:56,612 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:56,612 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:56,636 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:56,802 WARN ]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 11:35:57,075 WARN ]: Spent 218.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 8 [2018-06-22 11:35:57,077 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:57,077 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:57,077 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:35:57,079 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:35:57,079 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:35:57,079 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:35:57,079 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2018-06-22 11:35:57,144 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:57,144 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 11:35:57,145 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:35:57,145 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:35:57,145 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:57,147 INFO ]: With dead ends: 21 [2018-06-22 11:35:57,147 INFO ]: Without dead ends: 21 [2018-06-22 11:35:57,148 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:35:57,148 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 11:35:57,154 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 11:35:57,154 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 11:35:57,155 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 11:35:57,155 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2018-06-22 11:35:57,155 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:57,156 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 11:35:57,156 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:35:57,156 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 11:35:57,156 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:35:57,156 INFO ]: Found error trace [2018-06-22 11:35:57,157 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:35:57,157 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:57,157 INFO ]: Analyzing trace with hash 1517996583, now seen corresponding path program 1 times [2018-06-22 11:35:57,157 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:57,157 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:57,158 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:57,158 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:57,158 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:57,183 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:57,791 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:35:57,792 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:57,792 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:35:57,801 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:57,839 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:57,850 INFO ]: Computing forward predicates... [2018-06-22 11:35:58,198 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:35:58,221 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:58,222 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-06-22 11:35:58,222 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:35:58,222 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:35:58,222 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:35:58,223 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2018-06-22 11:35:58,430 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:58,430 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 11:35:58,431 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:35:58,431 INFO ]: Start accepts. Automaton has 11 states. Word has length 21 [2018-06-22 11:35:58,432 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:58,432 INFO ]: With dead ends: 19 [2018-06-22 11:35:58,432 INFO ]: Without dead ends: 0 [2018-06-22 11:35:58,432 INFO ]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:35:58,432 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:35:58,432 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:35:58,432 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:35:58,432 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:35:58,433 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:35:58,433 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:58,433 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:35:58,433 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:35:58,433 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:35:58,433 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:35:58,439 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:35:58 BoogieIcfgContainer [2018-06-22 11:35:58,439 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:35:58,439 INFO ]: Toolchain (without parser) took 2631.76 ms. Allocated memory was 308.8 MB in the beginning and 325.6 MB in the end (delta: 16.8 MB). Free memory was 265.2 MB in the beginning and 286.9 MB in the end (delta: -21.7 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:58,440 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:58,441 INFO ]: ChcToBoogie took 51.19 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:58,441 INFO ]: Boogie Preprocessor took 45.08 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:35:58,441 INFO ]: RCFGBuilder took 407.87 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 254.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:58,442 INFO ]: TraceAbstraction took 2118.59 ms. Allocated memory was 308.8 MB in the beginning and 325.6 MB in the end (delta: 16.8 MB). Free memory was 254.2 MB in the beginning and 286.9 MB in the end (delta: -32.7 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:58,445 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 51.19 ms. Allocated memory is still 308.8 MB. Free memory was 265.2 MB in the beginning and 263.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.08 ms. Allocated memory is still 308.8 MB. Free memory was 263.2 MB in the beginning and 262.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 407.87 ms. Allocated memory is still 308.8 MB. Free memory was 262.2 MB in the beginning and 254.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2118.59 ms. Allocated memory was 308.8 MB in the beginning and 325.6 MB in the end (delta: 16.8 MB). Free memory was 254.2 MB in the beginning and 286.9 MB in the end (delta: -32.7 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 7 SDslu, 101 SDs, 0 SdLazy, 49 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 4792 SizeOfPredicates, 8 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/6 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/repeat.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-35-58-458.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/repeat.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-35-58-458.csv Received shutdown request...