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/enc-rev_accum.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:29:39,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:29:39,387 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:29:39,404 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:29:39,404 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:29:39,405 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:29:39,406 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:29:39,409 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:29:39,410 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:29:39,413 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:29:39,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:29:39,414 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:29:39,414 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:29:39,416 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:29:39,420 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:29:39,421 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:29:39,434 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:29:39,436 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:29:39,438 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:29:39,439 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:29:39,440 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:29:39,447 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:29:39,447 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:29:39,447 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:29:39,448 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:29:39,449 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:29:39,450 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:29:39,453 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:29:39,455 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:29:39,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:29:39,455 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:29:39,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:29:39,461 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:29:39,462 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:29:39,462 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:29:39,463 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 11:29:39,484 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:29:39,485 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:29:39,485 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:29:39,485 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:29:39,486 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:29:39,486 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:29:39,489 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:29:39,489 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:29:39,489 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:29:39,489 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:29:39,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:29:39,490 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:29:39,490 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:29:39,490 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:29:39,490 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:29:39,490 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:29:39,491 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:29:39,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:29:39,491 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:29:39,493 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:29:39,493 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:29:39,545 INFO ]: Repository-Root is: /tmp [2018-06-22 11:29:39,564 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:29:39,569 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:29:39,570 INFO ]: Initializing SmtParser... [2018-06-22 11:29:39,570 INFO ]: SmtParser initialized [2018-06-22 11:29:39,571 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/enc-rev_accum.smt2 [2018-06-22 11:29:39,573 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 11:29:39,671 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/enc-rev_accum.smt2 unknown [2018-06-22 11:29:39,805 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/enc-rev_accum.smt2 [2018-06-22 11:29:39,810 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:29:39,820 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:29:39,820 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:29:39,820 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:29:39,821 INFO ]: ChcToBoogie initialized [2018-06-22 11:29:39,824 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:29:39" (1/1) ... [2018-06-22 11:29:39,872 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39 Unit [2018-06-22 11:29:39,872 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:29:39,873 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:29:39,873 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:29:39,873 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:29:39,897 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39" (1/1) ... [2018-06-22 11:29:39,898 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39" (1/1) ... [2018-06-22 11:29:39,904 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39" (1/1) ... [2018-06-22 11:29:39,905 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39" (1/1) ... [2018-06-22 11:29:39,907 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39" (1/1) ... [2018-06-22 11:29:39,909 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39" (1/1) ... [2018-06-22 11:29:39,910 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39" (1/1) ... [2018-06-22 11:29:39,912 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:29:39,912 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:29:39,912 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:29:39,912 INFO ]: RCFGBuilder initialized [2018-06-22 11:29:39,916 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39" (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 11:29:39,933 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:29:39,934 INFO ]: Found specification of procedure False [2018-06-22 11:29:39,934 INFO ]: Found implementation of procedure False [2018-06-22 11:29:39,934 INFO ]: Specification and implementation of procedure revDLRunknownCLN3 given in one single declaration [2018-06-22 11:29:39,934 INFO ]: Found specification of procedure revDLRunknownCLN3 [2018-06-22 11:29:39,934 INFO ]: Found implementation of procedure revDLRunknownCLN3 [2018-06-22 11:29:39,934 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:29:39,934 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:29:39,934 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 11:29:40,250 INFO ]: Using library mode [2018-06-22 11:29:40,250 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:29:40 BoogieIcfgContainer [2018-06-22 11:29:40,250 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:29:40,251 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:29:40,251 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:29:40,259 INFO ]: TraceAbstraction initialized [2018-06-22 11:29:40,260 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:29:39" (1/3) ... [2018-06-22 11:29:40,261 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0cf5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:29:40, skipping insertion in model container [2018-06-22 11:29:40,261 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:39" (2/3) ... [2018-06-22 11:29:40,261 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0cf5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:29:40, skipping insertion in model container [2018-06-22 11:29:40,261 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:29:40" (3/3) ... [2018-06-22 11:29:40,263 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:29:40,282 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:29:40,299 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:29:40,361 INFO ]: Using default assertion order modulation [2018-06-22 11:29:40,361 INFO ]: Interprodecural is true [2018-06-22 11:29:40,361 INFO ]: Hoare is false [2018-06-22 11:29:40,361 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:29:40,361 INFO ]: Backedges is TWOTRACK [2018-06-22 11:29:40,361 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:29:40,361 INFO ]: Difference is false [2018-06-22 11:29:40,361 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:29:40,362 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:29:40,389 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 11:29:40,403 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:29:40,404 INFO ]: Found error trace [2018-06-22 11:29:40,404 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:29:40,405 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:40,411 INFO ]: Analyzing trace with hash 58770979, now seen corresponding path program 1 times [2018-06-22 11:29:40,413 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:40,413 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:40,463 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:40,463 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:40,463 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:40,482 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:40,511 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:29:40,513 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:29:40,513 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:29:40,514 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:29:40,526 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:29:40,526 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:29:40,529 INFO ]: Start difference. First operand 13 states. Second operand 2 states. [2018-06-22 11:29:40,548 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:40,548 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 11:29:40,548 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:29:40,550 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:29:40,550 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:40,563 INFO ]: With dead ends: 11 [2018-06-22 11:29:40,563 INFO ]: Without dead ends: 11 [2018-06-22 11:29:40,565 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 11:29:40,587 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 11:29:40,618 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 11:29:40,619 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 11:29:40,620 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-06-22 11:29:40,621 INFO ]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2018-06-22 11:29:40,622 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:40,622 INFO ]: Abstraction has 11 states and 12 transitions. [2018-06-22 11:29:40,622 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:29:40,622 INFO ]: Start isEmpty. Operand 11 states and 12 transitions. [2018-06-22 11:29:40,623 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:29:40,623 INFO ]: Found error trace [2018-06-22 11:29:40,623 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:40,623 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:40,623 INFO ]: Analyzing trace with hash -981952883, now seen corresponding path program 1 times [2018-06-22 11:29:40,623 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:40,623 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:40,624 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:40,624 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:40,624 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:40,647 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:40,712 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:29:40,712 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:29:40,712 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:29:40,714 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:29:40,714 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:29:40,714 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:29:40,714 INFO ]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-06-22 11:29:40,786 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:40,786 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 11:29:40,787 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:29:40,787 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:29:40,787 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:40,789 INFO ]: With dead ends: 13 [2018-06-22 11:29:40,789 INFO ]: Without dead ends: 13 [2018-06-22 11:29:40,790 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:29:40,790 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 11:29:40,794 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 11:29:40,794 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 11:29:40,795 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 11:29:40,795 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 11:29:40,795 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:40,795 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 11:29:40,795 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:29:40,795 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 11:29:40,795 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:29:40,795 INFO ]: Found error trace [2018-06-22 11:29:40,796 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:40,796 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:40,796 INFO ]: Analyzing trace with hash -605056143, now seen corresponding path program 1 times [2018-06-22 11:29:40,796 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:40,796 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:40,797 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:40,797 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:40,797 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:40,808 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:40,903 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:29:40,903 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:29:40,903 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:29:40,903 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:29:40,903 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:29:40,903 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:29:40,904 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2018-06-22 11:29:41,117 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:41,117 INFO ]: Finished difference Result 9 states and 10 transitions. [2018-06-22 11:29:41,118 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:29:41,119 INFO ]: Start accepts. Automaton has 5 states. Word has length 13 [2018-06-22 11:29:41,119 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:41,119 INFO ]: With dead ends: 9 [2018-06-22 11:29:41,119 INFO ]: Without dead ends: 0 [2018-06-22 11:29:41,119 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:29:41,119 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:29:41,119 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:29:41,119 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:29:41,119 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:29:41,120 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-06-22 11:29:41,120 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:41,120 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:29:41,120 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:29:41,120 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:29:41,120 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:29:41,127 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:29:41 BoogieIcfgContainer [2018-06-22 11:29:41,127 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:29:41,131 INFO ]: Toolchain (without parser) took 1320.06 ms. Allocated memory is still 307.8 MB. Free memory was 265.1 MB in the beginning and 230.1 MB in the end (delta: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:41,132 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:29:41,133 INFO ]: ChcToBoogie took 52.43 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 263.1 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. [2018-06-22 11:29:41,133 INFO ]: Boogie Preprocessor took 38.53 ms. Allocated memory is still 307.8 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:41,135 INFO ]: RCFGBuilder took 338.25 ms. Allocated memory is still 307.8 MB. Free memory was 261.1 MB in the beginning and 255.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:41,136 INFO ]: TraceAbstraction took 875.88 ms. Allocated memory is still 307.8 MB. Free memory was 254.1 MB in the beginning and 230.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:41,142 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 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 52.43 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 263.1 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.53 ms. Allocated memory is still 307.8 MB. Free memory was 263.1 MB in the beginning and 261.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 338.25 ms. Allocated memory is still 307.8 MB. Free memory was 261.1 MB in the beginning and 255.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 875.88 ms. Allocated memory is still 307.8 MB. Free memory was 254.1 MB in the beginning and 230.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 2 SDslu, 26 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 696 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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/enc-rev_accum.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-29-41-164.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-rev_accum.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-29-41-164.csv Received shutdown request...