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/sum3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:36:08,366 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:36:08,368 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:36:08,382 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:36:08,383 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:36:08,384 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:36:08,385 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:36:08,390 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:36:08,391 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:36:08,392 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:36:08,394 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:36:08,394 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:36:08,395 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:36:08,395 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:36:08,396 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:36:08,397 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:36:08,399 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:36:08,401 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:36:08,402 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:36:08,403 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:36:08,404 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:36:08,407 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:36:08,407 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:36:08,407 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:36:08,408 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:36:08,409 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:36:08,410 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:36:08,411 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:36:08,412 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:36:08,412 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:36:08,413 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:36:08,413 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:36:08,414 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:36:08,414 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:36:08,415 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:36:08,415 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 11:36:08,436 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:36:08,436 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:36:08,436 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:36:08,437 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:36:08,438 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:36:08,438 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:36:08,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:36:08,438 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:36:08,438 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:36:08,439 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:36:08,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:36:08,439 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:36:08,439 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:36:08,439 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:36:08,440 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:36:08,440 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:36:08,440 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:36:08,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:36:08,440 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:36:08,442 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:36:08,443 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:36:08,494 INFO ]: Repository-Root is: /tmp [2018-06-22 11:36:08,516 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:36:08,521 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:36:08,523 INFO ]: Initializing SmtParser... [2018-06-22 11:36:08,523 INFO ]: SmtParser initialized [2018-06-22 11:36:08,524 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum3.smt2 [2018-06-22 11:36:08,525 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 11:36:08,618 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum3.smt2 unknown [2018-06-22 11:36:08,757 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum3.smt2 [2018-06-22 11:36:08,764 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:36:08,770 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:36:08,771 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:36:08,771 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:36:08,771 INFO ]: ChcToBoogie initialized [2018-06-22 11:36:08,775 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:08" (1/1) ... [2018-06-22 11:36:08,820 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08 Unit [2018-06-22 11:36:08,821 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:36:08,822 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:36:08,822 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:36:08,822 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:36:08,844 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08" (1/1) ... [2018-06-22 11:36:08,845 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08" (1/1) ... [2018-06-22 11:36:08,852 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08" (1/1) ... [2018-06-22 11:36:08,853 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08" (1/1) ... [2018-06-22 11:36:08,855 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08" (1/1) ... [2018-06-22 11:36:08,856 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08" (1/1) ... [2018-06-22 11:36:08,858 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08" (1/1) ... [2018-06-22 11:36:08,859 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:36:08,860 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:36:08,860 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:36:08,860 INFO ]: RCFGBuilder initialized [2018-06-22 11:36:08,864 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08" (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 11:36:08,879 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:36:08,879 INFO ]: Found specification of procedure False [2018-06-22 11:36:08,879 INFO ]: Found implementation of procedure False [2018-06-22 11:36:08,879 INFO ]: Specification and implementation of procedure sumDLRunknownCLN2 given in one single declaration [2018-06-22 11:36:08,879 INFO ]: Found specification of procedure sumDLRunknownCLN2 [2018-06-22 11:36:08,879 INFO ]: Found implementation of procedure sumDLRunknownCLN2 [2018-06-22 11:36:08,880 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:36:08,880 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:36:08,880 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 11:36:09,051 INFO ]: Using library mode [2018-06-22 11:36:09,052 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:09 BoogieIcfgContainer [2018-06-22 11:36:09,052 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:36:09,056 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:36:09,056 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:36:09,060 INFO ]: TraceAbstraction initialized [2018-06-22 11:36:09,060 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:08" (1/3) ... [2018-06-22 11:36:09,061 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc3ee14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:36:09, skipping insertion in model container [2018-06-22 11:36:09,061 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:08" (2/3) ... [2018-06-22 11:36:09,061 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc3ee14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:36:09, skipping insertion in model container [2018-06-22 11:36:09,061 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:09" (3/3) ... [2018-06-22 11:36:09,063 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:36:09,073 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:36:09,079 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:36:09,127 INFO ]: Using default assertion order modulation [2018-06-22 11:36:09,128 INFO ]: Interprodecural is true [2018-06-22 11:36:09,128 INFO ]: Hoare is false [2018-06-22 11:36:09,128 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:36:09,128 INFO ]: Backedges is TWOTRACK [2018-06-22 11:36:09,128 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:36:09,128 INFO ]: Difference is false [2018-06-22 11:36:09,128 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:36:09,128 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:36:09,158 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 11:36:09,172 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:36:09,172 INFO ]: Found error trace [2018-06-22 11:36:09,173 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:36:09,173 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:09,179 INFO ]: Analyzing trace with hash 53229675, now seen corresponding path program 1 times [2018-06-22 11:36:09,182 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:09,183 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:09,222 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:09,222 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:09,222 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:09,236 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:09,258 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:09,259 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:09,259 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:36:09,261 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:36:09,272 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:36:09,272 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:36:09,274 INFO ]: Start difference. First operand 13 states. Second operand 2 states. [2018-06-22 11:36:09,297 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:09,297 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 11:36:09,297 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:36:09,299 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:36:09,299 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:09,319 INFO ]: With dead ends: 11 [2018-06-22 11:36:09,319 INFO ]: Without dead ends: 11 [2018-06-22 11:36:09,321 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 11:36:09,335 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 11:36:09,354 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 11:36:09,356 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 11:36:09,357 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-06-22 11:36:09,358 INFO ]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2018-06-22 11:36:09,358 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:09,358 INFO ]: Abstraction has 11 states and 12 transitions. [2018-06-22 11:36:09,358 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:36:09,358 INFO ]: Start isEmpty. Operand 11 states and 12 transitions. [2018-06-22 11:36:09,359 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:36:09,359 INFO ]: Found error trace [2018-06-22 11:36:09,359 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:09,360 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:09,360 INFO ]: Analyzing trace with hash 2123728052, now seen corresponding path program 1 times [2018-06-22 11:36:09,360 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:09,360 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:09,361 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:09,361 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:09,361 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:09,382 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:09,555 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:09,555 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:09,555 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:36:09,557 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:36:09,557 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:36:09,557 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:09,557 INFO ]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-06-22 11:36:09,625 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:09,625 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 11:36:09,626 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:36:09,626 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:36:09,626 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:09,628 INFO ]: With dead ends: 13 [2018-06-22 11:36:09,628 INFO ]: Without dead ends: 13 [2018-06-22 11:36:09,629 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:09,629 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 11:36:09,634 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 11:36:09,634 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 11:36:09,635 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 11:36:09,635 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 11:36:09,635 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:09,635 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 11:36:09,635 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:36:09,635 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 11:36:09,635 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:36:09,636 INFO ]: Found error trace [2018-06-22 11:36:09,636 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:09,636 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:09,636 INFO ]: Analyzing trace with hash -190937962, now seen corresponding path program 1 times [2018-06-22 11:36:09,636 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:09,636 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:09,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:09,637 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:09,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:09,650 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:09,803 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:36:09,803 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:09,803 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 11:36:09,810 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:09,843 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:09,851 INFO ]: Computing forward predicates... [2018-06-22 11:36:10,377 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:36:10,399 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:10,399 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 11:36:10,399 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:36:10,399 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:36:10,399 INFO ]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:36:10,399 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 11:36:10,693 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 11:36:10,765 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:10,765 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 11:36:10,765 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:36:10,765 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 11:36:10,766 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:10,766 INFO ]: With dead ends: 15 [2018-06-22 11:36:10,766 INFO ]: Without dead ends: 15 [2018-06-22 11:36:10,767 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:36:10,767 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:36:10,770 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:36:10,770 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:36:10,770 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 11:36:10,770 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 11:36:10,773 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:10,773 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 11:36:10,773 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:36:10,773 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 11:36:10,774 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:36:10,774 INFO ]: Found error trace [2018-06-22 11:36:10,774 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:10,774 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:10,774 INFO ]: Analyzing trace with hash -795375112, now seen corresponding path program 2 times [2018-06-22 11:36:10,774 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:10,774 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:10,775 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:10,775 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:10,775 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:10,791 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:11,013 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:36:11,013 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:11,013 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:36:11,036 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:36:11,053 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:36:11,053 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:11,055 INFO ]: Computing forward predicates... [2018-06-22 11:36:11,365 INFO ]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:36:11,386 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:11,386 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2018-06-22 11:36:11,386 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:36:11,386 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:36:11,387 INFO ]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:36:11,387 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 11:36:11,558 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:11,558 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 11:36:11,559 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:36:11,559 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 11:36:11,559 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:11,560 INFO ]: With dead ends: 19 [2018-06-22 11:36:11,560 INFO ]: Without dead ends: 19 [2018-06-22 11:36:11,561 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:36:11,561 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:36:11,564 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:36:11,564 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:36:11,564 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 11:36:11,564 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-06-22 11:36:11,565 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:11,565 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 11:36:11,565 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:36:11,565 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 11:36:11,565 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:36:11,565 INFO ]: Found error trace [2018-06-22 11:36:11,565 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:11,566 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:11,568 INFO ]: Analyzing trace with hash -543677124, now seen corresponding path program 3 times [2018-06-22 11:36:11,568 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:11,568 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:11,569 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:11,569 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:36:11,569 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:11,592 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:12,145 INFO ]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:36:12,145 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:12,145 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:36:12,162 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:36:12,224 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:36:12,224 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:12,227 INFO ]: Computing forward predicates... [2018-06-22 11:36:12,328 INFO ]: Checked inductivity of 36 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:36:12,352 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:12,352 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2018-06-22 11:36:12,352 INFO ]: Interpolant automaton has 13 states [2018-06-22 11:36:12,352 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 11:36:12,352 INFO ]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:36:12,353 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 13 states. [2018-06-22 11:36:12,572 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:12,572 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 11:36:12,572 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:36:12,572 INFO ]: Start accepts. Automaton has 13 states. Word has length 25 [2018-06-22 11:36:12,573 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:12,573 INFO ]: With dead ends: 15 [2018-06-22 11:36:12,573 INFO ]: Without dead ends: 0 [2018-06-22 11:36:12,573 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:36:12,573 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:36:12,573 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:36:12,573 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:36:12,573 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:36:12,573 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 11:36:12,573 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:12,573 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:36:12,573 INFO ]: Interpolant automaton has 13 states. [2018-06-22 11:36:12,573 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:36:12,573 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:36:12,577 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:36:12 BoogieIcfgContainer [2018-06-22 11:36:12,578 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:36:12,578 INFO ]: Toolchain (without parser) took 3813.49 ms. Allocated memory was 303.6 MB in the beginning and 322.4 MB in the end (delta: 18.9 MB). Free memory was 261.1 MB in the beginning and 226.7 MB in the end (delta: 34.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:12,579 INFO ]: SmtParser took 0.43 ms. Allocated memory is still 303.6 MB. Free memory is still 269.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:36:12,580 INFO ]: ChcToBoogie took 50.26 ms. Allocated memory is still 303.6 MB. Free memory was 260.1 MB in the beginning and 259.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:36:12,580 INFO ]: Boogie Preprocessor took 37.59 ms. Allocated memory is still 303.6 MB. Free memory was 259.1 MB in the beginning and 257.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:12,581 INFO ]: RCFGBuilder took 192.31 ms. Allocated memory is still 303.6 MB. Free memory was 257.1 MB in the beginning and 251.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:12,581 INFO ]: TraceAbstraction took 3521.14 ms. Allocated memory was 303.6 MB in the beginning and 322.4 MB in the end (delta: 18.9 MB). Free memory was 251.0 MB in the beginning and 226.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 43.2 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:12,585 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.43 ms. Allocated memory is still 303.6 MB. Free memory is still 269.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.26 ms. Allocated memory is still 303.6 MB. Free memory was 260.1 MB in the beginning and 259.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.59 ms. Allocated memory is still 303.6 MB. Free memory was 259.1 MB in the beginning and 257.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 192.31 ms. Allocated memory is still 303.6 MB. Free memory was 257.1 MB in the beginning and 251.0 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3521.14 ms. Allocated memory was 303.6 MB in the beginning and 322.4 MB in the end (delta: 18.9 MB). Free memory was 251.0 MB in the beginning and 226.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 43.2 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 3.4s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 23 SDslu, 134 SDs, 0 SdLazy, 114 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=4, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 8412 SizeOfPredicates, 31 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 34/98 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/sum3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-36-12-597.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-36-12-597.csv Received shutdown request...